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Secondary analyses of the randomized phase III Stop&Go study: efficacy of second-line intermittent versus continuous chemotherapy in HER2-negative advanced breast cancer.
- Source :
- Acta Oncologica; Jun2020, Vol. 59 Issue 6, p713-722, 10p, 1 Diagram, 4 Charts, 1 Graph
- Publication Year :
- 2020
-
Abstract
- Background: Previously, we showed that reintroduction of the same (first-line) chemotherapy at progression could only partially make up for the loss in efficacy as compared to continuously delivered first-line chemotherapy. Here, we report the probability of starting second-line study chemotherapy in the Stop&Go trial, and the progression-free survival (PFS) and overall survival (OS) of patients who received both the first- and second-line treatment in an intermittent versus continuous schedule. Methods: First-line chemotherapy comprised paclitaxel plus bevacizumab, second-line capecitabine or non-pegylated liposomal doxorubicin, given per treatment line as two times four cycles (intermittent) or as eight consecutive cycles (continuous). Results: Of the 420 patients who started first-line treatment within the Stop&Go trial (210:210), a total of 270 patients continued on second-line study treatment (64% of all), which consisted of capecitabine in 201 patients and of non-pegylated liposomal doxorubicin in 69 patients, evenly distributed between the treatment arms. Median PFS was 3.7 versus 5.0 months (HR 1.07; 95% CI: 0.82–1.38) and median OS 10.9 versus 12.4 months (HR 1.27; 95% CI: 0.98–1.66) for intermittent versus continuous second-line chemotherapy. Second-line PFS was positively influenced by prior hormonal therapy for metastatic disease and longer first-line PFS duration, while triple-negative tumor status had a negative influence. Patients with a shorter time to progression (TTP) in first-line (≤10 months) had a higher probability of starting second-line treatment if they received intermittent compared to continuous chemotherapy (OR 1.97; 95% CI: 1.02–3.80). Conclusion: We recommend continuous scheduling of both the first- and second-line chemotherapy for advanced breast cancer. [ABSTRACT FROM AUTHOR]
- Subjects :
- BREAST cancer prognosis
ANTIMETABOLITES
BREAST tumors
CANCER chemotherapy
CELL receptors
CONFIDENCE intervals
CONFERENCES & conventions
DOXORUBICIN
DRUG administration
HORMONES
PACLITAXEL
PROBABILITY theory
SURVIVAL
THERAPEUTICS
TUMOR classification
TREATMENT effectiveness
BEVACIZUMAB
DISEASE progression
ODDS ratio
Subjects
Details
- Language :
- English
- ISSN :
- 0284186X
- Volume :
- 59
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Acta Oncologica
- Publication Type :
- Academic Journal
- Accession number :
- 143138732
- Full Text :
- https://doi.org/10.1080/0284186X.2020.1731923