Publications by authors named "Filip Baert"

Background And Aims: Inflammatory bowel disease (IBD) is associated with a higher risk of developing colorectal cancer, according to the inflammation-dysplasia-cancer (IDC) sequence from inflammation to colitis-associated colorectal cancer (CAC). The objective of this study was to identify and generate a transcriptomic signature and score, related to the IDC sequence, that could ultimately classify dysplasia and cancer in IBD.

Methods: Demographics, clinical parameters, histological characteristics, and RNA-sequencing data were evaluated on 134 formalin-fixed paraffin-embedded lesions from 2 independent cohorts of IBD patients with low- or high-grade dysplasia (LGD, HGD) and/or CAC.

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Background & Aims: Retrograde cricopharyngeal dysfunction (R-CPD) or inability to belch has been linked to ineffective relaxation of the upper esophageal sphincter (UES) during gastroesophageal gas reflux, and botulinum toxin (BT) injection into the UES has demonstrated success in case series. However, the diagnosis is often overlooked. High resolution impedance manometry (HRiM) with belch provocation was recently suggested as diagnostic tool.

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Background: Fatigue is common among patients with inflammatory bowel diseases (IBDs) and is associated with decreased quality of life (QoL).

Aims: Describe fatigue evolution and identify factors associated with fatigue outcomes in patients with ulcerative colitis (UC) or Crohn's disease (CD) initiating biologic treatment.

Methods: Data from adult Belgian patients with UC or CD enrolled in a prospective real-world study were utilized.

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Objective: Uniform and standardised quality measurement allows care assessment and improvement. Following a pragmatic consensus method we aimed to agree on a selection of measurable quality indicators that can be used to assess, benchmark and gradually improve inflammatory bowel disease (IBD) care in Flanders.

Methods: Of 49 structures, 135 processes and 37 outcome indicators identified through literature, 58 were preselected and reformulated into measurable outcome indicators by four IBD physicians.

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Article Synopsis
  • - Etrasimod is a daily oral medication aimed at treating moderately to severely active ulcerative colitis, and this study compares its effectiveness against placebo in patients with prior biological or Janus kinase inhibitor treatment.
  • - The analysis showed that both biologic/JAK inhibitor naïve and experienced patients who took etrasimod had significantly higher rates of clinical remission compared to those taking placebo, particularly highlighted in weeks 12 and 52 of the treatment.
  • - Overall, both groups of patients benefited from etrasimod in terms of treatment response, indicating its potential as an effective option for managing ulcerative colitis symptoms.
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Background & Aims: Rigorous donor preselection on microbiota level, strict anaerobic processing, and repeated fecal microbiota transplantation (FMT) administration were hypothesized to improve FMT induction of remission in ulcerative colitis (UC).

Methods: The RESTORE-UC trial was a multi-centric, double-blind, sham-controlled, randomized trial. Patients with moderate to severe UC (defined by total Mayo 4-10) were randomly allocated to receive 4 anaerobic-prepared allogenic or autologous donor FMTs.

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Background/aims: Retrograde cricopharyngeus dysfunction (R-CPD) is a new clinical entity characterized by inability to belch and associated symptoms of loud gurgling noises, chest and/or abdominal pressure, abdominal bloating, and excessive flatulence. R-CPD can be treated with botulinum toxin (BT) injection in the upper esophageal sphincter. We hereby report patient demographics, symptomatology, and treatment results of a series of consecutive patients who presented at our center.

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Background: Vedolizumab is an anti-α4β7 integrin antibody used to treat moderate to severe ulcerative colitis (UC) and Crohn's disease (CD). This post hoc analysis of patient-reported outcomes (PROs) from the VISIBLE 1 (NCT02611830) and 2 (NCT02611817) phase 3 studies evaluated onset of treatment effect on patient-reported symptoms during 6-week vedolizumab induction.

Methods: Patient-reported stool frequency (SF) and rectal bleeding (RB) (UC Mayo score), and SF and abdominal pain (AP) in CD were collected via electronic diary from VISIBLE patients receiving one or more open-label intravenous (IV) vedolizumab induction doses (weeks 0 and 2).

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Article Synopsis
  • The study aimed to evaluate the effectiveness of early medical prophylaxis versus waiting for endoscopy findings in preventing postoperative recurrence (POR) in patients with Crohn's disease after ileocaecal resection (ICR).
  • Out of 346 patients, those receiving early prophylactic treatment (Cohort 1) had significantly lower endoscopic recurrence rates compared to those who only received treatment based on endoscopy results (Cohort 2).
  • While both groups did not show significant differences in severe endoscopic POR or time to surgical recurrence, the proactive group had a lower treatment burden when using immunomodulators.
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Background: Heterogeneity in demographic and outcomes data with corresponding measurement instruments [MIs] creates barriers to data pooling and analysis. Several core outcome sets have been developed in inflammatory bowel disease [IBD] to homogenize outcomes data. A parallel Minimum Data Set [MDS] for baseline characteristics is lacking.

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Background And Aims: We explored the potential for differential efficacy of vedolizumab between early and late ulcerative colitis [UC] with evaluation of clinical, endoscopic, and histological endpoints.

Methods: This was a multicentre, multinational, open-label study in patients with moderately-to-severely active UC, defining early UC by a disease duration <4 years and bio-naïve and late UC by a disease duration > 4 years and additional exposure to tumour necrosis factor antagonists. Patients received standard treatment with intravenous vedolizumab for 52 weeks [300 mg Weeks 0, 2, 6, every 8 weeks thereafter without escalation].

