Skip to content

C4391002 - A PHASE 1B/2, OPEN-LABEL, MULTICENTER, DOSE ESCALATION AND DOSE EXPANSION STUDY TO EVALUATE THE SAFETY, TOLERABILITY, PHARMACOKINETICS, PHARMACODYNAMICS, AND ANTITUMOR ACTIVITY OF PF-07220060 IN COMBINATION WITH PF-07104091 PLUS ENDOCRINE THERAPY IN PARTICIPANTS WITH ADVANCED SOLID TUMORS

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-509504-15-00
Acronym
C4391002
Enrollment
49
Registered
2024-06-10
Start date
2023-03-20
Completion date
Unknown
Last updated
2025-07-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HR-positive HER2-negative metastatic/advanced BC

Brief summary

Part 1: First cycle DLTs., Part 1: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0) timing, seriousness, and relationship to study intervention., Part 1: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing., Part 1: Vital sign abnormalities., Part 1: Heart rate corrected QT interval (eg, QTcF)., Part 2: First cycle DLTs (for the safety run-in)., Part 2: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), timing, seriousness, and relationship to study treatment., Part 2: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0, and timing.

Detailed description

Part 1: PK parameters of PF-07220060 and PF-07104091: • Single dose (PF-07104091) - Cmax, Tmax, AUClast, and as data permit, AUCinf, CL/F, Vz/F, and t1/2. • Multiple Dose (PF-07220060 & PF-07104091; assuming steady state is achieved) - Css,max, Tss,max, AUCss,τ, Css,min, CLss/F, and as data permit, Vss/F, t1/2, and Rac (AUCss,τ/AUCsd,τ) for PF-07104091., Part 1: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0) timing, seriousness, and relationship to study intervention., Part 1: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing., Part 1: • ORR, as assessed using RECIST version 1.1., Part 1: TTE endpoints: eg, DoR, PFS, and TTP., Part 2: ORR and CBR as assessed using RECIST version 1.1., Part 2: TTE endpoints: DoR, PFS, and TTP., Part 2: Concentrations of PF-07220060 and PF-07104091 at selected time points.

Interventions

DRUGFULVESTRANT
DRUGLETROZOLE

Sponsors

Pfizer Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Part 1: First cycle DLTs., Part 1: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0) timing, seriousness, and relationship to study intervention., Part 1: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing., Part 1: Vital sign abnormalities., Part 1: Heart rate corrected QT interval (eg, QTcF)., Part 2: First cycle DLTs (for the safety run-in)., Part 2: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), timing, seriousness, and relationship to study treatment., Part 2: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0, and timing.

Secondary

MeasureTime frame
Part 1: PK parameters of PF-07220060 and PF-07104091: • Single dose (PF-07104091) - Cmax, Tmax, AUClast, and as data permit, AUCinf, CL/F, Vz/F, and t1/2. • Multiple Dose (PF-07220060 & PF-07104091; assuming steady state is achieved) - Css,max, Tss,max, AUCss,τ, Css,min, CLss/F, and as data permit, Vss/F, t1/2, and Rac (AUCss,τ/AUCsd,τ) for PF-07104091., Part 1: AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0) timing, seriousness, and relationship to study intervention., Part 1: Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing., Part 1: • ORR, as assessed using RECIST version 1.1., Part 1: TTE endpoints: eg, DoR, PFS, and TTP., Part 2: ORR and CBR as assessed using RECIST version 1.1., Part 2: TTE endpoints: DoR, PFS, and TTP., Part 2: Concentrations of PF-07220060 and PF-07104091 at selected time points.

Countries

Bulgaria, Czechia, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026