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Safety and Efficacy of AZD4547 in Combination With Fulvestrant vs. Fulvestrant Alone in ER+ Breast Cancer Patients (GLOW)

This study has been completed.
Information provided by (Responsible Party):
AstraZeneca Identifier:
First received: September 14, 2010
Last updated: January 13, 2016
Last verified: January 2016
The purpose of this study is to assess the safety and effectiveness of AZD4547 in combination with fulvestrant vs. fulvestrant alone in ER+ breast cancer patients with FGFR1 polysomy (FISH4/5) or gene amplification (FISH 6)

Condition Intervention Phase
FGFR Inhibition, Pharmacokinetics, Biomarkers
ER+ Breast Cancer
Drug: AZD4547
Drug: Exemestane
Drug: Placebo
Drug: Fulvestrant
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomised Double-blind Phase IIa Study (With Combination Safety Run-in) to Assess the Safety and Efficacy of AZD4547 in Combination With Fulvestrant vs. Fulvestrant Alone in ER+ Breast Cancer Patients With FGFR1 Polysomy or Gene Amplification Who Have Progressed Following Treatment With Prior Endocrine Therapy (Adjuvant or First-line Metastatic) (GLOW)

Resource links provided by NLM:

Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • Safety and Tolerability in Terms of Number of Patients With Adverse Events (Serious and Non-serious) [ Time Frame: 3 years, 10 months (Adverse events recorded from patient screening to discontinuation plus 28 days safety follow-up). ]

Enrollment: 127
Study Start Date: December 2010
Study Completion Date: October 2014
Primary Completion Date: September 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: AZD4547 + exemestane
Safety run-in: AZD4547 plus exemestane
Drug: AZD4547
Tablet oral twice daily
Drug: Exemestane
Tablet oral once daily
Experimental: AZD4547 + fulvestrant
A Randomised phase IIa: AZD4547 plus fulvestrant
Drug: AZD4547
Tablet oral twice daily
Drug: Fulvestrant
A monthly intramuscular injection of a depot formulation with a loading dose 14 days after initial administration
Placebo Comparator: Placebo + fulvestrant
Randomised phase IIa: Matching placebo plus fulvestrant
Drug: Placebo
Tablet oral twice daily
Drug: Fulvestrant
A monthly intramuscular injection of a depot formulation with a loading dose 14 days after initial administration


Ages Eligible for Study:   18 Years to 99 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Post-menopausal women (either through bilateral oophorectomy or amenorrhoeic for 24 months)
  • Histological confirmation of Breast Cancer with documented ER+ receptor status
  • Safety run-in: Relapsing during/within 12 months of completion of a single regimen of adjuvant endocrine therapy with non-steroidal AI and/ tamoxifen or progression following 1st line endocrine therapy with non-steroidal AL
  • Rand phase IIa: Received at least 1 prior endocrine therapy in the metastatic setting or have relapsed during/ within 6 months of completion of adjuvant endocrine therapy (either non-steroidal AI or tamoxifen or a combination of both). Chemotherapy administered in the adjuvant setting is permitted.
  • Rand phase IIa: Mandatory provision of tumour sample to confirm FGFR1 polysomy or gene amplification. At least one measurable lesion that can be accurately assessed by CT/MRI/x-ray at baseline and follow up visits

Exclusion Criteria:

  • Prior exposure to exemestane (safety run-in) / fulvestrant (randomized phase IIa), or any agent known to inhibit FGFRs.
  • More than 1 prior regimen of chemotherapy for breast cancer
  • ECG recordings that demonstrate significant abnormalities in cardiac rate, rhythm or conduction
  • History of hypersensitivity to active or inactive excipients of AZD4547 or exemestane (safety run-in ) or fulvestrant (Randomized phase), including castor oil, or drugs with a similar chemical structure or class to AZD4547 or exemestane or fulvestrant.
  • Randomized phase IIa: bleeding/blood clotting conditions that would prevent the administration of the fulvestrant injection into the buttocks
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01202591

Research Site
Leuven, Belgium
Research Site
Namur, Belgium
Czech Republic
Research Site
Brno, Czech Republic
Research Site
Praha 4, Czech Republic
Research Site
Villejuif Cedex, France
Research Site
Erlangen, Germany
Research Site
München, Germany
Research Site
Rostock, Germany
Research Site
Budapest, Hungary
Research Site
Kaposvár, Hungary
Research Site
Nyíregyháza, Hungary
Research Site
Szeged, Hungary
Research Site
Genova, Italy
Research Site
Lido di Camaiore, Italy
Research Site
Roma, Italy
Research Site
Cluj Napoca, Romania
United Kingdom
Research Site
Dundee, United Kingdom
Research Site
London, United Kingdom
Research Site
Manchester, United Kingdom
Research Site
Oxford, United Kingdom
Research Site
Sutton, United Kingdom
Sponsors and Collaborators
Study Director: Donal Landers AstraZeneca
  More Information

Responsible Party: AstraZeneca Identifier: NCT01202591     History of Changes
Other Study ID Numbers: D2610C00003
2010-021220-10 ( EudraCT Number )
Study First Received: September 14, 2010
Results First Received: September 7, 2015
Last Updated: January 13, 2016

Keywords provided by AstraZeneca:
Breast Cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Estrogen Receptor Antagonists
Estrogen Antagonists
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Aromatase Inhibitors
Steroid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action processed this record on May 23, 2017