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Article Synopsis
  • Advanced therapies like biologics and small molecules have been approved for treating moderate-to-severe ulcerative colitis, but patients with isolated proctitis were often excluded from clinical trials, creating an evidence gap for this specific group.
  • In a study of 167 patients with active ulcerative proctitis who had already failed conventional treatments, it was found that 36.3% achieved short-term steroid-free remission, with better outcomes for bionaive patients and those treated with vedolizumab.
  • The results support the effectiveness and safety of advanced therapies for ulcerative proctitis, suggesting that future trials should include these patients to better understand treatment options.
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Article Synopsis
  • * The trials, ELEVATE UC 52 and ELEVATE UC 12, involved random assignments of patients to either etrasimod (2 mg) or a placebo, with ELEVATE UC 52 focusing on a longer treatment period (12-week induction followed by 40-week maintenance) and ELEVATE UC 12 assessing only the induction period at 12 weeks.
  • * Both trials aimed to determine the proportion of
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Background: The combination of infliximab and immunosuppressant therapy is a standard management strategy for patients with Crohn's disease. Concerns regarding the implications of long-term combination therapy provided the rationale for a formal clinical trial of treatment de-escalation. Our aim was to compare the relapse rate and the time spent in remission over 2 years between patients continuing combination therapy and those stopping infliximab or immunosuppressant therapy.

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Background And Aims: The utility of real-world data is dependent on the quality and homogeneity of reporting. We aimed to develop a core outcome set for real-world studies in adult patients with inflammatory bowel disease [IBD].

Methods: Candidate outcomes and outcome measures were identified and categorised in a systematic review.

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Background And Aims: There is a need to evaluate the benefit-risk ratio of current therapies in inflammatory bowel disease (IBD) patients to provide the best quality of care. The primary objective of I-CARE (IBD Cancer and serious infections in Europe) was to assess prospectively safety concerns in IBD, with specific focus on the risk of cancer/lymphoma and serious infections in patients treated with anti-tumor necrosis factor and other biologic monotherapy as well as in combination with immunomodulators.

Methods: I-CARE was designed as a European prospective longitudinal observational multicenter cohort study to include patients with a diagnosis of Crohn's disease, ulcerative colitis, or IBD unclassified established at least 3 months prior to enrollment.

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Background And Aims: There are concerns regarding the potential impact of the COVID-19 outbreak on patients with inflammatory bowel disease [IBD]. We report on the impact of the COVID-19 outbreak in a European prospective cohort study of patients with IBD.

Patients And Methods: We prospectively collected data from 5457 patients with IBD nested in the ongoing I-CARE project and still followed up in April 2020, with monthly online monitoring of clinical activity, treatment, imaging and endoscopy.

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Background: There is a great unmet need for new therapeutics with novel mechanisms of action for patients with Crohn's disease. The ADVANCE and MOTIVATE studies showed that intravenous risankizumab, a selective p19 anti-interleukin (IL)-23 antibody, was efficacious and well tolerated as induction therapy. Here, we report the efficacy and safety of subcutaneous risankizumab as maintenance therapy.

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Background: Risankizumab, an interleukin (IL)-23 p19 inhibitor, was evaluated for safety and efficacy as induction therapy in patients with moderately to severely active Crohn's disease.

Methods: ADVANCE and MOTIVATE were randomised, double-masked, placebo-controlled, phase 3 induction studies. Eligible patients aged 16-80 years with moderately to severely active Crohn's disease, previously showing intolerance or inadequate response to one or more approved biologics or conventional therapy (ADVANCE) or to biologics (MOTIVATE), were randomly assigned to receive a single dose of intravenous risankizumab (600 mg or 1200 mg) or placebo (2:2:1 in ADVANCE, 1:1:1 in MOTIVATE) at weeks 0, 4, and 8.

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Background: Heterogeneity exists in reported outcomes and outcome measurement instruments [OMI] from observational studies. A core outcome set [COS] for observational and real-world evidence [RWE] in inflammatory bowel disease [IBD] will facilitate pooling large datasets. This systematic review describes and classifies clinical and patient-reported outcomes, for COS development.

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Article Synopsis
  • Recruitment rates for Crohn's disease and ulcerative colitis clinical trials are decreasing, impacting access to new treatments for patients with inflammatory bowel disease (IBD).
  • The study identifies challenges affecting recruitment and suggests solutions like being more patient-centric, using less appealing placebo formats, and reducing patient burden through innovative methods.
  • Conclusions emphasize the need for the IBD community to tackle various issues in trial conduct to enhance recruitment and ensure patients gain access to essential therapies.
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Article Synopsis
  • - The SERENE CD trial studied the effectiveness of higher vs. standard induction doses of adalimumab and two maintenance strategies (clinically adjusted vs. therapeutic drug monitoring) in treating moderate to severe Crohn's disease.
  • - Results indicated that there was no significant difference in clinical remission rates at week 4 or endoscopic response at week 12 between patients who received higher and standard induction doses.
  • - Both maintenance strategies showed similar effectiveness by week 56, and adalimumab was generally well tolerated with no new safety issues reported.
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Background & Aims: Crohn's disease (CD) patients included in the Tailored Treatment With Infliximab for Active Crohn's Disease (TAILORIX) trial started infliximab in combination with an immunosuppressant for 1 year. The aim of the present study was to determine the long-term disease course beyond the study period.

Methods: We compared the outcomes of patients who did or did not reach the primary end point of the TAILORIX trial, defined as sustained corticosteroid-free clinical remission from weeks 22 through 54, with no ulcers on ileocolonoscopy at week 54.

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