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PF-07799544

Phase 1

Melanoma | Small molecule | Oncology |Pfizer, Inc.|Trials Updated: Sep 1, 2026

PF-07799544 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Sep 2022

PF-07799544 target and mechanism

Molecular targetBRAF
Target classGene
ModalitySmall molecule

Also known as Oral [14C] PF-07799544, Oral Unlabeled PF-07799544, Unlabeled PF-07799544, ARRY-134

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment148

FDA Designations

No designations recorded

PF-07799544 clinical trials

PF-07799544 · 1 trial · 13 indications

Phase 1 1
NCT05538130A Study to Learn About the Study Medicine Called PF-07799544 as Monotherapy or in Combination in People With Advanced Solid TumorsMelanoma
ACTIVE NOT_RECRUITING148 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Learn About the Study Medicine Called PF-07799544 as Monotherapy or in Combination in People With Advanced Solid Tumors
MelanomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with dose limiting toxicities (DLTs)
Cycle 1 (21 days)

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)

Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with treatment-emergent adverse events (AEs)
Baseline to 28 days after last dose of study medication

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

Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in laboratory abnormalities
Baseline to 28 days after last dose of study treatment

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

Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in vital sign abnormalities
Baseline to 28 days after last dose of study treatment

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

Phase 1a monotherapy and Phase 1b combination dose escalation: Number of participants with clinically significant change from baseline in physical exam abnormalities
Baseline to 28 days after last dose of study treatment

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

Phase 1b Dose Expansion: Overall response rate (ORR)
Baseline to 2 years

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

Secondary Endpoints

Phase 1a monotherapy and Phase 1b combination dose escalation: ORR
Baseline to 2 years
Phase 1b Dose Expansion: Number of participants with treatment-emergent adverse events (AEs)
Baseline to 2 years
Phase 1b Dose Expansion: Number of participants with clinically significant change from baseline in vital sign abnormalities
Baseline to 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1a Monotherapy Dose EscalationEXPERIMENTALParticipants will receive PF-07799544
Phase 1b Combination Dose EscalationEXPERIMENTALParticipants will receive PF-07799544 and PF-07799933
Phase 1b Combination Dose ExpansionEXPERIMENTALParticipants will receive PF-07799544 and PF-07799933

Interventions

NameTypeDescription
PF-07799544DRUGTablet
PF-07799933DRUGTablet
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Eligibility Criteria

Age Range16 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites66

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 acti...

Countries:United StatesAustraliaBrazilCanadaChinaIsraelJapan
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Recent Changes (Last 90 Days)

MEDIUMSep 1, 2026NCT05538130Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMSep 1, 2026NCT05538130Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWAug 14, 2026NCT05538130lastUpdatePostDate: changed
LOWAug 14, 2026NCT05538130lastUpdatePostDate: changed
LOWJul 29, 2026NCT05538130lastUpdatePostDate: changed
LOWJul 29, 2026NCT05538130lastUpdatePostDate: changed

Frequently asked questions about PF-07799544

What is PF-07799544?

PF-07799544 is an investigational oral small molecule being developed by Pfizer, Inc. (PFE) for the treatment of melanoma and other advanced solid tumors. It is a Phase 1 study medicine that has not been approved by the FDA and remains in clinical development.

What is PF-07799544 used for in melanoma?

PF-07799544 is being studied for use in melanoma as part of a Phase 1 program that also includes glioma, thyroid cancer, non-small cell lung cancer, and other advanced or metastatic solid tumors. It is investigational and has not been approved for any indication.

What does PF-07799544 target?

PF-07799544 targets BRAF, a gene that encodes a kinase in the MAPK signaling pathway. The Phase 1 study NCT05538130 is biomarker selected, meaning participants are enrolled based on tumor biomarker characteristics. The drug is administered as monotherapy or in combination.

Who is developing PF-07799544?

Pfizer, Inc. (ticker PFE) is developing PF-07799544. The company is running the Phase 1 study NCT05538130, which is evaluating the drug as monotherapy or in combination in people with advanced solid tumors.

What phase is PF-07799544 in?

PF-07799544 is in Phase 1 clinical development. It is investigational and has not been approved by the FDA. The single active trial, NCT05538130, is currently active but not recruiting, with an enrollment of 148 participants.

What clinical trials is PF-07799544 in?

PF-07799544 is being evaluated in the Phase 1 trial NCT05538130, titled a study of PF-07799544 as monotherapy or in combination in people with advanced solid tumors. The trial is active but not recruiting and spans the United States, Australia, Brazil, Canada, China, Israel, and Japan.

Is PF-07799544 the same as Oral [14C] PF-07799544?

Yes. PF-07799544 is also referred to as Oral [14C] PF-07799544, Oral Unlabeled PF-07799544, and Unlabeled PF-07799544. These names describe the labeled and unlabeled oral forms used in the clinical program, and all refer to the same investigational BRAF-targeted small molecule.