Clinical trials: Refractory Chronic Cough
Refractory Chronic Cough
Effect of Gefapixant (MK-7264/AF-219) on Cough Reflex Sensitivity in Healthy and Chronic Cough Participants (MK-7264-014)
The primary objective of this study was to assess the effect of a single dose of gefapixant 100 mg on cough reflex sensitivity to various challenge agents (capsaicin, citric acid, adenosine triphosphate [ATP], and distilled…
- Trial name
- NCT02476890
- Testing
- Gefapixant 100 mg
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Afferent Pharmaceuticals, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Refractory Chronic Cough
Effect of Gefapixant (AF-219/MK-7264) on Cough Reflex Sensitivity (MK-7264-015)
The primary objective of this double-blind crossover study is to assess the effect of single doses of 50 mg and 300 mg gefapixant (AF-219/MK-7264) on cough reflex sensitivity to capsaicin in both healthy participants and…
- Trial name
- NCT02397460
- Testing
- Gefapixant
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Afferent Pharmaceuticals, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Refractory/Unexplained Chronic Cough
ATP Level and Cough Sensitivity to ATP in Subjects With Refractory/Unexplained Chronic Cough
This is a cross-sectional study to investigate ATP level in induced sputum and cough sensitivity to ATP in subjects with refractory/unexplained chronic cough.
- Trial name
- NCT05265871
- Where
- China
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- Kefang Lai
Cough
Functional Magnetic Resonance Imaging of ATP Cough in Chronic Cough Patients
Persistent cough is a distressing symptom for people with respiratory disorders. Patients also often experience an ongoing urge-to-cough that prompts coughing, and which fails to resolve the sensation.
- Trial name
- NCT03722849
- Testing
- Adenosine Triphosphate, Capsaicin, Functional Brain Imaging
- Where
- Australia
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Stuart Mazzone