Dose Range Finding Study of Fedovapagon in Men With Nocturia

Phase 2

Completed

Interventions: Drug: Placebo ( sugar pill)
Drug: fedovapagon 1 mg
Drug: fedovapagon 2 mg
Drug: fedovapagon 4 mg

Brief Summary: The purpose of this study is to determine the dose level(s) of fedovapagon which result in a decrease in the mean nocturnal void frequency.

Detailed Description: Fedovapagon is a selective vasopressin V2 receptor (V2 receptor) agonist that is being developed for the treatment of Nocturia.

The antidiuretic effect of V2 receptor stimulation in the kidneys is well established through the use of the peptide agonist, desmopressin, which shows clinical benefit in diabetes insipidus, primary nocturnal enuresis and Nocturia.

Nocturia, defined as the complaint that the individual has to wake at night one or more times to void, is a common complaint and shows an age-dependent increase in both prevalence and severity (number of Nocturnal Voids). It is the most bothersome symptom of benign prostatic hypertrophy (BPH) and has been linked to an age-dependent loss in circadian release of endogenous nocturnal vasopressin and consequent over production of urine at night (Nocturnal Polyuria).

The purpose of this Phase IIb study is to determine the efficacy of different doses of fedovapagon in reducing the number of times subjects with Nocturia void during the night together with other parameters including increasing the time between going to bed and waking to first void. By establishing the effective doses of fedovapagon on these clinical endpoints, the data from this study will determine the most appropriate dose(s) of fedovapagon for the treatment of Nocturia to be taken forward into further studies.

Recruitment & Eligibility

Inclusion Criteria

Males aged 55 or over
History and/ or symptoms of Nocturia (2 - 5 voids per night)
Generally well (concomitant illness / conditions well controlled)
Serum sodium, potassium, chloride and bicarbonate within normal limits
No clinically significant abnormalities in other laboratory parameters, urinalysis, electrocardiogram (ECG) or physical examination
Prostate specific antigen (PSA) within the normal range or not considered clinically significant
Ability to comply with the requirements of the study
Written informed consent.

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
sugar pill	Placebo ( sugar pill)	Once daily oral dose of placebo for 12 weeks
fedovapagon 1 mg	fedovapagon 1 mg	Once daily oral dose of 1 mg fedovapagon for 12 weeks
fedovapagon 2 mg	fedovapagon 2 mg	Once daily oral dose of 2 mg fedovapagon for 12 weeks
fedovapagon 4 mg	fedovapagon 4 mg	Once daily oral dose of 4 mg fedovapagon for 12 weeks

Primary Outcome Measures

Name	Time	Method
Change in the mean nocturnal urine voids	12 weeks

Secondary Outcome Measures

Name	Time	Method
Change in the mean nocturnal urine voids	4 weeks
Change in the mean time to first nocturnal void	12 weeks
Change in Nocturia-related quality of life (N-QOL)	12 weeks