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RecruitingInterventionalPhase 1

A PHASE 1A/B OPEN-LABEL MASTER STUDY OF PF-07799544 AS A SINGLE-AGENT AND IN COMBINATION WITH OTHER TARGETED AGENTS IN PARTICIPANTS WITH BRAF-MUTANT MELANOMA AND OTHER SOLID TUMORS

NCT ID: NCT05538130Sponsor: PfizerLast updated: 2026-06-10

Summary

The purpose of this clinical trial is to learn the safety and effects of the study medicine (PF-07799544) alone or in combination as a potential cancer treatment for adults with advanced solid tumors. The study will be conducted in two parts: PF-07799544 as a single agent (Phase 1a) and PF-07799544 in combination with another study medicine called PF-07799933 (Phase 1b). Phase 1a is no longer open for enrollment. In Phase1b (noted as "this study"), we are seeking participants who have: * a solid tumor which is metastatic or recurrent (excluding colorectal cancer) * tumor with the mutation (abnormal gene) called "BRAF V600" * received required prior treatment for cancer per cohort assigned. All participants in this study will receive both study medicines. Both study medicines are tablets that are taken by mouth at home twice a day. Participants will receive study medicines until their cancer is no longer responding, unacceptable side effects, or 2 years. Participants may continue to receive study therapy beyond 2 years. We will examine the experiences of people receiving the study medicines. This will help us determine if the study medicines are safe and effective.

Arms & interventions

  • DrugPF-07799544

    Tablet

  • DrugPF-07799933

    Tablet

Outcome measures

Primary

  • Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with dose limiting toxicities (DLTs)

    DLTs will be evaluated during the first cycle (21 days) as a single agent (phase 1a monotherapy) or in combination with other agents (phase 1b dose escalation)

    Time frame: Cycle 1 (21 days)

  • Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with treatment-emergent adverse events (AEs)

    AEs as characterized by type, frequency, severity, timing, seriousness, and relationship to study therapy

    Time frame: Baseline to 28 days after last dose of study medication

  • Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in laboratory abnormalities

    Laboratory abnormalities as characterized by type, frequency, severity, and timing.

    Time frame: Baseline to 28 days after last dose of study treatment

  • Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in vital sign abnormalities

    Vital sign abnormalities as characterized by type, frequency, severity, and timing.

    Time frame: Baseline to 28 days after last dose of study treatment

  • Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in physical exam abnormalities

    Physical exam abnormalities as as graded by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

    Time frame: Baseline to 28 days after last dose of study treatment

  • Phase 1b Dose Expansion: Overall response rate (ORR)

    Response will be evaluated via radiographical tumor assessments by RECIST v1.1 for solid tumors or RANO for primary brain tumors

    Time frame: Baseline to 2 years

Secondary

  • Phase 1a monotherapy and Phase 1b combination dose escalation: ORR

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Number of participants with treatment-emergent adverse events (AEs)

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Number of participants with clinically significant change from baseline in vital sign abnormalities

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Number of participants with clinically significant change from baseline in laboratory abnormalities

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Duration of Response (Overall and in CNS)

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Intracranial response

    Time frame: Baseline to 2 years

  • Phase 1b Dose Expansion: Progression Free Survival (PFS)

    Time frame: Baseline to 2 years

  • PK Parameters: Maximum Observed Concentration (Cmax)

    Time frame: Baseline to 2 years

  • PK Parameters: Maximum Plasma Concentration (Tmax)

    Time frame: Baseline to 2 years

  • PK Parameters: Area Under Curve (AUC)

    Time frame: Baseline to 2 years

  • PK Parameters: terminal elimination half-life (t½)

    Time frame: Baseline to 2 years

  • PK Parameters: Apparent Oral Clearance (CL/F)

    Time frame: Baseline to 2 years

  • PK Parameters: Apparent Volume of Distribution (Vz/F)

    Time frame: Baseline to 2 years

Eligibility criteria

Sex: AllAge: 16 Years and olderHealthy volunteers: No
Phase 1b Inclusion Criteria: * Diagnosis of advanced/metastatic solid tumor (excluding colorectal cancer) * Measurable disease by RECIST version 1.1 * Evidence of a BRAF V600 mutation * Prior therapy per tumor cohort * Adequate organ function per protocol Phase 1b Exclusion Criteria: * Other active malignancy within 3 years * Presence of leptomeningeal disease * History or current evidence of retinal vein occlusion (RVO) or history of retinal degenerative disease * Concurrent neuromuscular disorder associated with elevated creatine kinase (CK) * Active gastrointestinal disease as defined per protocol * History of interstitial lung disease as defined per protocol

Study locations (58)

