Preferences for pharmacogenomic testing in polypharmacy patients: a discrete choice experiment

Aim: To elicit preferences for pharmacogenomic (PGx) testing in polypharmacy patients. Materials & methods: A face-to-face discrete choice experiment survey was designed and administered to adult polypharmacy patients recruited at a local retail pharmacy in Albuquerque (NM, USA). Results: A total of 128 eligible polypharmacy patients completed the discrete choice experiment survey and significantly preferred a PGx test with lower cost, better confidentiality and higher certainty of identifying best medication/dose and side effects and one that can be used to advocate for their treatment needs (all p < 0.01). Conclusion: This is the first study eliciting preferences for PGx testing among polypharmacy patients. The study found most polypharmacy patients were willing to take a PGx test and their preferences were mostly influenced by test cost. Plain language summary Patients who concurrently take five or more medications are at a higher risk of experiencing side effects related to drug-drug/drug-gene interactions. 'One size doesn't fit all' - individuals may respond differently to the same dose of a medication. Pharmacogenomic (PGx) testing identifies individual genetic information that may help explain better or worse outcomes or potential problems with drug therapies and eventually may help optimize patient treatment. The authors conducted a face-to-face survey to assess preferences for PGx testing in polypharmacy patients and found that most polypharmacy patients were willing to take a PGx test and their preferences were mostly influenced by test cost and performance, as well as the confidentiality of test results.