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PF-04455242

Phase 1

Bipolar Depression | Small molecule | Psychiatry |Pfizer, Inc.|Last Updated: Jan 7, 2010

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment42

FDA Designations

No designations recorded

Clinical trial landscape

PF-04455242 · 3 trials · 2 indications

Phase 1 3
NCT00988949Proof Of Mechanism Study To Determine Efficacy Of PF-04455242 In Blocking Spiradoline (PF-00345768) Stimulated Prolactin ReleaseBipolar Depression
COMPLETED24 Analytics
NCT00956956A Multiple Dose Study To Determine Safety, Tolerability And Pharmacokinetics Of PF-04455242 In Healthy Adult SubjectsHealthy
COMPLETED36 Analytics
NCT00938301A First In Human Study To Evaluate The Safety, Tolerability And Pharmacokinetics Of PF-04455242 In Single Rising Doses In Healthy Adult VolunteersBipolar Depression
COMPLETED18 Analytics
PHASE1COMPLETED
Proof Of Mechanism Study To Determine Efficacy Of PF-04455242 In Blocking Spiradoline (PF-00345768) Stimulated Prolactin Release
Bipolar DepressionUnlock trial analytics
PHASE1COMPLETED
A Multiple Dose Study To Determine Safety, Tolerability And Pharmacokinetics Of PF-04455242 In Healthy Adult Subjects
HealthyUnlock trial analytics
PHASE1COMPLETED
A First In Human Study To Evaluate The Safety, Tolerability And Pharmacokinetics Of PF-04455242 In Single Rising Doses In Healthy Adult Volunteers
Bipolar DepressionUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline area under the serum PRL concentration time curve from 0 to 120 minutes after intramuscular administration of PF 00345768 (spiradoline).
1 week
Safety and tolerability of multiple ascending doses of PF 04455242 administered orally to healthy adult subjects.
10 days
Plasma and urine pharmacokinetics of multiple ascending doses of PF 04455242 administered orally to healthy adult subjects.
10 days
Safety and tolerability of single doses will include neurological assessment, vital signs and adverse event reporting during inpatient stay.
Daily
Physical exam
Screening, End of Trial (EOT), and Follow Up (F/U)
Clinical safety laboratory results
Screening, Day 0 (D0), D2, F/U
12-lead ECGs
Screening, D1, D2, F/U
Maximum plasma concentration (Cmax), time to reach maximum concentration (Tmax), area under the concentration-time curve (AUC) and terminal half-life (t1/2) .
0 hr (predose) then 0.5-1 hr for the next 12 hrs postdose on D1, then 24, 36, 48, & 72 hrs postdose

Secondary Endpoints

Change from baseline to peak of serum PRL concentration.
1 week
Change from baseline to peak of plasma ACTH concentration.
1 week
Change from baseline area under the plasma ACTH concentration time curve from 0-120 minutes after intramuscular administration of PF 00345768 (spiradoline).
1 week
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
PF-04455242 18 mgEXPERIMENTALSubjects in this arm will receive a single 18 mg oral dose of PF-04455242 prior to spiradoline challenge
PlaceboPLACEBO_COMPARATORSubjects in this arm will receive placebo prior to spiradoline challenge.
PF-04455242 30 mgEXPERIMENTALSubjects in this arm will receive a single 30 mg oral dose of PF-04455242 prior to spiradoline challenge.
PF-04455242 treatmentEXPERIMENTAL -
TreatmentACTIVE_COMPARATOR2 cohorts will recieve single rising doses of PF-04455242 or placebo in a cross-over fashion.

Interventions

NameTypeDescription
PF-04455242DRUGSingle oral 18 mg dose of PF-04455242.
spiradolineDRUGSpiradoline 3.2 mcg/kg to be administered intramuscularly once on the morning of the spiradoline challenge day.
PlaceboOTHEROral placebo.
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Eligibility Criteria

Age Range21 Years to 55 Years
SexMALE
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy male subjects between the ages of 21 and 55 years, inclusive (Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including blood pressure and pulse rate measurement, 12 lead ECG and clinical l...

Countries:SingaporeUnited States
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Frequently asked questions about PF-04455242

What is PF-04455242 used for?

PF-04455242 is an investigational small molecule being studied for bipolar depression. It has been evaluated in Phase 1 clinical trials in healthy volunteers and in subjects with bipolar depression. The drug is not approved and remains in clinical development.

Who makes PF-04455242?

PF-04455242 is being developed by Pfizer, Inc. (NYSE: PFE). The company has sponsored Phase 1 clinical trials of the drug in healthy volunteers and in subjects with bipolar depression.

What phase is PF-04455242 in?

PF-04455242 is in Phase 1 clinical development. It has completed two Phase 1 trials, and no active trials are currently listed. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is PF-04455242 in?

PF-04455242 has been studied in three completed Phase 1 trials: NCT00938301, a single rising dose study in healthy adults; NCT00956956, a multiple dose study in healthy adults; and NCT00988949, a proof of mechanism study in healthy males. All trials are completed.

Is PF-04455242 the same as PF-00345768?

No, PF-04455242 is not the same as PF-00345768. In clinical trial NCT00988949, PF-00345768 (spiradoline) was used as a challenge agent to test whether PF-04455242 could block its effects on prolactin release. They are distinct compounds.