Satralizumab, sold under the brand name Enspryng, is a humanized monoclonal antibody medication that is used for the treatment of neuromyelitis optica spectrum disorder (NMOSD), a rare autoimmune disease. The drug is being developed by Chugai Pharmaceutical, a subsidiary of Roche.The most common side effects include the common cold (nasopharyngitis), headache, upper respiratory tract infection, inflammation of the lining of the stomach, rash, joint pain, extremity pain, fatigue and nausea.Satralizumab regulates inflammation by inhibiting the interleukin-6 (IL-6) receptor, a key mediator of the immune response.The U.S. Food and Drug Administration (FDA) considers it to be a first-in-class medication. Medical uses
Satralizumab is indicated for the treatment of neuromyelitis optica spectrum disorder (NMOSD) in adults with a particular antibody – people who are anti-aquaporin-4 or AQP4 antibody-positive.NMOSD is a rare autoimmune disease of the central nervous system that mainly affects the optic nerves and spinal cord. In people with NMOSD, the bodys immune system mistakenly attacks healthy cells and proteins in the body, most often those in the optic nerves and spinal cord. Individuals with NMOSD typically have attacks of optic neuritis, which causes eye pain and vision loss. Approximately 50% of people with NMOSD have permanent visual impairment and paralysis caused by NMOSD attacks. Estimates vary, but NMOSD is thought to impact approximately 4,000 to 8,000 Americans.NMOSD can be associated with antibodies that bind to a protein called aquaporin-4 (AQP4). Binding of the anti-AQP4 antibody appears to activate other components of the immune system, causing inflammation and damage to the central nervous system.
Abrocitinib, sold under the brand name Cibinqo, is a Janus kinase inhibitor medication used for the treatment of atopic dermatitis (eczema). It was developed by Pfizer. Medical uses
Abrocitinib is indicated for the treatment of moderate-to-severe atopic dermatitis in adults who are candidates for systemic therapy. Side effects
The most common adverse effects in studies were upper respiratory tract infection, headache, nausea, and diarrhea. Pharmacology
Mechanism of action
It is a selective inhibitor of the enzyme janus kinase 1 (JAK1). Pharmacokinetics
Abrocitinib is quickly absorbed from the gut and generally reaches highest blood plasma concentrations within one hour. Only 1.0 to 4.4% of the dose are found unmetabolized in the urine. History
April 2016: initiation of Phase 2b trial
December 2017: initiation of JADE Mono-1 Phase 3 trial
May 2018: Results of Phase 2b trial posted
October 2019: Results of Phase 3 trial presented
June 2020: Results of second Phase 3 trial published

Society and culture
Legal status
In October 2021, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) adopted a positive opinion, recommending the granting of a marketing authorization for the medicinal product Cibinqo, intended for the treatment of atopic dermatitis. The applicant for this medicinal product is Pfizer Europe MA EEIG. In December 2021, the European Commission approved abrocitinib for the treatment of atopic dermatitis.In January 2022, the United States Food and Drug Administration (FDA) approved abrocitinib for adults with moderate-to-severe atopic dermatitis. References
External links
"Abrocitinib". Drug Information Portal. U.S. National Library of Medicine.