Results:
nausea, diarrhea, fatigue, encephalopathy, dysgeusia, weight loss, anorexia
HYPOPHOSPHATEMIA, ADVERSE EVENTS, ENCEPHALOPATHY, SYNDROME, HYPERTENSION, ANOREXIA
Forty-five patients were enrolled. A total of 40 patients were treated at the RP2D of pembrolizumab 200 mg i.v. every 3 weeks and cabozantinib 60 mg orally once daily, 38 of which were evaluable for response. The ORR was 65.8% [95% confidence interval (CI), 49.9–78.8] for all evaluable patients [78.6% as first-line therapy, 58.3% as second-line therapy]. The DCR was 97.4% (95% CI, 86.5–99.9). Median DoR was 8.3 months (interquartile range, 4.6–15.1). At a median follow-up of 23.54 months, the median PFS was 10.45 months (95% CI, 6.25–14.63) and median OS was 30.81 months (95% CI, 24.2–not reached). The most common grade 1 and/or 2 treatment-related adverse events (TRAE) were diarrhea, anorexia, dysgeusia, weight loss, and nausea. The most common grade 3 and/or 4 TRAEs were hypertension, hypophosphatemia, alanine transaminase elevation, diarrhea, and fatigue. There was one grade 5 TRAE of reversible posterior encephalopathy syndrome related to cabozantinib.