A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast Cancer

NCT ID: NCT06568692

Last Updated: 2025-06-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-02

Study Completion Date

2026-10-31

Brief Summary

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This is an adaptive Phase 2, open-label, randomized, multi-center study evaluating up to 2 regimens of PCS6422 with capecitabine (Cap) vs. standard dose of Cap alone in patients with advanced or metastatic breast cancer. The goal of the study is to assess the efficacy and safety of PCS6422 + Cap as a treatment option for patients with advanced or metastatic breast cancer who are not eligible for anthracycline- or taxane-containing therapies, or other available therapies, including PD-1 or PARP inhibitors.

Detailed Description

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This is an adaptive Phase 2, open-label, randomized, multi-center study evaluating up to 2 regimens of PCS6422 with Cap vs. standard dose of Cap alone in patients with advanced or metastatic breast cancer who are not eligible for anthracycline- or taxane-containing therapies, or other available therapies, including PD-1 or PARP inhibitors. The goal of the study is to assess the efficacy and safety of PCS6422 + Cap as a treatment option for patients with advanced or metastatic breast cancer who have been treated with chemotherapy in the metastatic setting.

Conditions

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Breast Cancer TNBC - Triple-Negative Breast Cancer HER2-negative Breast Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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PCS6422 40 mg + Capecitabine 300 mg

Fixed single dose of PCS6422 administered with Capecitabine 150 mg BID over 7 days

Group Type EXPERIMENTAL

PCS6422 and capecitabine

Intervention Type DRUG

PCS6422 is an experimental drug that, when combined with capecitabine, may make the immune response more active against cancer.

PCS6422 40 mg + Capecitabine 450 mg or 150 mg

Fixed single dose of PCS6422 administered with Capecitabine 225 mg or 75 mg BID over 7 days

Group Type EXPERIMENTAL

PCS6422 and capecitabine

Intervention Type DRUG

PCS6422 is an experimental drug that, when combined with capecitabine, may make the immune response more active against cancer.

Capecitabine 2000 mg/m2

Standard capecitabine dose at 1000 mg/m2 BID

Group Type ACTIVE_COMPARATOR

Capecitabine

Intervention Type DRUG

Commercially available capecitabine is a commonly used oral fluoropyrimidine.

Interventions

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PCS6422 and capecitabine

PCS6422 is an experimental drug that, when combined with capecitabine, may make the immune response more active against cancer.

Intervention Type DRUG

Capecitabine

Commercially available capecitabine is a commonly used oral fluoropyrimidine.

Intervention Type DRUG

Eligibility Criteria

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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) positive, ER positive, HER2 negative advanced or metastatic breast cancer
3. Has measurable disease in accordance with RECIST 1.1 obtained by imaging within 28 days prior to C1D1
4. Other therapies are not indicated (eg, resistant or intolerant to taxanes and/or an anthracycline-containing regimen) for treatment of advanced or metastatic breast cancer
5. Has a life expectance of at least 24 weeks
6. Has Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0 or 1 at screening
7. Has adequate bone marrow, liver, and renal function as assessed by the following laboratory requirements conducted within 7 days before C1D1 (Note: labs will also be repeated pre-dose on C1D1 to confirm eligibility): a. Hemoglobin ≥9 g/dL (≥90 g/L) b. Adequate renal function by estimated glomerular filtration rate (eGFR) defined as a creatinine clearance \>50 mL/min (\>0.84 mL/s) (Cockcroft-Gault equation) and normalized to body surface area c. Peripheral absolute neutrophil count (ANC) of ≥1.5×109/L d. Platelet count of ≥100×109/L without growth factor/transfusion e. Total bilirubin \<1.5× upper limit of normal (ULN); or ≤3×ULN if the patient has Gilbert's disease f. Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \<2.5×ULN, with liver metastasis \<5×ULN g. International normalized ratio (INR) \<1.5 and prothrombin time (PT) ≤1.5×ULN, unless both of the following conditions are met: i. Patient is receiving anticoagulant therapy, and ii. PT or partial thromboplastin time (PTT) is within therapeutic range of intended use of anticoagulant h. Activated partial thromboplastin time (aPTT) ≤1.5×ULN, unless both of the following conditions are met: i. Patient is receiving anticoagulant therapy, and ii. PT or PTT is within therapeutic range of intended use of anticoagulants

