Deprescribing in hospitalized patients with cancer: A clinical pharmacist-initiated multidisciplinary intervention.

Purpose: To examine the feasibility and utility of a clinical pharmacist-led multidisciplinary deprescribing intervention in hospitalized cancer patients.

Methods: We performed a retrospective cohort study among cancer patients hospitalized in oncology department who underwent a medication review by a clinical pharmacist. The pharmacist's recommendations were evaluated by a multidisciplinary team. We collected demographic and clinical information, including information on medication burden before and after intervention and number and types of deprescribing recommendations and their acceptance, and compared them among patients with different estimated life expectancies.

Results: During a 2-year study period, 392 patients evaluated by the clinical pharmacist received 2808 prescriptions (median, 7 per patient). The clinical pharmacist recommended deprescribing of 559 medications (19.9%; 95 CI, 18.4-21.4%), at least 1 medication in 321 patients (82%). The multidisciplinary team accepted 89.6% of deprescribing recommendations, resulting in a reduction of the medication burden by 501 medications (P < 0.001). 12.8% of deprescriptions addressed clinically manifested adverse drug effects in 15.1% of patients. The estimation of life expectancy by the senior oncologist was reasonably accurate, but did not affect deprescribing rate.

Conclusions: A clinical pharmacist-led deprescribing intervention within a multidisciplinary team effectively reduces medication burden and addresses adverse drug effects in cancer patients. Deprescribing interventions should be incorporated in cancer patients at any stage of the disease.