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BLU-5937

Phase 3

Cough | Small molecule | Other |GSK plc|Last Updated: Apr 15, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment1,890
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05600777A 24-Week Study of the Efficacy and Safety of BLU-5937 in Adults With Refractory Chronic CoughPHASE3 ACTIVE NOT_RECRUITING 975Dec 5, 2022Mar 17, 2027Apr 15, 2026252 United States, Australia +11
NCT05599191A 52-Week Study of the Efficacy and Safety of BLU-5937 in Adults With Refractory Chronic CoughPHASE3 ACTIVE NOT_RECRUITING 825Oct 25, 2022May 28, 2026Jun 10, 2025191 United States, Argentina +12
NCT03638180BLU-5937: First-in-Human, Single and Multiple Doses Escalation, Safety, Tolerability, Pharmacokinetics and Food EffectPHASE1 COMPLETED 90Jul 9, 2018Oct 25, 2018Nov 9, 20181 Canada
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Study Endpoints
Primary Endpoints
24-Hour Cough Frequency
Week 24

Assessed using an ambulatory cough monitor

Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs) up to Week 24
Up to Week 24

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Number of Participants with Adverse Events of Medical Interest (AEMIs) up to Week 24
Up to Week 24

An AEMI is an event of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring is appropriate. The following are AEMIs for this study: taste disturbance, oral hypoesthesia, oral paresthesia, and new or worsening findings of the cornea.

Number of Participants with Study Treatment Discontinuation due to AEs and SAEs up to Week 24
Up to Week 24

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Number of Participants with AEs and SAEs Leading to Study Withdrawal up to Week 24
Up to Week 24

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Change from Baseline in Vital Signs: Systolic and Diastolic Blood Pressure (millimeters of mercury [mm Hg]) at Week 24
Baseline, Week 24
Change from Baseline in Vital Sign: Pulse (beats per minute) at Week 24
Baseline, Week 24
Change from Baseline in Vital Sign: Respiratory Rate (breaths per minute) at Week 24
Baseline, Week 24
Change from Baseline in Vital Sign: Body Temperature (degrees Celsius) at Week 24
Baseline, Week 24
Change from Baseline in Vital Sign: Weight (kilograms [kg]) at Week 24
Baseline, Week 24
Change from Baseline in Male Reproductive Hormone: Total Testosterone (nanomoles per liter [nmol/L]) at Week 24
Baseline, Week 24
Change from Baseline in Male Reproductive Hormones: Follicle-Stimulating Hormone [FSH] and Luteinizing Hormone [LH] (international units per liter [IU/L]) at Week 24
Baseline, Week 24
Change from Baseline in Male Reproductive Hormone: Inhibin B (nanograms per liter [ng/L]) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameter: Red Blood Cell (RBC) Count (10^12 cells per liter) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameters: Hemoglobin and Mean Corpuscular Hemoglobin Concentration (MCHC) (grams per liter [g/L]) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameter: Hematocrit (percentage) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameter: Mean Corpuscular Volume (MCV) (femtoliters [fL]) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameter: Mean Corpuscular Hemoglobin (MCH) (picograms per cell [pg/cell]) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameter: Red Cell Distribution Width (RDW) (percentage) at Week 24
Baseline, Week 24
Change from Baseline in Hematology Parameters: White Blood Cell (WBC) Count (neutrophils, lymphocytes, monocytes, eosinophils, and basophils) and Platelet Count (10^9 cells per liter) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), and Gamma-Glutamyl Transferase (GGT) (units per liter [U/L]) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Alkaline Phosphatase (ALP) and Creatine Kinase (CK) (international units per liter [IU/L]) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Total Bilirubin, Direct and Indirect Bilirubin, and Creatinine (micromoles per liter) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Sodium, Potassium, Chloride, Calcium, Magnesium, Bicarbonate, Glucose, and Blood Urea Nitrogen (BUN) (millimoles per liter [mmol/L]) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Protein and Albumin (grams per liter [g/L]) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameter: Estimated Glomerular Filtration Rate (eGFR) (milliliters per minute per 1.73 meters squared [mL/min/1.73 m^2]) at Week 24
Baseline, Week 24
Change from Baseline in Clinical Chemistry Parameters: Prothrombin Time (PT) and Activated Partial Thromboplastin Time (aPTT) (seconds) at Week 24
Baseline, Week 24
Change from Baseline in Electrocardiogram (ECG) Value: Heart Rate (beats per minute) at Week 24
Baseline, Week 24
Change from Baseline in ECG Value: PR Interval, QT Interval, RR Interval, QRS Interval, and Corrected QT Interval Using Fridericia's Formula (QTcF) (milliseconds) at Week 24
Baseline, Week 24
Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs) up to Week 52
Up to Week 52

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Number of Participants with Adverse Events of Medical Interest (AEMIs) up to Week 52
Up to Week 52

An AEMI is an event of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring is appropriate. The following are AEMIs for this study: taste disturbance, oral hypoesthesia, oral paresthesia, and new or worsening findings of the cornea.

