General Information of Drug Transporter (DT)
DT ID DTD0010 Transporter Info
Gene Name SLC22A1
Protein Name Organic cation transporter 1
Gene ID
6580
UniProt ID
O15245
Genetic Polymorphisms of DT (GPD)
Genetic Polymorphism rs12208357
Site of GPD chr6:160122116 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP C>T
Minor Allele Frequency T=0.0204/102 (Global)
 Allele C Click to Show/Hide the Full List of Affected Drugs:           3 Drugs in Total
Metformin Drug Info Diabetes Mellitus Correlated with the increased drug bioavailability (AUC, CL & AUC/CL ratio) [ 1]
Methadone N.A. Discontinuation Allele C is not associated with increased likelihood of Discontinuation when treated with methadone in people with Opioid-Related Disorders as compared to allele T. [ 2]
Metformin N.A. Pruritus Allele C is associated with increased bioavailability (AUC, CL & AUC/CL ratio) when exposed to metformin. [ 1]
 Allele T Click to Show/Hide the Full List of Affected Drugs:         22 Drugs in Total
Tramadol Drug Info Healthy Individuals Correlated with the higher o-desmethyltramadol plasma concentrations in healthy individuals (compare with allele C) [ 3]
Metformin Drug Info Healthy Individuals Correlated with the increased drug exposure in healthy individuals (compare with allele C) [ 4]
Metformin Drug Info Diabetes Mellitus Irrelevant to the drug response in patients (compare with allele C) [ 5]
Metformin Drug Info Polycystic Ovary Syndrome Irrelevant to the drug response in patients (compare with allele C) [ 6]
Proguanil N.A. Discontinuation Allele T is associated with decreased uptake of proguanil as compared to allele C. [ 7]
Antiemetics And Antinauseants N.A. Neutropenia Allele T is associated with decreased response to Antiemetics And Antinauseants as compared to allele C. [ 8]
Ranitidine N.A. Neutropenia Allele T is associated with decreased transport of ranitidine as compared to allele C. [ 9]
Sulfonamides, Urea Derivatives N.A. Hypoventilation Allele T is not associated with response to sulfonamides, urea derivatives in people with Diabetes Mellitus as compared to allele C. [ 10]
Metformin N.A. Overall Survival Allele T is associated with increased exposure to metformin in healthy individuals as compared to allele C. [ 4]
Sumatriptan N.A. Overall Survival Allele T (assigned as low activity phenotype) is associated with increased exposure to sumatriptan in healthy individuals as compared to allele C (assigned as high activity phenotype) . [ 11]
Fenoterol N.A. Overall Survival Allele T are associated with increased exposure to fenoterol in healthy individuals as compared to allele C. [ 12]
Cycloguanil N.A. Overall Survival Allele T are associated with increased concentrations of cycloguanil in healthy individuals as compared to allele C. [ 7]
O-desmethyltramadol N.A. Overall Survival Allele T is associated with increased concentrations of o-desmethyltramadol in people with Pain as compared to allele C. [ 13]
Tramadol N.A. Overall Survival Allele T is associated with decreased dose of tramadol in people with Pain as compared to allele C. [ 13]
Morphine N.A. Postoperative Nausea And Vomiting Allele T is associated with increased likelihood of Postoperative Nausea and Vomiting when treated with morphine in children as compared to allele C. [ 14]
Morphine N.A. Death Allele T is not associated with dose of morphine in people with Pain, Postoperative as compared to allele C. [ 15]
Metformin N.A. Event-free Survival Allele T is not associated with response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele C. [ 5]
Morphine N.A. Nausea Allele T is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele C. [ 15]
Morphine N.A. Pruritus Allele T is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele C. [ 15]
Metformin N.A. Pruritus Allele T is not associated with response to metformin in women with Polycystic Ovary Syndrome as compared to allele C. [ 6]
Fenoterol N.A. Adverse Events Allele T are associated with increased likelihood of adverse events when exposed to fenoterol in healthy individuals as compared to allele C. [ 12]
Tramadol N.A. Drug Toxicity Allele T is associated with higher plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to allele C. [ 3]
 Genotype TT Click to Show/Hide the Full List of Affected Drugs:           6 Drugs in Total
Metformin Drug Info Healthy Individuals Correlated with the decreased drug exposure in healthy individuals (compare with genotype CC) [ 16]
Valganciclovir N.A. Neutropenia Genotype TT is not associated with increased risk of Neutropenia when treated with valganciclovir in people with Kidney Transplantation as compared to genotype CC. [ 17]
Morphine N.A. Overall Survival Genotype TT is associated with decreased clearance of morphine in children with adenotonsillectomy as compared to genotypes CC + CT. [ 18]
Metformin N.A. Pruritus Genotype TT is associated with decreased exposure to metformin in healthy individuals as compared to genotype CC. [ 16]
Metformin N.A. Gastrointestinal Stromal Tumors Patients with the TT genotype who are treated with metformin may have decreased bioavailability of metformin as compared to patients with the CC or CT genotypes, however the opposite is reported in one study, and no association was reported in two studies . Other clinical and genetic factors may also influence bioavailability of metformin. [ 1]
Tramadol N.A. Diabetes Mellitus, Type 2 Patients with the rs12208357 TT genotype may have higher plasma concentrations of O-desmethyltramadol when exposed to tramadol as compared to patients with the CC genotype. This annotation only covers the pharmacokinetic relationship between rs12208357 and tramadol and does not include evidence about clinical outcomes. Other genetic or clinical factors may influence O-desmethyltramadol concentrations. [ 3]
 Genotype CT Click to Show/Hide the Full List of Affected Drugs:           4 Drugs in Total
Rasagiline N.A. Neutropenia Genotype CT is associated with decreased clearance of rasagiline in healthy individuals as compared to genotype CC. [ 19]
Valganciclovir N.A. Neutropenia Genotype CT is not associated with increased risk of Neutropenia when treated with valganciclovir in people with Kidney Transplantation as compared to genotype CC. [ 17]
Metformin N.A. Gastrointestinal Stromal Tumors Patients with the CT genotype and who are treated with metformin may have increased bioavailability of metformin as compared to patients with the TT genotype, however the opposite is reported in one study, and no association was reported in two studies. Other clinical and genetic factors may also influence bioavailability of metformin. [ 1]
Tramadol N.A. Diabetes Mellitus, Type 2 Patients with the rs12208357 CT genotype may have higher plasma concentrations of O-desmethyltramadol when exposed to tramadol as compared to patients with the CC genotype. This annotation only covers the pharmacokinetic relationship between rs12208357 and tramadol and does not include evidence about clinical outcomes. Other genetic or clinical factors may influence O-desmethyltramadol concentrations. [ 3]
 Genotypes CT + TT Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Morphine N.A. Pruritus Genotypes CT + TT is associated with decreased clearance of morphine in children as compared to genotype CC. [ 20]
 Genotype CC Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Metformin N.A. Gastrointestinal Stromal Tumors Patients with the CC genotype who are treated with metformin may have increased bioavailability of metformin as compared to patients with the TT genotypes, however the opposite is reported in one study, and no association was reported in two studies. Other clinical and genetic factors may also influence bioavailability of metformin. [ 1]
