Elsevier Jul 10 2025 In a follow-up analysis to the pivotal TOPAZ-1 study, which established the combination therapy of durvalumab (an immunotherapy drug) plus gemcitabine and cisplatin (GemCis, chemotherapy drugs) as the first-line treatment for people with advanced biliary tract cancer (aBTC), researchers have shown that after three years more than twice as many study participants treated with durvalumab plus GemCis had survived compared to those treated with a placebo plus GemCis. The new