The KEYNOTE-966 Investigators, Kelley, R K, Ueno, M, Yoo, C, Finn, R S, Furuse, J, Ren, Z, Yau, T, Klümpen, H-J, Chan, S L, Ozaka, M, Verslype, C, Bouattour, M, Park, J O, Barajas, O, Pelzer, U, Valle, J W, Yu, L, Malhotra, U, Siegel, A B, Edeline, J & Vogel, A 2023, ' Pembrolizumab in combination with gemcitabine and cisplatin compared with gemcitabine and cisplatin alone for patients with advanced biliary tract cancer (KEYNOTE-966): a randomised, double-blind, placebo-controlled, phase 3 trial ', The Lancet . https://doi.org/10.1016/S0140-6736(23)00727-4 The Lancet The Lancet, 2023, 401 (10391), pp.1853-1865. ⟨10.1016/S0140-6736(23)00727-4⟩ KEYNOTE-966 Investigators 2023, ' Pembrolizumab in combination with gemcitabine and cisplatin compared with gemcitabine and cisplatin alone for patients with advanced biliary tract cancer (KEYNOTE-966) : a randomised, double-blind, placebo-controlled, phase 3 trial ', The Lancet, vol. 401, no. 10391, pp. 1853-1865 . https://doi.org/10.1016/S0140-6736(23)00727-4 The Lancet, 401(10391), 1853-1865. Elsevier Limited