According to the univariable analysis, significantly higher risk of malnutrition was observed in patients with stage 3 disease according to the ISS classification (OR = 4.23; p = 0.0089), poor performance status (PS:2–4) (OR = 188.42; p = 0.0003), lower levels of albumin (OR = 5.14; p = 0.0040), and elevated CRP (OR = 2.98; p = 0.0368). Here, CRP is linked to malnutrition.