Publications by authors named "Andres J Yarur"

Background: The systematic review and meta-analysis (SRMA) evaluates the safety and effectiveness of combining biologics and/or small molecules in treating refractory inflammatory bowel diseases (IBD).

Methods: Our 2022 SRMA identified 13 studies published until November 3, 2020. An updated systematic search was completed from May 2020 through January 31, 2024.

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Background: TNF-like ligand 1A (TL1A) is an emerging therapeutic target for inflammatory bowel disease. We evaluated the safety and efficacy of multiple doses of afimkibart, a TL1A-directed antibody, in patients with moderately-to-severely active ulcerative colitis.

Methods: The multicentre, double-blind, treat-through, multi-dose, randomised, placebo-controlled, phase 2b, TUSCANY-2 trial was conducted at 114 centres in 23 countries across North America, Europe, Asia, Africa, Australia, and South America.

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Background & Aims: Etrasimod is an oral, once-daily, selective sphingosine 1-phosphate (S1P) receptor modulator for the treatment of moderately to severely active ulcerative colitis. In this post hoc analysis, induction and maintenance efficacy of etrasimod 2 mg versus placebo were assessed by baseline Mayo endoscopic subscore in ELEVATE UC 52 and ELEVATE UC 12.

Methods: Moderate and severe endoscopic disease were defined as a centrally read endoscopic subscore of 2 and 3, respectively.

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Corticosteroids are one of the most frequently prescribed medications for the management of inflammatory bowel disease. Although corticosteroids have a critical role for select cases for induction of remission, there is a notable risk of overuse and misuse of corticosteroids. This narrative review updates the evolving use of corticosteroids in the management of inflammatory bowel disease.

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Background: We aimed to evaluate the effectiveness and safety of risankizumab (RZB) for Crohn's disease (CD) in routine clinical practice.

Methods: We performed a retrospective review of a multicenter consortium of CD patients treated with RZB. Co-primary outcomes were week 12 clinical remission (Harvey Bradshaw Index [HBI] score of ≤4 or physician global assessment in those without HBI or with ileostomy) and 6-month endoscopic remission (Simplified Endoscopic Mucosal Assessment for Crohn's Disease of 0-1 or absence of ulcers).

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: This study aimed to establish the clinical utility of a therapeutic drug monitoring (TDM)-supported, model-informed precision dosing (MIPD) approach (precision-guided dosing [PGD]) by assessing the impact of pharmacokinetic (clearance [CL]) and clinical laboratory parameters on adalimumab (ADA) dosage adjustments during maintenance therapy for inflammatory bowel disease (IBD). : In the EMPOWER study, blood was collected at any time post-ADA injection. Pharmacokinetic (PK) testing was conducted in an accredited lab.

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Background & Aims: We aimed to describe the real-world effectiveness and safety of upadacitinib (UPA), an oral Janus kinase 1 inhibitor, in patients with Crohn's disease (CD).

Methods: A retrospective analysis was conducted across 9 centers in the United States, focusing on adults with CD treated with UPA, 45 mg, as induction therapy for active luminal disease. The coprimary end points were clinical remission at 12 weeks (Harvey Bradshaw Index ≤4 or absence of symptoms on physician's global assessment) and endoscopic remission at 6 months (Simplified Endoscopic Mucosal Assessment for Crohn's Disease score of 0-1 or absence of ulcers).

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Background: Etrasimod is an oral, once daily, selective sphingosine 1-phosphate (S1P)1,4,5 receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC). This post hoc analysis of the ELEVATE UC clinical program describes etrasimod efficacy and safety by patients' baseline disease activity.

Methods: Predefined efficacy endpoints were assessed at week 12 in patients with moderately (modified Mayo score [MMS] 5-7) or severely (MMS 8-9) active UC using pooled data from ELEVATE UC 52 and ELEVATE UC 12.

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: This study aimed to compare the association of ustekinumab (UST) drug clearance (CL) and trough drug concentrations with disease activity in patients with inflammatory bowel diseases (IBDs). : A prospective cohort of 83 patients with IBD receiving maintenance therapy with 90 mg subcutaneous UST was analyzed using Bayesian PK modeling. UST concentrations and antibodies to UST (ATU) were collected at the trough and measured using a drug-tolerant homogenous mobility shift assay (HMSA).

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Background: Etrasimod is an oral, once-daily (q.d.), selective sphingosine 1-phosphate (S1P) receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC).

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Introduction: High body mass index (BMI) may reduce ulcerative colitis (UC) treatment efficacy. Etrasimod is an oral, once-daily (QD), selective sphingosine 1-phosphate 1,4,5 receptor modulator for the treatment of moderately to severely active UC. This post hoc analysis assessed treatment outcomes according to BMI in ELEVATE UC 52 and ELEVATE UC 12.