Tramadol N.A. Diabetes Mellitus, Type 2 Patients with the rs12208357 CC genotype may have lower plasma concentrations of O-desmethyltramadol when exposed to tramadol as compared to patients with the CT or TT genotype. This annotation only covers the pharmacokinetic relationship between rs12208357 and tramadol and does not include evidence about clinical outcomes. Other genetic or clinical factors may influence O-desmethyltramadol concentrations. [ 3]
Genetic Polymorphism rs2282143
Site of GPD chr6:160136611 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP C>G / C>T
Minor Allele Frequency T=0.0663/332 (Global)
 Genotype CC Click to Show/Hide the Full List of Affected Drugs:           4 Drugs in Total
Metformin Drug Info Healthy Individuals Correlated with the increased drug clearance in healthy individuals (compare with Genotypes CT + TT) [ 21]
Metformin N.A. Hypoventilation Genotype CC is associated with increased clearance of metformin in healthy individuals as compared to genotypes CT + TT. [ 21]
Lamotrigine N.A. Eye Diseases Genotype CC is not associated with concentrations of lamotrigine in people with Epilepsy as compared to genotype CT. [ 22]
Imatinib N.A. Drug Toxicity Genotype CC is not associated with response to imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes CT + TT. [ 23]
 Genotype CT Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Proguanil N.A. Eye Diseases Genotype CT is associated with increased exposure to proguanil in healthy individuals as compared to genotype CC. [ 24]
Metformin N.A. Diabetes Mellitus Patients with the CT genotype may have decreased clearance of metformin as compared to patients with the CC genotype. Other genetic and clinical factors may also influence clearance of metformin. [ 21]
 Allele C Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Lamotrigine N.A. Eye Diseases Allele C is not associated with response to lamotrigine in people with Epilepsy as compared to allele T. [ 22]
 Genotype TT Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus Patients with the TT genotype may have decreased clearance of metformin as compared to patients with the CC genotype. Other genetic and clinical factors may also influence clearance of metformin. [ 21]
Genetic Polymorphism rs35167514
Site of GPD chr6:160139849 (GRCh38.p12)
GPD Type DeletionDeletion
Allele(s) in dbSNP delA
 Genotype DEL Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Tramadol Drug Info Healthy Individuals Correlated with the increased plasma concentrations of o-desmethyltramadol in healthy individuals (compare with allele A) [ 3]
 Genotype del Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Antiemetics And Antinauseants N.A. Discontinuation Allele del is associated with decreased response to Antiemetics And Antinauseants as compared to allele A. [ 8]
Tramadol N.A. Drug Toxicity Allele del is associated with increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to allele A. [ 3]
 Genotype A/del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Tramadol N.A. Recurrence Patients with the A/del genotype may have increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the AA genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Tramadol N.A. Recurrence Patients with the AA genotype may have decreased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the del/del genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
 Genotype del/del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Tramadol N.A. Recurrence Patients with the del/del genotype may have increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the AA genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
Genetic Polymorphism rs36056065
 Allele GTAAGTTG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin Drug Info Diabetes Mellitus Correlated with the gastrointestinal side effects in patients (compare with allele del) [ 25]
 Genotype del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Methadone N.A. Discontinuation Allele del is not associated with increased likelihood of Discontinuation when treated with methadone in people with Opioid-Related Disorders as compared to allele GTAAGTTG. [ 2]
 Genotype GTAAGTTG Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Metformin N.A. Neutropenia Allele GTAAGTTG is associated with gastrointestinal side effects when treated with metformin in people with Diabetes Mellitus, Type 2 as compared to allele del. [ 25]
Metformin N.A. Diabetes Mellitus, Type 2 Allele GTAAGTTG is associated with gastrointestinal side effects when treated with metformin in people with Diabetes Mellitus, Type 2 as compared to allele del. [ 25]
 Genotype GTAAGTTG/GTAAGTTG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the GTAAGTTG/GTAAGTTG genotype and Diabetes Mellitus, Type 2 who are treated with metformin may have increased risk for gastrointestinal side effects as compared to patients with the deldel genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 25]
 Genotype GTAAGTTG/del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the GTAAGTTG/del genotype and Diabetes Mellitus, Type 2 who are treated with metformin may have increased risk for gastrointestinal side effects as compared to patients with the deldel genotype or may have decreased, but not absent, risk for gastrointestinal side effects as compared to patients with the GTAAGTTG/GTAAGTTG genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 25]
 Genotype del/del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the del/del genotype and Diabetes Mellitus, Type 2 who are treated with metformin may have decreased, but not absent, risk for gastrointestinal side effects as compared to patients with the GTAAGTTG/GTAAGTTG genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 25]
Genetic Polymorphism rs628031
Site of GPD chr6:160139813 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP A>C / A>G
Minor Allele Frequency A=0.3123/1564 (Global)
 Allele A Click to Show/Hide the Full List of Affected Drugs:         19 Drugs in Total
Metformin Drug Info Diabetes Mellitus Correlated with the decreased drug response in patients (compare with allele G); Correlated with the gastrointestinal toxicity in patients (compare with allele G) [ 25], [ 27]
Lamotrigine Drug Info Epilepsy Irrelevant to the drug response in patients (compare with Allele G) [ 22]
Metformin N.A. Gastrointestinal Toxicity Allele A is associated with gastrointestinal toxicity when treated with metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 25]
Efavirenz N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Lamivudine N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Lopinavir N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Nevirapine N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Ritonavir N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Zidovudine N.A. Hypoventilation Allele A is not associated with increased resistance to efavirenz, lamivudine, lopinavir, nevirapine, ritonavir and zidovudine in people with HIV Infections as compared to allele G. [ 29]
Metformin N.A. Overall Survival Allele A is associated with decreased response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 27]
Metformin N.A. Overall Survival Allele A is not associated with response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 30]
Imatinib N.A. Pruritus Allele A is not associated with dose of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 31]
Imatinib N.A. Drug Toxicity Allele A is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 31]
Imatinib N.A. Discontinuation Allele A is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 31]
Lamotrigine N.A. Eye Diseases Allele A is not associated with response to lamotrigine in people with Epilepsy as compared to allele G. [ 22]
Imatinib N.A. Neoplasms Allele A is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 31]
Metformin N.A. Diabetes Mellitus, Type 2 Allele A is associated with decreased response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 27]
Metformin N.A. Diabetes Mellitus, Type 2 Allele A is not associated with response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 30]
