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New AMP testing recommendations for alleles in CYP3A4 and CYP3A5

The Association for Molecular Pathology, Clinical Pharmacogenetics Implementation Consortium, College of American Pathologists, Dutch Pharmacogenetics Working Group of the Royal Dutch Pharmacists Association, European Society for Pharmacogenomics and Personalized Therapy, and Pharmacogenomics Knowledgebase have jointly published recommendations on what constitutes the minimum panel of variant alleles (tier 1) and an

Insights on CYP2C19 and phenoconversion

Phenoconversion in the PGx context is a drug-drug interaction that impacts a drug metabolizing phenotype such that it mimics the effects of a metabolizer genotype (see blog from October 2022). Historically much of the discussion on phenoconversion has focused on CYP2D6. A new paper in Frontiers in Pharmacology investigates the

ClinGen Pharmacogenomics Working Group (PGxWG) Survey To Close Soon

The ClinGen Pharmacogenomics Working Group (PGxWG)'s anonymous survey will close soon after this Friday, June 30, 2023. Our goal is to gather opinions and feedback regarding the criteria and terminology that should be used to define clinical validity and actionability for pharmacogenes and variants. If you have not

ClinPGx Sessions at PGRN 2023 Conference and ClinGen Summer Workshops

At the upcoming PGRN 2023 annual conference in Memphis, Dr. Teri E. Klein, the principle investigator for PharmGKB, ClinGen, CPIC and PharmCAT, will hold a town hall discussion on ClinPGx: a single integrated resource for Pharmacogenomics (PGx). Dr. Klein will discuss the challenge of the separation of pharmacogenomic resources from

ClinGen Pharmacogenomics Working Group (PGxWG) Survey Open Until June 30, 2023

The ClinGen Pharmacogenomics Working Group (PGxWG)'s anonymous survey is OPEN until June 30, 2023. Our goal is to gather opinions and feedback regarding the criteria and terminology that should be used to define clinical validity and actionability for pharmacogenes and variants. Please help disseminate to ALL (clinicians, pharmacists,

Announcement of PharmVar Content Changes

PharmVar continues to evolve and strive to offer high-quality content to our global users. To allow us to bring new clinically relevant content to PharmVar we needed to make some difficult decisions and ‘retire’ several CYP genes. This decision is based on a newly developed points-based rating system (0-100 points)

CYP3A5 genotyping is a more accurate predictor of drug response than race alone

A new paper in Journal of Clinical Pharmacology from a group at Indiana University [PMID:37042314] implemented genotyping for CYP3A5 in a kidney transplant center. The team used CPIC guidelines for tacrolimus dosing based on CYP3A5 genotype. Implementation included provider education and clinical decision support in the electronic medical record.

CPIC Guideline for CYP2D6, CYP2C19, CYP2B6, SLC6A4 and HTR2A Genotypes and Serotonin Reuptake Inhibitor Antidepressants

The CPIC guideline for CYP2D6, CYP2C19, CYP2B6, SLC6A4 and HTR2A genotypes and Serotonin Reuptake Inhibitor Antidepressants has been published in the journal Clinical Pharmacology and Therapeutics. This new guideline updates the CPIC guideline for Selective Serotonin Reuptake Inhibitors and CYP2D6 and CYP2C19, and includes additional Serotonin Reuptake Inhibitor Antidepressants and

It’s national poetry month again!

I am not a mouse. It’s the reference allele (hg38). I am not a mouse. It's the common variant In these folks tested. Saw on minus strand G is the major allele In this group tested. C is the minor It’s the reference allele (hg38). Last

CYP2D6 allele function update

The CYP2D6 allele functionality file has been re-evaluated and updated by experts involved in CYP2D6-related CPIC guidelines. CYP2D6 functions are now assigned up to star allele 163. Part of the re-evaluation focused on alleles that include 100C>T (P34S) (*10 key SNP). Furthermore, the activity value of several decreased