NCIt definition : Human BTK wild-type allele is located within Xq21.33-q22 and is approximately 37 kb
in length. This allele, which encodes tyrosine-protein kinase BTK protein, plays a
role in the mediation of signal transduction during B-cell development. Mutation of
the gene is associated with X-linked agammaglobulinemia type 1.;
NCIt note : An intronic mutation of the BTK gene may be associated with X-linked hypogammaglobulinemia
and isolated growth hormone deficiency. (OMIM);