Exclusion Criteria

1. Received any line of treatment for advanced or metastatic breast cancer within 21 days or 5 half-lives (whichever is longer) prior to randomization
2. Currently receiving any hormone replacement therapy, unless discontinued within 21 days prior to randomization
3. Received IV 5-FU or oral 5-FU analog in the 4 weeks prior to C1D1
4. Received DPD inhibitor within 4 weeks prior to C1D1
5. Has homozygous or compound heterozygous DPYD variants that result in complete or near-complete absence of DPD activity
6. Cardiac:

1. Has history or presence of clinically significant abnormal 12-lead electrocardiogram (ECG) results, in the Medical Monitor or Investigator's opinion
2. Has prolonged QTc (with Fridericia's correction) of \>480 msec performed at Screening
3. Has a history of prolonged QTc interval, ventricular tachycardia/fibrillation or significant ventricular arrhythmia, or Torsades de Pointes, or a history of ventricular ablation for arrhythmia
4. Has congenital long QT syndrome or a family history of long QT syndrome
5. Has other clinically significant cardiac disease including, but not limited to, myocardial infarction, unstable angina, cardiac or other vascular stenting, angioplasty, or surgery ≤12 months prior to randomization, congestive heart failure

* Class II per the New York Heart Association, or history of myocarditis
7. Is pregnant or breastfeeding
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Processa Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Arizona Oncology Associates

Tucson, Arizona, United States

Site Status RECRUITING

Valkyrie Clinical Trials

Los Angeles, California, United States

Site Status RECRUITING

FOMAT Medical Research

Oxnard, California, United States

Site Status RECRUITING

AP Medical Research

Miami, Florida, United States

Site Status RECRUITING

Moffitt Cancer Center

Tampa, Florida, United States

Site Status RECRUITING

Northwest Cancer Center

Dyer, Indiana, United States

Site Status RECRUITING

University of Maryland Medical Center (UMMC)

Baltimore, Maryland, United States

Site Status RECRUITING

Rutgers Cancer Institute of New Jersey

New Brunswick, New Jersey, United States

Site Status RECRUITING

Clinical Research Alliance

Westbury, New York, United States

Site Status RECRUITING

Gabrail Cancer Center Research

Canton, Ohio, United States

Site Status RECRUITING

SCRI Oncology Partners

Nashville, Tennessee, United States

Site Status RECRUITING

Texas Oncology PA (Austin)

Austin, Texas, United States

Site Status RECRUITING

Texas Oncology PA (San Antonio)

San Antonio, Texas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Sian Bigora, PharmD

Role: CONTACT

410-693-6844

Facility Contacts

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Aisha Ahmed, MD

Role: primary

520-866-0206

Chemyn Cortez

Role: primary

424-535-1874

Kelly Schlingensiepen

Role: primary

805-483-1185

Eloy Roman, MD

Role: primary

305-400-8899

Shere Wallace

Role: primary

813-745-4933

Spencer Zions

Role: backup

Mariela Study Coordinator

Role: primary

219-924-8178 ext. 279

Nancy Tait

Role: primary

410-328-3546

Shameema Mohamed

Role: primary

732-754-7788

James D'Olimpio, MD

Role: primary

Carrie Smith

Role: primary

330-417-8231

Kristy Long

Role: primary

615-712-3268

Kathryn Hudson, MD

Role: primary

512-427-9400

Emmalind Aponte, MD

Role: primary

210-595-5300

Other Identifiers

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PCS6422-BC-01

Identifier Type: -

Identifier Source: org_study_id

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