Metformin N.A. Diabetes Mellitus, Type 2 Allele A is associated with gastrointestinal toxicity when treated with metformin in people with Diabetes Mellitus, Type 2 as compared to allele G. [ 25]
 Genotype GG Click to Show/Hide the Full List of Affected Drugs:         13 Drugs in Total
Lamotrigine Drug Info Epilepsy Correlated with the increased drug dose in patients (compare with genotypes AA + AG) [ 30]
Valganciclovir N.A. Neutropenia Genotype GG is not associated with increased risk of Neutropenia when treated with valganciclovir in people with Kidney Transplantation as compared to genotype AA. [ 17]
Imatinib N.A. Event-free Survival Genotype GG is associated with decreased clearance of imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes AA + AG. [ 32]
Lamotrigine N.A. Pruritus Genotype GG is associated with increased dose of lamotrigine in people with Epilepsy as compared to genotypes AA + AG. [ 30]
Metformin N.A. Drug Toxicity Genotype GG is associated with increased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotypes AA + AG. [ 33]
Imatinib N.A. Drug Toxicity Genotype GG is associated with increased risk of Drug Toxicity when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotypes AA + AG. [ 34]
Imatinib N.A. Neoplasms Genotype GG is associated with decreased clearance of imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes AA + AG. [ 32]
Imatinib N.A. Neoplasms Genotype GG is associated with increased risk of Drug Toxicity when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotypes AA + AG. [ 34]
Imatinib N.A. Neoplasms Patients with the GG genotype and cancer may have decreased clearance of imatinib, as well as an increased response and an increased risk for toxicity when treated with imatinib as compared to patients with the AA or AG genotype. However, one study failed to find an association between this variant and imatinib toxicity. Other genetic and clinical factors may also influence clearance, response, and risk for toxicity in patients receiving imatinib. [ 29]
Lamotrigine N.A. Epilepsy Patients with the rs628031 GG genotype and epilepsy may have decreased concentrations of lamotrigine compared to patients with the AA and AG genotypes. However, conflicting evidence has been reported. This annotation only covers the pharmacokinetic relationship between rs628031 and lamotrigine and does not include evidence about clinical outcomes. Other genetic and clinical factors may affect response to lamotrigine. [ 36]
Metformin N.A. Diabetes Mellitus, Type 2 Genotype GG is associated with increased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotypes AA + AG. [ 33]
Metformin N.A. Diabetes Mellitus, Type 2 Patients with type II diabetes and the rs628031 GG genotype may be at a decreased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the AA or AG genotypes. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
Metformin N.A. Gastrointestinal Toxicity Patients with type II diabetes and the rs628031 GG genotype may be at a decreased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the AA or AG genotypes. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
 Genotypes AA + AG Click to Show/Hide the Full List of Affected Drugs:           8 Drugs in Total
Lamotrigine Drug Info Epilepsy Correlated with the increased drug concentrations in patients (compare with genotype GG) [ 22]
Imatinib N.A. Overall Survival Genotypes AA + AG is associated with decreased response to imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype GG. [ 36]
Metformin N.A. Overall Survival Genotypes AA + AG is associated with increased clinical benefit to metformin in people with Diabetes Mellitus, Type 2 as compared to genotype GG. [ 37]
Metformin N.A. Gastrointestinal Toxicity Genotypes AA + AG is associated with increased likelihood of gastrointestinal toxicity metformin and sulfonamides, urea derivatives in people with Diabetes Mellitus, Type 2 as compared to genotype GG. [ 38]
Sulfonamides, Urea Derivatives N.A. Gastrointestinal Toxicity Genotypes AA + AG is associated with increased likelihood of gastrointestinal toxicity metformin and sulfonamides, urea derivatives in people with Diabetes Mellitus, Type 2 as compared to genotype GG. [ 38]
Lamotrigine N.A. Eye Diseases Genotypes AA + AG is associated with increased concentrations of lamotrigine in people with Epilepsy as compared to genotype GG. [ 22]
Imatinib N.A. Neoplasms Genotypes AA + AG is associated with decreased response to imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype GG. [ 36]
Lamotrigine N.A. Epilepsy Genotypes AA + AG is associated with increased concentrations of lamotrigine in people with Epilepsy as compared to genotype GG. [ 22]
 Genotype AG Click to Show/Hide the Full List of Affected Drugs:           6 Drugs in Total
Valganciclovir N.A. Neutropenia Genotype AG is not associated with increased risk of Neutropenia when treated with valganciclovir in people with Kidney Transplantation as compared to genotype GG. [ 17]
Imatinib N.A. Neoplasms Patients with the AG genotype and cancer may have increased clearance of imatinib, as well as a decreased response and decreased risk for toxicity when treated with imatinib as compared to patients with the GG genotype. However, one study failed to find an association between this variant and imatinib toxicity. Other genetic and clinical factors may also influence clearance, response, and risk for toxicity in patients receiving imatinib. [ 29]
Lamotrigine N.A. Epilepsy Patients with the rs628031 AG genotype and epilepsy may have increased concentrations of lamotrigine compared to patients with the GG genotype. However, conflicting evidence has been reported. This annotation only covers the pharmacokinetic relationship between rs628031 and lamotrigine and does not include evidence about clinical outcomes. Other genetic and clinical factors may affect response to lamotrigine. [ 34]
Metformin N.A. Diabetes Mellitus, Type 2 Patients with type II diabetes and the rs628031 AG genotype may have a decreased response to metformin as compared to patients with the GG genotype but an increased response as compared to patients with the AA genotype. However, conflicting evidence has been reported. Other genetic and clinical factors may also influence a patient's response to metformin. [ 32]
Metformin N.A. Diabetes Mellitus, Type 2 Patients with type II diabetes and the rs628031 AG genotype may be at an increased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the GG genotype but a decreased risk as compared to patients with the AA genotype. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
Metformin N.A. Gastrointestinal Toxicity Patients with type II diabetes and the rs628031 AG genotype may be at an increased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the GG genotype but a decreased risk as compared to patients with the AA genotype. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
 Allele G Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Lamotrigine N.A. Eye Diseases Allele G is not associated with dose of lamotrigine in people with Epilepsy as compared to allele A. [ 34]
Lamotrigine N.A. Epilepsy Allele G is not associated with concentrations of lamotrigine in people with Epilepsy as compared to allele A. [ 34]
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           5 Drugs in Total
Imatinib N.A. Neoplasms Patients with the AA genotype and cancer may have increased clearance of imatinib, as well as a decreased response and decreased risk for toxicity when treated with imatinib as compared to patients with the GG genotype. However, one study failed to find an association between this variant and imatinib toxicity. Other genetic and clinical factors may also influence clearance, response, and risk for toxicity in patients receiving imatinib. [ 29]
