該基因屬于叉頭盒轉錄因子家族的P亞科。叉頭盒轉錄因子在發育和成年期間對組織和細胞類型特異性基因轉錄的調節中起著重要作用。叉頭盒P1蛋白包含DNA結合域和蛋白質結合域。該基因可能作為腫瘤抑制因子發揮作用，因為它在多種腫瘤類型中丟失，并映射到據報道含有腫瘤抑制基因的染色體區域（3P14.1）。選擇性剪接導致編碼不同亞型的多個轉錄變體。
This gene belongs to subfamily P of the forkhead box (FOX) transcription factor family. Forkhead box transcription factors play important roles in the regulation of tissue- and cell type-specific gene transcription during both development and adulthood. Forkhead box P1 protein contains both DNA-binding- and protein-protein binding-domains. This gene may act as a tumor suppressor as it is lost in several tumor types and maps to a chromosomal region (3p14.1) reported to contain a tumor suppressor gene(s). Alternative splicing results in multiple transcript variants encoding different isoforms.