Research Letter

Specialty Oral Anticancer Prescription Fill Rates After Medicare Part D Cost-Sharing Changes in 2024

JAMA 10.1001/jama.2025.22134

December 29, 2025 at 11:00 AM EST

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This study uses data from the Symphony Health Solutions Integrated Dataverse to determine whether provisions from the Inflation Reduction Act of 2022 were associated with prescription fill changes from January 1, 2023, to December 31, 2024, among Medicare Part D beneficiaries who did not receive low-income subsidies.

Corresponding Author: John K. Lin, MD, MSHP, Department of Health Services Research, MD Anderson Cancer Center, 6900 Fannin St, Ninth Floor, Houston, TX 77030 (jlin11@mdanderson.org).

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