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Clinical Trial ● Currently Recruiting Phase III NCT05646862

A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy

A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast…

📅 01 Sep 2026 ⏱ 2 min read
Currently Recruiting
This trial is actively seeking participants in the UK. Discuss eligibility with your patient before referring.
Status
Currently Recruiting
Phase
Phase III
NCT ID
NCT05646862
Sponsor
Hoffmann-La Roche
Start
2023-06-07
ClinicaliQ Trial Snapshot
  • A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy — Recruiting • Phase III • Oncology….
  • What is being tested: Inavolisib combined with fulvestrant versus alpelisib combined with fulvestrant in HR-positive, HER2-negative, PIK3CA-mutated breast cancer patients who have progressed after prior CDK4/6 inhibitor and endocrine therapy combination treatment.
  • Patient eligibility overview: Participants must have locally advanced or metastatic HR-positive, HER2-negative breast cancer with confirmed PIK3CA mutations and documented progression following CDK4/6 inhibitor plus endocrine combination therapy.
Use This Page For
  • Quick orientation before opening the registry record.
  • Checking recruitment status, phase and sponsor at a glance.
  • Connecting this trial to nearby guidelines, Drug Science and education.
What This Trial Is Studying

This is a Phase III, multicenter, randomized, open-label, global study designed to evaluate the efficacy and safety of inavolisib plus fulvestrant compared with alpelisib plus fulvestrant in patients with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2) -negative, PIK3CA-mutated, locally advanced (LA) or metastatic breast cancer (mBC), who progressed during or after cyclin dependent kinase 4/6i (CDK4/6i)-based therapy. Enrollment for the main study is now complete.

Eligibility Snapshot
  • for Main Study and Sub-study: * If pre/perimenopausal women and men treatment with luteinizing hormone-releasing hormone (LHRH) agonist therapy beginning at least 2 weeks prior to Day 1 of Cycle 1 * Histologically or cytologically confirmed adenocarcinoma of the breast that is locally advanced or metastatic and is not amenable to surgical or radiation therapy with curative intent * Documented HR +/ HER2- tumor according to American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) guidelines * Confirmation of biomarker eligibility: detection of specified mutation(s) of PIK3CA via specified test * Disease progression after or during treatment with a combination of CDK4/6i and endocrine therapy: 6 months * Adequate hematologic and organ function prior to initiation of study treatment

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.

Full Trial Details
View this trial on the source registry
Eligibility criteria, protocol, and results when available
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