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PF-07799933

Phase 1

Melanoma | Small molecule | Oncology |Pfizer, Inc.|Last Updated: Jun 5, 2026

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
CONTROLLEDBiomarker
Total Trials1
Total Enrollment267
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05355701A Study to Learn About the Study Medicine Called PF-07799933 in People With Advanced Solid Tumors With BRAF Alterations.PHASE1 RECRUITING 267Jul 5, 2022Oct 25, 2029Jun 5, 202640 United States, Canada +1
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Study Endpoints
Primary Endpoints
Number of participants with dose limiting toxicities (DLTs) (Part 1 and Part 2)
Cycle 1 (21 days)

DLTs will be evaluated during the first cycle (21 days) as both a single agent or in combination with binimetinib or cetuximab

Number of participants with treatment-emergent adverse events (AEs) (Part 1 and Part 2)
Baseline to 28 days after last dose of study medication

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

Number of participants with clinically significant change from baseline in laboratory abnormalities (Part 1 and Part 2)
Baseline to 28 days after last dose of study treatment

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

Number of participants with clinically significant change from baseline in vital sign abnormalities (Part 1 and Part 2)
Baseline to 28 days after last dose of study treatment

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

Dose interruptions due to AEs (Part 1 and Part 2)
Baseline to 2 years

Incidence of dose interruptions due to AEs

Dose dose modifications due to AEs (Part 1 and Part 2)
Baseline to 2 years

Incidence of dose modifications due to AEs

Discontinuations due to AEs (Part 1 and Part 2)
Baseline to 2 years

Incidence of discontinuations due to AEs

Overall response rate (ORR) (Part 3)
Baseline to 2 years

Response will be evaluated via radiographical tumor assessments by Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1)

Number of participants with clinically significant physical exam abnormalities (Part 1 and Part 2)
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

Secondary Endpoints
Part 1 and Part 2: ORR
Baseline to 2 years
Part 1/2/3: Intracranial response
Baseline to 2 years
Part 1 and Part 2: Duration of response
Baseline to 2 years
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Monotherapy dose escalation (Part 1)EXPERIMENTALParticipants will receive PF-07799933
Combination dose escalation (Part 2)EXPERIMENTALParticipants will receive PF-07799933 in combination with binimetinib or cetuximab
Dose expansion (Part 3) - Tumor and mutation specific Cohort 1EXPERIMENTALParticipants will receive PF-07799933
Dose expansion (Part 3) - Tumor and mutation specific Cohort 2EXPERIMENTALParticipants will receive PF-07799933
Dose expansion (Part 3) - Tumor and mutation specific Cohort 3EXPERIMENTALParticipants will receive PF-07799933
Dose expansion (Part 3) - Tumor and mutation specific Cohort 4EXPERIMENTALParticipants will receive PF-07799933 in combination with cetuximab
Dose expansion (Part 3) - Tumor and mutation specific Cohort 5EXPERIMENTALParticipants will receive PF-07799933 in combination with cetuximab and mFOLFOX6 regimen
Dose expansion (Part 3) - Tumor and mutation specific Cohort 6EXPERIMENTALParticipants will receive PF-07799933
Dose expansion (Part 3) - Tumor and mutation specific Cohort 7EXPERIMENTALParticipants will receive PF-07799933
Interventions
NameTypeDescription
PF-07799933DRUGTablet
binimetinibDRUGTablet
cetuximabBIOLOGICALInjection for intravenous use
midazolamDRUGsyrup
fluorouracilDRUGInjection for intravenous use
leucovorinDRUGInjection for intravenous use
oxaliplatinDRUGInjection for intravenous use
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Eligibility Criteria
Age Range16 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites40

This study is seeking participants who meet the following key eligibility criteria: Inclusion Criteria: * Diagnosis of advanced/metastatic solid tumor including primary brain tumor. * Qualifying BRAF alteration (V600 or non-V600 Class II/Class III BRAF alteration), in tumor tissue and/or blood (ie...

Countries:United StatesCanadaIsrael
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Competitive Landscape -Melanoma 127 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK6PHASE3Intismeran autogene, Pembrolizumab, pembrolizumab, Pembrolizumab Berahyaluronidase alfa
Bristol-Myers Squibb CompanyBMY7PHASE3Nivolumab, Nivolumab + Relatlimab, rHuPH20, Relatlimab, relatlimab+nivolumab
Regeneron Pharmaceuticals, Inc.REGN8PHASE3Fianlimab, Cemiplimab, Pembrolizumab, fianlimab, cemiplimab
Pfizer Inc.PFE4PHASE3Encorafenib, Binimetinib, Pembrolizumab, PF-08046049, PF-07799933
IDEAYA Biosciences, Inc.IDYA4PHASE3Darovasertib, IDE196, Crizotinib, Pembrolizumab, Ipilimumab
Iovance Biotherapeutics IncIOVA6PHASE3Lifileucel plus Pembrolizumab, Pembrolizumab with Optional Crossover Period, Lifileucel, LN-145/LN-144, Cyclophosphamide
Replimune Group, Inc.REPL5PHASE3Vusolimogene Oderparepvec, Nivolumab, Pembrolizumab, Single-agent chemotherapy, RP1
Amgen Inc.AMGN1PHASE3ABP 206, Nivolumab
Immunocore Holdings Plc Shs Sponsored American Depositary Shares Repr 1 ShIMCR3PHASE3Tebentafusp, Brenetafusp, Nivolumab
Immatics N.V.IMTX2PHASE3IMA203, nivolumab plus relatlimab, lifileucel, pembrolizumab, ipilimumab
Aura Biosciences IncAURA4PHASE3Bel-sar
Novartis AG Sponsored ADRNVS6PHASE2LXH254, LTT462, Trametinib, Ribociclib, DYP688
IO Biotech, Inc.IOBT2PHASE3IO102-IO103, Pembrolizumab, Pembrolizumab KEYTRUDA
Erasca, Inc.ERAS1PHASE3Naporafenib, Dacarbazine, Temozolomide, Trametinib
AstraZeneca PLCAZN3PHASE2Ceralasertib, Durvalumab, AZD6750, rilvegostomig, Trastuzumab deruxtecan
Eikon Therapeutics, Inc.EIKN2PHASE2EIK1001, Pembrolizumab, Association atezolizumab + BDB001 + RT
Moderna, Inc.MRNA1PHASE2mRNA-4157, Pembrolizumab
Genmab A/S Sponsored ADRGMAB2PHASE2Acasunlimab, Pembrolizumab, GEN1042, Cisplatin, Carboplatin
Agenus Inc.AGEN1PHASE2Botensilimab, Balstilimab
ImmunityBio IncIBRX1PHASE2N-803 + Pembrolizumab
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Recent Changes (Last 90 Days)
LOWJun 5, 2026NCT05355701primaryCompletionDate: changed
LOWJun 5, 2026NCT05355701primaryCompletionDate: changed
LOWJun 5, 2026NCT05355701primaryCompletionDate: changed
LOWJun 5, 2026NCT05355701primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT05355701primaryCompletionDate: changed
LOWMay 24, 2026NCT05355701studyFirstPostDate: changed