Adjuvant Intensification for LAR
POLARIS
Standard Chemotherapy Plus Oral Everolimus as Adjuvant Therapy for LAR Breast Cancer Patients: A Randomized, Open-Label, Phase III Trial (POLARIS)
1 other identifier
interventional
904
0 countries
N/A
Brief Summary
This study enrolled patients with early-stage triple-negative breast cancer who had undergone radical surgery. The postoperative pathology met the TNM staging criteria of pT1c-3N0-3M0, and immunohistochemistry (IHC) results confirmed ER-negative status (IHC showed \<1% of tumor cells positive for ER), PR-negative status (IHC showed \<1% of tumor cells positive for PR), and HER2-negative status (IHC intensity of 0 or 1+; or IHC intensity of 2+ but with negative in situ hybridization results). Additionally, patients either exhibited high AR expression (IHC showing AR ≥10%) or were classified as the LAR subtype based on digital pathology. This study plans to prospectively enroll 904 subjects, who will be randomized in a 1:1 ratio after completing standard chemotherapy. They will be allocated to either the standard-of-care (SOC) chemotherapy followed by everolimus group or the SOC-alone group. The study aims to evaluate the efficacy of SOC chemotherapy followed by everolimus versus SOC chemotherapy alone as adjuvant therapy for patients with early-stage radically resected triple-negative breast cancer of the LAR subtype, with the primary endpoint being 3-year invasive disease-free survival (iDFS).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_3
Started Feb 2026
Longer than P75 for phase_3
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 14, 2026
CompletedStudy Start
First participant enrolled
February 1, 2026
CompletedFirst Posted
Study publicly available on registry
February 12, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 1, 2033
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2033
February 12, 2026
February 1, 2026
7 years
January 14, 2026
February 10, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
iDFS
It is defined as the percentage of patients who remain free of invasive disease recurrence, secondary primary invasive cancers, or death from any cause over a 3-year period from randomization or initiation of study treatment.
3 year
Secondary Outcomes (6)
DFS
3 year
DDFS
3year
RFS
3 year
OS
3 year
Safety and Tolerability
3 year
- +1 more secondary outcomes
Study Arms (2)
SOC-everolimus
EXPERIMENTALAfter completion of standard chemotherapy, everolimus at a fixed dose of 10 mg orally once daily continuously for a duration of 1 year.
SOC
NO INTERVENTIONAfter completion of standard chemotherapy, undergo observation and follow-up.
Interventions
After completion of standard chemotherapy, everolimus at a fixed dose of 10 mg orally once daily continuously for a duration of 1 year.
Eligibility Criteria
You may qualify if:
- Female, aged ≥18 years and ≤70 years.
- ECOG performance status 0-1.
- Histologically confirmed invasive triple-negative breast cancer (\*\*definition\*\*: breast cancer with estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) all confirmed negative by pathology. Specifically: \*\*ER-negative\*\*: IHC \<1%; \*\*PR-negative\*\*: IHC \<1%; \*\*HER2-negative\*\*: IHC 0/1+ or IHC 2+ but FISH/CISH negative. Additionally, histology must confirm \*\*high AR expression\*\*: AR IHC ≥10%, \*\*or\*\* digital pathology indicates the LAR subtype.
- Underwent radical surgery for early-stage breast cancer, with postoperative pathology meeting TNM staging \*\*pT1c-3N0-3M0\*\*.
- Patients with early-stage breast cancer who have received \*\*at least 4 cycles of neoadjuvant chemotherapy containing anthracycline or taxane agents\*\*, \*\*did not achieve pathological complete response (pCR)\*\*, and \*\*do not carry pathogenic/likely pathogenic germline BRCA1/2 mutations\*\*.
- Adequate organ function, meeting the following criteria:
- \*\*Hematology\*\*: HB ≥ 90 g/L (no transfusion within 14 days); ANC ≥ 1.5 × 10⁹/L; PLT ≥ 75 × 10⁹/L.
- \*\*Biochemistry\*\*: TBIL ≤ 1.5 × ULN; ALT and AST ≤ 3 × ULN; serum Cr ≤ 1 × ULN, with creatinine clearance \>50 mL/min (Cockcroft-Gault formula).
- Surgical wound fully healed before study initiation.
- Females of childbearing potential must use a medically approved contraceptive method during the study treatment and for at least 3 months after the last dose of study drug.
- The patient voluntarily agrees to participate, signs the informed consent form, demonstrates good compliance, and agrees to follow-up.
You may not qualify if:
- Patients who meet \*\*any\*\* of the following criteria will be excluded from this study:
- Bilateral breast cancer.
- Metastatic disease at any site.
- Patients with cT \> 2 cm or positive lymph nodes \*\*and\*\* carrying pathogenic/likely pathogenic germline BRCA1/2 mutations.
- History of clinically significant or uncontrolled cardiac disease, including congestive heart failure, angina, myocardial infarction within the past 6 months, or ventricular arrhythmia.
- History of clinically significant pulmonary disease, including but not limited to interstitial pneumonia, pneumonia, pulmonary fibrosis, and radiation pneumonitis (except for asymptomatic radiation changes not requiring intervention); or suspected such disease based on screening examinations.
- History of other malignancies within the past 5 years, excluding cured carcinoma in situ of the cervix, basal cell carcinoma of the skin, or squamous cell carcinoma of the skin.
- Pregnant or lactating women; women of childbearing potential who cannot practice effective contraception.
- Patients concurrently participating in other clinical trials.
- Patients with a history of hypersensitivity or known allergy to any component of the study drugs; or patients with a history of allergy to other monoclonal antibodies.
- Severe or uncontrolled infection.
- Hypertension that cannot be adequately controlled with antihypertensive medication (systolic blood pressure \> 140 mmHg, diastolic blood pressure \> 90 mmHg).
- History of gastrointestinal bleeding within the past 6 months, or clear tendency for gastrointestinal bleeding, such as esophageal varices at risk of bleeding, locally active ulcerative lesions, or fecal occult blood ≥ (++). Patients with fecal occult blood (+) must undergo gastroscopy for further evaluation.
- Known active HBV or HCV infection (HBV-DNA ≥ 500 IU/mL), or chronic infection with abnormal liver function.
- Urinalysis showing urine protein ≥ ++, or 24-hour urine protein quantification \> 1.0 g.
- +3 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Fudan Universitylead
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director of the Department of Breast Surgery, Fudan University Shanghai Cancer Center
Study Record Dates
First Submitted
January 14, 2026
First Posted
February 12, 2026
Study Start
February 1, 2026
Primary Completion (Estimated)
February 1, 2033
Study Completion (Estimated)
February 1, 2033
Last Updated
February 12, 2026
Record last verified: 2026-02
Data Sharing
- IPD Sharing
- Will not share