CNS embryonal tumors with PLAGL amplification (ET, PLAGL) are a recently described tumor type marked by amplification of one of the PLAG family genes, PLAGL1 or PLAGL2. Separately, a supratentorial, ependymoma-like CNS tumor type with PLAG family alteration, namely PLAGL1 fusion, was also reported (NET_PLAGL1). Here, PLAGL1 is linked to ependymoma.