期刊
BRITISH JOURNAL OF HAEMATOLOGY
卷 196, 期 6, 页码 1311-1328出版社
WILEY
DOI: 10.1111/bjh.17872
关键词
idiopathic thrombocytopenic purpura; neonatal Fc receptor; Bruton kinase; anti-CD38; complement
类别
Current therapies for ITP are successful in most patients, but some require new approaches. Novel therapies focus on reducing anti-platelet antibody production or inhibiting the phagocytic system to decrease platelet destruction.
Current therapies for immune thrombocytopenia (ITP) are successful in providing a haemostatic platelet count in over two-thirds of patients. Still, some patients have an inadequate response and there is a need for other therapies. A number of novel therapies for ITP are currently being developed based upon the current pathophysiology of ITP. Many therapies are targetted at reducing platelet destruction by decreasing anti-platelet antibody production by immunosuppression with monoclonal antibodies targetted against CD40, CD38 and the immunoproteasome or physically reducing the anti-platelet antibody concentration by inhibition of the neonatal Fc receptor. Others target the phagocytic system by inhibiting Fc gamma R function with staphylococcal protein A, hypersialylated IgG, polymeric Fc fragments, or Bruton kinase. With a recognition that platelet destruction is also mediated by complement, inhibitors of C1s are also being tested. Inhibition of platelet desialylation may also play a role. Other novel therapies promote platelet production with new oral thrombopoietin receptor agonists or the use of low-level laser light to improve mitochondrial activity and prevent megakaryocyte apoptosis. This review will focus on these novel mechanisms for treating ITP and assess the status of treatments currently under development. Successful new treatments for ITP might also provide a pathway to treat other autoimmune disorders.
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