The analysis showed significantly higher CD4+ lymphocyte infiltrates in ATC compared to NEC (CD4+ hotspot score: 1,277 ± 297 cells/mm2 vs. 387 ± 143 cells/mm2, p = 0.0097; CD4+ average score: 510 ± 111 vs.141 ± 55, p = 0.0046). The gene discussed is CD4; the disease is neuroendocrine carcinoma.