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Objective: Etrasimod is an oral, once-daily, selective sphingosine 1-phosphate (S1P) receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC). S1P receptor expression on cardiac cells is involved in cardiac conduction. We report cardiovascular treatment-emergent adverse events (TEAEs) associated with S1P receptor modulators and other cardiovascular events in the etrasimod UC clinical programme.

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Background: Etrasimod is an oral, once daily (QD), selective sphingosine 1-phosphate1,4,5 receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC). We assessed the benefit of etrasimod monotherapy and the impact of concomitant corticosteroids (CS) and/or 5-aminosalicylates (5-ASA) therapy.

Methods: In ELEVATE UC 52 and ELEVATE UC 12, patients with moderately to severely active UC were randomized 2:1 to etrasimod 2 mg QD or placebo for 52 and 12 weeks, respectively.

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The concept of using diet as therapy in inflammatory bowel disease is of interest to clinicians and patients. Once considered to play a minor role, diet is now known to not only affect disease onset but may also serve as a therapeutic tool for inducing and maintaining remission and improving surgical outcomes. Further research is needed to fully elucidate how, when, and in whom diet therapies may be best applied to improve clinical and disease outcomes.

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Article Synopsis
  • This study compared the effectiveness and safety of vedolizumab and adalimumab over 12 months in patients with Crohn's disease who had not previously been treated with biologics.
  • Data from 218 patients treated with vedolizumab and 144 treated with adalimumab showed that vedolizumab resulted in higher rates of clinical remission and treatment persistence, but similar rates of clinical response and mucosal healing between the two drugs.
  • Fewer serious adverse events were observed with vedolizumab, suggesting it may be a safer option, although rates of serious infections and disease-related complications were comparable between both treatments.
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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: The aim of the study was to investigate the risk factors associated with the development of small bowel obstruction (SBO) in Crohn's disease (CD) after small bowel resection (SBR) that are not due to active/recurrent inflammation.

Methods: We conducted a retrospective cohort study of patients who had SBR for active or complicated CD. Abstracted data included demographics, phenotype, therapies for CD, endoscopic disease recurrence, and several surgical variables.

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Article Synopsis
  • * Both groups had similar rates of all infections, serious infections, herpes zoster, and opportunistic infections, with very few occurrences in either group.
  • * The study also noted that low lymphocyte counts (ALC <0.2) did not correlate with serious infections, indicating that etrasimod may be a safe option for patients with UC regarding infection risk.
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Article Synopsis
  • Etrasimod, a daily oral medication for ulcerative colitis, was analyzed for its effectiveness in patients with isolated proctitis, which has often been excluded from such trials.
  • In a study involving patients with isolated proctitis and other forms of colitis, those taking etrasimod showed significant improvements in clinical remission and endoscopic results compared to those on placebo.
  • The safety profile of etrasimod remained consistent across different patient groups, indicating it is a promising treatment option for both isolated and more extensive colitis conditions.
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Background: Evidence suggests inflammatory mesenteric fat is involved in post-operative recurrence (POR) of Crohn's disease (CD). However, its prognostic value is uncertain, in part, due to difficulties studying it non-invasively.

Aim: To evaluate the prognostic value of pre-operative radiographic mesenteric parameters for early endoscopic POR (ePOR).

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Background: Pivotal trials have shown that ustekinumab is effective in ulcerative colitis (UC). However, the population included in these trials do not represent the cohort of patients treated in the real world. In this study, we aimed to describe the effectiveness and safety of ustekinumab in a clinical cohort of patients with UC.

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Article Synopsis
  • The review discusses the development of new small molecule drugs (SMDs) for treating Inflammatory Bowel Diseases (IBD) due to challenges with existing therapies.
  • It highlights common adverse events (AEs) linked to these SMDs, such as infections and laboratory abnormalities, encouraging careful monitoring during treatment.
  • Clinicians are advised to inform patients about these AEs while emphasizing that the overall safety profile of the new SMDs is favorable.
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Article Synopsis
  • Etrasimod, an oral medication taken once daily, is being studied for its effectiveness in treating moderately to severely active ulcerative colitis (UC) through a post-hoc analysis of a phase 2 trial.
  • In the trial, 156 adults were given either the drug (at doses of 1 mg or 2 mg) or a placebo over 12 weeks, with results showing that those taking the 2 mg dose had a significantly higher rate of achieving endoscopic improvement and histologic remission compared to the placebo group.
  • The study also found a correlation between faecal calprotectin (FCP) and C-reactive protein (CRP) levels with treatment efficacy, suggesting that these biomarkers could be
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