PMID- 34734510 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231108 IS - 2092-7355 (Print) IS - 2092-7363 (Electronic) IS - 2092-7355 (Linking) VI - 13 IP - 6 DP - 2021 Nov TI - Skin Test Results and Cross-Reactivity Patterns in IgE- and T-Cell-Mediated Allergy to Gadolinium-Based Contrast Agents. PG - 933-938 LID - 10.4168/aair.2021.13.6.933 [doi] AB - Allergies to gadolinium-based contrast agents (GBCAs) are rare and manifest usually as an immediate drug hypersensitivity reaction (DHR), compatible with an immunoglobulin E (IgE)-mediated mechanism. Although the molecular structures of GBCA show some similarities and are either linear or macrocyclic, the frequency and pattern of cross-reactivity remain unclear. However, cross-reactivity has been described. The aim of this investigation was to assess cross-reactivity in patients with GBCA allergy based on skin tests and exposure. We retrospectively evaluated a total of 28 cases with a proven allergy to a GBCA, including 11 from the database of the allergy division of the Inselspital, Bern and 17 published cases from the literature, retrieved with a PubMed-MEDLINE search. The majority of cases were immediate DHR, with 8/11 cases from the database (72.7%) and 16/17 published cases (94.1%). In both groups macrocyclic GBCA were most often identified as causative drugs. A cross-reactivity based on skin test results was found in 2 out of 11 database cases (18.2%) and in 6 out of 17 literature cases (35.3%). Cross-reactivity occurred within macrocyclic GBCA in 1/11 database cases and 3/17 literature cases, and included both macrocyclic and linear GBCA in 1/11 and 4/17 subjects. There was no cross sensitization among linear GBCA. Skin test-negative GBCA were well tolerated, even in cases with sensitization to linear and macrocyclic GBCA. Overall, cross-reactivity in GBCA allergy is rare (approximately 29%), and may occur among macrocyclic GBCA or in between macrocyclic and linear GBCA. IgE to linear GBCA seems to be rarely cross-reactive. Skin test is helpful in identifying safe alternatives, as no reaction to skin test-negative GBCA was observed. CI - Copyright (c) 2021 The Korean Academy of Asthma, Allergy and Clinical Immunology * The Korean Academy of Pediatric Allergy and Respiratory Disease. FAU - Grueber, Hans-Peter AU - Grueber HP AD - Radiology Division, Spital Region Oberaargau, Spital Langenthal, Langenthal, Switzerland. FAU - Helbling, Arthur AU - Helbling A AD - Division of Allergology and Clinical Immunology, Department of Pneumology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Joerg, Lukas AU - Joerg L AUID- ORCID: 0000-0003-1512-4279 AD - Division of Allergology and Clinical Immunology, Department of Pneumology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. lukas.joerg@insel.ch. LA - eng PT - Journal Article PL - Korea (South) TA - Allergy Asthma Immunol Res JT - Allergy, asthma & immunology research JID - 101518382 PMC - PMC8569030 OTO - NOTNLM OT - Gadolinium-based contrast agent (GBCA) OT - IgE OT - T-cell OT - allergy OT - anaphylaxis OT - contrast media OT - cross-reaction OT - drug hypersensitivity OT - skin test COIS- There are no financial or other issues that might lead to conflict of interest. EDAT- 2021/11/05 06:00 MHDA- 2021/11/05 06:01 PMCR- 2021/11/01 CRDT- 2021/11/04 06:46 PHST- 2020/10/08 00:00 [received] PHST- 2021/03/06 00:00 [revised] PHST- 2021/03/23 00:00 [accepted] PHST- 2021/11/04 06:46 [entrez] PHST- 2021/11/05 06:00 [pubmed] PHST- 2021/11/05 06:01 [medline] PHST- 2021/11/01 00:00 [pmc-release] AID - 13.933 [pii] AID - 10.4168/aair.2021.13.6.933 [doi] PST - ppublish SO - Allergy Asthma Immunol Res. 2021 Nov;13(6):933-938. doi: 10.4168/aair.2021.13.6.933.