Lamotrigine N.A. Epilepsy Patients with the rs628031 AA genotype and epilepsy may have increased concentrations of lamotrigine compared to patients with the GG genotype. However, conflicting evidence has been reported. This annotation only covers the pharmacokinetic relationship between rs628031 and lamotrigine and does not include evidence about clinical outcomes. Other genetic and clinical factors may affect response to lamotrigine. [ 34]
Metformin N.A. Diabetes Mellitus, Type 2 Patients with type II diabetes and the rs628031 AA genotype may have a decreased response to metformin as compared to patients with the AG or GG genotypes. However, conflicting evidence has been reported. Other genetic and clinical factors may also influence a patient's response to metformin. [ 32]
Metformin N.A. Diabetes Mellitus, Type 2 Patients with type II diabetes and the rs628031 AA genotype may be at an increased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the AG or GG genotypes. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
Metformin N.A. Gastrointestinal Toxicity Patients with type II diabetes and the rs628031 AA genotype may be at an increased risk of gastrointestinal toxicity when treated with metformin as compared to patients with the AG or GG genotypes. Other genetic and clinical factors may also influence a patient's risk of toxicity when treated with metformin. [ 25]
Genetic Polymorphism rs683369
Site of GPD chr6:160130172 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A / G>C / G>T
Minor Allele Frequency G=0.1238/620 (Global)
 Genotype CC Click to Show/Hide the Full List of Affected Drugs:           7 Drugs in Total
Imatinib Drug Info Bcr-Abl Positive Chronic Myelogenous Leukemia Correlated with the decreased drug concentrations in patients (compare with genotypes CG + GG); Correlated with the increased drug clearance in patients (compare with genotypes CG + GG) [ 38]
Imatinib N.A. Neutropenia Genotype CC is associated with decreased dose-adjusted trough concentrations of imatinib in people with Gastrointestinal Stromal Tumors as compared to genotypes CG + GG. [ 39]
Imatinib N.A. Overall Survival Genotype CC is associated with decreased response to imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes CG + GG. [ 40]
Imatinib N.A. Pruritus Genotype CC is associated with increased clearance of imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes CG + GG. [ 38]
Imatinib N.A. Drug Toxicity Genotype CC is associated with decreased severity of Drug Toxicity when treated with imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes CG + GG. [ 40]
Imatinib N.A. Gastrointestinal Stromal Tumors Patients with the CC genotype and gastrointestinal stromal tumors (GIST) may have a decreased risk for conjunctival hemorrhage when treated with imatinib as compared to patients with the CG or GG genotype. Other genetic and clinical factors may also influence risk for conjunctival hemorrhage. [ 41]
Imatinib N.A. Chronic Myelogenous Leukemia, Bcr-abl1 Positive Genotype CC is associated with increased clearance of imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotypes CG + GG. [ 38]
 Genotypes CG + GG Click to Show/Hide the Full List of Affected Drugs:           9 Drugs in Total
Imatinib Drug Info Gastrointestinal Stromal Tumors Correlated with the increased conjunctival hemorrhage risk in patients (compare with genotype CC) [ 41]
Nilotinib N.A. Event-free Survival Genotypes CG + GG is not associated with likelihood of event-free survival when treated with nilotinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype CC. [ 43]
Imatinib N.A. Hypoventilation Genotypes CG + GG is associated with decreased response to imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype CC. [ 35]
Cisplatin N.A. Overall Survival Genotypes CG + GG is associated with increased overall survival when treated with cisplatin in people with Esophageal Neoplasms as compared to genotype CC. [ 45]
Imatinib N.A. Event-free Survival Genotypes CG + GG is associated with decreased event-free survival when treated with imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype CC. [ 38]
Imatinib N.A. Drug Toxicity Genotypes CG + GG is associated with increased risk of Drug Toxicity and Eye Disorder when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotype CC. [ 41]
Imatinib N.A. Eye Diseases Genotypes CG + GG is associated with increased risk of Drug Toxicity and Eye Disorder when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotype CC. [ 41]
Imatinib N.A. Gastrointestinal Stromal Tumors Genotypes CG + GG is associated with increased risk of Drug Toxicity and Eye Disorder when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotype CC. [ 41]
Imatinib N.A. Chronic Myelogenous Leukemia, Bcr-abl1 Positive Genotypes CG + GG is associated with decreased event-free survival when treated with imatinib in people with Leukemia, Myelogenous, Chronic, BCR-ABL Positive as compared to genotype CC. [ 38]
 Allele G Click to Show/Hide the Full List of Affected Drugs:           3 Drugs in Total
Imatinib N.A. Pruritus Allele G is not associated with dose of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele C. [ 29]
Imatinib N.A. Drug Toxicity Allele G is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele C. [ 29]
Imatinib N.A. Discontinuation Allele G is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele C. [ 29]
 Genotype CG Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Imatinib N.A. Gastrointestinal Stromal Tumors Patients with the CG genotype and gastrointestinal stromal tumors (GIST) may have an increased risk for conjunctival hemorrhage when treated with imatinib as compared to patients with the CC genotype. Other genetic and clinical factors may also influence risk for conjunctival hemorrhage. [ 41]
Imatinib N.A. Chronic Myelogenous Leukemia, Bcr-abl1 Positive Patients with the CG genotype and chronic myeloid leukemia may have decreased clearance of imatinib, as well as decreased event-free survival time, as compared to patients with the CC genotype. Other genetic and clinical factors may also influence clearance of imatinib and event-free survival time. [ 38]
 Genotype GG Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Imatinib N.A. Gastrointestinal Stromal Tumors Patients with the GG genotype and gastrointestinal stromal tumors (GIST) may have an increased risk for conjunctival hemorrhage when treated with imatinib as compared to patients with the CC genotype. Other genetic and clinical factors may also influence risk for conjunctival hemorrhage. [ 41]
Imatinib N.A. Chronic Myelogenous Leukemia, Bcr-abl1 Positive Patients with the GG genotype and chronic myeloid leukemia may have decreased clearance of imatinib, as well as decreased event-free survival time, as compared to patients with the CC genotype. Other genetic and clinical factors may also influence clearance of imatinib and event-free survival time. [ 38]
Genetic Polymorphism rs72552763
Site of GPD chr6:160139849-160139853 (GRCh38.p12)
GPD Type Indel Insertion and Deletion
Allele(s) in dbSNP delGAT
 Genotype GAT/DEL Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Metformin Drug Info Diabetes Mellitus Correlated with the decreased drug trough steady-state concentration in patients (compare with genotype GAt/GAt) [ 44]
Metformin N.A. Diabetes Mellitus Patients with the GAT/DEL genotype who are treated with metformin may have a decreased trough metformin steady-state concentration as compared to patients with the GAT/GAT genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 44]
 Genotype del Click to Show/Hide the Full List of Affected Drugs:         10 Drugs in Total
Ranitidine N.A. Hypersensitivity Allele del is associated with decreased transport of ranitidine as compared to allele GAT. [ 9]
Mercaptopurine N.A. Infectious Disease Allele del is associated with increased severity of Infection when treated with mercaptopurine in children with Precursor Cell Lymphoblastic Leukemia-Lymphoma as compared to allele GAT. [ 46]
