RecruitingPhase 1Drug trialEmavusertib (CA-4948) in Combination With Cisplatin, Gemcitabine, and Durvalumab in Patients With Untreated Advanced or Metastatic Biliary Tract CancerBased on preclinical data from the Lim lab (WUSM), the investigators hypothesize that IRAK4 inhibition cripples tumor-intrinsic survival signaling and effectively overcomes the desmoplastic and immune-suppressive tumor microenvironment (TME) to render chemo- and immunotherapies effective in GI malignancy. Therefore, this trial is designed to evaluate the combination of emavusertib (CA-4948) and standard chemoimmunotherapy in untreated advanced or metastatic biliary tract cancer (BTC).