P950 Advancing Precision Nutritional Assessment in Inflammatory Bowel Disease (IBD): Adding Fecal Calprotectin in the Malnutrition Inflammation Risk Tool (MIRT) score

Most of the nutritional assessment tools assess only nutrition. The Malnutrition Inflammation Risk Tool (MIRT) incorporates both malnutrition and inflammation (CRP).1 However, CRP is a less sensitive biomarker than fecal calprotectin for the assessment of inflammation. Adding fecal calprotectin (FC) in the MIRT score may improve the assessment of malnutrition risk. FC level cutoff of < 250 mg/kg in adults correlate with endoscopic remission with good sensitivity and specificity.2 Fecal calprotectin level greater than 800 µg/g is predictive of a need for rescue therapy.3 To study if adding fecal calprotectin to CRP by improves the yield of MIRT score This is a single center, prospective, cohort study including consecutive patients with IBD (Ulcerative colitis {UC} and Crohn’s disease {CD}). Malnutrition was defined as per European society for clinical nutrition and metabolism (ESPEN guidelines): BMI <18.5 kg/m2 or unintentional weight loss >10% (indefinite time). MIRT score was calculated with BMI, weight loss and CRP and MIRT-FC by adding FC to CRP with as shown in the table below: During 2019 to 2021, 200 patients included, median age 39 years (IQR 28-53) (105 UC, 93 CD and 2 IBD-U), 60 (30%) patients had malnutrition (32 UC, 26 CD and 2 IBD-U and 27 (45%) malnourished IBD patients had MIRT score > 3. CRP values were normal in 30 (50%). Adding fecal calprotectin to MIRT score malnourished IBD patients, 46 (76%) malnourished IBD patients had MIRT score > 3 (P=0.005). This modification (MIRT FC) increased the yield of existing MIRT score by 31%. MIRT-FC score improved the yield of MIRT score. Prospective studies are required to validate this further. References: 1. Jansen I, Prager M, Valentini L, Büning C. Inflammation-driven malnutrition: a new screening tool predicts outcome in Crohn’s disease. British Journal of Nutrition. Cambridge University Press; 2016;116(6):1061–7. 2. D'Haens G, Ferrante M, Vermeire S, et al. Fecal calprotectin is a surrogate marker for endoscopic lesions in inflammatory bowel disease. Inflamm Bowel Dis 2012; 18:2218-2224. 3. Sasidharan S, Sasson AN, Shannon KM, Ananthakrishnan AN. Fecal Calprotectin Is a Predictor of Need for Rescue Therapy in Hospitalized Severe Colitis. Inflamm Bowel Dis. 2022;28(12):1833-1837.