If you've already taken a 23andMe test, you're sitting on pharmacogenetic data you probably don't know you have. Buried in your raw genetic data file are the variants for CYP2D6, CYP2C19, CYP2C9, SLCO1B1, and other genes that determine how your body processes over 100 common medications. You don't need a separate test or a doctor's order to access this information. You just need a service that knows how to read it.
A pharmacogenetic report from your 23andMe data is informational and should not replace medical advice. Never change or stop medications based solely on genetic results. Always discuss your pharmacogenetic report with your healthcare provider before making any treatment changes.
23andMe's genotyping chip captures hundreds of thousands of genetic variants, including many of the key pharmacogenetic SNPs used in clinical PGx testing. The variants for CYP2D6, CYP2C19, CYP2C9, SLCO1B1, VKORC1, and other drug-metabolizing genes are in your raw data file. 23andMe just doesn't interpret them for drug response in their standard health reports.
23andMe lets you download your raw genetic data as a text file from your account settings. This file contains your genotype at every position 23andMe tested. Services like Gene2Rx can upload this file and extract the pharmacogenetic variants to generate a comprehensive drug response report.
Clinical pharmacogenetic tests like GeneSight and Genomind cost hundreds to thousands of dollars and require a new DNA sample plus a provider order. If you already have 23andMe data, you can get a pharmacogenetic report for a fraction of the price since no new lab work is needed. You're just unlocking information you've already paid for.
23andMe does offer a basic pharmacogenetics report as part of their Health + Ancestry service, but it only covers a handful of drugs and genes. A dedicated PGx service like Gene2Rx extracts far more variants from your raw data and maps them to over 100 medications across psychiatry, cardiology, pain management, oncology, and more.
Here's what your 23andMe data can tell you about your drug response, once it's properly analyzed.
Determines how you metabolize antidepressants (paroxetine, venlafaxine, fluoxetine, amitriptyline), ADHD medications (atomoxetine), pain medications (codeine, tramadol), tamoxifen, and beta-blockers (metoprolol). About 5-10% of people are poor metabolizers — for them, codeine provides no pain relief and atomoxetine may cause excessive side effects.
Affects your response to SSRIs (sertraline, escitalopram, citalopram), clopidogrel (Plavix), and proton pump inhibitors (omeprazole). About 30% of people carry variants that meaningfully change how these drugs work.
Determines your risk of statin muscle pain. About 15-20% of people carry the variant that increases susceptibility, particularly with simvastatin and atorvastatin. If you take a statin, this is valuable to know.
Affects warfarin sensitivity. If you ever need a blood thinner, your VKORC1 status helps predict the right starting dose, potentially avoiding dangerous under- or over-anticoagulation.
Your 23andMe raw data contains the genotypes for all of these genes. The difference between knowing and not knowing is just analysis. A pharmacogenetic report translates your raw genotypes into metabolizer phenotypes (poor, intermediate, normal, rapid, ultrarapid) for each gene, then maps those phenotypes to specific medication recommendations based on CPIC and FDA guidelines.
If you have 23andMe data, there's no reason not to get a pharmacogenetic report. The data is already there and the cost is minimal. It's especially valuable if you're currently taking or about to start any medication with pharmacogenetic guidelines, if you've struggled with medication side effects or lack of efficacy, or if you want to have the information on file for any future prescribing decisions. Your pharmacogenetic profile doesn't change over time, so a one-time analysis is useful for life.
Learn how genetics may affect your response to these related medications:
23andMe's Health + Ancestry service includes a limited pharmacogenetics section covering a few drugs. However, a dedicated service like Gene2Rx extracts many more pharmacogenetic variants from your same raw data file and covers over 100 medications with detailed CPIC and FDA guideline-based recommendations.
23andMe uses a clinical-grade genotyping chip that accurately captures the common pharmacogenetic variants. While it doesn't detect every rare variant (a limitation shared with most genotyping platforms), it covers the key variants that drive the majority of clinically actionable PGx recommendations.
Yes. Your DNA doesn't change, so data from any 23andMe chip version is usable. Older chip versions may cover slightly fewer variants, but the core pharmacogenetic SNPs have been included since early versions of the 23andMe platform.
AncestryDNA raw data works the same way. Gene2Rx accepts data from 23andMe, AncestryDNA, and VCF files from whole-genome sequencing services. The process is identical: download your raw data and upload it.
Find out how your DNA may influence your response to Sertraline and other medications with a Gene2Rx pharmacogenetics report.
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