The gene (LGALS3BP) encoding the serum protein 90K, associated with cancer and infection by the human immunodeficiency virus, maps at 17q25.

Levels of a 90-kDa tumor associated protein, designated 90K (gene symbol LGALS3BP), have been found elevated in the serum of patients with cancer and in those infected by the human immunodeficiency virus (HIV). 90K appears to be implicated in immune response associated with natural killer (NK) and lymphokine-activated killer (LAK) cell cytotoxicity. Using fluorescence in situ hybridization the full length 90K cDNA has been localized to chromosome 17q25.