Inhibition of T-cell activity in alopecia areata: recent developments and new directions
Passeron T, King B, Seneschal J, Steinhoff M, Jabbari A, Ohyama M, Tobin D, Randhawa S, Winkler A, Telliez J, Martin D, Lejeune A. Inhibition of T-cell activity in alopecia areata: recent developments and new directions. Frontiers In Immunology 2023, 14: 1243556. PMID: 38022501, PMCID: PMC10657858, DOI: 10.3389/fimmu.2023.1243556.Peer-Reviewed Original ResearchConceptsT cell-signaling pathwaysAlopecia areataT cellsEtiopathogenesis of AAPathogenesis of AATreatment of AAImmune privilege collapseOnly US FoodHair folliclesSevere alopecia areataT cell activityT cell receptor recognitionLoss of scalpSystemic medicationsAA therapyCytotoxic CD8Inflammatory pathogenesisAutoimmune diseasesTreatment optionsHair lossLimited efficacyTherapeutic pathwaysClinical developmentJAK inhibitionUS FoodEfficacy and safety of ritlecitinib in adults and adolescents with alopecia areata: a randomised, double-blind, multicentre, phase 2b–3 trial
King B, Zhang X, Harcha W, Szepietowski J, Shapiro J, Lynde C, Mesinkovska N, Zwillich S, Napatalung L, Wajsbrot D, Fayyad R, Freyman A, Mitra D, Purohit V, Sinclair R, Wolk R. Efficacy and safety of ritlecitinib in adults and adolescents with alopecia areata: a randomised, double-blind, multicentre, phase 2b–3 trial. The Lancet 2023, 401: 1518-1529. PMID: 37062298, DOI: 10.1016/s0140-6736(23)00222-2.Peer-Reviewed Original ResearchConceptsAlopecia areataPrimary endpointWeek 24Loading doseExtension periodBaseline disease severitySuitable treatment optionScalp hair lossPatients placeboPlacebo groupWeek 48Systemic therapyAlopecia ToolTreatment optionsPlaceboHair lossPatientsAreataResponse rateDisease severityKinase inhibitorsBody hairMulticentreAfrican AmericansTreatment