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Predictors of systemic therapy sequences following a CDK 4/6 inhibitor-based regimen in post-menopausal women with hormone receptor positive, HEGFR-2 negative metastatic breast cancer.
- Source :
- Current Medical Research & Opinion; Jan2019, Vol. 35 Issue 1, p73-80, 8p
- Publication Year :
- 2019
-
Abstract
- Objective: To identify systemic treatment in the real-world following treatment with a cyclin-dependent kinase 4/6 inhibitor (CDKi) among post-menopausal women with hormone receptor positive, human epidermal growth factor receptor 2 Negative (HR+/HER2-) metastatic breast cancer (mBC).Methods: Post-menopausal women with HR+/HER2- mBC were identified from MarketScan claims databases between January 1, 2012 and October 31, 2017. Eligible mBC patients who received a CDKi-based line of therapy following metastasis diagnosis were selected. A line of therapy ended at the earlier of systemic therapy discontinuation, switch to new treatment, or censoring.Results: In total, 525 patients that received systemic therapy after a CDKi-based line were included (39.6% transitioned from use of a CDKi-based regimen in first line following metastasis diagnosis to any second line, and 60.4% shifted from a CDKi-based [second, third, or fourth line] to a subsequent line). Of post-CDKi second line regimens (nā=ā208), 38.0% were endocrine only, 35.6% were chemotherapy-based, 14.4% were everolimus-based, 9.6% were also CDKi-based line, and 2.4% were others. After adjusting for demographic and clinical characteristics, patients transitioning from a CDKi-based line to chemotherapy (vs others) had a trend of being more likely to have recurrent rapidly progressing disease, and were significantly less likely to have the prior CDKi-based line in combination with an AI (both pā<ā.05).Conclusions: This population-based study suggests that rapidly progressing disease, metastatic site location, age, and endocrine therapy partner may be predictive of subsequent systemic therapy regimen selection after progression on a CDKi-based line therapy in patients with HR+/HER2- mBC. [ABSTRACT FROM AUTHOR]
- Subjects :
- BREAST cancer
METASTATIC breast cancer
Subjects
Details
- Language :
- English
- ISSN :
- 03007995
- Volume :
- 35
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Current Medical Research & Opinion
- Publication Type :
- Academic Journal
- Accession number :
- 133694743
- Full Text :
- https://doi.org/10.1080/03007995.2018.1519500