In some tumors (e.g., GBM, NSCLC), the percentage of NKG2A+ Vδ2 T cells can exceed that of those circulating in the blood, although it is not clear whether this higher expression level is induced by the TME or whether it is due to the preferable infiltration of this subset to the tumor side. The gene discussed is KLRC1; the disease is non-small cell lung carcinoma.