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Skin testing with bendamustine: what concentration should be used?

Laura Malinauskiene1, Kestutis Cerniauskas1, Kotryna Linauskiene1

  • 1Faculty of Medicine, Institute of Clinical Medicine, Clinic of Chest Diseases, Immunology and Allergology, Vilnius University, Santariškių str. 2, LT-08661 Vilnius, Lithuania.

Allergy, Asthma, and Clinical Immunology : Official Journal of the Canadian Society of Allergy and Clinical Immunology
|September 18, 2020
PubMed
Summary
This summary is machine-generated.

Bendamustine hypersensitivity reactions during chronic lymphocytic leukemia treatment are concerning. Recommended skin testing concentrations caused severe reactions in controls, questioning safety and diagnostic accuracy.

Keywords:
BendamustineControlsHypersensitivity reactionIntradermal tests

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Area of Science:

  • Oncology
  • Clinical Immunology
  • Pharmacology

Background:

  • Hypersensitivity reactions can occur during chemotherapy for chronic lymphocytic leukemia (CLL).
  • Bendamustine is a common chemotherapeutic agent used for CLL.
  • Assessing drug-induced hypersensitivity often involves skin testing.

Purpose of the Study:

  • To investigate a suspected hypersensitivity reaction to bendamustine in a CLL patient.
  • To evaluate the safety and reliability of current skin testing protocols for bendamustine allergy.

Main Methods:

  • A case report of a patient experiencing hypersensitivity during bendamustine treatment for CLL.
  • Skin testing was performed on the patient and three healthy controls.
  • Standardized bendamustine concentrations from previous studies were used for skin testing.

Main Results:

  • The patient exhibited a hypersensitivity reaction during bendamustine therapy.
  • All three controls developed severe local reactions to the recommended skin test concentrations.
  • The clinical significance of the patient's positive skin test remained uncertain.

Conclusions:

  • Current recommended skin testing concentrations for bendamustine allergy may not be safe.
  • The high reaction rate in controls raises concerns about the diagnostic validity and safety of these tests.
  • Further research is required to establish reliable and safe methods for diagnosing bendamustine allergy.