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atirmociclib

Phase 1

Healthy Volunteer | Small molecule | Other |Pfizer, Inc.|Last Updated: Nov 28, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLED
Total Trials1
Total Enrollment72
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07215078Study About Whether Atirmociclib/PF-07220060 Proportionally Increases Exposure as Dose Increases in Healthy ParticipantsPHASE1 RECRUITING 72Oct 8, 2025Jun 26, 2026Nov 28, 20251 United States
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Study Endpoints
Primary Endpoints
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUCinf)
1 hour prior to atirmociclib dosing, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96 and 120 hours post-dose

Dose-normalized plasma AUCinf and Cmax of atirmociclib for each cohort (AUClast if AUCinf cannot be estimated)

Maximum Observed Plasma Concentration (Cmax)
1 hour prior to atirmociclib dosing, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96 and 120 hours post-dose
Secondary Endpoints
Number of Participants With Adverse Events (AEs) by Seriousness and Relationship to Treatment
Period 1: Days 1-6; minimum 7-day interval between two doses; Period 2: Day 1-35
Number of Participants With Laboratory Abnormalities
Period 1: Days 1-6; minimum 7-day interval between two doses; Period 2: Day 1-35
Number of Participants With Abnormalities in Physical Examination
Period 1: Days 1-6; minimum 7-day interval between two doses; Period 2: Day 1-35
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort 1EXPERIMENTALIn Period 1 Day 1, participants from Sequence AB and BA will receive Dose A and Dose B atirmociclib higher drug load IR MST tablet, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Cohort 2EXPERIMENTALIn Period 1 Day 1, participants from Sequence AC and CA will receive Dose A and Dose C atirmociclib higher drug load IR MST tablet, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Cohort 3EXPERIMENTALIn Period 1 Day 1, participants from Sequence BC and CB will receive Dose B and Dose C atirmociclib higher drug load IR MST tablets, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Cohort 4EXPERIMENTALIn Period 1 Day 1, participants from Sequence AD and DA will receive Dose A and Dose D atirmociclib higher drug load IR MST tablet, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Cohort 5EXPERIMENTALIn Period 1 Day 1, participants from Sequence BD and DB will receive Dose B and Dose D atirmociclib higher drug load IR MST tablets, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Cohort 6EXPERIMENTALIn Period 1 Day 1, participants from Sequence CD and DC will receive Dose C and Dose D atirmociclib higher drug load IR MST tablets, respectively. In Period 2 Day 1, the participants from two sequences in the same cohort will shuffle the treatment.
Interventions
NameTypeDescription
atirmociclib (PF-07220060)DRUGOpen-label, two-period, cross-over study to evaluate dose proportionality of atirmociclib (PF-07220060) pharmacokinetics when administered under fed condition to healthy participants
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion: * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, and laboratory tests. * Body mass Index (BMI) of 17.5-30.5 kg/m2; and a total body weight \>50 kg (110 lb.). Exclusion: * Evidence or history of clinically signif...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07215078primaryCompletionDate: changed
LOWMay 24, 2026NCT07215078studyFirstPostDate: changed