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Physiopathology of Rapid Aspirin Desensitization

This study has been completed.
Information provided by (Responsible Party):
Assistance Publique - Hôpitaux de Paris Identifier:
First received: March 31, 2010
Last updated: September 28, 2016
Last verified: February 2015
Aspirin is very effective in protecting patients with coronary artery disease against adverse cardiac events, because it is a potent "antiplatelet agent". Some patients may develop a history of hypersensitivity to aspirin and treatment cannot usually be resumed in these patients. We have developed a rapid procedure to induce tolerance in these patients (SILBERMAN et al, Am J CARDIOL 2005;95:509-10) and wish to test whether aspirin is as effective as antiplatelet agent in patients with a history of allergy to aspirin and who undergo desensitization as it is in patients without history of hypersensitivity

Coronary Artery Disease

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Physiopathology of Rapid Aspirin Desensitization in Patients With Coronary Artery Disease and a History of Hypersensitivity to Aspirin or NSAIDs

Resource links provided by NLM:

Further study details as provided by Assistance Publique - Hôpitaux de Paris:

Primary Outcome Measures:
  • Platelet aggregation in response to arachidonic acid Basophil activation tests Platelet aggregation in response to arachidonic acid Basophil activation tests [ Time Frame: day 1, after aspirin desensitization ]

Biospecimen Retention:   Samples Without DNA
plasma and urine

Enrollment: 86
Study Start Date: February 2007
Study Completion Date: June 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
controls 2
patient without CAD, not on aspirin and without history of hypersensitivity
case of hypersensitivity
patient with CAD on aspirin, with a history of hypersensitivity
controls 1
patient with CAD on aspirin, without history of hypersensitivity

Detailed Description:

Previous studies in allergology have proved the safety of desensitization procedures in allergic patients with an imperative indication for a medication. This tolerance state is usually obtained after a cumbersome procedure requiring several hours to days. We have adapted successfully such a procedure to the patients with acute coronary artery disease requiring urgent aspirin (excluding the ST elevation myocardial infarction) (SILBERMAN et al, Am J CARDIOL 2005;95:509-10).

Patients with a history of Aspirin or NonSteroidal Anti-Inflammatory Drugs hypersensitivity appear to have alterations of eicosanoid metabolism : these drugs trigger an imbalance toward the leucotriene pathway. This case-control study aims to

  • evaluate after desensitization therapy the anti-aggregant effect of aspirin in these very particular patients : clinical outcome, PFA test, levels of the urinary metabolite of thromboxane A2 (11 dehydro thromboxane B2) and also usual aggregation tests.
  • assess the in VITRO basophil activation induced by aspirin before and after desensitization procedure by flow cytometric cellular allergen test using basophils surface marker and mediators' dosage. Before the challenge procedure these tests aim to confirm the clinically established diagnosis of hypersensitivity. After desensitization, these tests intend to better assess the efficiency of the induced tolerance, to attempt to identify predictors of successful desensitization as well as identify potential cross reactivity with other NSAIDs..

This procedure is indicated in all patients with aspirin or NSAID intolerance with imperative cardiological indications for aspirin, such as acute coronary syndrome, or placement of a stent. The desensitization procedure must be performed in a coronary care unit; the patients are duly informed about benefits and risks of the challenge and provide written informed consent. Desensitization consists in rapidly escalating aspirin dose administration with ad hoc aspirin capsules prepared by the hospital pharmacist. Blood and urinary samples are obtained during the hospital stay for coronary and desensitization care. An additional blood and urine sample will be obtained 6 to 8 weeks later during an outpatient visit in the laboratory. Initial biological data will be compared to those of two control groups matched for age, gender and type of acute coronary syndrome :

  • Controls 1: patients with CAD on aspirin, without history of hypersensitivity
  • Controls 2: patients without CAD, not on aspirin and without history of hypersensitivity.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with coronary artery disease and a history of aspirin hypersensitivity, requiring treatment with aspirin , referred to an academic tertiary center for desensitization


  • Age > 18 years
  • Admitted to Hospital BICHAT, in Cardiology
  • Patients with aspirin or NSAID intolerance due to hypersensitivity
  • Imperative cardiological indications for aspirin, such as acute coronary syndrome, or placement of a stent
  • Written informed consent
  • Patient with health insurance coverage


  • Ongoing ST elevation acute coronary syndrome
  • Ongoing signs or symptoms of hypersensitivity or allergy (asthma, urticaria, Quincke' edema, or other allergic symptoms)
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Please refer to this study by its identifier: NCT01118546

Centre hospitalier Bichat Claude Bernard
Paris,, France, 75018
Sponsors and Collaborators
Assistance Publique - Hôpitaux de Paris
Principal Investigator: Gabriel STEG, Pr APHP
  More Information

Additional Information:
Responsible Party: Assistance Publique - Hôpitaux de Paris Identifier: NCT01118546     History of Changes
Other Study ID Numbers: P051026
Study First Received: March 31, 2010
Last Updated: September 28, 2016

Keywords provided by Assistance Publique - Hôpitaux de Paris:
coronary artery disease
Platelet aggregation

Additional relevant MeSH terms:
Coronary Artery Disease
Myocardial Ischemia
Coronary Disease
Heart Diseases
Cardiovascular Diseases
Arterial Occlusive Diseases
Vascular Diseases
Immune System 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
Antipyretics processed this record on April 28, 2017