Volume 10 Supplement 1

Canadian Society of Allergy and Clinical Immunology Annual Scientific Meeting 2013

Open Access

Specific IgEs passively transferred through a platelet transfusion caused two discrete allergic reactions to food

  • Joyce CY Ching1Email author,
  • Wendy Lau2, 3,
  • Barbara Hannach3 and
  • Julia EM Upton4
Allergy, Asthma & Clinical Immunology201410(Suppl 1):A18

https://doi.org/10.1186/1710-1492-10-S1-A18

Published: 3 March 2014

Background

An unusual cause of an allergic reaction to food is the passive transfer of specific IgE through blood product transfusions. We report two separate allergic reactions due to passive transfer of food specific IgE from a pooled platelet transfusion.

Case report

A non-atopic 8 year old boy received multiple blood product transfusions as part of his treatment for meduloblastoma. He subsequently experienced anaphylaxis to salmon. Within minutes of eating salmon, he developed angioedema of the lip, facial erythema, throat discomfort and low blood pressure. Before this episode, he regularly ate fish with no reaction. The passive transfer of food specific IgE was suspected and he was advised to carry an epinephrine auto-injector and avoid all vertebrate fish. Specific IgE to salmon by ImmunoCAP was positive. Follow-up was arranged to follow his specific IgE to salmon with the expectation that his allergy would resolve. One week after his anaphylactic episode to fish, he developed an allergic reaction to peanuts. He ate a chocolate peanut butter cup and within 10 minutes he vomited, developed angioedema of the lip and experienced lethargy. Previously, he routinely ate peanuts without any symptoms. Skin prick testing showed positive results to peanut, salmon, mixed fish, and tree nut mix. He had a positive ImmunoCAP to peanut. Approximately 6 months later, he had undetectable ImmunoCAP results to both salmon and peanut. He resumed consumption of salmon and peanuts with no reaction. As part of the adverse event investigation by Canadian Blood Services all donors associated with the reaction were contacted and one donor stated that they have a severe allergy to peanuts, tree nuts, shellfish, and all fish including salmon. This information implicated one specific pooled platelet transfusion in which the platelets were suspended in the plasma of the atopic donor. The donor has been excluded from future donations.

Conclusions

To our knowledge, this is the first reported case of two allergic reactions to food documented to be caused by passive transfer of food-specific IgE from pooled platelets. This case shows that if a passive allergy from a transfusion occurs, consideration should be given to look for additional passively transferred specific IgE. Knowledge of the allergies in the blood donors can assist in the investigations and avoidance instructions.

Authors’ Affiliations

(1)
Department of Pediatrics, Rouge Valley Health System
(2)
Transfusion Medicine, Pediatric Laboratory Medicine, University of Toronto, Hospital for Sick Children
(3)
Canadian Blood Services
(4)
Department of Pediatrics, Division of Clinical Immunology and Allergy, University of Toronto, Hospital for Sick Children

Copyright

© Ching et al; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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