Relationship of Inflammatory Parameters and Nutritional Status in Cancer Patients

Chronic inflammation and cytokine storm can cause uncontrolled events in cancer. Pro-inflammatory molecules released by malignant cells send signals to the brain, liver, and neuroendocrine cells, interfering with appetite and promoting anorexia. Malnutrition in cancer patients is associated with increased treatment toxicity, reduced physical efficiency, and decreased survival. Therefore, early recognition of malnutrition could improve quality of life, treatment compliance, and survival. The aim of the study was to explore the relationship between inflammatory parameters with disease stage and nutritional status in patients with solid cancers.

We screened 77 consecutive patients from 3 clinical Institutions in Sicily, Italy, with solid tumors who were either in follow-up after curative treatment or being treated for metastatic disease using the Mini Nutritional Assessment (MNA) questionnaire. Inflammatory parameters, including interleukin 6 (IL6), C-reactive protein (CRP), β2-microglobulin, ferritin, and transferrin were evaluated.

A statistically significant difference was found in mean values of IL6, CRP, β2-microglobulin, ferritin, and transferrin between patients without evidence of disease and metastatic patients. Among the metastatic group, there was a significant difference in mean values of these inflammatory parameters between patients with malnutrition and those with normal nutritional status. The difference in average IL6, CRP, β2-microglobulin, and ferritin between patients at risk of malnutrition and those with normal nutritional status was also significant. However, the difference between patients at risk of malnutrition and those with malnutrition was not significant.

IL6, CRP, transferrin, ferritin, and β2-microglobulin are functional inflammatory parameters that indicate risk of malnutrition and support the MNA screening test to identify patients with solid tumors who require nutritional support.