Costa et al. performed an analysis of longitudinal, descriptive and analytical studies of patients with gastrointestinal cancer and candidates for elective surgery and found that a PINI score over 1, Glasgow score over 2, high subjective global assessment of nutritional status (SGA), low serum albumin and high CRP have been associated with high incidences of complications (e.g., malnutrition) and a high death rate [7]. The gene discussed is CRP; the disease is nutritional deficiency disease.