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PF-08032562

Phase 1

Advanced Breast Cancer | Small molecule | Oncology |Pfizer, Inc.|Last Updated: May 8, 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 Enrollment260
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07318805A Study to Learn About the Study Medicine Called PF-08032562 in People With Advanced or Metastatic Solid TumorsPHASE1 RECRUITING 260Dec 23, 2025Apr 14, 2030May 8, 20269 United States
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Study Endpoints
Primary Endpoints
Part 1 (Dose Escalation): Number of participants with Dose-Limiting Toxicities (DLT)
Baseline up to 28 days

Any adverse events that are attributable to one, the other, or both study treatments, occurring in the DLT observation period are considered DLTs, excluding toxicities clearly due to underlying disease or extraneous causes.

Part 1 (Dose Escalation): Number of participants with laboratory abnormalities
From start of treatment up to 30 days after last dose or start of new anticancer therapy, whichever occurred first

Number of participants with laboratory test abnormalities.

Part 1 (Dose Escalation): Incidence of Adverse Events (AEs)
From start of treatment up to 30 days after last dose or start of new anticancer therapy, whichever occurred first

An adverse event (AE) was any untoward medical occurrence in a participant who received study medication without regard to possibility of causal relationship to it.

Part 2 (Dose Expansion): Objective Response Rate (ORR)
Baseline and every 8 to 12 weeks through time of confirmed disease progression, death, unacceptable toxicity, or through study completion (approximately 2 years)

ORR defined as per Response Evaluation Criteria in Solid Tumors (RECIST v1.1).

Secondary Endpoints
Part 1 & Part 2: Maximum Observed Serum Concentration (Cmax)
Baseline through end of Cycle 1 (each cycle is 28 days)
Part 1 & Part 2: Time to Reach Maximum Observed Serum Concentration (Tmax)
Baseline through end of Cycle 1 (each cycle is 28 days)
Part 1: Area Under the Curve (AUC) from Time Zero to Last Quantifiable Concentration (AUClast)
Baseline through end of Cycle 1 (each cycle is 28 days)
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1 Dose Escalation Cohort 1AEXPERIMENTALPF-08032562 monotherapy dose escalation for participants with advanced or metastatic BC or CRC, at different doses and/or schedules of the study drug
Part 1 Dose Escalation Cohort 1BEXPERIMENTALCombination (PF-08032562 + fulvestrant) dose escalation for participants with advanced or metastatic BC, at different doses and/or schedules of the study drug
Part 1 Dose Escalation Cohort 1CEXPERIMENTALCombination (PF-08032562 + cetuximab) dose escalation for participants with advanced or metastatic CRC, at different doses and/or schedules of the study drug
Part 1 Dose Escalation Cohort 1DEXPERIMENTALCombination (PF-08032562 + \[FOLFOX + bevacizumab\]) dose escalation for participants with advanced or metastatic CRC, at different doses and/or schedules of the study drug
Part 2 Dose Expansion Cohort 2AEXPERIMENTALCombination (PF-08032562 + fulvestrant) dose expansion for participants with advanced or metastatic BC, at different doses and/or schedules of the study drug
Part 2 Dose Expansion Cohort 2BEXPERIMENTALPF-08032562 monotherapy or combination (PF-08032562 + cetuximab) dose expansion for participants with advanced or metastatic CRC, at different doses and/or schedules of the study drug
Part 2 Dose Expansion Cohort 2CEXPERIMENTALCombination (PF-08032562 + \[FOLFOX + bevacizumab\]) dose expansion for participants with advanced or metastatic CRC, at different doses and/or schedules of the study drug
Interventions
NameTypeDescription
PF-08032562DRUGTaken by mouth (PO)
FulvestrantDRUGSelective Estrogen Receptor Degrader (SERD)
CetuximabDRUGMonoclonal antibody (EGFR inhibitor)
FluorouracilDRUGPart of FOLFOX chemotherapy regimen cytotoxic chemotherapy (antimetabolite and pyrimidine analog)
OxaliplatinDRUGPart of FOLFOX chemotherapy regimen platinum based compound (alkylating agent)
LeucovorinDRUGPart of FOLFOX chemotherapy regimen (folic acid analog)
BevacizumabDRUGMonoclonal antibody (VEG-F inhibitor)
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: * 18 years of age or older * Advanced or metastatic cancer of the breast or colon Part 1A: metastatic or advanced breast cancer or colorectal cancer for which no standard therapy is available Part 1B: metastatic or advanced breast cancer with disease progression after at least 1...

Countries:United States
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Competitive Landscape -Breast Cancer 408 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib, Trastuzumab Deruxtecan, Paclitaxel, Trastuzumab
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy, Imlunestrant, Tamoxifen, Anastrozole
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1, Capecitabine, Paclitaxel, Nab-paclitaxel
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib, Alpelisib, Fulvestrant, Trastuzumab, Pertuzumab
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant, PF-07220060, letrozole, abemaciclib
BeOne Medicines Ltd. Sponsored ADRONC6PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib, Arm A: Gedatolisib + Palbociclib + Fulvestrant
Relay Therapeutics, Inc.RLAY2PHASE3RLY-2608, Capivasertib, Fulvestrant, Palbociclib, Ribociclib
GSK plc Sponsored ADRGSK2PHASE3Niraparib
Greenwich LifeSciences, Inc.GLSI1PHASE3GLSI-100
Bristol-Myers Squibb CompanyBMY5PHASE2Iza-bren, Nab-paclitaxel, Paclitaxel, Capecitabine, Carboplatin
BriaCell Therapeutics CorpBCTX2PHASE3SV-BR-1-GM, Cyclophosphamide, Interferon infiltration of the inoculation site, Retifanlimab, Treatment of Physician's Choice
Incyte CorporationINCY4PHASE2Ruxolitinib, Capecitabine, Regorafenib, Pembrolizumab, Axatilimab
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam, Alisertib, Endocrine therapy
Immutep Ltd Sponsored ADRIMMP1PHASE2eftilagimod alpha, Paclitaxel
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07318805primaryCompletionDate: changed
LOWMay 24, 2026NCT07318805studyFirstPostDate: changed