Distinctions of CNV gain/loss between GEPNEC and LNEC. (A,B) Venn plots for CNV gain (A) and CNV loss (B) of genes between GEPNEC and LNEC; (C,D) Bar plots showing quantity analysis of CNV in gene pathway CNV gain (C) and CNV loss (D). CNV, copy number variation; GEPNEC, gastroenteropancreatic neuroendocrine carcinoma; LNEC, lung NEC.