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Authors
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Jiang Z, Ouyang Q, Sun T, Zhang Q, Teng Y, Cui J, Wang H, Yin Y, Wang X, Zhou X, Wang Y, Sun G, Wang J, Zhang L, Yang J, Qian J, Yan M, Liu X, Yi T, Cheng Y, Li M, Zang A, Wang S, Wang C, Wu X, Cheng J, Li H, Lin Y, Geng C, Gu K, Xie C, Xiong H, Wu X, Yang J, Li Q, Chen Y, Li F, Zhang A, Zhang Y, Wu Y, Nie J, Liu Q, Wang K, Mo X, Chen L, Pan Y, Fu P, Zhang H, Pang D, Sheng Y, Han Y, Wang H, Cang S, Luo X, Yu W, Deng R, Yang C, Keegan P
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Abstract Text
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The combination of immune-checkpoint blockade with chemotherapy for the first-line treatment of advanced triple-negative breast cancer (TNBC) has generated mixed results. TORCHLIGHT is a randomized, double-blinded phase 3 trial evaluating the efficacy and safety of first-line toripalimab and nab-paclitaxel (nab-P) (n = 353; experimental arm) versus placebo and nab-P (n = 178; control arm) for the treatment of women with metastatic or recurrent TNBC. The primary end point was progression-free survival (PFS) assessed by a blinded independent central review in the PD-L1-positive and intention-to-treat populations. The secondary end points included overall survival and safety. Overall, 200 and 100 patients, in the toripalimab and placebo arm respectively had PD-L1-positive TNBC. At the prespecified interim analysis, a statistically significant improvement in PFS assessed by a blinded independent central review was demonstrated in the experimental arm in the PD-L1-positive population (median PFS 8.4 versus 5.6 months; hazard ratio (HR) = 0.65, 95% confidence interval (CI) 0.470-0.906, P = 0.0102). The median overall survival was 32.8 versus 19.5 months (HR = 0.62, 95% CI 0.414-0.914, P = 0.0148). Similar incidences of treatment-emergent adverse events (AEs) (99.2% versus 98.9%), grade ≥3 treatment-emergent AEs (56.4% versus 54.3%) and fatal AEs (0.6% versus 3.4%) occurred in the experimental and control arms. The addition of toripalimab to nab-P provided a significant improvement in PFS for PD-L1-positive patients with metastatic or recurrent TNBC with an acceptable safety profile. ClinicalTrial.gov identifier NCT03777579 .
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