Pharmacogenomics: what an existing report may mean for your medicines
A responsible introduction to medicine–gene results, report quality and why interpretation still needs clinical context.
Published 2 August 2026 · Clinically reviewed 2 August 2026 · 7 min read
In brief
- Some gene variants can influence how particular medicines are processed or how likely certain effects are.
- A result is relevant only when the gene, variant, medicine and evidence align.
- A consumer DNA result may need confirmation before it can inform prescribing.
AegisRX service availability
Pharmacogenomics is coming soon to AegisRX and is not currently included in Diamond or any other medicines-review package. Please do not submit genetic results, DNA reports or raw genome files through the current patient service.
A result is not a prescribing decision
Pharmacogenomics studies how inherited genetic differences can affect the way a person responds to some medicines. For a limited and growing group of medicines, a well-validated result may help a clinician think about dose, treatment choice or additional monitoring.
It does not mean every side effect is genetic, every medicine has a useful test or that a report can choose treatment automatically. Age, kidney and liver function, other medicines, diagnosis, treatment history and personal goals still matter.
The source of the report matters
A clinical laboratory report should identify the laboratory, method, genes and variants tested, result, interpretation and relevant limitations. Direct-to-consumer raw data or a third-party interpretation can have a different evidential status.
Before a result influences prescribing, the responsible clinician may need the original report or confirmation by an appropriately accredited clinical laboratory. Missing variants are also important: a panel can only report what it actually tested.
- Keep the original report, not only a screenshot or coloured summary.
- Check the person’s identity, sample date, laboratory and test scope.
- Do not upload raw genome files to a general medicines-review service.
- Never change a medicine because an app labels it red, amber or green.
What a careful interpretation looks like
A pharmacist can map a relevant, verifiable result against the current medicines and established guidance, then explain whether it appears actionable, merely informative or not relevant to the present list.
The result should be framed as one input to a shared prescribing conversation. Where evidence is uncertain or the report cannot be verified, the responsible conclusion is to say so.