The sialoblastoma from Patient 5 did not have an FGFR2 variant and instead showed a CTNNB1 missense hotspot variant (CTNNB1 p.I35T); the concurrent hepatoblastoma in this patient had a distinct CTNNB1 hotspot variant (CTNNB1 p.S45P). This evidence concerns the gene CTNNB1 and hepatoblastoma.