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The impact of patient sex on the presentation of inflammatory bowel disease (IBD) has been poorly evaluated. Our aims were to assess potential disparities in IBD phenotype and progression between sexes. We performed an observational multicenter study that included patients with Crohn's disease (CD) or ulcerative colitis from the Spanish Estudio Nacional en Enfermedad Inflamatoria intestinal sobre Determinantes genéticos y Ambientales registry. Data extraction was conducted in July 2021. A total of 51,595 patients with IBD were included, 52% were males and 25,947 had CD. The median follow-up period after diagnosis was 9 years in males and 10 years in females. In CD, female sex was an independent risk factor for medium disease onset (age, 17–40 y) (relative risk ratio, 1.45; 95% CI, 1.31–1.62), later disease onset (age, >40 y) (relative risk ratio, 1.55; 95% CI, 1.38–1.73), exclusive colonic involvement (odds ratio, 1.24; 95% CI, 1.14–1.34), inflammatory behavior (odds ratio, 1.14; 95% CI, 1.07–1.21), and extraintestinal manifestations (odds ratio, 1.48; 95% CI, 1.38–1.59). However, female sex was a protective factor for upper gastrointestinal involvement (odds ratio, 0.84; 95% CI, 0.79–0.90), penetrating behavior (odds ratio, 0.76; 95% CI, 0.70–0.82), perianal disease (odds ratio, 0.77; 95% CI, 0.71–0.82), and complications (odds ratio, 0.73; 95% CI, 0.66–0.80). In ulcerative colitis, female sex was an independent risk factor for extraintestinal manifestations (odds ratio, 1.48; 95% CI, 1.26–1.61). However, female sex was an independent protective factor for disease onset from age 40 onward (relative risk ratio, 0.76; 95% CI, 0.66–0.87), left-sided colonic involvement (relative risk ratio, 0.72; 95% CI, 0.67–0.78), extensive colonic involvement (relative risk ratio, 0.59; 95% CI, 0.55–0.64), and abdominal surgery (odds ratio, 0.78; 95% CI, 0.69–0.88). There is sexual dimorphism in IBD. The patient's sex should be taken into account in the clinical management of the disease. [Display omitted] [ABSTRACT FROM AUTHOR]

Introduction Intra-abdominal abscesses complicating Crohn's disease [CD] are a challenging situation. Their management, during hospitalisation and after resolution, is still unclear. Methods Adult patients with CD complicated with intra-abdominal abscess. who required hospitalisation, were included from the prospectively maintained ENEIDA registry from GETECCU. Initial strategy effectiveness and safety to resolve abscess was assessed. Survival analysis was performed to evaluate recurrence risk. Predictive factors associated with resolution were evaluated by multivariate regression and predictive factors associated with recurrence were assessed by Cox regression. Results In all, 520 patients from 37 Spanish hospitals were included; 322 [63%] were initially treated with antibiotics alone, 128 [26%] with percutaneous drainage, and 54 [17%] with surgical drainage. The size of the abscess was critical to the effectiveness of each treatment. In abscesses < 30 mm, the antibiotic was as effective as percutaneous or surgical drainage. However, in larger abscesses, percutaneous or surgical drainage was superior. In abscesses > 50 mm, surgery was superior to percutaneous drainage, although it was associated with a higher complication rate. After abscess resolution, luminal resection was associated with a lower 1-year abscess recurrence risk [HR 0.43, 95% CI 0.24-0.76]. However, those patients who initiated anti-TNF therapy had a similar recurrence risk whether luminal resection had been performed. Conclusions Small abscesses [<30mm] can be managed with antibiotics alone; larger ones require drainage. Percutaneous drainage will be effective and safer than surgery in many cases. After discharge, anti-TNF therapy reduces abscess recurrence risk in a similar way to bowel resection. [ABSTRACT FROM AUTHOR]

