A Medline/PubMed search using MeSH terms “primary central nervous system neoplasm,” AND “T-cell lymphoma,” OR “anaplastic large cell lymphoma,” OR “CD30 + lymphoma” (past 10 years, English) identified two recent reviews: one on 34 cases of PCNS ALCL ALK + [2] and another from 2023 on radiological and histopathological findings in 17 cases [1]. The gene discussed is ALK; the disease is T-cell non-Hodgkin lymphoma.