"Having cancer is very expensive": A qualitative study of patients with ovarian cancer and PARP inhibitor treatment

Abstract

Objective: To examine patient barriers and facilitators to PARP inhibitor (PARP-I) maintenance therapy in ovarian cancer. PARP-I improves survival in ovarian cancer, but these multi-year therapies cost around $100,000 annually and are under-prescribed.

Methods: We recruited patients with ovarian cancer treated with PARP-I maintenance therapy at an academic health system for a semi-structured interview. Patient demographics, including genetics and PARP-I cost, were self-reported. We assessed patient experiences with barriers and facilitators of PARP-I usage. Two team members used a thematic approach to analyze and identify key themes.

Results: In May 2022, we interviewed 10 patients (mean age = 65 years; 80% White; 60% with a germline genetic mutation). Patients paid on average $227.50 monthly for PARP-I, straining resources for some participants. While sampled patients were insured, all patients identified having no or inadequate insurance as a major barrier to PARP-I. At the same time, all participants prioritized clinical effectiveness over costs of care. Patients identified PARP-I delivery from specialty pharmacies, separate and different from other medications, as a potential barrier, but each had been able to navigate delivery. Patients expressed significant initial side effects of PARP-I as a potential barrier yet reported clinician communication and prompt dose reduction as facilitating continuation.

Conclusions: Patients identified cost, restrictive pharmacy benefits, and initial side effects as barriers to PARP-I usage. Having insurance and a supportive care team were identified as facilitators. Enhancing communication about PARP-I cost and side effects could improve patient experience and receipt of evidence-based maintenance therapy in ovarian cancer.

Keywords: Communication; Cost; Ovarian cancer; PARP inhibitor; Qualitative study; Side effects.