FGFR2 and infantile convulsions and choreoathetosis: While iCCA is mainly characterised by IDH, EPHA2, and BAP1 mutations and FGFR2 fusions, extrahepatic tumours express mainly PRKACA and PRKACB fusions along with mutations in ELF3 and ARID1B [59,60] (Figure 2).