• Bethsabée Garel, Saskia Ingen-Housz-Oro, Daniele Afriat, Catherine Prost-Squarcioni, Florence Tétart, Benoit Bensaid, Corina Bara Passot, Marie Beylot-Barry, Vincent Descamps, Sophie Duvert-Lehembre, Sabine Grootenboer-Mignot, Géraldine Jeudy, Angèle Soria, Marie Blanche Valnet-Rabier, Annick Barbaud, Frédéric Caux, and Bénédicte Lebrun-Vignes.
• Department of Dermatology, Assistance Publique-Hôpitaux de Paris (APHP), Henri-Mondor Hospital, 94010, Créteil, France.
• Br J Clin Pharmacol. 2019 Mar 1; 85 (3): 570-579.

AimsLinear immunoglobin A (IgA) bullous dermatosis is a rare autoimmune dermatosis considered spontaneous or drug-induced (DILAD). We assessed all DILAD cases, determined the imputability score of drugs and highlighted suspected drugs.MethodsData for patients with DILAD were collected retrospectively from the French Pharmacovigilance network (from 1985 to 2017) and from physicians involved in the Bullous Diseases French Study Group and the French Investigators for Skin Adverse Reactions to Drugs. Drug causality was systematically determined by the French imputability method.ResultsOf the 69 patients, 42% had mucous membrane involvement, 20% lesions mimicking toxic epidermal necrolysis (TEN), 21% eosinophil infiltrates and 10% keratinocytes necrosis. Direct immunofluorescence, in 80%, showed isolated linear IgA deposits. Vancomycin (VCM) was suspected in 39 cases (57%), 11 had TEN-like lesions, as compared with three without VCM suspected. Among the 33 patients with a single suspected drug, 85% had an intrinsic imputability score of I4. Among them, enoxaparin, minocycline and vibramycin were previously unpublished. For all patients, the suspect drug was withdrawn; 15 did not receive any treatment. First-line therapy for 31 patients was topical steroids. Among the 60 patients with available follow-up, 52 achieved remission, 10 without treatment. Four patients experienced relapse, four died and five had positive accidental rechallenges.ConclusionsThere is no major clinical difference between DILAD and idiopathic linear IgA bullous dermatosis, but the former features a higher prevalence of patients mimicking TEN. VCM, suspected in more than half of the cases, might be responsible for more severe clinical presentations. We report three new putative drugs.© 2018 The British Pharmacological Society.

39 keywords...

hide…