The Kirklin Clinic of UAB Hospital

Birmingham, Alabama, 35233

Recruiting

The University of Alabama at Birmingham

Birmingham, Alabama, 35249

Recruiting

University of Alabama at Birmingham - Phase I Clinical Trials Unit

Birmingham, Alabama, 35249

Recruiting

Highlands Oncology Group, PA

Fayetteville, Arkansas, 72703

Recruiting

Highlands Oncology Group, PA

Rogers, Arkansas, 72758

Recruiting

Highlands Oncology Group, PA

Springdale, Arkansas, 72762

Recruiting

The Angeles Clinic and Research Institute- A Cedars-Sinai Affiliate

Los Angeles, California, 90025

Recruiting

Keck Hospital of USC

Los Angeles, California, 90033

Not Yet Recruiting

Los Angeles General Medical Center

Los Angeles, California, 90033

Not Yet Recruiting

USC/Norris Comprehensive Cancer Center

Los Angeles, California, 90033

Not Yet Recruiting

Keck Medical Center of USC Pasadena

Pasadena, California, 91105

Not Yet Recruiting

UCSF Helen Diller Family Comprehensive Cancer Center

San Francisco, California, 94143

Recruiting

UCSF Helen Diller Medical Center at Parnassus Heights

San Francisco, California, 94143

Recruiting

UCSF Medical Center, Investigational Pharmacy

San Francisco, California, 94158

Recruiting

The Angeles Clinic and Research Institue, A Cedars-Sinai Affiliate (Emergency Back-up only)

Santa Monica, California, 90404

Recruiting

Moffitt Cancer Center, Richard M. Shulze Family Foundation Outpatient Center

Tampa, Florida, 33612

Recruiting

Moffitt Cancer Center

Tampa, Florida, 33612

Recruiting

Moffitt McKinley Hospital

Tampa, Florida, 33612

Recruiting

Ochsner Clinic Foundation

New Orleans, Louisiana, 70121

Not Yet Recruiting

Massachusetts General Hospital

Boston, Massachusetts, 02114

Recruiting

Ophthalmic Consultants of Boston Inc (OCB)

Boston, Massachusetts, 02114

Recruiting

Brigham and Women's Hospital

Boston, Massachusetts, 02115

Recruiting

Dana-Farber Cancer Institute

Boston, Massachusetts, 02215

Recruiting

Mass General Waltham

Waltham, Massachusetts, 02451

Recruiting

Brigitte Harris Cancer Pavilion

Detroit, Michigan, 48202

Recruiting

Henry Ford Hospital

Detroit, Michigan, 48202

Recruiting

HealthPartners Frauenshuh Cancer Center

Saint Louis Park, Minnesota, 55426

Not Yet Recruiting

Methodist Hospital Inpatient Pharmacy

Saint Louis Park, Minnesota, 55426

Not Yet Recruiting

HealthPartners Cancer Center at regions Hospital

Saint Paul, Minnesota, 55101

Not Yet Recruiting

Regions Hospital Pharmacy

Saint Paul, Minnesota, 55101

Not Yet Recruiting

MSK Basking Ridge.

Basking Ridge, New Jersey, 07920

Recruiting

MSK Monmouth.

Middletown, New Jersey, 07748

Recruiting

MSK Bergen.

Montvale, New Jersey, 07645

Recruiting

Optum Medical Care, PC

Brewster, New York, 10509

Not Yet Recruiting

MSK Commack.

Commack, New York, 11725

Recruiting

MSK Westchester.

Harrison, New York, 10604

Recruiting

Optum Medical Care, PC

Mount Kisco, New York, 10549

Not Yet Recruiting

Laura & Isaac Perlmutter Cancer Center - NYU ACC

New York, New York, 10016

Recruiting

Laura & Isaac Perlmutter Cancer Center at NYU Langone Health

New York, New York, 10016

Recruiting

NYU Langone Faculty Group Practice

New York, New York, 10016

Recruiting

NYU Langone Medical Center (Tisch Hospital)

New York, New York, 10016

Recruiting

Memorial Sloan Kettering Cancer Center 53rd street.

New York, New York, 10022

Recruiting

Columbia University Irving Medical Center

New York, New York, 10032

Recruiting

Columbia University Medical Center - Neurological Institute of New York

New York, New York, 10032

Recruiting

CUIMC Research Pharmacy

New York, New York, 10032

Recruiting

Memorial Sloan Kettering Cancer Center - Main Campus

New York, New York, 10065

Recruiting

MSK Nassau.

Uniondale, New York, 11553

Recruiting

Cleveland Clinic Taussig Cancer Center Investigational Pharmacy

Cleveland, Ohio, 44106

Recruiting

Cleveland Clinic Taussig Cancer Center

Cleveland, Ohio, 44195

Recruiting

Providence Cancer Institute Franz Clinic

Portland, Oregon, 97213

Recruiting

Providence Portland Medical Center

Portland, Oregon, 97213

Recruiting

UPMC Hillman Cancer Center

Pittsburgh, Pennsylvania, 15232

Not Yet Recruiting

SCRI Oncology Partners

Nashville, Tennessee, 37203

Recruiting

University of Texas MD Anderson Cancer Center

Houston, Texas, 77030

Recruiting

Fred Hutchinson Cancer Center

Seattle, Washington, 98109

Recruiting

University of Washington Medical Center

Seattle, Washington, 98195

Recruiting

University of Wisconsin Carbone Cancer Center - Eastpark Medical Center

Madison, Wisconsin, 53718

Recruiting

University of Wisconsin Carbone Cancer Center - University Hospital

Madison, Wisconsin, 53792

Recruiting
A Study to Learn About the Study Medicine Called PF-07799544 as Monotherapy or in Combination in People With Advanced Solid Tumors | Cancerify