title: Infliximab monotherapy as first-line treatment for adult-onset pityriasis rubra pilaris: case report and review of the literature on biologic therapy.
abstract: Pityriasis rubra pilaris (PRP) is a rare, chronic papulosquamous disorder of unknown etiology that often progresses to disabling palmoplantar keratoderma and erythroderma. There is currently no universally effective treatment for PRP, and some cases are resistant to multiple topical and systemic therapies. Systemic retinoids, methotrexate, several immunosuppressive agents, fumaric acid esters, stanozolol, and phototherapy have all been used with varying degrees of success. Recently, a few reports have appeared in the literature concerning the use of biologics in combination therapies and/or in refractory PRP cases. We report a case of type I adult-onset PRP successfully treated with infliximab monotherapy as initial systemic therapy, and provide a comprehensive literature review on biologic therapy for PRP. The complete and persistent response to infliximab in our patient and in the previously reported cases confirms a role for anti-tumor necrosis factor-alfa therapy as an effective option in the treatment of PRP. Further studies are warranted to evaluate possible differences in efficacy among the different biologics.
authors.affiliation: Department of Dermatology and Venerology, Innsbruck Medical University, Innsbruck, Austria. hansgeorg.mueller@uki.at
authors.forename: Hansgeorg
authors.initials: H
authors.lastname: Müller
authors.forename: Cornelia
authors.initials: C
authors.lastname: Gattringer
authors.forename: Bernhard
authors.initials: B
authors.lastname: Zelger
authors.forename: Reinhard
authors.initials: R
authors.lastname: Höpfl
authors.forename: Klaus
authors.initials: K
authors.lastname: Eisendle
mesh_terms: D000328:Adult; D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D006801:Humans; D000069285:Infliximab; D008297:Male; D010916:Pityriasis Rubra Pilaris / Q000188:drug therapy* / Q000473:pathology; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors
chemical_list: D000911:Antibodies, Monoclonal; D014409:Tumor Necrosis Factor-alpha; D000069285:Infliximab