B-Cell Immunodeficiency-Limb Anomaly-Urogenital Malformation Syndrome, also known as hoffman syndrome, is related to b-cell immunodeficiency, distal limb anomalies, and urogenital malformations and myopathy. An important gene associated with B-Cell Immunodeficiency-Limb Anomaly-Urogenital Malformation Syndrome is TOP2B (DNA Topoisomerase II Beta). Affiliated tissues include b cells and bone.