A Study to Test Inavolisib Treatments in Participants With Early-Stage, PIK3CA-Mutated Breast Cancer
Not Applicable
Not yet recruiting
- Conditions
- Breast Cancer
- Interventions
- Registration Number
- NCT07054190
- Lead Sponsor
- Hoffmann-La Roche
- Brief Summary
This study will evaluate the safety and efficacy of inavolisib combination therapies in participants with untreated, PIK3CA-mutated, Stage II-III, estrogen receptor (ER)-positive, Human Epidermal Growth Factor Receptor 2 (HER2)-negative breast cancer (BC).
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- Female
- Target Recruitment
- 60
Inclusion Criteria
- Histologically confirmed operable or inoperable invasive Stage II-III BC according to American Joint Committee on Cancer (AJCC) TNM staging classification
- Candidate for neoadjuvant treatment and considered appropriate for endocrine combination therapy
- Willingness to undergo breast surgery (mastectomy or breast-conserving surgery) after neoadjuvant treatment (unless inoperable)
- Documented ER-positive tumor in accordance with current American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines
- Documented HER2-negative tumor in accordance with current ASCO/CAP guidelines
- Documented Ki-67 score >=5% as per local assessment
- Confirmed PIK3CA mutation
Exclusion Criteria
- Stage IV (metastatic) BC
- Inflammatory BC (cT4d)
- Bilateral invasive BC
- History of ductal carcinoma in situ or lobular carcinoma in situ if they have received any systemic therapy for treatment or radiation therapy to the ipsilateral breast
- Previous systemic or local treatment for the primary BC currently under investigation (including excisional biopsy or any other surgery of the primary tumor and/or axillary lymph nodes, including sentinel lymph node biopsy, radiotherapy, cytotoxic, and endocrine treatments)
- Type 2 diabetes requiring ongoing systemic treatment at the time of study entry; or any history of Type 1 diabetes
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Arm A Inavolisib Participants will receive inavolisib and letrozole orally (PO) once a day (QD) from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 1-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm A Ribociclib Participants will receive inavolisib and letrozole orally (PO) once a day (QD) from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 1-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm A Letrozole Participants will receive inavolisib and letrozole orally (PO) once a day (QD) from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 1-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm B Inavolisib Participants will receive a starting regimen of inavolisib and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm B Ribociclib Participants will receive a starting regimen of inavolisib and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm B Letrozole Participants will receive a starting regimen of inavolisib and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm C Inavolisib Participants will receive a starting regimen of ribociclib PO QD from Day 1 to 21 and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm C Ribociclib Participants will receive a starting regimen of ribociclib PO QD from Day 1 to 21 and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days). Arm C Letrozole Participants will receive a starting regimen of ribociclib PO QD from Day 1 to 21 and letrozole PO QD from Day 1 to 28 in cycle 1 (each cycle=28 days). Starting on Day 1 of Cycle 2, all participants will receive the triplet regimen inavolisib + ribociclib + letrozole as follows: inavolisib and letrozole PO QD from Day 1 to 28 and ribociclib PO QD from Day 1 to 21 in cycles 2-5 (each cycle=28 days). In cycle 6, inavolisib, ribociclib and letrozole will be administered PO QD on days 1-21 (each cycle=21 days).
- Primary Outcome Measures
Name Time Method Percentage of Participants with Adverse Events (AEs) From first dose up to 30 days after last dose (approximately 8 months)
- Secondary Outcome Measures
Name Time Method Change From Baseline in Ki-67 Levels by Immunohistochemistry (IHC) Baseline, Day 22 of Cycle 1 and at Surgery (up to approximately 8 months). One cycle = 28 days Percentage of Participants with Total Pathological Complete Response (pCR) Up to approximately 8 months Percentage of Participants with Objective Response Rate (ORR), According to Modified Response Evaluation Criteria in Solid Tumors, Version 1.1 (mRECIST v1.1) Up to approximately 8 months Percentage of Participants Reporting Symptoms in Patient-Reported Outcomes of the Common Terminology Criteria for Adverse Events (PRO-CTCAE) Questionnaire Up to approximately 8 months Percentage of Participants Reporting Each Response Option at Each Time Point for the Treatment Side-Effect Bother Item (GP5) From the Functional Assessment of Cancer Therapy - General (FACT-G) Questionnaire Up to approximately 8 months Change from Baseline in Symptomatic Treatment-Related Toxicities as Assessed Through use of the PRO-CTCAE Baseline, up to approximately 8 months Change from Baseline in Treatment Side-Effect Bother as Assessed Through use of the FACT-G GP5 Item Baseline, up to approximately 8 months