262MO Preliminary efficacy outcomes of ivosidenib in patients with IDH1-mutated cholangiocarcinoma (mIDH1 CCA): Initial results from the phase IIIb ProvIDHe study. - Bridgewater, J.A.; Gardini, A. Casadei; Wilmink, H.; Mercade, T. Macarulla; Sim, H-W.; Verslype, C.; Roderburg, C.; Touchefeu, Y.; McDermott, R.S.; Kordes, M.; Lee, C-K.; Vogel, A.; et al. (Annals of Oncology, 2025)