Trial Profile

Phase II Study of Estradiol Therapy to Target ER-Mutant and ER-Wild-Type ER+ Metastatic or Advanced Breast Cancer

Status: Recruiting

Phase of Trial: Phase II

Latest Information Update: 22 Jan 2026

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At a glance

Drugs Estradiol acetate (Primary)
Indications Advanced breast cancer
Focus Therapeutic Use
Acronyms ESTHER

Most Recent Events

14 Jan 2026 Planned primary completion date changed from 1 May 2026 to 1 May 2027.
17 Jul 2023 Status changed from not yet recruiting to recruiting.
10 Feb 2023 New trial record

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