該基因編碼由血小板衍生生長因子（PDGF）和血管內皮生長因子（VEGF）組成的蛋白家族成員。編碼的前蛋白經蛋白質水解處理產生血小板衍生生長因子B亞單位，該亞單位可與相關的血小板衍生生長因子A亞單位同二聚或異二聚。這些蛋白結合并激活pdgf受體酪氨酸激酶，在廣泛的發育過程中發揮作用。該基因的突變與腦膜瘤有關。染色體22和17之間的相互易位，在這個基因和膠原1型α1的位置，與一種罕見的皮膚腫瘤——皮膚纖維肉瘤突起有關。選擇性剪接導致多個轉錄變體。
This gene encodes a member of the protein family comprised of both platelet-derived growth factors (PDGF) and vascular endothelial growth factors (VEGF). The encoded preproprotein is proteolytically processed to generate platelet-derived growth factor subunit B, which can homodimerize, or alternatively, heterodimerize with the related platelet-derived growth factor subunit A. These proteins bind and activate PDGF receptor tyrosine kinases, which play a role in a wide range of developmental processes. Mutations in this gene are associated with meningioma. Reciprocal translocations between chromosomes 22 and 17, at sites where this gene and that for collagen type 1, alpha 1 are located, are associated with dermatofibrosarcoma protuberans, a rare skin tumor. Alternative splicing results in multiple transcript variants.