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PCS6422 and capecitabine

Phase 2

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

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Trial Design
RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment90
FDA Designations
No designations recorded
Clinical trial landscape

PCS6422 and capecitabine · 2 trials · 6 indications

Phase 2 1Phase 1 1
NCT06568692A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast CancerBreast Cancer
RECRUITING90 Analytics
PHASE2RECRUITING
A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast Cancer
Breast CancerUnlock trial analytics
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

Number of participants with dose limiting toxicities (DLT) and incidence of adverse events as assessed by CTCAE v5.0
~6 months

Frequency, duration, and severity of DLTs and adverse events (AEs)

Maximum Plasma Concentration (Cmax) of capecitabine
~14 days

To evaluate the Maximum Plasma Concentration (Cmax) of capecitabine

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
PCS6422 + CapecitabineEXPERIMENTALFixed dose of PCS6422 combined with various doses of Capecitabine administered in 14 day cycles
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 to 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 404 trials

Top 20 of 97 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant
BeOne Medicines Ltd. Sponsored ADRONC5PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Relay Therapeutics, Inc.RLAY2PHASE3RLY-2608, Capivasertib, Fulvestrant
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
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam
Immutep Ltd Sponsored ADRIMMP1PHASE2eftilagimod alpha, Paclitaxel
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06568692primaryCompletionDate: changed
LOWMay 24, 2026NCT06568692studyFirstPostDate: changed