... compilation ª 2011 FEBSMINIREVIEWTEC family kinases in health and disease – loss -of- function of BTK and ITK and the gain -of- function fusions ITK–SYK and BTK–SYKAlamdar Hussain1,2,*, Liang Yu1,3,*, ... T-cell kinase (ITK) could in uence the infectivity of HIV and also have anti -in ammatory activity. Since 2006, several patients carry-ing a fusion protein, originating from a translocation joining ... providing the missing data.The phenotype of XLA and thepotential of BTK and ITK inhibitorsThe outcome of defective BTK signaling in humanshas been described previously in detail [26,27], and therefore...