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PF-00446687

Phase 2

Erectile Dysfunction | Small molecule | Endocrine |Pfizer, Inc.|Trials Updated: Jan 31, 2019

PF-00446687 development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since May 2007

PF-00446687 target and mechanism

Molecular targetMC4R
Target classAgonist
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment62

FDA Designations

No designations recorded

PF-00446687 clinical trials

PF-00446687 · 2 trials · 2 indications

Phase 2 2
NCT00862888Study to Investigate Effect of a New Drug (PF-00446687) in Males Suffering From Erectile DysfunctionErectile Dysfunction
COMPLETED39 Analytics
NCT00479570Study To Investigate Effect Of A New Drug (PF-00446687) In Post-Menopausal Women Who Suffer From Sexual Dysfunction.Female Sexual Dysfunction
COMPLETED23 Analytics
PHASE2COMPLETED
Study to Investigate Effect of a New Drug (PF-00446687) in Males Suffering From Erectile Dysfunction
Erectile DysfunctionUnlock trial analytics
PHASE2COMPLETED
Study To Investigate Effect Of A New Drug (PF-00446687) In Post-Menopausal Women Who Suffer From Sexual Dysfunction.
Female Sexual DysfunctionUnlock trial analytics

Study Endpoints

Primary Endpoints

Assess effect of single doses of PF-00446687 on erectile function (using the Rigiscan+ device)
Day of dosing
Evaluate subjective self-assessment of sexual interest and desire by means of a questionnaire
Day of dosing
Diary of sexual activities
From day of dosing to 7 days post-dose
Assess effect of single doses of PF-00446687 on acute sexual arousal and sexual interest, using questionnaires, in post menopausal women suffering from Female Sexual Dysfunction. A diary will be completed for 7 days following the 3 dosing days.
From day of dosing until 7 days post-dose

Secondary Endpoints

PK assessment of PF-00446687 ad sildenafil
Day of dosing
Safety and toleration
Day of dosing to follow-up
Assess variability of response and repeatability of design between 2 similar doses
Comparison of response to be assessed until 7 days post-dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1; Study Period 1, 2, 3 or 4PLACEBO_COMPARATORCohort 1: Exploring two single doses of PF-00446687 200 mg as well as sildenafil 100mg and placebo (double dummy design)
Cohort 2; study periods 1, 2, 3 or 4PLACEBO_COMPARATORCohort 2: Exploring single doses of PF-00446687 20 mg - 175 mg. Subjects to receive two of 3 possible doses of PF-00446687 as well as a single dose of sildenafil 100mg and placebo (double dummy design).
Study period 1, 2 or 3EXPERIMENTAL -
Placebo Study period 1, 2 or 3PLACEBO_COMPARATOR -

Interventions

NameTypeDescription
PF-00446687DRUGSingle 200mg dose as an oral solution
PlaceboDRUGPlacebo for oral solution
SildenafilDRUGSingle oral dose 100 mg tablet
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Eligibility Criteria

Age Range18 Years to 65 Years
SexMALE
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: * Males aged 18-65 years who has given written informed consent to participate in the study and who suffers moderate to severe erectile dysfunction who has a current or recent successful response to treatment with phosphodiesterase type 5 inhibitors Exclusion Criteria: * Males...

Countries:NorwayUnited KingdomDenmarkSweden
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Frequently asked questions about PF-00446687

What is PF-00446687?

PF-00446687 is an investigational small molecule developed by Pfizer, Inc. (ticker PFE) for sexual dysfunction indications. It has been studied in Phase 2 clinical trials for erectile dysfunction in men and for female sexual dysfunction in post-menopausal women. It is not an approved medicine and remains in clinical development.

What is PF-00446687 used for?

PF-00446687 has been studied for two indications: erectile dysfunction in men and female sexual dysfunction in post-menopausal women. Both were evaluated in Phase 2 trials. The drug is investigational and has not been approved for any use.

What does PF-00446687 target?

PF-00446687 targets MC4R, the melanocortin 4 receptor, and acts as an agonist at that receptor. MC4R is a G protein-coupled receptor involved in melanocortin signaling. This receptor agonist mechanism is the basis for its investigation in erectile dysfunction and female sexual dysfunction.

Who makes PF-00446687?

PF-00446687 is developed by Pfizer, Inc., which trades under the ticker PFE. Pfizer sponsored the Phase 2 clinical studies of the compound in erectile dysfunction and female sexual dysfunction.

What phase is PF-00446687 in?

PF-00446687 is in Phase 2 development. Two Phase 2 trials have been completed, one in men with erectile dysfunction and one in post-menopausal women with sexual dysfunction. The drug is investigational and has not been approved by the FDA.

What clinical trials is PF-00446687 in?

PF-00446687 has been studied in two completed Phase 2 trials. NCT00862888 tested it in 39 men with erectile dysfunction in Norway and the United Kingdom. NCT00479570 tested it in 23 post-menopausal women with sexual dysfunction in Denmark, Norway, and Sweden. Both were randomized, double-blind, and placebo-controlled.