CClinicalTrials.gg
CompletedNCT00303524Updated Dec 23, 2009

Comparative Study of Oestradiol Suppression: Zoladex 10.8mg/3 Month vs. 3.6mg/Month in ER +ve EBC Pre-menopausal Patients

A Phase 2 interventional study of Goserelin acetate and Goserelin acetate in Breast Cancer, sponsored by AstraZeneca. Completed at 22 sites in Japan. Open to female participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2009-12-23.

Sponsored by AstraZeneca · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
170
Allocation
Randomized
Ages
20 Years and older
Sex
Female
01

Study summary

The primary purpose of this study is to establish if a 10.8 mg dose of ZOLADEX given 3 monthly is non-inferior to a 3.6 mg dose of ZOLADEX given monthly in terms of oestradiol suppression in patients with oestrogen receptor positive early breast cancer.

02

Conditions studied

  • Breast Cancer

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03

In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's enrollment of 170 is above the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

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Lead sponsor

AstraZeneca is the lead sponsor of 3,429 studies on the registry; 270 are open to participants now.

Of its 357 completed or terminated interventional studies of FDA-regulated products, 173 (48%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Pre-menopausal women aged 20 years or over with histological/cytologically-confirmed ER +ve breast cancer who have undergone radical surgery and WHO performance status 0,1 or 2.

Exclusion criteria

Exclusion Criteria:

  • Evidence of metastatic disease, previous bilateral oophorectomy or radiotherapy to the ovaries, previous chemotherapy, breast surgery completed over 12 weeks before starting trial treatment, previous neo-adjuvant/adjuvant hormonal breast cancer therapy
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
170 participants (actual)

Study arms

  • Experimental
    1

    Zoladex 3-month depot

    Drug: Goserelin acetate

  • Experimental
    2

    Zoladex 1-month depot

    Drug: Goserelin acetate

Interventions

  • DrugGoserelin acetate

    Injection 3.6 mg monthly

    Also known as: Zoladex

  • DrugGoserelin acetate

    injection 10.8 mg every 3 months

    Also known as: Zoladex

06

What researchers measure

Primary outcomes

  1. Zoladex 10.8mg depot (every 12 weeks) is non-inferior to Zoladex 3.6mg depot (every 4 weeks) in terms of oestradiol (E2) suppression in patient population by assessment of area under the curve of E2 concentration during the first 24 weeks of treatment.

    Time frame: every 12 weeks

Secondary outcomes

  1. Zoladex 10.8mg has similar safety and tolerability profile to Zoladex 3.6mg. Examination of goserelin pharmacokinetics (PK) in Japanese patients after injection of Zoladex 10.8mg. Efficacy of Zoladex 10.8mg is similar to 3.6mg by assessment of DFS.

    Time frame: every 12 weeks

07

Study locations

22 sites
  • Research Site
    Chiba, Japan
  • Research Site
    Fukuoka, Japan
  • Research Site
    Fukushima, Japan
  • Research Site
    Isehara, Japan
  • Research Site
    Kagoshima, Japan
  • Research Site
    Kashiwa, Japan
  • Research Site
    Kawasaki, Japan
  • Research Site
    Kitakyushu, Japan
  • Research Site
    Kumamoto, Japan
  • Research Site
    Matsuyama, Japan
  • Research Site
    Miyazaki, Japan
  • Research Site
    Nagoya, Japan
  • Research Site
    Niigata, Japan
  • Research Site
    Osakasayama, Japan
  • Research Site
    Osaka, Japan
  • Research Site
    Ota, Japan
  • Research Site
    Saitama, Japan
  • Research Site
    Shimotsuke, Japan
  • Research Site
    Suita, Japan
  • Research Site
    Tokorozawa, Japan
  • Research Site
    Tokyo, Japan
  • Research Site
    Utsunomiya, Japan
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 23, 2009, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00303524
Lead sponsor
AstraZeneca
First posted
Mar 17, 2006
Start date
Feb 2006
Primary completion
Aug 2007
Completion
Feb 2009
Last update
Dec 23, 2009

Study contacts

AstraZeneca Japan Medical Director, MD
study director · AstraZeneca
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2009. You cannot join it, but the record below documents what was studied.

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