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Metaplastic breast cancer (MpBC) is a rare invasive primary breast malignant tumor, accounting for about 0.
Breast cancer
This article reports the S1609 cohort study on this rare tumor: the outcome of advanced MpBC treatment with ipilimumab + nivolumab
The study is a prospective, open-label, multicenter Phase 2 (two-phase) clinical trial.
The biggest change in the tumor
The biggest change in the tumorOverall, a total of 17 evaluable patients were recruited, with a median age of 60 years (range 26-85); the median number of previous treatments was two (range 0-5)
The median PFS and OS were 2 months and 12 months, respectively
Overall survival rate and progression-free survival rate
Overall survival rate and progression-free survival rateEleven (65%) patients experienced side effects (AE), including one grade 5 AE
immunity
In summary, no new safety issues occurred in patients with MpBC refractory to advanced chemotherapy when combined with ipilimumab and nivolumab, and an objective response rate of 18% as the primary endpoint was achieved
There are no new safety issues when combined treatment with ipilimumab and nivolumab in advanced chemotherapy-refractory MpBC patients, and an objective response rate of 18% as the primary endpoint is achieved .
Original source:
Adams Sylvia, Othus Megan, Patel Sandip Pravin et al.
Multicenter Phase II Trial of Ipilimumab and Nivolumab in Unresectable or Metastatic Metaplastic Breast Cancer: Cohort 36 of Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors (DART, SWOG S1609
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