An isolated growth hormone deficiency characterized by dwarfism, variable occurence of hypogammaglobulinemia, and a generally good response to growth hormone therapy that has_material_basis_in mutation in the BTK gene on chromosome Xq22.1. (DO)
Note: Use of the qualifier "multiple interactions" designates that the annotated interaction
is comprised of a complex set of reactions and/or regulatory events, possibly involving
additional chemicals and/or gene products.