Morphine N.A. Nausea Allele del is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele GAT. [ 15]
Morphine N.A. Pruritus Allele del is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele GAT. [ 15]
Morphine N.A. Pruritus Allele del is not associated with dose of morphine in people with Pain, Postoperative as compared to allele GAT. [ 15]
Sulfonamides, Urea Derivatives N.A. Neutropenia Allele del is not associated with response to sulfonamides, urea derivatives in people with Diabetes Mellitus as compared to allele GAT. [ 10]
Metformin N.A. Neutropenia Allele del is not associated with exposure to metformin as compared to allele GAT. [ 4]
Metformin N.A. Neutropenia Allele del is not associated with response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele GAT. [ 5]
Metformin N.A. Neutropenia Allele del is not associated with CLrenal nor the secretory clearance (CLsec) of metformin when exposed to metformin in healthy individuals as compared to allele GAT. [ 51]
Proguanil N.A. Neutropenia Allele del is associated with decreased uptake of proguanil as compared to allele GAT. [ 7]
 Genotype del/del Click to Show/Hide the Full List of Affected Drugs:           4 Drugs in Total
Metformin N.A. Neutropenia Genotype del/del is associated with decreased exposure to metformin in healthy individuals as compared to genotype GAT/GAT. [ 16]
Morphine N.A. Neutropenia Genotype del/del is associated with decreased clearance of morphine in children with adenotonsillectomy as compared to genotypes GAT/GAT + GAT/del. [ 18]
Morphine N.A. Hypoventilation Genotype del/del is associated with increased likelihood of Hypoventilation when treated with morphine in children as compared to genotypes GAT/GAT + GAT/del. [ 14]
Metformin N.A. Diabetes Mellitus Patients with the del/del genotype were not studied but patients with the GAT/DEL genotype who are treated with metformin may have a decreased trough metformin steady-state concentration as compared to patients with the GAT/GAT genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 44]
 Genotypes GAT/del + del/del Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Morphine N.A. Neutropenia Genotypes GAT/del + del/del is associated with decreased clearance of morphine in children as compared to genotype GAT/GAT. [ 20]
 Genotype GAT/del Click to Show/Hide the Full List of Affected Drugs:           3 Drugs in Total
Metformin N.A. Neutropenia Genotype GAT/del is associated with decreased trough metformin steady-state concentration when treated with metformin in people with Diabetes Mellitus, Type 2 as compared to genotype GAT/GAT. [ 44]
Metformin N.A. Gastrointestinal Toxicity Genotype GAT/del is associated with increased likelihood of gastrointestinal toxicity metformin and sulfonamides, urea derivatives in people with Diabetes Mellitus, Type 2 as compared to genotype GAT/GAT. [ 37]
Sulfonamides, Urea Derivatives N.A. Gastrointestinal Toxicity Genotype GAT/del is associated with increased likelihood of gastrointestinal toxicity metformin and sulfonamides, urea derivatives in people with Diabetes Mellitus, Type 2 as compared to genotype GAT/GAT. [ 37]
 Genotype GAT Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Neutropenia Allele GAT is not associated with response to metformin in women with Polycystic Ovary Syndrome as compared to allele del. [ 6]
 Genotype GAT/GAT Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus Patients with the GAT/GAT genotype who are treated with metformin may have an increased trough metformin steady-state concentration as compared to patients with the GAT/DEL genotype. Other genetic and clinical factors may also influence a patient's response to metformin. [ 44]
Genetic Polymorphism rs594709
Site of GPD chr6:160134722 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A
Minor Allele Frequency G=0.3179/1592 (Global)
 Genotypes AA + AG Click to Show/Hide the Full List of Affected Drugs:           3 Drugs in Total
Metformin Drug Info Diabetes Mellitus Correlated with the increased drug response in patients (compare with genotype GG) [ 47]
Metformin N.A. Pruritus Genotypes AA + AG are associated with increased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotype GG. [ 47]
Metformin N.A. Diabetes Mellitus, Type 2 Genotypes AA + AG are associated with increased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotype GG. [ 47]
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the AA genotype and Type 2 Diabetes may have improved response to metformin compared to patients with the GG genotype. Other genetic and clinical factors may affects response to metformin. [ 47]
 Genotype AG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the AG genotype and Type 2 Diabetes may have improved response to metformin compared to patients with the GG genotype. Other genetic and clinical factors may affects response to metformin. [ 47]
 Genotype GG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Diabetes Mellitus, Type 2 Patients with the GG genotype and Type 2 Diabetes may have decreased response to metformin compared to patients with the AA and AG genotypes. Other genetic and clinical factors may affects response to metformin. [ 47]
Genetic Polymorphism rs55918055
Site of GPD chr6:160122197 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP T>C
Minor Allele Frequency T=0.9990/1977 (Global)
 Allele C Click to Show/Hide the Full List of Affected Drugs:           8 Drugs in Total
Ranitidine N.A. Hypersensitivity Allele C is associated with decreased transport of ranitidine as compared to allele T. [ 9]
Antiemetics And Antinauseants N.A. Neutropenia Allele C is associated with decreased response to Antiemetics And Antinauseants as compared to allele T. [ 8]
Proguanil N.A. Neutropenia Allele C is associated with decreased uptake of proguanil as compared to allele T. [ 7]
Fenoterol N.A. Overall Survival Allele C are associated with increased exposure to fenoterol in healthy individuals as compared to allele T. [ 12]
Sumatriptan N.A. Overall Survival Allele C (assigned as low activity phenotype) is associated with increased exposure to sumatriptan in healthy individuals as compared to allele T (assigned as high activity phenotype) . [ 11]
O-desmethyltramadol N.A. Overall Survival Allele C is associated with increased concentrations of o-desmethyltramadol in people with Pain as compared to allele T. [ 13]
Tramadol N.A. Overall Survival Allele C is associated with decreased dose of tramadol in people with Pain as compared to allele T. [ 13]
Fenoterol N.A. Adverse Events Allele C are associated with increased likelihood of adverse events when exposed to fenoterol in healthy individuals as compared to allele T. [ 12]
 Genotypes CC + CT Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Morphine N.A. Pruritus Genotypes CC + CT is associated with decreased clearance of morphine in children as compared to genotype TT. [ 20]
Genetic Polymorphism rs34059508
Site of GPD chr6:160154805 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A
Minor Allele Frequency G=0.9940/1967 (Global)
 Allele A Click to Show/Hide the Full List of Affected Drugs:         14 Drugs in Total
Ranitidine N.A. Hypersensitivity Allele A is associated with decreased transport of ranitidine as compared to allele G. [ 9]
Proguanil N.A. Vomiting Allele A is associated with decreased uptake of proguanil as compared to allele G. [ 7]
Antiemetics And Antinauseants N.A. Neutropenia Allele A is associated with decreased response to Antiemetics And Antinauseants as compared to allele G. [ 8]
Metformin N.A. Overall Survival Allele A is not associated with CLrenal nor the secretory clearance (CLsec) of metformin when exposed to metformin in healthy individuals as compared to allele G. [ 46]
Metformin N.A. Overall Survival Allele A is not associated with exposure to metformin as compared to allele G. [ 4]
