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A Phase 2, Multi-center Study to Evaluate the Efficacy and Safety of ONO-2952 in Female Subjects With Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

A Phase 2, Multi-center, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of ONO-2952 in Female Subjects With Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01844180
Acronym
RESTORE
Enrollment
200
Registered
2013-05-01
Start date
2013-04-30
Completion date
Unknown
Last updated
2016-04-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Irritable Bowel Syndrome (IBS)

Keywords

Irritable Bowel Syndrome, IBS, ONO-2952

Brief summary

The objective of this study is to explore efficacy, safety and tolerability of ONO-2952 in female subjects with Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D).

Interventions

Sponsors

Ono Pharma USA Inc
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Female 18-65 years of age (inclusive) 2. Diagnosed with IBS based on the following criteria (Rome III criteria): * Symptom onset at least 6 months prior to diagnosis, and * Recurrent abdominal pain or discomfort at least 3 days per month for the past 3 months, and * Abdominal discomfort or pain associated with two or more of the following at least 25% of the time: 1. Improvement with defecation 2. Onset associated with a change in frequency of stool/defecation 3. Onset associated with a change in form (appearance) of stool 3. Diagnosed with IBS-D, defined as loose/watery stools ≥ 25% and hard/lumpy stools ≤ 25% of defecations

Exclusion criteria

* Any structural abnormality of the gastrointestinal (GI) tract (other than esophagitis or gastritis) * History of Crohn's disease, ulcerative colitis, diabetes mellitus, lactose malabsorption, malabsorption syndromes, celiac sprue, or any upper GI symptoms that may impact the assessment of IBS symptoms

Design outcomes

Primary

MeasureTime frame
Abdominal pain or stool symptoms in female subjects with IBS-D by using a numeric pain rating scale and the Bristol Stool Scale (BSS)4 weeks

Secondary

MeasureTime frame
Change in IBS related symptoms and quality of life (QoL) by questionaire assessments4 weeks
Safety assessed through adverse events and clinical laboratory values4 weeks

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026