Evidence map›Paper›PMID 29771924›Full record

SynthesisPloS one2018

Obesity and response to anti-tumor necrosis factor-α agents in patients with select immune-mediated inflammatory diseases: A systematic review and meta-analysis.

Siddharth Singh, Antonio Facciorusso, Abha G Singh, Niels Vande Casteele, Amir Zarrinpar, Larry J Prokop, Eduardo L Grunvald, Jeffrey R Curtis, William J Sandborn

Erratum issuedOpen access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 158 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
158citing papers in PubMed, 4 pooled it
21.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

158 citing papers in PubMed, 4 syntheses or guidelines pooled it, 276 citations in OpenAlex.

  1. Impact of weight-loss interventions on psoriasis severity: A systematic review and meta-analysis.Journal of the European Academy of Dermatology and Venereology : JEADV · 2026
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98 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Siddharth SinghDivision of Gastroenterology, University of California San Diego, La Jolla, California, United States of America.ORCID 0000-0002-2640-7269
Antonio FacciorussoGastroenterology Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy.
Abha G SinghDivision of Rheumatology, Allergy and Immunology, University of California San Diego, La Jolla, California, United States of America.
Niels Vande CasteeleDivision of Gastroenterology, University of California San Diego, La Jolla, California, United States of America.
Amir ZarrinparDivision of Gastroenterology, University of California San Diego, La Jolla, California, United States of America.
Larry J ProkopDepartment of Library Services, Mayo Clinic, Rochester, Minnesota, United States of America.
Eduardo L GrunvaldWeight Management Program, Department of Medicine, University of California San Diego, La Jolla, California, United States of America.
Jeffrey R CurtisDivision of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
William J SandbornDivision of Gastroenterology, University of California San Diego, La Jolla, California, United States of America.
University of California San Diego · USMayo Clinic · USUniversity of Alabama at Birmingham · USUniversity of Foggia · IT

Funding

UC San Diego Clinical and Translational Research InstituteUL1TR001442 · NCATS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI FIRESTEIN, GARY S, HOGARTH, MICHAEL · 2015 to 2024
$88.3M
UC San Diego Clinical and Translational Research InstituteTL1TR001443 · NCATS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DEPP, COLIN A. · 2015 to 2019
$3.4M
Comparative Risks and Benefits of Pharmacological Therapies for Older Patients with Inflammatory Bowel DiseasesK23DK117058 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SINGH, SIDDHARTH · 2018 to 2022
$971k
The Relationship of Gut Microbiome and Time Restricted Feeding in MetabolismK08DK102902 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ZARRINPAR, AMIR · 2015 to 2019
$789k
NCATS NIH HHS TL1 TR001443NCATS NIH HHS UL1 TR001442NIDDK NIH HHS K08 DK102902NIDDK NIH HHS K23 DK117058NIH HHS K08 DK102902
6 · The paper itself

Abstract

objectivesWe sought to evaluate the association between obesity and response to anti-tumor necrosis factor-α (TNF) agents, through a systematic review and meta-analysis.

methodsThrough a systematic search through January 24, 2017, we identified randomized controlled trials (RCTs) or observational studies in adults with select immune-mediated inflammatory diseases-inflammatory bowel diseases (IBD), rheumatoid arthritis (RA), spondyloarthropathies (SpA), psoriasis and psoriatic arthritis (PsA)-treated with anti-TNF agents, and reporting outcomes, stratified by body mass index (BMI) categories or weight. Primary outcome was failure to achieve clinical remission or response or treatment modification. We performed random effects meta-analysis and estimated odds ratios (OR) and 95% confidence interval (CI).

resultsBased on 54 cohorts including 19,372 patients (23% obese), patients with obesity had 60% higher odds of failing therapy (OR,1.60; 95% CI,1.39-1.83;I2 = 71%). Dose-response relationship was observed (obese vs. normal BMI: OR,1.87 [1.39-2.52]; overweight vs. normal BMI: OR,1.38 [1.11-1.74],p = 0.11); a 1kg/m2 increase in BMI was associated with 6.5% higher odds of failure (OR,1.065 [1.043-1.087]). These effects were observed across patients with rheumatic diseases, but not observed in patients with IBD. Effect was consistent based on dosing regimen/route, study design, exposure definition, and outcome measures. Less than 10% eligible RCTs reported outcomes stratified by BMI.

conclusionsObesity is an under-reported predictor of inferior response to anti-TNF agents in patients with select immune-mediated inflammatory diseases. A thorough evaluation of obesity as an effect modifier in clinical trials is warranted, and intentional weight loss may serve as adjunctive treatment in patients with obesity failing anti-TNF therapy.

Indexed as

HumansInflammationObesityRandomized Controlled Trials as TopicTumor Necrosis Factor-alphaTumor Necrosis Factor-alpha

Identifiers

PMID29771924
PMCPMC5957395
OpenAlexW2804607344

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.