Zoladex® 10.8 BC RWS

January 8, 2024 updated by: AstraZeneca

The Effectiveness of Zoladex® 10.8 mg Compared to Zoladex® 3.6mg in the Treatment of Premenopausal and Perimenopausal Hormone Receptor Positive Breast Cancer: A Real-World Study

This is a multi-center, retrospective-prospective, observational, active-control, non-inferiority, real world study using hospital medical record data, with objectives to evaluate E2 suppressive effect of Zoladex® 10.8 mg is non-inferior to Zoladex® 3.6 mg. Eligible breast cancer patients who received Zoladex® from January 1st, 2015 till December 31st, 2021(including December 31st, 2021) will be identified and included for retrospective data collection and analyses in this study. And prospective data will be monthly collected of eligible patients receiving Zoladex® after January 1st, 2022 (including January 1st, 2022) until approximately 1000 patients being included in this study for analysis. (If site has specific identification of retrospective data and prospective data, it will be subject to the requirement of site). The first date of the presence of Zoladex® treatment or prescription record for breast cancer during the study period will be considered the index date for patients. According to the Zoladex® treatment at the index date, patients will be categorized into two cohorts: Zoladex® 10.8 mg or Zoladex® 3.6 mg.

About 10-15 hospitals will be included in this study. To be considered, the hospitals need to have relatively large number of eligible patients, geographic representativeness and willingness to participate in this study. Approximately 1000 eligible patients from selected hospitals during the study period will be included and matched with propensity scores. It is expected that at least 150 matched patients in each of the two cohorts will eventually be included in the primary endpoint analysis. The final subject number will be based on the actual situation of the study.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

1176

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Beijing, China, 100021
        • Research site
      • Changsha, China, 410013
        • Research site
      • Chengdu, China
        • Research site
      • Guangan, China
        • Research site
      • Guangyuan, China
        • Research site
      • Guangzhou, China
        • Research site
      • Guangzhou, China, 510060
        • Research site
      • Hangzhou, China
        • Research site
      • Jinan, China, 250117
        • Research site
      • Nantong, China
        • Research site
      • Shanghai, China, 200032
        • Research site
      • Suzhou, China
        • Research site
      • Suzhou, China, 215006
        • Research site
      • Taiyuan, China
        • Research site
      • Tianjin, China, 300060
        • Research site
      • Xining, China
        • Research site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patients with premenopausal and perimenopausal breast cancer

Description

Inclusion Criteria

  • Diagnosed with primary breast cancer
  • Female, ≥18 years old (at index date)
  • HR positive
  • Receive Zoladex® 10.8 mg or Zoladex® 3.6 mg treatment
  • Premenopausal status prior to the treatment of Zoladex®. Baseline premenopausal status will be confirmed if the patient's last E2 measurement within 180 days prior to the index date indicated premenopausal status or there was a recorded menstrual history within 180 days prior to the index date
  • At least one actual or expected E2 testing measurement within 8-28 weeks of the index date Exclusion Criteria
  • Patients received concurrent treatments that may affect E2 testing results

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Other

Cohorts and Interventions

Group / Cohort
Study Drugs
The study drug is Zoladex® 10.8 mg. The maximum observation time window for effectiveness analysis is 28 (24+4) weeks.
Comparison Drugs
The comparison drug is Zoladex® 3.6 mg. The maximum observation time window for effectiveness analysis is 28 (24+4) weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Proportion of patients with serum E2 suppression at 12 weeks (±4 weeks). Serum E2 suppression is defined as an E2 value below the upper limit of the menopausal reference range
Time Frame: serum E2 suppression at 12 weeks (±4 weeks) after Zoladex® treatment
To assess the E2 suppressive effect of Zoladex® 10.8 mg is non-inferior to Zoladex® 3.6 mg at 12th week for the treatment of patients with premenopausal and perimenopausal breast cancer.
serum E2 suppression at 12 weeks (±4 weeks) after Zoladex® treatment

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Proportion of patients with serum E2 suppression at 24 weeks (±4 weeks). Serum E2 suppression was defined as an E2 value below the upper limit of the menopausal reference range
Time Frame: serum E2 suppression at 24 weeks (±4 weeks) after Zoladex®
To assess the E2 suppressive effect of Zoladex® 10.8 mg and Zoladex® 3.6 mg at 24th week for the treatment of patients with premenopausal and perimenopausal breast cancer
serum E2 suppression at 24 weeks (±4 weeks) after Zoladex®

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 6, 2022

Primary Completion (Actual)

December 15, 2023

Study Completion (Actual)

December 15, 2023

Study Registration Dates

First Submitted

December 22, 2021

First Submitted That Met QC Criteria

December 22, 2021

First Posted (Actual)

January 11, 2022

Study Record Updates

Last Update Posted (Actual)

January 9, 2024

Last Update Submitted That Met QC Criteria

January 8, 2024

Last Verified

January 1, 2024

More Information

Terms related to this study

Other Study ID Numbers

  • D8664R00002

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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