November 2025 in “Biomedicines” This study found that the JAK1 inhibitors baricitinib and abrocitinib significantly reduced mechanical alloknesis in a murine model of atopic dermatitis, whereas the JAK2 inhibitor AZ960 had no effect.
JAK inhibitors effectively regrow hair in alopecia areata but hair loss often returns after stopping treatment.
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April 2021 in “JCI insight” In this study, selective inhibition of JAK3 signaling effectively prevented and reversed alopecia areata in a mouse model, while JAK2 inhibitors did not restore hair growth.
November 2025 in “Journal of Investigative Dermatology” Combining MMP-9 and JAK inhibitors can effectively prevent skin depigmentation in vitiligo.
May 2024 in “Archives of dermatological research” This study found that Enz_MoriL, a compound derived from Morus alba L., promotes hair follicle cell proliferation by affecting the Wnt/β-catenin pathway and can counteract an alopecia areata-like condition by suppressing the JAK-STAT signaling in human hair follicle dermal papilla cells.