ZK283197 for Treatment of Vasomotor Symptoms

This study has been completed.
Information provided by (Responsible Party):
ClinicalTrials.gov Identifier:
First received: September 28, 2007
Last updated: February 18, 2014
Last verified: February 2014

The primary goal of the planned study is to investigate the efficacy and safety of ZK 283197 in the dosage of 2 and 3 mg ingested once daily during a period of 8 weeks for the treatment of hot flushes. In order to be able to assess the efficacy of the test substance, this is compared with the efficacy of 1 mg Estradiol and placebo. The comparator Estradiol is a certified hormone preparation, which is already used for the treatment of hot flushes as standard treatment. After passing the screening, volunteers will start with a run-in phase followed by a 8 weeks treatment and a follow-up phase. 112 postmenopausal women with hot flushes and without relevant prior diseases will participate in three European countries (2 study sites in Germany, 1 study site in Great Britain and 1 study site in The Netherlands) in this study.

Condition Intervention Phase
Vasomotor System
Drug: BAY86-5310 (ZK283197)
Drug: Placebo
Drug: 17ß-estradiol
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: A Double- Blind, Randomized, Placebo and Active Controlled, Multi-center Study to Investigate Efficacy and Safety After Oral Administration of 2 and 3 mg ZK 283197, 1 mg 17ß-estradiol and Placebo Once Daily for 8 Weeks in Postmenopausal Women With Hot Flushes.

Resource links provided by NLM:

Further study details as provided by Bayer:

Primary Outcome Measures:
  • Mean relative change in frequency of moderate to severe hot flushes per week between baseline (at least 2-week run-in phase) and week 8 of the treatment phase. [ Time Frame: Between baseline and week 8 of the treatment phase ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Safety and tolerability [ Time Frame: Between baseline until end of Follow-up period ] [ Designated as safety issue: Yes ]
  • Pharmacodynamics incl. vaginal cytology, endometrial thickness, endometrial histology and exploratory mRNA expression profiling of endometrial biopsies and blood cells [ Time Frame: From baseline to all treatment weeks up to 8 weeks ] [ Designated as safety issue: Yes ]
  • Pharmacokinetics [ Time Frame: From baseline to all treatment weeks up to 8 weeks ] [ Designated as safety issue: No ]
  • Exposure - response relationship [ Time Frame: From baseline to all treatment weeks up to 8 weeks ] [ Designated as safety issue: Yes ]

Enrollment: 116
Study Start Date: October 2007
Study Completion Date: December 2008
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm 1 Drug: BAY86-5310 (ZK283197)
3 mg ZK 283197, once daily p.o. over 8 weeks (n = 36)
Placebo Comparator: Arm 2 Drug: Placebo
Placebo, once daily p.o. over 8 weeks (n = 36)
Experimental: Arm 3 Drug: BAY86-5310 (ZK283197)
2 mg ZK 283197, once daily p.o. over 8 weeks (n = 20)
Active Comparator: Arm 4 Drug: 17ß-estradiol
1 mg 17ß-estradiol, once daily p.o. over 8 weeks (n = 20)


Ages Eligible for Study:   45 Years to 65 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Women with at least 35 moderate to severe hot flushes in seven consecutive days
  • Age: 45 - 65 years (inclusive)
  • Body mass index (BMI) : 20 - 30 kg/m² (inclusive)
  • Postmenopausal status

Exclusion Criteria:

  • Contraindication for use for hormonal therapy
  • Prior hysterectomy
  • Hormonal therapy or intrauterine hormone releasing device within 4 weeks prior to study entry or any long-acting injectable or implant up to 6 months prior to study entry
  • Repeated intake of medications affecting study aim
  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 ClinicalTrials.gov identifier: NCT00537836

Berlin, Germany, 10115
Berlin, Germany, 13353
Groningen, Netherlands, 9713 GZ
United Kingdom
Cambridge, Cambridgeshire, United Kingdom, CB23 2TN
Sponsors and Collaborators
Study Director: Bayer Study Director Bayer
  More Information

Additional Information:
No publications provided

Responsible Party: Bayer
ClinicalTrials.gov Identifier: NCT00537836     History of Changes
Other Study ID Numbers: 91544, 2007-001791-36, 310781
Study First Received: September 28, 2007
Last Updated: February 18, 2014
Health Authority: Germany: Federal Institute for Drugs and Medical Devices

Keywords provided by Bayer:
Hot flushes
Therapy of hot flushes
17ß-estradiol (E2)
Hormone replacement therapy

Additional relevant MeSH terms:
Hormones, Hormone Substitutes, and Hormone Antagonists
Pharmacologic Actions
Physiological Effects of Drugs

ClinicalTrials.gov processed this record on March 26, 2015