Clinical Proof-of-concept Study for the Combination BAY60-4552 / Vardenafil for the Treatment of Erectile Dysfunction Not Sufficiently Responsive to Standard Therapy With PDE5 Inhibitors

A Prospective, Randomized, Double-blind, Double-dummy, Placebo- and Active Controlled, Multicenter Study Assessing the Efficacy and Safety of the Combination BAY60-4552 / Vardenafil Compared to Vardenafil (20 mg) for the Treatment of Erectile Dysfunction Not Sufficiently Responsive to Standard Therapy With PDE5 (Phosphodiesterase 5) Inhibitors

This study examines the efficacy and safety of the combination treatment BAY60-4552 plus vardenafil in patients with erectile dysfunction, who do not sufficiently respond to therapy with PDE5 (Phosphodiesterase 5) inhibitors.

Patients meeting the entry criteria, will receive vardenafil alone in the first four weeks of the study to assess the effect of PDE5 inhibitor therapy given alone.

Patients with an insufficient therapeutic response to vardenafil alone will enter the next part of the study, and will be randomly assigned to one of 3 treatments. There is a 1 in 3 chance of receiving either the combination BAY60-4552 plus vardenafil, or vardenafil alone, or placebo. Neither patient nor the treating physician will know which treatment is given (double-blinded design).This part of the study will last four weeks Patients will have to go to the clinic/hospital for 7 visits during the 8 weeks.

Study Overview

• Status: Completed
• Conditions: Erectile Dysfunction
• Intervention / Treatment: Drug: BAY60-4552 plus Vardenafil; Drug: Vardenafil; Drug: Placebo

• Study Type: Interventional
• Enrollment (Actual): 140
• Phase: Phase 2

Contacts and Locations

Study Locations

• Finland
  • Oulu, Finland, 90100
  • Tampere, Finland, FIN-33520
  • Turku, Finland, 20100
• France
  • Chambery Cedex, France, 73011
  • Garches, France, 92380
  • Lille, France, 59000
  • Lyon Cedex, France, 69437
  • Nice, France, 06200
  • Nimes, France, 30000
• Germany
  • Hamburg, Germany, 20246
  • Hamburg, Germany, 20354
  • Bayern
    • Weiden, Bayern, Germany, 92637
  • Hessen
    • Marburg, Hessen, Germany, 35039
  • Niedersachsen
    • Osnabrück, Niedersachsen, Germany, 49076
  • Nordrhein-Westfalen
    • Mülheim, Nordrhein-Westfalen, Germany, 45468
  • Rheinland-Pfalz
    • Koblenz, Rheinland-Pfalz, Germany, 56068
  • Sachsen
    • Leipzig, Sachsen, Germany, 04109
    • Leipzig, Sachsen, Germany, 04105
• Italy
  • Firenze, Italy, 50141
  • Milano, Italy, 20132
  • Napoli, Italy, 80131
  • Roma, Italy, 00133
• Netherlands
  • Den Haag, Netherlands, 2545 CH
  • Groningen, Netherlands, 9713 GZ
  • Leiden, Netherlands, 2333 ZA
• Spain
  • Barcelona, Spain, 08036
  • Barcelona, Spain, 08003
  • Málaga, Spain, 29007
  • Madrid
    • Aravaca, Madrid, Spain, 28023
    • Majadahonda, Madrid, Spain, 28222
• Sweden
  • Eskilstuna, Sweden, 633 40
  • Göteborg, Sweden, 405 45
  • Halmstad, Sweden, 302 45
  • Jönköping, Sweden, 554 66
  • Linköping, Sweden, 581 85
  • Stockholm, Sweden, 141 86

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 64 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Open-label run-in phase (first four weeks):

  • Written informed consent signed before any study-specific procedure
  • History of ED (Erectile Dysfunction) for at least 6 months prior to screening, defined as "the inability to achieve and maintain an erection of the penis sufficient to complete satisfactory sexual intercourse"; the diagnosis of ED has to be confirmed by a physician
  • Stable, heterosexual relationship for at least 6 months prior to screening
  • Aged 18 to 64 years (inclusive) at the first screening examination
  • History of previous use of at least 1 marketed PDE5 (Phosphodiesterase 5) inhibitor and insufficient therapeutic efficacy despite use of the highest approved dose

• Double-blind treatment phase (last four weeks):

  • At least 4 attempts at sexual intercourse on 4 separate days during the open-label run-in phase with use of 20 mg vardenafil approximately 1 hour before attempting intercourse
  • IIEF EF (International Index of Erectile Function - Erectile Function subscale) score <17
  • At least 50% of attempts at sexual intercourse during the open-label run-in phase were unsuccessful

Exclusion Criteria:

• Contraindication to use of vardenafil
• History of prostatectomy due to prostate cancer, including nerve-sparing techniques.
• Concomitant use of adrenergic blockers
• History of spinal cord injury
• Resting hypotension, i.e. SBP (Systolic Blood Pressure) <100 mmHg at rest
• Moderate / severe hypertension, i.e. SBP >170 mmHg or DBP >110 mmHg at rest
• Symptomatic orthostatic hypotension with a decrease in SBP >20 mmHg or in DBP (Diastolic Blood Pressure) >10 mmHg subsequent to change from the supine to standing position

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Arm 2	Drug: Vardenafil; Treatment with 3 tablets once daily for 4 weeks (Vardenafil 20 mg)
Experimental: Arm 1	Drug: BAY60-4552 plus Vardenafil; Treatment with 3 tablets once daily for 4 weeks (Vardenafil 10 mg plus BAY60-4552 1.0 mg)
Placebo Comparator: Arm 3	Drug: Placebo; Treatment with 3 tablets once daily for 4 weeks (Placebo)

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Severity of erectile dysfunction assessed by the IIEF-EF (International Index of Erectile Function - Erectile Function subscale)	Week 4

Secondary Outcome Measures

Outcome Measure	Time Frame
Success rate assessed by subject diary question: 'Maintenance' (Did your erection last long enough to have sexual intercourse?)	Week 4
Success rate assessed by subject diary question: Penetration' (Were you able to insert your penis into your partner's vagina?)	Week 4

Collaborators and Investigators

• Sponsor: Bayer

Publications and helpful links

Helpful Links

• Click here and search for information of Bayer products for Europe

Study record dates

Study Major Dates

• Study Start: August 1, 2010
• Primary Completion (Actual): May 1, 2011
• Study Completion (Actual): May 1, 2011

Study Registration Dates

• First Submitted: July 22, 2010
• First Submitted That Met QC Criteria: July 22, 2010
• First Posted (Estimate): July 23, 2010

Study Record Updates

• Last Update Posted (Estimate): November 4, 2014
• Last Update Submitted That Met QC Criteria: November 3, 2014
• Last Verified: November 1, 2014

More Information

Terms related to this study

• Keywords: Phosphodiesterase inhibitors; Combination Drug Therapy
• Additional Relevant MeSH Terms: Mental Disorders; Sexual Dysfunctions, Psychological; Sexual Dysfunction, Physiological; Erectile Dysfunction; Molecular Mechanisms of Pharmacological Action; Vasodilator Agents; Urological Agents; Enzyme Inhibitors; Phosphodiesterase Inhibitors; Phosphodiesterase 5 Inhibitors; Vardenafil Dihydrochloride
• Other Study ID Numbers: 14694; 2010-020122-18 (EudraCT Number)