Last updated on June 2020

A Comparative Study of AZD9833 Versus Fulvestrant in Women With Advanced ER-Positive HER2-Negative Breast Cancer


Brief description of study

This study is randomized, open-label, parallel-group, multicentre Phase 2 study aimed to compare the efficacy and safety of oral AZD9833 versus intramuscular (IM) fulvestrant in women with advanced breast cancer.

Detailed Study Description

Post-menopausal women with histologically or cytologically confirmed metastatic or loco-regionally recurrent ER-positive HER2-negative breast cancer before randomization and fulfilling all of the inclusion criteria and none of the exclusion criteria will be included.

After the screening visit and confirmation of eligibility, patients will be randomly assigned in a 1:1:1:1 ratio to receive 1 of the following 4 treatments, consisting of 4-week treatment cycles until disease progression (assessed by the Investigator as defined by Response Evaluation Criteria in Solid Tumours [RECIST] version 1.1):

  • AZD9833 (Dose A)
  • AZD9833 (Dose B)
  • AZD9833 (Dose C)
  • Fulvestrant (500 mg) During the treatment period, patients will have scheduled visits until treatment discontinuation.

After the end of treatment, patients will attend 2 safety follow-up visits (at the time of treatment discontinuation and 28 days later) and will continue to be followed for survival.

Clinical Study Identifier: NCT04214288

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Research Site

Saint Priest En Jarez, France
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Recruitment Status: Open


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