Upon defining each cluster, the expression pattern of GJC1 was observed across various non-neuronal cell types, including T cells, oligodendrocytes, macrophages, and tumor cells, and its presence was revealed across this diverse spectrum of non-neuronal cell populations (Figures 2E,F); notably, tumor cell clusters exhibited higher levels of GJC1 expression. This evidence concerns the gene GJC1 and neoplasm.