Real-Life Efficacy of Palbociclib and Ribociclib in Advanced Breast Cancer
| dc.contributor.author | Avci, T | |
| dc.contributor.author | Sahbazlar, M | |
| dc.contributor.author | Ekinci, F | |
| dc.contributor.author | Erdogan, AP | |
| dc.date.accessioned | 2025-04-10T10:29:08Z | |
| dc.date.available | 2025-04-10T10:29:08Z | |
| dc.description.abstract | Background: Clinical trials in metastatic hormone receptor-positive (HR+) human epidermal growth factor receptor-2 (HER2)-negative patients have shown that cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors both increase response rates and provide survival benefits. The efficacy of these therapies needs to be supported by real-life data. In this study, we aimed to evaluate treatment response, survival and affecting factors in patients with HR+/HER2- metastatic breast cancer (MBC) who were followed up with CDK 4/6 inhibitors in our center. Materials and methods: A retrospective analysis of 120 patients with HR+/HER2- MBC treated with ribociclib or palbociclib in combination with letrozole or fulvestrant was performed. Results: Median progression-free survival (mPFS) was 24 months in the general population, 27 months in the ribociclib arm and 20 months in the palbociclib arm, with no significant difference in progression-free survival (PFS) in both arms (p = 0.25). The mPFS was longer in the ribociclib + letrozole arm compared to palbociclib + letrozole (27 vs. 20 months, respectively). PFS was also longer in patients receiving ribociclib + fulvestrant compared to palbociclib + fulvestrant but not statistically significant (33 vs. 21 months, respectively). Median overall survival (mOS) was not reached, but 3-year overall survival (OS) was statistically significantly longer in the ribociclib arm (87% vs. 55.5%, respectively, p = 0.03). Conclusion: Palbociclib and ribociclib are first-line treatment options for metastatic HR+/HER2- disease and have similar efficacy. In our study, while the mPFS was not statistically significant in both arms, the 3-year OS rate was higher in the ribociclib arm and statistically significant. Our findings were confirmed in randomized studies comparing both agents head-to-head. | |
| dc.identifier.e-issn | 1718-7729 | |
| dc.identifier.issn | 1198-0052 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14701/35906 | |
| dc.language.iso | English | |
| dc.title | Real-Life Efficacy of Palbociclib and Ribociclib in Advanced Breast Cancer | |
| dc.type | Article |