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DIAGNOSTIC METHODS INVOLVING DETERMINING GENE COPY NUMBERS AND SNPs IN THE FcyRll/FcyRlll GENE CLUSTER, AND PROBES FOR USE IN SUCH METHODS TO DETECT SUSCEPTIBILITY TO AND TREATMENT EFFICACY IN AUTOIMMUNE DISEASES
DIAGNOSTIC METHODS INVOLVING DETERMINING GENE COPY NUMBERS AND SNPs IN THE FcyRll/FcyRlll GENE CLUSTER, AND PROBES FOR USE IN SUCH METHODS TO DETECT SUSCEPTIBILITY TO AND TREATMENT EFFICACY IN AUTOIMMUNE DISEASES
The invention relates to diagnostic methods to predict whether a subject is predisposed for acquiring a disease or to predict the therapy responsiveness of an individual patient. Provided is a method for determining whether a subject is predisposed for developing an autoimmune disease, comprising determining in a sample isolated from said subject the amount of intact genes, or gene products thereof, of the FcγRII/FcγRIII gene cluster, said gene cluster comprising the FCGR2C, FCGR3A, FCGR2A and FCGR3B genes encoding an activating FcγR, and FCGR2B encoding an inhibitory FcγR; and correlating said amount to the amount observed in a healthy population. Also provided is a method to predict the responsiveness of a subject to therapy with intravenous immunoglobulin (IVIg) therapy or a monospecific biological, such as a humanized or human monoclonal antibody or a chimeric molecule, comprising the C-terminal Fc-tail of IgG.
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