A Study of Efficacy and Safety of AX-8 in Chronic Cough

NCT ID: NCT04866563

Last Updated: 2025-09-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

108 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-08-11

Study Completion Date

2025-06-16

Brief Summary

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This is a randomized, double-blind, placebo-controlled, crossover, multicenter study of AX-8 in participants with unexplained or refractory chronic cough designed to evaluate the effectiveness of AX-8 in reducing cough frequency.

Detailed Description

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Conditions

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Chronic Cough

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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AX-8 to Placebo, Part 1 of the study

AX-8 BID, taken for 2 weeks, followed by a 1-week washout period and then Placebo BID, taken for 2 weeks.

Group Type EXPERIMENTAL

AX-8, Part 1 of the study

Intervention Type DRUG

orally disintegrating tablets, BID

Placebo, Part 1 of the study

Intervention Type DRUG

orally disintegrating tablets, BID

Placebo to AX-8, Part 1 of the study

Placebo BID, taken for 2 weeks, followed by a 1-week washout period and then AX-8 BID, taken for 2 weeks.

Group Type EXPERIMENTAL

AX-8, Part 1 of the study

Intervention Type DRUG

orally disintegrating tablets, BID

Placebo, Part 1 of the study

Intervention Type DRUG

orally disintegrating tablets, BID

AX-8 to Placebo, Part 2 of the study

AX-8 TID, taken for 2 weeks, followed by a 1-week washout period and then Placebo BID, taken for 2 weeks.

Group Type EXPERIMENTAL

AX-8, Part 2 of the study

Intervention Type DRUG

orally disintegrating tablets, TID

Placebo, Part 2 of the study

Intervention Type DRUG

orally disintegrating tablets, TID

Placebo to AX-8, Part 2 of the study

Placebo TID, taken for 2 weeks, followed by a 1-week washout period and then AX-8 BID, taken for 2 weeks.

Group Type EXPERIMENTAL

AX-8, Part 2 of the study

Intervention Type DRUG

orally disintegrating tablets, TID

Placebo, Part 2 of the study

Intervention Type DRUG

orally disintegrating tablets, TID

Interventions

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AX-8, Part 1 of the study

orally disintegrating tablets, BID

Intervention Type DRUG

Placebo, Part 1 of the study

orally disintegrating tablets, BID

Intervention Type DRUG

AX-8, Part 2 of the study

orally disintegrating tablets, TID

Intervention Type DRUG

Placebo, Part 2 of the study

orally disintegrating tablets, TID

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Chest radiograph or computed tomography (CT) of the thorax approximately 12 months before screening not demonstrating any abnormality considered to be significantly contributing to the chronic cough
* Have a diagnosis of refractory chronic cough (RCC) or unexplained chronic cough (UCC) for at least one year
* Women of childbearing potential and their male partners must use 2 acceptable methods of contraception
* Male subjects and their female partners of childbearing potential must use 2 acceptable methods of contraception
* Have provided written informed consent

Exclusion Criteria

* Positive diagnostic nucleic acid test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
* Current smoker (including e-cigarettes), individuals who have given up smoking within the past 12 months, or individuals with a smoking history of 20 pack-years
* Treatment with an ACE-inhibitor as the potential cause of a subject's cough or requiring treatment with an ACE-inhibitor during the study or within 12 weeks prior to the Baseline Visit
* History of upper or lower respiratory tract infection or recent significant change in pulmonary status within 4 weeks
* History of cystic fibrosis
* Positive test for any drug of abuse
* History of malignancy within 5 years prior to the Baseline Visit
* History of infection or known active infection with human immunodeficiency (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV)
* History of hypersensitivity or intolerance to AX-8 or other TRPM8 agonists or any of the excipients
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Axalbion SA

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Chief Medical Officer

Role: STUDY_DIRECTOR

Axalbion Therapeutics, LTD.

Locations

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Axalbion Study Site 4406

Birmingham, England, United Kingdom

Site Status

Axalbion Study Site 4404

Broughton, England, United Kingdom

Site Status

Axalbion Study Site 4409

Chelmsford, England, United Kingdom

Site Status

Axalbion Study Site 4413

Coventry, England, United Kingdom

Site Status

Axalbion Study Site 4401

London, England, United Kingdom

Site Status

Axalbion Study Site 4402

London, England, United Kingdom

Site Status

Axalbion Study Site 4410

London, England, United Kingdom

Site Status

Axalbion Study Site 4403

Manchester, England, United Kingdom

Site Status

Axalbion Study Site 4405

North Shields, England, United Kingdom

Site Status

Axalbion Study Site 4417

Orpington, England, United Kingdom

Site Status

Axalbion Study Site 4407

Oxford, England, United Kingdom

Site Status

Axalbion Study Site 4411

Preston, England, United Kingdom

Site Status

Axalbion Study Site 4412

Shipley, England, United Kingdom

Site Status

Axalbion Study Site 4408

Newport, Wales, United Kingdom

Site Status

Axalbion Study Site 4414

Belfast, , United Kingdom

Site Status

Axalbion Study Site 4415

Northwood, , United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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2021-000844-23

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

AX8-003

Identifier Type: -

Identifier Source: org_study_id

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