Number of Participants with Study Treatment Discontinuation due to AEs and SAEs up to Week 52
Up to Week 52

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Number of Participants with AEs and SAEs Leading to Study Withdrawal up to Week 52
Up to Week 52

An AE is any untoward medical occurrence in a clinical study participant administered a medicinal product and which does not necessarily have a causal relationship with that product. An SAE is defined as any untoward medical occurrence that, at any dose, meets one or more of the criteria listed: results in death, is life-threatening; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect in the offspring of a study participant; or other situations as per the medical or scientific judgment of the Investigator.

Change from Baseline in Vital Signs: Systolic and Diastolic Blood Pressure (millimeters of mercury [mm Hg]) at Week 52
Baseline, Week 52
Change from Baseline in Vital Sign: Pulse (beats per minute) at Week 52
Baseline, Week 52
Change from Baseline in Vital Sign: Respiratory Rate (breaths per minute) at Week 52
Baseline, Week 52
Change from Baseline in Vital Sign: Body Temperature (degrees Celsius) at Week 52
Baseline, Week 52
Change from Baseline in Vital Sign: Weight (kilograms [kg]) at Week 52
Baseline, Week 52
Change from Baseline in Male Reproductive Hormone: Total Testosterone (nanomoles per liter [nmol/L]) at Week 52
Baseline, Week 52
Change from Baseline in Male Reproductive Hormones: Follicle-Stimulating Hormone [FSH] and Luteinizing Hormone [LH] (international units per liter [IU/L]) at Week 52
Baseline, Week 52
Change from Baseline in Male Reproductive Hormone: Inhibin B (nanograms per liter [ng/L]) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameter: Red Blood Cell (RBC) Count (10^12 cells per liter) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameters: Hemoglobin and Mean Corpuscular Hemoglobin Concentration (MCHC) (grams per liter [g/L]) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameter: Hematocrit (percentage) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameter: Mean Corpuscular Volume (MCV) (femtoliters [fL]) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameter: Mean Corpuscular Hemoglobin (MCH) (picograms per cell [pg/cell]) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameter: Red Cell Distribution Width (RDW) (percentage) at Week 52
Baseline, Week 52
Change from Baseline in Hematology Parameters: White Blood Cell (WBC) Count (neutrophils, lymphocytes, monocytes, eosinophils, and basophils) and Platelet Count (10^9 cells per liter) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), and Gamma-Glutamyl Transferase (GGT) (units per liter [U/L]) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Alkaline Phosphatase (ALP) and Creatine Kinase (CK) (international units per liter [IU/L]) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Total Bilirubin, Direct and Indirect Bilirubin, and Creatinine (micromoles per liter) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Sodium, Potassium, Chloride, Calcium, Magnesium, Bicarbonate, Glucose, and Blood Urea Nitrogen (BUN) (millimoles per liter [mmol/L]) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Protein and Albumin (grams per liter [g/L]) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameter: Estimated Glomerular Filtration Rate (eGFR) (milliliters per minute per 1.73 meters squared [mL/min/1.73 m^2]) at Week 52
Baseline, Week 52
Change from Baseline in Clinical Chemistry Parameters: Prothrombin Time (PT) and Activated Partial Thromboplastin Time (aPTT) (seconds) at Week 52
Baseline, Week 52
Change from Baseline in Electrocardiogram (ECG) Value: Heart Rate (beats per minute) at Week 52
Baseline, Week 52
Change from Baseline in ECG Value: PR Interval, QT Interval, RR Interval, QRS Interval, and Corrected QT Interval Using Fridericia's Formula (QTcF) (milliseconds) at Week 52
Baseline, Week 52
Number and severity of treatment emergent adverse events (TEAEs)
up to 48 hours after the last dose

Number and severity of TEAEs collected from dosing until follow up 48 hours after last dose

Secondary Endpoints
Change from Baseline in Cough Severity Visual Analogue Scale at Week 24
Baseline, Week 24
Percentage of Participants With Greater than or Equal to (>=) 30 mm Reduction From Baseline in Cough Severity Visual Analog Scale at Week 24
Baseline, Week 24
Awake Cough Frequency at Week 24
Week 24
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
BLU-5937 25 mgEXPERIMENTALBLU-5937 oral dose 25 mg twice a day.
BLU-5937 50 mgEXPERIMENTALBLU-5937 oral dose 50 mg twice a day.
PlaceboPLACEBO_COMPARATORMatching Placebo for BLU-5937 oral dose twice a day.
Single Ascending DosesEXPERIMENTALSingle ascending doses, 6 dose levels
Multiple Ascending DosesEXPERIMENTALMultiple ascending doses, 3 dose levels
Interventions
NameTypeDescription
BLU-5937DRUGOral administration of BLU-5937 Tablets
PlaceboDRUGOral administration of matching placebo for BLU-5937 Tablets
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Eligibility Criteria
Age Range18 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites252

Inclusion Criteria: * Capable of giving signed informed consent * Refractory chronic cough (including unexplained chronic cough) for at least one year * Women of child-bearing potential must use a highly effective contraception method during the study and for at least 14 days after the last dose E...

Countries:United StatesAustraliaCanadaChinaCzechiaGermanyIndiaJapanNew ZealandSlovakiaSouth KoreaTaiwanUnited KingdomArgentinaBelgiumColombiaFranceHungaryIsraelNetherlandsPolandSouth AfricaSpain
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05599191primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT05600777Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT05600777studyFirstPostDate: changed
LOWMay 24, 2026NCT05599191studyFirstPostDate: changed