A study to determine the protumour effects of IL-17 or Th17 in human nonsmall cell lung cancer (NSCLC) when subcutaneously injected into SCID mice showed transfection of IL-17 increased NSCLC growth in vivo (SCID mice) via promoting CXCR2-dependent angiogenesis. The gene discussed is CXCR2; the disease is non-small cell lung carcinoma.