Challenge Test for Acetylsalicylic Acid Hypersensitivity
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Purpose
The investigators want to find new challenge test for Acetylsalicylic hypersensitivity / Aspirin hypersensitivity. The investigators suggest that this new test will be as efficient as the already established protocols in terms of sensitivity and specificity.
| Condition | Intervention |
|---|---|
|
Asthma Aspirin-sensitive ASA Intolerant Asthma Asthma, Aspirin-Induced Asthma, Nasal Polyps, and Aspirin Intolerance |
Drug: Acetylsalicylate Drug: Isotonic NaCl |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Single Group Assignment Masking: Double Blind (Subject, Investigator) Primary Purpose: Diagnostic |
| Official Title: | Challenge Test for Acetylsalicylic Acid Hypersensitivity |
- Inspiratory nasal flow measured by Rhinomanometry [ Time Frame: Within 45 min from challenge ] [ Designated as safety issue: No ]Bilateral flow reduction >40% considered positive test.
- Expiratory nasal flow measured by Rhinomanometry [ Time Frame: Within 45 min from challenge ] [ Designated as safety issue: No ]Bilateral expiratory flow reduction >40% considered positive.
- Pulmonary forced expiratory volume in 1 second (FEV1) [ Time Frame: Within 45 min from challenge ] [ Designated as safety issue: No ]Reduction in FEV1 >20% is considered as positive test.
- Conjunctival symptoms [ Time Frame: Within 45 days from challenge ] [ Designated as safety issue: No ]
0=no symptoms, 1=limited redness and / or itching, 2=conjunctival redness and /or itching / swelling or bullae within 5 minutes from testing.
Value 1 and 2 is considered positive if unilateral.
- Nasal symptoms [ Time Frame: Within 45 minutes from challenge ] [ Designated as safety issue: No ]Rhinorrhea, congestion and sneezing is considered as positive test.
- Bronchial and laryngeal symptoms [ Time Frame: Within 45 minutes from challenge ] [ Designated as safety issue: Yes ]Bronchospasm. tight chest, wheezing or laryngospasm is considered as positive test.
- Other significant and relevant symptoms [ Time Frame: Within 45 days after challenge ] [ Designated as safety issue: Yes ]Erythema in upper body or face, nausea or abdominal pain is considered as positive test.
| Estimated Enrollment: | 50 |
| Study Start Date: | September 2012 |
| Estimated Study Completion Date: | December 2013 |
| Estimated Primary Completion Date: | March 2013 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Active Comparator: Acetylsalicylate
Acetylsalicylic Acid Eyedrops
|
Drug: Acetylsalicylate
1-2 drops
|
|
Placebo Comparator: isotonic NaCl
Saline Eyedrops
|
Drug: Isotonic NaCl
1 drop
|
Detailed Description:
Hypersensitivity to Acetylsalicylic Acid or Aspirin (and other NSAIDS) is a condition that affects up to 2,5% of the population. Most cases are seen in a complex of such hypersensitivity with chronic eosinophilic rhinosinusitis with nasal polyposis and asthma. Despite research in finding a reliable in-vitro-test for the condition, challenge tests are still considered gold standard. So far oral, nasal, inhalation and intravenous routes of administration has been described in literature.
Eligibility| Ages Eligible for Study: | 18 Years to 60 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Persons between 18 and 60 years of age
- Suspected Acetylsalicylic Acid Hypersensitivity
Exclusion Criteria:
- History on anaphylactic shock after NSAIDS intake
- History on gastric ulcer after NSAIDS intake
- Patients previously gone through testing or desensitisation for Aspirin hypersensitivity
- Clinical unstable asthma or baseline FEV1<70%
- Severe disease of the heart, digestive tract, liver or kidney
- Severe chronic urticaria
- Present conjunctivitis
- Pregnancy
Contacts and Locations| Contact: Gregor Bachmann-Harlidstad, MD, PhD | 0047 02900 (central) | Gregor.Bachmann-Harlidstad2@ahus.no |
| Contact: Jörg Törpel, MD | 0047 05151 (central) | jörg.törpel@sus.no |
| Norway | |
| Akershus University Hospital | Not yet recruiting |
| Lørenskog, Akershus, Norway, 1478 | |
| Contact: Gregor Bachmann-Harlidstad, MD, PhD 0047 02900 (central) gregor.bachmann.harlidstad2@ahus.no | |
| Contact: Mohammad Sohrabi, MD 0047 02900 (central) mohammad.sohrabi@ahus.no | |
| Principal Investigator: Gregor Bachmann-Harildstad, MD, PhD | |
| Sub-Investigator: Mohammad Sohrabi, MD | |
| Stavanger University Hospital | Not yet recruiting |
| Stavanger, Rogaland, Norway, 4068 | |
| Contact: Anders Torp, MD 0047 05151 (central) anders.torp@sus.no | |
| Contact: Jörg Törpel, MD 0047 05151 (central) jörg.törpel@sus.no | |
| Sub-Investigator: Anders Torp, MD | |
| Sub-Investigator: Jörg Törpel, MD | |
| Study Chair: | Gregor Bachmann-Harildstad, MD, PhD | University in Oslo |
More Information
Publications:
| Responsible Party: | Helse Stavanger HF |
| ClinicalTrials.gov Identifier: | NCT01681615 History of Changes |
| Other Study ID Numbers: | ASA-ST-OS, 2012-000698-22 |
| Study First Received: | August 9, 2012 |
| Last Updated: | September 12, 2012 |
| Health Authority: | Norway: Norwegian Medicines Agency Norway: Ethics Committee |
Keywords provided by Helse Stavanger HF:
|
Challenge test for Aspirin Hypersensitivity Challenge test for Acetylsalicylic Hypersensitivity |
Additional relevant MeSH terms:
|
Asthma Asthma, Aspirin-Induced Hypersensitivity Nasal Polyps Bronchial Diseases Respiratory Tract Diseases Lung Diseases, Obstructive Lung Diseases Respiratory Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Nose Diseases Otorhinolaryngologic Diseases Polyps Pathological Conditions, Anatomical |
Drug Hypersensitivity Aspirin Anti-Inflammatory Agents, Non-Steroidal Analgesics, Non-Narcotic Analgesics Sensory System Agents Peripheral Nervous System Agents Physiological Effects of Drugs Pharmacologic Actions Anti-Inflammatory Agents Therapeutic Uses Antirheumatic Agents Fibrinolytic Agents Fibrin Modulating Agents Molecular Mechanisms of Pharmacological Action |
ClinicalTrials.gov processed this record on May 16, 2013