We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov Menu

Comparison of Phenprocoumon and Acetylsalicylic Acid (ASA)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: October 31, 2008
Last Update Posted: September 23, 2015
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
RWTH Aachen University
In this open, prospective, non-randomised, parallel group, unicentric pilot-study will be compared the progress of valvular and coronary calcification with regard to the therapy with either acetyl-salicylic acid or phenprocoumon. The progress of calcification is documented by comparison of cardial stratified computed tomography. It is supposed that treatment with phenprocumon leads to increased coronary and valvular calcification as well to decreased blood levels of carboxylated matrix-GLA-protein

Valvular Calcification Coronary Calcification

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Prospective Comparison of Phenprocoumon (Marcumar) and Acetylsalicylic Acid (ASA)With Regard to the Progress of Valvular and Coronary Calcification

Resource links provided by NLM:

Further study details as provided by RWTH Aachen University:

Primary Outcome Measures:
  • Progression of coronary and valvular calcification confirmed by computed tomography [ Time Frame: 18 months ]

Secondary Outcome Measures:
  • Measurement of inhibitors of calcification and biomarkers for inflammation (blood samples), evaluation of the haemodynamic progress as well as dyastolic dysfunction (echocardiography) [ Time Frame: 18 months ]

Biospecimen Retention:   Samples Without DNA
Biomarkers for inflammation, measuring of inhibitors of calcification

Enrollment: 157
Study Start Date: February 2008
Study Completion Date: August 2015
Primary Completion Date: August 2015 (Final data collection date for primary outcome measure)
patients with required new anticoagulation with phenprocoumon 1/2 of them with a GFR< 60 ml/min and >15 ml/min
patients with required therapy with ASS, 1/2 of them with a GFR <60 ml/min and >15 ml/min

Detailed Description:

Patients will be allocated to two groups with either

  1. anticoagulation with phenprocoumon (needed for at least 1 year)
  2. therapy with ASA

Both treatment groups should include to 50% patients with a glomerular filtration rate (GFR) < 60 ml/min and > 15 ml/min.

All patients will undergo a screening procedure with evaluation of calcium regulating proteins, echocardiography and stratified computed tomography of the heart. Medical check up's are planned after 1,3,6, 12 and 18 months.

Prior investigations concern diastolic ventricular function under long lasting therapy with phenprocoumon and the influence of long lasting therapy with phenprocoumon in patients suffering from aortic valve sclerosis.


Information from the National Library of Medicine

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, Learn About Clinical Studies.

Ages Eligible for Study:   50 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with required therapy with either ASS or phenprocoumon

Inclusion Criteria:

  • 60 patients with new onset of anticoagulation therapy with phenprocoumon for the expectant duration of at least one year
  • BMI 19-27 kg/qm
  • Mental ability and capacity to understand and follow the instructions of the investigator
  • Written informed consent

Exclusion Criteria:

  • Patients not fulfilling the inclusion criteria or with:

    • renal failure grade IV or V
    • acute cardial or pulmonary decompensation
    • women of childbearing age, pregnant or breastfeeding women
    • psychiatric diseases
    • life expectancy < 1 year
    • acute lifethreatening situations
    • participation in other studies
    • persons in dependency from the sponsor or working with the sponsor
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00782743

Department of Medicine, Division of Cardiology, Pulmonology and Vascular Medicine
Aachen, NRW, Germany, 52074
Sponsors and Collaborators
RWTH Aachen University
Principal Investigator: Vincent Brandenburg, Prof. RWTH Aachen University Departement of Cardiology, Pulmonology and Vascular Medicine
  More Information

Responsible Party: RWTH Aachen University
ClinicalTrials.gov Identifier: NCT00782743     History of Changes
Other Study ID Numbers: Marcumar-ASS-Study
Eudra-CT-Number 2007-001685-33
Study-Number 07/002
First Submitted: October 29, 2008
First Posted: October 31, 2008
Last Update Posted: September 23, 2015
Last Verified: September 2015

Keywords provided by RWTH Aachen University:
acetylic salicylic acid
Need for new anticoagulation treatment

Additional relevant MeSH terms:
Calcium Metabolism Disorders
Metabolic Diseases
Anti-Inflammatory Agents, Non-Steroidal
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Inflammatory Agents
Antirheumatic Agents
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Platelet Aggregation Inhibitors
Cyclooxygenase Inhibitors
Enzyme Inhibitors