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PCS6422 and capecitabine

Phase 2

Breast Cancer | Small molecule | Oncology |Processa Pharmaceuticals, Inc.|Last Updated: Jun 19, 2025

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
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment90
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06568692A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast CancerPHASE2 RECRUITING 90Oct 2, 2024Oct 1, 2026Jun 19, 202513 United States
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Study Endpoints
Primary Endpoints
Evaluation of Objective Response Rate (ORR)
Up to 24 weeks post End of Treatment (EoT)

The proportion of patients who achieved a confirmed complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1)

Number of patients with adverse events (AEs)
During treatment, an average of 8 months

Frequency, duration, and severity of AEs across treatment groups

Secondary Endpoints
Evaluation of Disease Control Rate (DCR)
Up to 24 weeks post End of Treatment (EoT)
Evaluation of Duration of Response (DOR)
Up to 24 weeks post End of Treatment (EoT)
Evaluation of Time to Response (TTR)
Every 12 weeks during treatment
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
PCS6422 40 mg + Capecitabine 300 mgEXPERIMENTALFixed single dose of PCS6422 administered with Capecitabine 150 mg BID over 7 days
PCS6422 40 mg + Capecitabine 450 mg or 150 mgEXPERIMENTALFixed single dose of PCS6422 administered with Capecitabine 225 mg or 75 mg BID over 7 days
Capecitabine 2000 mg/m2ACTIVE_COMPARATORStandard capecitabine dose at 1000 mg/m2 BID
Interventions
NameTypeDescription
PCS6422 and capecitabineDRUGPCS6422 is an experimental drug that, when combined with capecitabine, may make the immune response more active against cancer.
CapecitabineDRUGCommercially available capecitabine is a commonly used oral fluoropyrimidine.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: 1. Aged ≥18 years at Screening 2. Diagnosis of histologically confirmed breast cancer that is unresectable. The following subsets of breast cancer are included: 1. Patients with triple-negative breast cancer, advanced or metastatic 2. Patients with hormone receptor (HR) p...

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, 2026NCT06568692primaryCompletionDate: changed
LOWMay 24, 2026NCT06568692studyFirstPostDate: changed