NCT06380751 · AstraZeneca
Saruparib (AZD5305) Plus Camizestrant Compared With CDK4/6 Inhibitor Plus Endocrine Therapy or Plus Camizestrant in HR-Positive, HER2-Negative (IHC 0, 1+, 2+/ ISH Non-amplified), BRCA1, BRCA2, or PALB2m Advanced Breast Cancer
(EvoPAR-BR01)
What this study is about
The primary objective of the study is to measure effectiveness of saruparib (AZD5305) plus camizestrant compared with physician's choice CDK4/6i plus ET in patients with BRCA1, BRCA2, or PALB2m, HR-positive, HER2-negative (defined as IHC 0, 1+, 2+/ ISH non-amplified) advanced breast cancer
View original scientific description
The primary objective of the study is to measure efficacy of saruparib (AZD5305) plus camizestrant compared with physician's choice CDK4/6i plus ET in patients with BRCA1, BRCA2, or PALB2m, HR-positive, HER2-negative (defined as IHC 0, 1+, 2+/ ISH non-amplified) advanced breast cancer
Interventions
DRUG
Saruparib (AZD5305)
Saruparib (AZD5305) is a potent and selective inhibitor of PARP1, with minimal effect on PARP2.
DRUG
Camizestrant
Camizestrant (AZD9833) is an orally bioavailable, next generation SERD with non-clinical and clinical activity in both ESR1 mutant and wild type settings .
DRUG
Abemaciclib
CDK4/6 Inhibitor
DRUG
Ribociclib
CDK4/6 Inhibitor
DRUG
Palbociclib
CDK 4/6 Inhibitor
DRUG
Fulvestrant
Endocrine Therapy
DRUG
Letrozole
Endorcine Therapy
DRUG
Anastrozole
Endocrine Therapy
DRUG
Exemestane
Endocrine Therapy
Primary outcome measures
Progression-Free Survival
Time frame: Up to approximately 59 months
PFS is defined as time from randomisation until progression per RECIST v1.1 as assessed by BICR, or death due to any cause.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Adult females, pre/peri-menopausal and/or post-menopausal, and adult males
- Histologically or cytologically documented diagnosis of HR-positive, HER2-negative breast cancer
- Advanced breast cancer with either locally advanced disease not amenable to curative treatment or metastatic disease
- ECOG performance status of 0 or 1 with no deterioration over the previous 2 weeks
- FFPE tumour tissue from each participant
- Documented germline tumour loss of function mutation in BRCA1, BRCA2, or PALB2
- Adequate organ and marrow function
Exclusion criteria
- Participants with history of MDS/AML or with features suggestive of MDS/AML
- Participants with any known predisposition to bleeding
- Any history of persisting severe cytopenia
- Any evidence of severe or uncontrolled systemic diseases or active uncontrolled infections
- Refractory nausea and vomiting, chronic GI disease, inability to swallow the formulated product, or previous significant bowel resection
Where
- Gilbert, Arizona
- Fountain Valley, California
- Glendale, California
- Los Angeles, California
- Newport Beach, California
- Aurora, Colorado
- Grand Junction, Colorado
- Hollywood, Florida
- Jacksonville, Florida
- Orlando, Florida
- Chicago, Illinois
- Evanston, Illinois
And 37 more locations — see the full list below.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 29, 2026 · Source of record for eligibility and locations