Among patients with NSCLC, there were negative correlations between mean CRP and change in weight (Rs −0.549; P<0.05), body fat (Rs −0.543; P<0.05) and MAMC (Rs −0.577; P<0.05), but no relationship with change in FFM (P=0.799). The gene discussed is CRP; the disease is non-small cell lung carcinoma.