Nutritional Impact of Serum-Derived Bovine Immunoglobulin Protein Isolate in Subjects With IPAA

Overview

This is an open label trial to test the hypothesize that serum bovine immunoglobulin protein isolate (SBI) will improve the nutritional status and quality of life (QOL) of patients with an ileal pouch anal anastomosis (IPAA) and symptoms of pouchitis. Subjects with symptomatic IPAA will receive two packets of EnteraGam twice daily (total daily dose of 20 g SBI) for up to 24 weeks. The primary objective of this study is to determine whether SBI therapy leads to improved nutritional status and QOL. A secondary objective is to evaluate SBI in the management of their disease, including impact on clinical symptoms.

This is an open-label study involving patients who are status post ileal pouch-anal anastomosis age 18 and 75 who receive care at Boston Medical Center's Center for Digestive Disorders (CDD). There is no randomization or use of placebo in this study and patients will be recruited sequentially. This is an open-label, single center study evaluating the effectiveness of SBI or EnteraGam (10.0 g twice per day) on nutritional status and quality of life in patients with ileal pouch-anal anastomosis. Nutritional status and inflammation be assessed by measuring CBC with differential, vitamin D, vitamin B12, pre-albumin, albumin, ferritin, ESR, CRP, alpha-1-antitrypsin, and fecal calprotectin levels at screening, Day 84, and Day 168. Stool samples from these same time points will also be frozen and stored until the end of the study for potential fecal microbiome analysis depending on the results of other outcome measures. The effect of SBI on a subject's quality of life (QoL) will be evaluated using the Short Inflammatory Bowel Disease Questionnaire and Cleveland Global Quality of Life scores at baseline, Day 28, Day 84, and End of Study. The short form of disease specific QoL (s-IBDQ) includes 10 questions derived from the 32 questions IBDQ concerning QoL. It covers four items: bowel symptoms, systemic symptoms, emotional, and social functions. The total score ranges from 10 (worst health) to 70 (best health). The Cleveland Global Quality of Life (CGOL) score is an instrument specifically designed for patients with ileal pouches. Subjects will be asked to rate each of three items (current QOL, current quality of health, and current energy level) on a scale of 0-10, 0 being the worst and 10 the best. The sum of the three scores divided by 30 will provide the CGQL score. The Modified Pouchitis Disease Activity Index (mPDAI) will be used to evaluate for pouchitis and assess the overall disease activity for each subject at baseline pouchoscopy. This modified diagnostic instrument consists of two component scores: clinical symptoms (range 0-6 points) and endoscopic appearence (range 0-6 points). Follow-up pouchoscopy is not part of the study protocol. However, if a patient warrants follow-up pouchoscopy at any point during the study period based on standard of care (most likley due to worsening or non-responsive symptoms), then the mPDAI at follow-up pouchoscopy will also be calculated and included in outcomes analysis.