Evidence map›Paper›PMID 27669680›Full record

Trial reportAlimentary pharmacology & therapeutics2016

Effects of baseline abdominal pain and bloating on response to lubiprostone in patients with irritable bowel syndrome with constipation.

L Chang, W D Chey, D Drossman, T Losch-Beridon, M Wang, P Lichtlen, S Mareya

Open access · hybridAbstract readClinical Trial, Phase IIIRandomized Controlled Trial
In one paragraph

Trial report in Alimentary pharmacology & therapeutics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Review
  6. [Pharmacologic Treatment of Irritable Bowel Syndrome with Predominant Constipation].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2025
    Review
  7. The Efficacy of Lubiprostone in Patients of Constipation: An Updated Systematic Review and Meta-Analysis.JGH open : an open access journal of gastroenterology and hepatology · 2025
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Management of scleroderma gastrointestinal disease: Lights and shadows.Journal of scleroderma and related disorders · 2022
    Review
  15. Review
  16. Management of functional gastrointestinal disorders.Clinical medicine (London, England) · 2021
    Article
  17. Article
  18. Article
  19. Article
  20. Update on Pharmacotherapy for Irritable Bowel Syndrome.Current gastroenterology reports · 2019
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

L ChangDavid Geffen School of Medicine at UCLA, Los Angeles, CA, USA. linchang@mednet.ucla.edu.
W D CheyUniversity of Michigan, School of Medicine, Ann Arbor, MI, USA.
D DrossmanUniversity of North Carolina and Drossman Gastroenterology, Chapel Hill, NC, USA.
T Losch-BeridonSucampo Pharma Americas, LLC, Bethesda, MD, USA.
M WangSucampo Pharma Americas, LLC, Bethesda, MD, USA.
P LichtlenSucampo AG, Zug, Switzerland.
S MareyaSucampo Pharma Americas, LLC, Bethesda, MD, USA.
Sucampo (Switzerland) · CHUniversity of California, Los Angeles · USUniversity of Michigan–Ann Arbor · USUniversity of North Carolina at Chapel Hill · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLubiprostone (8 μg b.d.) received US Food and Drug Administration (FDA) approval in 2008 for the treatment of constipation-predominant irritable bowel syndrome (IBS-C) in women aged ≥18 years. In 2012, the FDA issued new guidance for IBS-C clinical trials, recommending a composite endpoint incorporating both abdominal pain and stool frequency.

aimIn a post hoc analysis, similar criteria were applied to data from two pivotal, phase 3, double-blind, randomised trials of lubiprostone in patients with IBS-C.

methodsIncluded patients had a baseline spontaneous bowel movement (SBM) frequency <3/week and abdominal pain or bloating ratings ≥1.36 on a 5-point scale [0 (absent) to 4 (very severe)]. Responders (composite endpoint) had a mean pain reduction ≥30% compared with baseline, and an increase from baseline of ≥1 SBM/week for ≥6 of the 12 treatment weeks. Lubiprostone effects on abdominal pain alone were also evaluated, as were bloating alone and in a composite endpoint with stool frequency.

resultsIn pooled data, 325 patients received lubiprostone and 180 received placebo. Rates of response were higher with lubiprostone vs. placebo for the composite endpoint of improved pain and stool frequency (26.3% vs. 15.3%, respectively; P = 0.008) and the composite endpoint of improved bloating and stool frequency (23.8% vs. 12.6%, respectively; P = 0.012). Response rates were also higher with lubiprostone vs. placebo for abdominal pain alone (P = 0.005) and bloating alone (P = 0.012).

conclusionLubiprostone was significantly more effective than placebo in improving abdominal pain or bloating, and also in composite endpoints that included stool frequency.

Indexed as

Abdominal PainAdultConstipationDouble-Blind MethodFemaleFlatulenceHumansIrritable Bowel SyndromeLubiprostoneMaleMiddle AgedLubiprostone

Identifiers

PMID27669680
PMCPMC5215520
OpenAlexW2525181864

What OpenQuestion holds

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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.