P667 Characterization of a large Hispanic cohort with Inflammatory Bowel Disease across a 25-year span

Torres, E.A.(1);Ramos, L.(1);Sanchez, A.(1);Amaya, C.(2);Perez-Gilbe, A.(3);

(1)University of Puerto Rico School of Medicine, Medicine, San Juan, Puerto Rico;(2)University of Puerto Rico Graduate School of Public Health, Epidemiology and Biostatistics, San Juan, Puerto Rico;(3)AbbVie Corp, Medical Affairs, San Juan, Puerto Rico


Inflammatory Bowel Disease (IBD) in Hispanics has increased, but characterization of this population is limited. We describe the demographic and clinical characteristics of a large Hispanic population with IBD and compare it among two periods, 1995- 2009 and 2010-2019.


The Registry of IBD has been recruiting patients with IBD continuously since 1995. Data is obtained from the subject and the medical record. This study includes 1365 Hispanics recruited between 1995 and 2019. Variables include age, gender, age at onset and diagnosis, IBD type, family history, smoking, extraintestinal manifestations (EIM), medications, and surgery for IBD. Descriptive statistics included frequency, median, mean, and standard deviation. SPSS software was used for comparison analysis utilizing Chi square and Fisher´s test. The protocol is approved by the IRB.


712 were males and 653 females. Crohn’s disease (CD) was more prevalent in males (479/836, 57.3%) and ulcerative colitis (UC) in females (288/517, 55.7%). The mean age at diagnosis was 34.1 + 15.4 for UC and 24.4 + 12 for CD (p<.001). History of smoking was infrequent (24.3%). Interval between onset of symptoms and diagnosis was 1.8+ 4.7 yrs. for UC and 2.5 + 5.3 yrs. for CD (p=.012). At recruitment, duration of disease was 7.4+ 8.4 yrs. for UC and 5.6 + 7.3 yrs. for CD (p<.001). Family history of IBD was present in 23% of CD and UC participants. The most frequent EIM was arthropathy in 37.9% and 25.9 % of UC and CD (p=.670), followed by skin manifestations in 13.2% and 18.9% respectively (p=.070). Aminosalicylates (94.9%) and corticosteroids (81.6%) were more frequent in UC, and immunomodulators (23%) and anti-TNF drugs (aTNF) (46.2%) in CD (p<.001). At the time of recruitment, 54.5% of CD and 23.7% of UC patients had previous surgery for IBD.

            Stratification of subjects into two groups by date of recruitment,1995-2009 and 2010-2019, showed similar ages at onset and diagnosis, but the time to diagnosis decreased for UC (2 vs 1.55 yrs.) and increased for CD (2.2 vs 2.6 yrs.) in the later interval. Medications varied between decades, with aTNF increasing markedly in CD and UC (p<.001) and aminosalicylates decreasing in CD (p<.001) in the later years. Surgery for UC decreased from 25.2% to 20.7%, whereas surgery for CD remained the same (52.2% vs 52.5%).


We describe a large cohort of Hispanics with IBD studied over two decades. Differences over time may reflect changes in disease phenotypes, environmental influences and the impact of physician awareness and new management guidelines and therapies. Further studies are needed to better characterize this population and explore outcomes.