Phase II randomized controlled trial (RCT) of medical intensive nutrition therapy (MINT) to improve chemotherapy (CT) tolerability in malnourished patients with solid tumor malignancies.
12090 Background: Malnutrition is an underrecognized predictor of inferior cancer related outcomes. Subjective global assessment (SGA), a brief validated survey for malnutrition, may predict increased CT toxicity. This phase II RCT was performed to validate SGA as a predictive tool for malnutrition and to evaluate the impact of MINT on CT associated toxicity. Methods: CT naive pts screened by SGA were assigned to well-nourished (SGA A) or malnourished (SGA B/C) cohorts. Both cohorts were followed for CT delivery, toxicity, quality of life (QOL) by FACT-G, biomarkers, radiology, and survival. SGA B/C pts, stratified by regimen/disease, were randomized 1:1 to MINT vs. usual care. The MINT cohort received weekly registered dietician counseling and symptom assessment over the 8-week study period. Percent standard and planned CT doses were calculated. Wilcoxon rank sum tests were used for differences between groups, log-rank tests for survival, and multivariable linear regression for adjusted comparisons. Results: 186 eligible pts were enrolled (94 SGA A, 92 SGA B/C). SGA A were younger (median age [range]; 63 [22, 89] vs. 70 [22, 91], p = 0.011) and more fit (ECOG 0-1; 96.8% vs. 72.8%, p < 0.001). Baseline QOL was higher for SGA A (median [range], 87 [34, 115]) vs SGA B/C (70 [31, 101], p < 0.001). SGA A was associated with higher CT delivery: median proportion of planned CT (1 [Q1 0.87, Q3 1] vs 0.94 [0.70, 1], p = 0.022) and standard CT (0.91 [0.72, 1] vs. 0.74 [0.57, 0.95] p < 0.001). Adjusted for age/ECOG, SGA A remained associated with > 80% of planned (OR 2.32, p = 0.05) and standard (OR 2.33, p = 0.04) CT. SGA B/C pts (n = 92) were randomized to MINT vs usual care: median nutrition encounters MINT 5.5 vs. usual care 0.5; we observed no differences in CT delivery: median proportion of planned CT (0.91 [0.69, 1] vs. 0.94 [0.74, 1], p = 0.84) and standard CT (0.75 [0.58, 0.96] vs 0.71 [0.52, 0.99], p = 0.59). SGA A was associated with a longer 12-month survival (77.8% [95% CI 69.6%, 86.9%]) vs. B/C (53.3% [42.8%, 66.4%], p < 0.0001; 12-month survival was similar for MINT (52.3% [38.1%, 71.9%]) vs usual care (54.4% [40.2%, 73.6%], p = 0.58). Conclusions: SGA is a validated tool to characterize malnutrition in pts receiving CT. Malnourished pts received significantly less CT, experienced worse baseline QOL, and had worse 12-month survival. Intensive medical nutrition therapy was not associated with differences in CT associated toxicity. Novel nutritional interventions are still needed to improve pt outcomes.