A Phase IIIb, Single-Arm, Open-Label Study Evaluating Adherence, Tolerability, and Patient Reported Outcomes (PRO) of Giredestrant in Patients With ER+/HER2- Early Breast Cancer Who Are Intolerant to Adjuvant Aromatase Inhibitor Therapy
Genentech, Inc.
Summary
The purpose of this study is to understand treatment adherence and patient-reported outcomes of switching to giredestrant due to prior aromatase inhibitor (AI) intolerance. Giredestrant will be administered as adjuvant endocrine therapy for participants with low-, medium-, and high-risk, Stage I-III, histologically confirmed, estrogen receptor positive (ER+), human epidermal growth factor receptor 2 negative (HER2-), early breast cancer (eBC), as defined by the investigator. Participants will enroll if considered to be intolerant to a prior adjuvant AI therapy.
Eligibility
- Age range
- 18+ years
- Sex
- Female
- Healthy volunteers
- No
Inclusion Criteria: * Considered appropriate for treatment with endocrine therapy (ET) * Histologically confirmed diagnosis of ER+/HER2-, Stage I-III (low-/medium-/high-risk) early breast cancer (eBC) * Documented ER+ tumor according to American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP), defined as ≥1% of tumor cells stained positive * Documented HER2- tumor according to ASCO/CAP * Postmenopausal females at the time of signing the Informed Consent Form * Documented use of a prior adjuvant aromatase inhibitor (AI) (i.e., anastrozole, exemestane, or letrozole) f…
Interventions
- DrugGiredestrant
Participants will receive giredestrant at a dose of 30 mg orally once daily on Days 1-28 of each 28-day cycle for up to 4.5 years or until disease recurrence or unacceptable toxicity (whichever occurs first).
Location
- Orange Coast Medical CenterFountain Valley, California