1. Clinical utility of circulating tumour cell-based monitoring of late-line chemotherapy for metastatic breast cancer: the randomised CirCe01 trial.
- Author
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Cabel L, Berger F, Cottu P, Loirat D, Rampanou A, Brain E, Cyrille S, Bourgeois H, Kiavue N, Deluche E, Ladoire S, Campone M, Pierga JY, and Bidard FC
- Subjects
- Aged, Breast Neoplasms blood, Breast Neoplasms drug therapy, Carcinoma, Lobular blood, Carcinoma, Lobular drug therapy, Female, Follow-Up Studies, Humans, Middle Aged, Neoplasm Invasiveness, Prognosis, Prospective Studies, Survival Rate, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Breast Neoplasms pathology, Carcinoma, Lobular secondary, Neoplastic Cells, Circulating pathology
- Abstract
Background: CirCe01 trial aimed to assess the clinical utility of circulating tumour cell (CTC)-based monitoring in metastatic breast cancer (MBC) patients beyond the third line of chemotherapy (LC)., Methods: CirCe01 was a prospective, multicentre, randomised trial (NCT01349842) that included patients with MBC after two systemic LC. Patients with ≥5 CTC/7.5 mL (CellSearch®) were randomised between the CTC-driven and the standard arm. In the CTC arm, changes in CTC count were assessed at the first cycle of each LC; patients in whom CTC levels predicted early tumour progression had to switch to a subsequent LC., Results: Greater than or equal to 5 CTC/7.5 mL were observed in N = 101/204 patients. In the CTC arm (N = 51), 43 (83%) and 18 (44%) patients completed CTC monitoring in the third and fourth lines, respectively, and 18 (42%) and 11 (61%) of these patients, respectively, had no CTC response. Thirteen (72%) and 5 (46%) of these patients underwent early switch to the next LC. Overall survival was not different between the two arms (hazard ratio = 0.95, 95% confidence interval = [0.6;1.4], p = 0.8). In subgroup analyses, patients with no CTC response who switched chemotherapy experienced longer survival than patients who did not., Conclusions: Due to the limited accrual and compliance, this trial failed to demonstrate the clinical utility of CTC monitoring., Clinical Trial Registration: NCT, NCT01349842, https://clinicaltrials.gov/ct2/show/NCT01349842 , registered 9 May 2011.
- Published
- 2021
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