Other coiled-coil or sterile alpha motif (SAM) domains containing FGFR2 fusion partners, including coiled-coil domain containing 6 (CCDC6) [62], BicC family RNA-binding protein 1 (BICC1) [63] and adenosylhomocysteinase like 1 (AHCYL) [50] are also found in iCCA patients with frequencies of 3, 6 and 11%, respectively [59]. Here, BICC1 is linked to infantile convulsions and choreoathetosis.