Sumatriptan N.A. Overall Survival Allele A (assigned as low activity phenotype) is associated with increased exposure to sumatriptan in healthy individuals as compared to allele G (assigned as high activity phenotype) . [ 11]
Fenoterol N.A. Overall Survival Allele A are associated with increased exposure to fenoterol in healthy individuals as compared to allele G. [ 12]
Tramadol N.A. Overall Survival Allele A is associated with decreased dose of tramadol in people with Pain as compared to allele G. [ 13]
O-desmethyltramadol N.A. Overall Survival Allele A is associated with increased concentrations of o-desmethyltramadol in people with Pain as compared to allele G. [ 13]
Morphine N.A. Death Allele A is not associated with exposure to morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Morphine N.A. Nausea Allele A is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Morphine N.A. Pruritus Allele A is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Metformin N.A. Pruritus Allele A is associated with increased bioavailability when exposed to metformin. [ 1]
Fenoterol N.A. Adverse Events Allele A are associated with increased likelihood of adverse events when exposed to fenoterol in healthy individuals as compared to allele G. [ 12]
 Genotype AG Click to Show/Hide the Full List of Affected Drugs:           7 Drugs in Total
Rasagiline N.A. Neutropenia Genotype AG is associated with increased clearance of rasagiline in healthy individuals as compared to genotype GG. [ 19]
Valganciclovir N.A. Neutropenia Genotype AG is not associated with increased risk of Neutropenia when treated with valganciclovir in people with Kidney Transplantation as compared to genotype GG. [ 17]
Hydrochlorothiazide N.A. Neutropenia Genotype AG is associated with increased dose-adjusted trough concentrations of hydrochlorothiazide null olmesartan in healthy individuals as compared to genotype GG. [ 50]
Olmesartan N.A. Neutropenia Genotype AG is associated with increased dose-adjusted trough concentrations of hydrochlorothiazide null olmesartan in healthy individuals as compared to genotype GG. [ 50]
Hydrochlorothiazide N.A. Dizziness Genotype AG is associated with increased likelihood of Dizziness when treated with hydrochlorothiazide and olmesartan in healthy individuals as compared to genotype GG. [ 50]
Olmesartan N.A. Dizziness Genotype AG is associated with increased likelihood of Dizziness when treated with hydrochlorothiazide and olmesartan in healthy individuals as compared to genotype GG. [ 50]
Olanzapine N.A. Drug Toxicity Genotype AG is associated with increased exposure to olanzapine in healthy individuals as compared to genotype GG. [ 51]
 Genotypes AA + AG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Morphine N.A. Overall Survival Genotypes AA + AG is associated with decreased clearance of morphine in children as compared to genotype GG. [ 20]
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Morphine N.A. Overall Survival Genotype AA is associated with decreased clearance of morphine in children with adenotonsillectomy as compared to genotypes AG + GG. [ 18]
Olanzapine N.A. Recurrence There is currently no available evidence regarding the association between the rs34059508 AA genotype and exposure to olanzapine. However, patients with the AG genotype may have increased exposure to olanzapine as compared to patients with the GG genotype. This annotation only covers the pharmacokinetic relationship between rs34059508 and olanzapine and does not include evidence about clinical outcomes. Other genetic and clinical factors may also affect exposure to olanzapine. [ 49]
 Genotype GG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Olanzapine N.A. Recurrence Patients with the rs34059508 GG genotype may have decreased exposure to olanzapine as compared to patients with the AG genotype. This annotation only covers the pharmacokinetic relationship between rs34059508 and olanzapine and does not include evidence about clinical outcomes. Other genetic and clinical factors may also affect exposure to olanzapine. [ 49]
Genetic Polymorphism rs34130495
Site of GPD chr6:160139792 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A
Minor Allele Frequency G=0.9940/1967 (Global)
 Allele A Click to Show/Hide the Full List of Affected Drugs:         13 Drugs in Total
Antiemetics And Antinauseants N.A. Discontinuation Allele A is associated with decreased response to Antiemetics And Antinauseants as compared to allele G. [ 8]
Proguanil N.A. Neutropenia Allele A is associated with decreased uptake of proguanil as compared to allele G. [ 7]
Ranitidine N.A. Neutropenia Allele A is associated with decreased transport of ranitidine as compared to allele G. [ 9]
Fenoterol N.A. Overall Survival Allele A are associated with increased exposure to fenoterol in healthy individuals as compared to allele G. [ 12]
Sumatriptan N.A. Overall Survival Allele A (assigned as low activity phenotype) is associated with increased exposure to sumatriptan in healthy individuals as compared to allele G (assigned as high activity phenotype) . [ 11]
Cycloguanil N.A. Overall Survival Allele A are associated with increased concentrations of cycloguanil in healthy individuals as compared to allele G. [ 7]
O-desmethyltramadol N.A. Overall Survival Allele A is associated with increased concentrations of o-desmethyltramadol in people with Pain as compared to allele G (assigned as low activity phenotype) . [ 13]
Tramadol N.A. Overall Survival Allele A is associated with decreased dose of tramadol in people with Pain as compared to allele G. [ 13]
Morphine N.A. Nausea Allele A is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Morphine N.A. Pruritus Allele A is not associated with severity of Nausea or Pruritus when treated with morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Fenoterol N.A. Adverse Events Allele A are associated with increased likelihood of adverse events when exposed to fenoterol in healthy individuals as compared to allele G. [ 12]
Morphine N.A. Eye Diseases Allele A is not associated with dose of morphine in people with Pain, Postoperative as compared to allele G. [ 15]
Tramadol N.A. Drug Toxicity Allele A is associated with increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals. [ 3]
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Morphine N.A. Overall Survival Genotype AA is associated with decreased clearance of morphine in children with adenotonsillectomy as compared to genotypes AG + GG. [ 18]
Tramadol N.A. Neoplasms Patients with the AA genotype may have increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the GG genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
 Genotypes AA + AG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Morphine N.A. Pruritus Genotypes AA + AG is associated with decreased clearance of morphine in children as compared to genotype GG. [ 20]
 Genotype GG Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
O-desmethyltramadol N.A. Pruritus Genotype GG is associated with decreased concentrations of o-desmethyltramadol in people with Death as compared to genotype AG. [ 50]
Tramadol N.A. Neoplasms Patients with the GG genotype may have decreased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the AA or AG genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
 Genotype AG Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Tramadol N.A. Neoplasms Patients with the AG genotype may have increased plasma concentrations of O-desmethyltramadol when exposed to tramadol in healthy individuals as compared to patients with the GG genotype. Other genetic or clinical factors may also influence the clearance of tramadol. [ 3]
Genetic Polymorphism rs6935207
Site of GPD chr6:160120141 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A / G>C / G>T
Minor Allele Frequency G=0.6500/1286 (Global)
 Allele A Click to Show/Hide the Full List of Affected Drugs:           8 Drugs in Total
Tropisetron N.A. Vomiting Allele A is not associated with likelihood of Vomiting when treated with tropisetron in people with Neoplasms as compared to allele G. [ 51]
