Janus Kinase Inhibitors in Dermatology : Part 1 - General Considerations and Applications in Vitiligo and Alopecia Areata Inhibidores de JAK: usos en dermatología. Parte 1: generalidades, aplicaciones en vitíligo y en alopecia areata

Dermatologists' interest in the Janus-associated kinase/signal transducers and activators of transcription (JAK/STAT) pathway has been growing as evidence builds to support its key role in the pathogenesis of inflammatory skin diseases. Because certain proinflammatory cytokines use the JAK/STAT pathway for signal transduction, it has become a promising therapeutic target in diseases where selective modulation of the immune system can be useful. We aim to review current knowledge of the JAK/STAT signaling pathway and its role in immune-mediated skin diseases. In the first part of the review we cover the efficacy and safety of oral and topical JAK inhibitors in the treatment of vitiligo and alopecia areata.