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GTR Home > Conditions/Phenotypes > Nortriptyline response

Summary

Nortriptyline is a tricyclic that can be identified by the secondary amine in its chemical structure. Tricyclics are commonly prescribed for psychological disorders and pain management. Genetic variants in cytochrome P450 2D6 (CYP2D6) may affect treatment success of nortriptyline or other tricyclics with the secondary amine functional group. Patients with poor metabolizer variants of CYP2D6 may require reductions in dose or alternative agents in order to circumvent common adverse anticholinergic, central nervous system, or cardiac effects. Guidelines regarding the use of pharmacogenomic tests in dosing for nortriptyline and other tricyclics have been published in Clinical Pharmacology and Therapeutics by the Clinical Pharmacogenetics Implementation Consortium (CPIC) and are available on the PharmGKB website. [from PharmGKB]

Available tests

16 tests are in the database for this condition.

Genes See tests for all associated and related genes

  • Also known as: CPD6, CYP2D, CYP2D7AP, CYP2D7BP, CYP2D7P2, CYP2D8P2, CYP2DL1, CYPIID6, P450-DB1, P450C2D, P450DB1, CYP2D6
    Summary: cytochrome P450 family 2 subfamily D member 6 (gene/pseudogene)

Suggested reading

  • CPIC, 2017
    Clinical pharmacogenetics implementation consortium guideline (CPIC) for CYP2D6 and CYP2C19 genotypes and dosing of tricyclic antidepressants: 2016 update

Consumer resources

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