Peer-Reviewed Publication
Psychiatry Res2026;365117339.November 1, 2026Journal Article

Medication adherence following pharmacogenomic testing in patients with major depressive disorder.

Andria Del Tredici1, Holly L Johnson1, W Brady DeHart2, Alexander Gutin1, Katherine Johansen Taber1, Pamela Morin2, Laura Becker2, Devika Chawla3, Andrew A Nierenberg4
1Myriad Genetics Inc, Salt Lake City, UT, USA.
2Optum, Eden Prairie, MN, USA.
3Myriad Genetics Inc, Salt Lake City, UT, USA. Electronic address: Devika.chawla@myriad.com.
4Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.

Abstract

OBJECTIVE: Approximately 50% of patients with major depressive disorder (MDD) prematurely discontinue their antidepressant medication within 6 months, increasing risk of relapse. Pharmacogenomic (PGx) testing may improve medication adherence by informing treatment based on gene-drug interactions (GDI). Here, we evaluated whether PGx informed treatmentimproved medication adherence in MDD patients.…

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