Metformin N.A. Overall Survival Allele A is not associated with clearance of metformin in healthy individuals as compared to allele G. [ 51]
Cycloguanil N.A. Overall Survival Allele A is not associated with exposure to cycloguanil, fenoterol or sumatriptan in healthy individuals as compared to allele G. [ 51]
Fenoterol N.A. Overall Survival Allele A is not associated with exposure to cycloguanil, fenoterol or sumatriptan in healthy individuals as compared to allele G. [ 51]
Sumatriptan N.A. Overall Survival Allele A is not associated with exposure to cycloguanil, fenoterol or sumatriptan in healthy individuals as compared to allele G. [ 51]
Imatinib N.A. Pruritus Allele A is not associated with dose of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 29]
Imatinib N.A. Drug Toxicity Allele A is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 29]
Imatinib N.A. Discontinuation Allele A is not associated with risk of Drug Toxicity and Discontinuation of imatinib in people with Gastrointestinal Stromal Tumors as compared to allele G. [ 29]
Genetic Polymorphism rs1867351
Site of GPD chr6:160122091 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP T>A / T>C
Minor Allele Frequency T=0.7210/1426 (Global)
 Genotype TT Click to Show/Hide the Full List of Affected Drugs:           3 Drugs in Total
Imatinib N.A. Periorbital Edema Genotype TT is associated with increased likelihood of periorbital edema when treated with imatinib in people with Gastrointestinal Stromal Tumors as compared to genotypes CC + CT. [ 39]
N-desmethyltramadol N.A. Pruritus Genotype TT is associated with decreased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotypes CC + CT. [ 50]
O-desmethyltramadol N.A. Pruritus Genotype TT is associated with decreased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotypes CC + CT. [ 50]
 Allele C Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Overall Survival Allele C is not associated with exposure to metformin as compared to allele T. [ 4]
Genetic Polymorphism rs1349294037
Site of GPD chr6:160139877 (GRCh38.p12)
GPD Type Deletion
 Genotype TAAGTTGT/TAAGTTGT Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Sumatriptan N.A. Gastrointestinal Toxicity Genotype TAAGTTGT/TAAGTTGT is associated with increased concentrations of sumatriptan as compared to genotype del/del. [ 52]
Fenoterol N.A. Gastrointestinal Toxicity Genotype TAAGTTGT/TAAGTTGT is not associated with increased concentrations of fenoterol as compared to genotype del/del. [ 52]
Genetic Polymorphism rs41267797
Site of GPD chr6:160155979 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A
Minor Allele Frequency G=0.9330/1846 (Global)
 Genotype AG Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
N-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype AG is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype GG. [ 50]
O-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype AG is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype GG. [ 50]
Genetic Polymorphism rs35235578
Site of GPD chr6:160136672 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP C>T
Minor Allele Frequency C=0.9810/1941 (Global)
 Genotype CT Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
N-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype CT is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype CC. [ 50]
O-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype CT is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype CC. [ 50]
Genetic Polymorphism rs9457841
Site of GPD chr6:160129897 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP T>A / T>C / T>G
Minor Allele Frequency T=0.5620/1112 (Global)
 Allele C Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
N-desmethyltramadol N.A. Gastrointestinal Toxicity Allele C is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to allele T. [ 50]
O-desmethyltramadol N.A. Gastrointestinal Toxicity Allele C is associated with increased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to allele T. [ 50]
Genetic Polymorphism rs34134157
Site of GPD chr6:160132274 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP C>T
Minor Allele Frequency C=0.9860/1951 (Global)
 Genotype CC Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
N-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype CC is associated with decreased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype CT. [ 50]
O-desmethyltramadol N.A. Gastrointestinal Toxicity Genotype CC is associated with decreased concentrations of n-desmethyltramadol and o-desmethyltramadol in people with Death as compared to genotype CT. [ 50]
Genetic Polymorphism rs622342
Site of GPD chr6:160151834 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP C>A / C>G
Minor Allele Frequency C=0.2650/524 (Global)
 Genotype AA Click to Show/Hide the Full List of Affected Drugs:           9 Drugs in Total
Metformin N.A. Overall Survival Genotype AA is not associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Overall Survival Genotype AA is associated with decreased CL renal reference and lower and CL sec reference when exposed to metformin in healthy individuals as compared to genotype CC. [ 46]
Metformin N.A. Diabetes Mellitus Genotype AA is not associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Diabetes Mellitus Patients with the AA genotype and the GG genotype at rs2289669 who have diabetes may have a better response to metformin, as measured by a larger reduction in HbA1c levels, as compared to patients with the CC genotype and the GG genotype at rs2289669. This association is not significant when compared to patients with the CC genotype and the AG or AA genotype at rs2289699. Other genetic and clinical factors may also influence a patient's reduction in HbA1c levels with metformin treatment. [ 55]
Amantadine N.A. Parkinson Disease Patients with the AA genotype and Parkinson disease may require decreased doses of anti-Parkinsonian drugs, and may have a decreased risk of mortality, as compared to patients with the AC or CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 56]
Anticholinergics N.A. Parkinson Disease Patients with the AA genotype and Parkinson disease may require decreased doses of anti-Parkinsonian drugs, and may have a decreased risk of mortality, as compared to patients with the AC or CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 56]
Dopamine Agonists N.A. Parkinson Disease Patients with the AA genotype and Parkinson disease may require decreased doses of anti-Parkinsonian drugs, and may have a decreased risk of mortality, as compared to patients with the AC or CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 56]
Levodopa N.A. Parkinson Disease Patients with the AA genotype and Parkinson disease may require decreased doses of anti-Parkinsonian drugs, and may have a decreased risk of mortality, as compared to patients with the AC or CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 56]
Selegiline N.A. Parkinson Disease Patients with the AA genotype and Parkinson disease may require decreased doses of anti-Parkinsonian drugs, and may have a decreased risk of mortality, as compared to patients with the AC or CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 56]
 Genotype AC Click to Show/Hide the Full List of Affected Drugs:           9 Drugs in Total
Metformin N.A. Overall Survival Genotype AC is associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Eye Diseases Genotype AC is associated with increased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotypes AA + CC. [ 57]
Metformin N.A. Diabetes Mellitus Genotype AC is associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Diabetes Mellitus Patients with the AC genotype and the GG genotype at rs2289669 who have diabetes may have a poorer response to metformin, as measured by a smaller reduction in HbA1c levels, as compared to patients with the AA genotype. Although contradictory information exists for this association, and may be dependent on the absence of an A allele at rs2289669. Other genetic and clinical factors may also influence a patient's reduction in HbA1c levels with metformin treatment. [ 54]
