Skip to content

A Study of ZN-c5 in Participants With Breast Cancer

A Phase 1 Open-Label, Multicenter Study to Evaluate Biomarkers for ZN-c5 in Subjects With Estrogen Receptor-Positive, Human Epidermal Growth Factor Receptor 2-Negative Breast Cancer

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04176757
Enrollment
35
Registered
2019-11-25
Start date
2020-01-03
Completion date
2021-05-25
Last updated
2022-08-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Brief summary

This is a Phase 1 open-label, multicenter study to evaluate biomarkers for ZN-c5 in subjects with breast cancer

Interventions

DRUGZN-c5

ZN-c5 study drug to be administered orally daily

Sponsors

Zeno Alpha Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Signed and dated ICF 2. Age ≥ 18 years of age, either gender 3. Females must be postmenopausal as defined by at least one of the following: 1. Age ≥ 60 years; 2. Age \< 60 years and cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause; and serum estradiol and follicle stimulating hormone levels within the local laboratory's normal reference range for postmenopausal females; 3. Documented bilateral oophorectomy 4. Histologically or cytologically confirmed diagnosis of adenocarcinoma of the breast 5. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1 6. Adequate organ function defined as follows: 1. Hematologic: Platelets ≥ 100 × 109/L; Hemoglobin ≥ 9.0 g/dL; Absolute neutrophil count ≥ 1.5 × 109/L (without platelet transfusion or any hematopoietic growth factors within previous 7 days of the hematologic laboratory values obtained at the Screening Visit) 2. Hepatic: Aspartate aminotransferase (AST) / Alanine aminotransferase (ALT) ≤ 2.5 × upper limit of normal (ULN); Total or conjugated bilirubin ≤ 1.5 × ULN 3. Renal: Serum creatinine ≤ 1.5 × ULN or creatinine clearance (CrCl) ≥ 60 mL/min

Exclusion criteria

1. Major surgery, defined as any surgical procedure that involves general anesthesia and a significant incision (i.e., larger than what is required for placement of central venous access, percutaneous feeding tube, or biopsy) within 28 days of the first administration of study drug 2. Treatment with another investigational drug or other intervention within 28 days before the first administration of study drug 3. Impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of oral medication, including any unresolved nausea, vomiting, or diarrhea that is CTCAE v.5.0 Grade \> 1 4. Myocardial infarction, symptomatic congestive heart failure (New York Heart Association Classification \> Class II), unstable angina, or serious uncontrolled cardiac arrhythmia within the last 6 months of study Day 1 5. Uncontrolled inter-current illness 6. History or evidence of clinically significant disorder, condition, or disease that, in the opinion of the Investigator would pose a risk to subject safety or interfere with the study evaluations, procedures, or completion

Design outcomes

Primary

MeasureTime frame
Corroborate the single agent Recommended Phase 2 DoseThroughout the study, an average of 15 months

Secondary

MeasureTime frameDescription
Dose-biomarker relationshipThroughout the study, an average of 15 monthsPercentage positive of Immunohistochemistry (IHC) staining Estrogen Receptor (ER) as compare to baseline

Countries

Australia, Bosnia and Herzegovina, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026