Alopecia areata universalis during off-label treatment with Infliximab in a patient with Behçet disease
Published Web Locationhttps://doi.org/10.5070/D331c9h7fx
Letter: Alopecia areata universalis during off-label treatment with Infliximab in a patient with Behçet disease1. Allergology and Clinical Immunology, Department of Biomedicine, University of Florence, Florence, Italy
E Beccastrini1, D Squatrito1, G Emmi1, P Fabbri2, L Emmi1
Dermatology Online Journal 16 (9): 15
2. Department of Dermatological Sciences, University of Florence, Italy
Infliximab, a chimeric monoclonal anti-TNF-alfa agent used to treat autoimmune diseases, has shown a paradoxical side effect in the development of autoimmunity. We describe a case of alopecia areata universalis associated with infliximab treatment in a patient with Behçet disease. This case suggests a complex and contradictory role of TNF-α in the pathogenesis of alopecia areata.
Six cases of alopecia areata (AA) in patients treated with infliximab have been reported in the literature (Table 1) [1-7]. We describe the first case of AA universalis that developed during infliximab treatment.
|Figure 1. (a) Alopecia areata universalis within 6 months after beginning of the hair loss. (b) Parietal and frontal region of scalp showing total hair loss. (c) A particular: bilateral eyelash alopecia. (d) Nail abnormalities.|
The patient is a 41-year-old man with Behçet disease (BD), whose diagnosis was performed on the basis of recurrent orogenital ulcerations, severe uveitis, asymmetrical arthrithis involving knees, and HLA-B51 allele positivity. The orogenital ulcerations and the ocular manifestations have been successfully treated with prednisolone and colchicine. After 6 months, a relapse with active eye disease was treated with corticosteroids and cyclosporine A (CSA), giving a rapid improvement. The withdrawl of glucocorticoids and maintaining CSA, however, allowed a relapse of the disease and treatment with azathioprine was attempted. Unfortunately, worsening of the visual impairment was observed. Therefore, infliximab was administred at a dose of 5 mg/kg, through intravenous infusion at weeks 0, 2, 6, and 8, then every 8 weeks. In a few weeks there was a marked improvement of the orogenital ulceration and of the posterior uveitis. Treatment with infliximab alone was continued with no relapse nor evidence of disease recurrence. After one year the patient suddenly developed multifocal, smooth patches of hair loss with short broken hairs at the periphery and nail dystrophy. The hair loss progressed resulting within 6 months in a typical form of AA universalis with nail abnormalities (Figure 1). There were neither discernable psychosomatic triggering factors, nor familiar or personal history of hair loss. The patient’s serum was negative for evidence of antinuclear antibodies. Infliximab treatment was discontinued and the patient was treated with clobetasol propionate 0.05 percent and topical minoxidil. Three months after infliximab discontinuation, a partial hair regrowth was observed.
Alopecia areata is an autoimmune inflammatory disease, in which T lymphocytes play a central pathogenetic role. Although the exact pathophysiology of AA remains unknown, it is postulated that CD4+ and CD8+ T cells reactive to hair bulb autoantigens induce the autoimmune process leading to non-scarring hair loss. Alopecia areata is frequently associated with other autoimmune diseases such as vitiligo, Hashimoto disease, rheumatoid arthritis, or insulin-dependent diabetes, but association with BD or vasculitis has not been described. The pathogenesis of AA was traditionally thought Th1-mediated .
This case suggests a complex and contradictory role of TNF-α in the pathogenesis of AA. Increased IL-1β, IFN-γ, IL-2, and TNF-α expression has been demonstrated in AA lesions and in vitro studies have shown that TNF-α and IL-1β were potent inhibitors of hair follicle growth. Therefore, TNF-α was considered to have an important role in the AA hair loss .
Strober et al, however, have shown no efficacy of anti-TNF-α agents in the treatment of AA . Moreover, although anti-TNF-α agents are expected to treat autoimmune-related processes similar to AA, these drugs have been associated with the development of other autoimmune diseases . Ettefagh et al proposed that TNF-α is not necessary for the development of inflammation in AA and that anti-TNF-α agents could cause a dysregulation of cytokines leading to inflammation .
The role of anti-TNF-α agents in the pathogenesis of autoimmune diseases and, more specifically, of AA remains mainly elusive. Future work will be required to distinguish exactly which factors link anti-TNF-α agents with the immune dysregulation that induces AA.
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