Predicted to be involved in positive regulation of B cell proliferation; positive regulation of adaptive immune response; and positive regulation of immunoglobulin production. Predicted to act upstream of or within several processes, including positive regulation of T cell activation; positive regulation of cytokine production; and positive regulation of organ growth. Predicted to be active in cytoplasm and nucleus. Orthologous to human SASH3 (SAM and SH3 domain containing 3). [provided by Alliance of Genome Resources, Apr 2022]