Biotechnology Although topical Janus kinase (JAK) inhibitors were expected to become a major force in the atopic dermatitis (AD) space, the class of drugs suffered a major setback last year, when a US Food and Drug Administration review of a large clinical trial led the agency to conclude that JAK inhibitors lead to an increased risk of serious heart-related events such as heart attack or stroke, cancer, blood clots, and death. 11 January 2022