Amantadine N.A. Parkinson Disease Patients with the AC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs and may have an increased risk of mortality as compared to patients with the AA genotype, and require decreased doses and have a decreased risk of mortality as compared to patients with the CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Anticholinergics N.A. Parkinson Disease Patients with the AC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs and may have an increased risk of mortality as compared to patients with the AA genotype, and require decreased doses and have a decreased risk of mortality as compared to patients with the CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Dopamine Agonists N.A. Parkinson Disease Patients with the AC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs and may have an increased risk of mortality as compared to patients with the AA genotype, and require decreased doses and have a decreased risk of mortality as compared to patients with the CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Levodopa N.A. Parkinson Disease Patients with the AC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs and may have an increased risk of mortality as compared to patients with the AA genotype, and require decreased doses and have a decreased risk of mortality as compared to patients with the CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Selegiline N.A. Parkinson Disease Patients with the AC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs and may have an increased risk of mortality as compared to patients with the AA genotype, and require decreased doses and have a decreased risk of mortality as compared to patients with the CC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
 Genotype CC Click to Show/Hide the Full List of Affected Drugs:           8 Drugs in Total
Metformin N.A. Overall Survival Genotype CC is associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Diabetes Mellitus Genotype CC is associated with response to metformin in people with genetic variation at rs2289669. [ 53]
Metformin N.A. Diabetes Mellitus Patients with the CC genotype and the GG genotype at rs2289669 who have diabetes may have a poorer response to metformin, as measured by a smaller reduction in HbA1c levels, as compared to patients with the AA genotype and the GG genotype at rs2289669. This association is no longer significant in patients with the CC genotype and the AG or AA genotype at rs2289669. Other genetic and clinical factors may also influence a patient's response to metformin treatment. [ 54]
Amantadine N.A. Parkinson Disease Patients with the CC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs, and may have an increased risk of mortality, as compared to patients with the AA and AC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Anticholinergics N.A. Parkinson Disease Patients with the CC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs, and may have an increased risk of mortality, as compared to patients with the AA and AC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Dopamine Agonists N.A. Parkinson Disease Patients with the CC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs, and may have an increased risk of mortality, as compared to patients with the AA and AC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Levodopa N.A. Parkinson Disease Patients with the CC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs, and may have an increased risk of mortality, as compared to patients with the AA and AC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
Selegiline N.A. Parkinson Disease Patients with the CC genotype and Parkinson disease may require increased doses of anti-Parkinsonian drugs, and may have an increased risk of mortality, as compared to patients with the AA and AC genotype. Other genetic and clinical factors may also influence dose of anti-Parkinsonian drugs and risk of mortality. [ 55]
 Allele A Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Metformin N.A. Overall Survival Allele A is not associated with exposure to metformin as compared to allele C. [ 4]
Metformin N.A. Death Allele A is associated with increased response to metformin in people with Diabetes Mellitus as compared to allele C. [ 58]
 Genotypes AC + CC Click to Show/Hide the Full List of Affected Drugs:           2 Drugs in Total
Metformin N.A. Overall Survival Genotypes AC + CC is associated with increased clinical benefit to metformin in people with Diabetes Mellitus, Type 2 as compared to genotype AA. [ 36]
Metformin N.A. Pruritus Genotypes AC + CC is associated with decreased response to metformin in people with Diabetes Mellitus, Type 2 as compared to genotype AA. [ 59]
 Allele C Click to Show/Hide the Full List of Affected Drugs:         17 Drugs in Total
Amantadine N.A. Death Allele C is associated with increased risk of Death when treated with amantadine, Anticholinergics, Dopamine agonists, levodopa or selegiline in people with Parkinson Disease. [ 55]
Anticholinergics N.A. Death Allele C is associated with increased risk of Death when treated with amantadine, Anticholinergics, Dopamine agonists, levodopa or selegiline in people with Parkinson Disease. [ 55]
Dopamine Agonists N.A. Death Allele C is associated with increased risk of Death when treated with amantadine, Anticholinergics, Dopamine agonists, levodopa or selegiline in people with Parkinson Disease. [ 55]
Levodopa N.A. Death Allele C is associated with increased risk of Death when treated with amantadine, Anticholinergics, Dopamine agonists, levodopa or selegiline in people with Parkinson Disease. [ 55]
Selegiline N.A. Death Allele C is associated with increased risk of Death when treated with amantadine, Anticholinergics, Dopamine agonists, levodopa or selegiline in people with Parkinson Disease. [ 55]
Metformin N.A. Event-free Survival Allele C is not associated with response to metformin in people with Diabetes Mellitus, Type 2 as compared to allele A. [ 5]
Amantadine N.A. Pruritus Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Anticholinergics N.A. Pruritus Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Levodopa N.A. Pruritus Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Selegiline N.A. Pruritus Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Metformin N.A. Pruritus Allele C is associated with decreased reduction in HbA1c levels when treated with metformin in people with Diabetes Mellitus. [ 54]
Metformin N.A. Diabetes Mellitus Allele C is associated with decreased reduction in HbA1c levels when treated with metformin in people with Diabetes Mellitus. [ 54]
Amantadine N.A. Parkinson Disease Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Anticholinergics N.A. Parkinson Disease Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Dopamine Agonists N.A. Parkinson Disease Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Levodopa N.A. Parkinson Disease Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Selegiline N.A. Parkinson Disease Allele C is associated with increased dose of amantadine, Anticholinergics, levodopa or selegiline in people with Parkinson Disease. [ 55]
Genetic Polymorphism rs461473
Site of GPD chr6:160122530 (GRCh38.p12)
GPD Type SNP
Allele(s) in dbSNP G>A
Minor Allele Frequency G=0.9620/1903 (Global)
 Allele A Click to Show/Hide the Full List of Affected Drugs:           1 Drugs in Total
Metformin N.A. Overall Survival Allele A is not associated with CLrenal nor the secretory clearance (CLsec) of metformin when exposed to metformin in healthy individuals as compared to allele G. [ 46]
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