1. Real-world study of patients with HR+/ HER2- metastatic breast cancer treated with palbociclib and fulvestrant.
- Author
-
Robert N, Chen C, Doan J, Venkatasetty D, Espirito JL, and Aguilar KM
- Subjects
- Humans, Female, Aged, Retrospective Studies, Middle Aged, Adult, Neoplasm Metastasis, Progression-Free Survival, Aged, 80 and over, Breast Neoplasms drug therapy, Breast Neoplasms pathology, Breast Neoplasms mortality, Pyridines therapeutic use, Pyridines administration & dosage, Piperazines therapeutic use, Piperazines administration & dosage, Fulvestrant therapeutic use, Fulvestrant administration & dosage, Receptor, ErbB-2 metabolism, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Receptors, Estrogen metabolism, Receptors, Progesterone metabolism
- Abstract
Aims: To investigate real-world treatment patterns and outcomes among patients with hormone receptor-positive/human epidermal growth factor 2-negative (HR+/HER2-) metastatic breast cancer (mBC) who initiated first-line palbociclib-fulvestrant., Patients & Methods: Retrospective observational study of iKnowMed electronic health records among patients who initiated first-line palbociclib-fulvestrant between 1 February 2016 and 31 December 2019 and were followed through 30 June 2020. Demographic, clinical, and treatment characteristics were evaluated descriptively. Endpoints including real-world progression-free survival, overall survival, time to chemotherapy, real-world duration of therapy, and time to next treatment were assessed using Kaplan-Meier methods from first-line treatment initiation., Results: 317 patients were included (median age 67.3 years, 90.5% post-menopausal, 36.9% bone-only disease, 15.9 months median follow-up). Among those with prior adjuvant treatment ( n = 269), 66.2% ( n = 178) had disease-free intervals less than 12 months. Median real-world progression-free survival was 19.6 months (95% CI 15.2-23.6)., Conclusions: These results suggest favorable real-world clinical outcomes associated with first-line palbociclib-fulvestrant among patients with HR+/HER2- mBC. (clinical trial registration: NCT04498481).
- Published
- 2025
- Full Text
- View/download PDF