Background: HLADQA1*05 is recently associated with heightened immunogenicity to anti-TNF. Our aims were to determine whether HLADQ1*05 is a risk factor for primary non-response, loss of response (LOR) or adverse events (AE) to first-line anti-TNFα in patients with inflammatory bowel disease., Methods: We performed a retrospective observational study enrolling biologic naïve patients with Crohn´s disease and ulcerative colitis who initiated adalimumab or infliximab from 2000 to 2021. HLA-DQA1 genotype was determined in all patients and immunogenicity in 98 patients., Results: We enrolled 408 patients who started first-line infliximab (n=211) and adalimumab (n=197), with a mean follow-up of 7.6 years. Primary response at week 24 occurred in 347 (85.0%), LOR in 133 (38.3%) and AE in 93 (22.8%). The HLADQA1*05 was identified in 185 (43.3%) patients. In multivariate analyses, no risk factors were identified for primary response. HLADQA1*05 was an independent risk factor for LOR (aHR=1.80, 95%CI=1.21-2.67) and immunogenicity (aOR=3.44, 95% CI=1.12-11.92). HLADQA1*03 was a protective factor against LOR (aHR=0.42, 95%CI=0.20-0.88). Stratified analysis by anti-TNF type showed that HLADQA1*05 increased the risk of LOR to infliximab but not to adalimumab and HLADQA1*03 decreased the risk of LOR to adalimumab but not to infliximab. Female sex, infliximab and the co-presentation of at least one allele of the HLADQA1*03 and HLADQA1*05 were risk factors for AE., Conclusions: HLADQA1*05 is associated with a higher risk of LOR and immunogenicity, particularly to infliximab. HLADQA1*03 seems to play a protective role against LOR, particularly to adalimumab. Female sex and infliximab are risk factors for AE., (© The Author(s) 2024. Published by Oxford University Press on behalf of European Crohn’s and Colitis Organisation. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)

Background: The coexistence of human immunodeficiency virus (HIV) infection and inflammatory bowel disease (IBD) is uncommon. Data on the impact of HIV on IBD course and its management is scarce., Aim: To describe the IBD phenotype, therapeutic requirements and prevalence of opportunistic infections (OI) in IBD patients with a coexistent HIV infection., Methods: Case-control, retrospective study including all HIV positive patients diagnosed with IBD in the ENEIDA registry. Patients with positive HIV serology (HIV-IBD) were compared to controls (HIV seronegative), matched 1:3 by year of IBD diagnosis, age, gender and type of IBD., Results: A total of 364 patients (91 HIV-IBD and 273 IBD controls) were included. In the whole cohort, 58% had ulcerative colitis (UC), 35% had Crohn's disease (CD) and 7% were IBD unclassified. The HIV-IBD group presented a significantly higher proportion of proctitis in UC and colonic location in CD but fewer extraintestinal manifestations than controls. Regarding treatments, non-biological therapies (37.4% vs. 57.9%; P=0.001) and biologicals (26.4% vs. 42.1%; P=0.007), were used less frequently among patients in the HIV-IBD group. Conversely, HIV-IBD patients developed more OI than controls regardless of non-biological therapies use. In the multivariate analysis, HIV infection (OR 4.765, 95%CI 2.48-9.14; P<0.001) and having ≥1 comorbidity (OR 2.445, 95%CI 1.23-4.85; P=0.010) were risk factors for developing OI, while CD was protective (OR 0.372, 95%CI 0.18-0.78;P=0.009)., Conclusions: HIV infection appears to be associated with a less aggressive phenotype of IBD and a lesser use of non-biological therapies and biologicals but entails a greater risk of developing OI., (Copyright © 2024 by The American College of Gastroenterology.)

Introduction: Intra-abdominal abscesses complicating Crohn's disease [CD] are a challenging situation. Their management, during hospitalisation and after resolution, is still unclear., Methods: Adult patients with CD complicated with intra-abdominal abscess. who required hospitalisation, were included from the prospectively maintained ENEIDA registry from GETECCU. Initial strategy effectiveness and safety to resolve abscess was assessed. Survival analysis was performed to evaluate recurrence risk. Predictive factors associated with resolution were evaluated by multivariate regression and predictive factors associated with recurrence were assessed by Cox regression., Results: In all, 520 patients from 37 Spanish hospitals were included; 322 [63%] were initially treated with antibiotics alone, 128 [26%] with percutaneous drainage, and 54 [17%] with surgical drainage. The size of the abscess was critical to the effectiveness of each treatment. In abscesses < 30 mm, the antibiotic was as effective as percutaneous or surgical drainage. However, in larger abscesses, percutaneous or surgical drainage was superior. In abscesses > 50 mm, surgery was superior to percutaneous drainage, although it was associated with a higher complication rate. After abscess resolution, luminal resection was associated with a lower 1-year abscess recurrence risk [HR 0.43, 95% CI 0.24-0.76]. However, those patients who initiated anti-TNF therapy had a similar recurrence risk whether luminal resection had been performed., Conclusions: Small abscesses [<30mm] can be managed with antibiotics alone; larger ones require drainage. Percutaneous drainage will be effective and safer than surgery in many cases. After discharge, anti-TNF therapy reduces abscess recurrence risk in a similar way to bowel resection., (© The Author(s) 2023. Published by Oxford University Press on behalf of European Crohn’s and Colitis Organisation. All rights reserved. For permissions, please email: journals.permissions@oup.com.)