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Showing 1–8 of 8 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: PF-04447943 Clear all
Completed Phase 2 Interventional Results available

A Study Of PF-04447943 Compared To Placebo In Subjects With Mild To Moderate Alzheimer's Disease

NCT00930059
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
PF-04447943, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
55 Years to 85 Years
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
22
States / cities
Northport, Alabama • Costa Mesa, California • Glendale, California + 18 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2020 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Safety, Tolerability, Plasma Drug Levels, and Cognitive Response Following Multiple Doses of a Drug in Healthy Elderly Participants.

NCT00832052
View directory record Official record
Conditions
Healthy, Elderly
Interventions
PF-04447943
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 85 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 11, 2009 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Results available

Safety, Tolerability, Pharmacokinetics, And Pharmacodynamics Study Of PF-04447943, Co-Administered With And Without Hydroxyurea, In Subjects With Stable Sickle Cell Disease

NCT02114203
View directory record Official record
Conditions
Phase 1 Sickle Cell
Interventions
PDE9i, placebo for PDE9i
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
12
States / cities
Chicago, Illinois • Boston, Massachusetts • Brooklyn, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 13, 2017 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Of Single Ascending And Multiple Doses Of PF-04447943 In Japanese Subjects.

NCT00959803
View directory record Official record
Conditions
Healthy
Interventions
PF-04447943, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 85 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Glendale, California
Source: ClinicalTrials.gov public record
Updated Dec 6, 2009 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Results available

A Brief Study To Evaluate The Safety, Tolerability, And Blood Levels Of Multiple Doses Of PF-044467943 Or Placebo In Combination With Donepezil In Subjects With Mild To Moderate Alzheimer's Disease

NCT00988598
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
PF-04447943, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
55 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
3
States / cities
Glendale, California • Gainesville, Florida • Hallandale, Florida
Source: ClinicalTrials.gov public record
Updated Nov 18, 2020 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study To Evaluate The Effect Of PF-04447943 On Qtc Interval In Healthy Adult Subjects

NCT02785770
View directory record Official record
Conditions
Healthy
Interventions
PF-04447943, Placebo, Moxifloxacin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 27, 2018 · Synced Sep 6, 2026, 5:43 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Phase I, Multiple Dose Study of PF-04447943 in Healthy Elderly Volunteers

NCT00736528
View directory record Official record
Conditions
Healthy, Elderly
Interventions
PF-04447943, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 24, 2009 · Synced Sep 6, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Evaluate Whether Food Affects The Plasma Drug Levels Of A 35 mg Single Dose Of PF-04447943 Taken Orally In Healthy Adult Participants

NCT00886093
View directory record Official record
Conditions
Healthy
Interventions
PF-04447943
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 1, 2009 · Synced Sep 6, 2026, 5:43 PM EDT