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Evaluation of S-600918 in patients with refractory chronic cough

A Phase 2b, multicenter, randomized, double-blind, placebo-controlled, parallel-group, dose-selection study of S-600918 in patients with refractory chronic cough

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2080224991
Enrollment
372
Registered
2019-12-20
Start date
2020-02-21
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Refractory chronic cough

Interventions

Sponsors

SHIONOGI & CO., LTD.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Key Inclusion Criteria: -Having refractory chronic cough (including unexplained chronic cough) for at least 1 year. -If female and of childbearing potential, agreement to use one of the allowed contraceptive methods. -Capable of giving signed informed consent.

Exclusion criteria

Exclusion criteria: Key Exclusion Criteria: -Currently smokes or uses potentially irritating inhalational agents (eg, e-cigarettes, smokeless cigarettes, vaping); stopped smoking or using potentially irritating inhalational agents within the last year; or has a smoking history of 20 pack-years or more. -Has chronic obstructive pulmonary disease or uncontrolled asthma symptoms (excluding cough). -Has a clinically unstable medical condition. -History of or ongoing significant psychiatric disorder. -History of respiratory tract infection or significant change in lung function or a pulmonary condition in the last 4 weeks. -History of malignancy in the last 5 years. -History of severe drug allergy. -History of alcohol or drug abuse in the last year or currently uses any form of marijuana or illicit drugs. -Has a clinically significant finding on a chest x-ray or chest computed tomography (CT) scan in the last year. -Has systolic blood pressure >160 mm Hg or diastolic blood pressure >90 mm Hg. -Received S-600918 previously. -Received an investigational drug in the last 3 months. -Received an angiotensin converting enzyme (ACE) inhibitor in the last 3 months or requires such treatment. -Has a positive serologic test for human immunodeficiency virus (HIV) antigen or antibody, hepatitis B virus surface antigen, or hepatitis C virus ribonucleic acid (RNA). -If female, pregnant or trying to become pregnant or breastfeeding.

Design outcomes

Primary

MeasureTime frame
efficacy -Change in cough at Week 4 calculated as the ratio of number of coughs per hour in 24 hours at Week 4 to Baseline [Time Frame:Baseline and Week 4] The number of coughs per hour for 24 hours will be measured using a cough monitor.

Secondary

MeasureTime frame
efficacy -Percentage of participants with a reduction from baseline in the number of coughs per hour in 24 hours by >=30% [Time Frame:Baseline and Week 4] -Percentage of participants with a reduction from baseline in the number of coughs per hour in 24 hours by >=50% [Time Frame:Baseline and Week 4] -Percentage of participants with a reduction from baseline in the number of coughs per hour in 24 hours by >=70% [Time Frame:Baseline and Week 4] -Change in cough at Week 4 calculated as the ratio of the number of coughs per hour while awake at Week 4 to Baseline [Time Frame:Baseline and Week 4] -Percentage of participants with a reduction from baseline in the number of coughs per hour while awake >=30% [Time Frame:Baseline and Week 4] -Percentage of participants with a reduction from baseline in the number of coughs per hour while awake >=50% [Time Frame:Baseline and Week 4] -Percentage of participants with a reduction from baseline in the number of coughs per hour while awake >=70% [Time Frame:Baseline and Week 4] -Change in cough at Week 4 calculated as the ratio of the number of coughs per hour while asleep at Week 4 to Baseline [Time Frame:Baseline and Week 4] -Change from baseline in weekly cough severity [Time Frame:Baseline and Week 4] -Change from baseline through Day 7 in daily cough severity [Time Frame:Baseline and Day 7] -Change form baseline in Leicester Cough Questionnaire(LCQ) [Time Frame:Baseline and Week 4] -Percentage of participants with an increase in LCQ of >=1.3 points [Time Frame:Baseline and Week 4] -Change form baseline in International Consultation on Incontinence Modular Questionnaire Short Form (ICIQ-SF) [Time Frame:Baseline and Week 4] -Change form baseline in Short Form (36) Health Survey (SF-36) [Time Frame: Baseline and Week 4] -Patient Global Impression of Change (PGIC) [Time Frame: Week 4]

Countries

Europe, Japan, North America

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026