基本螺旋环螺旋转录因子，如ASCL4，对于决定细胞命运和许多组织的发育和分化是必不可少的（Jonsson等人，2004年[PubMed 15475265]）。[由OMIM提供，2008年3月]
Basic helix-loop-helix transcription factors, such as ASCL4, are essential for the determination of cell fate and the development and differentiation of numerous tissues (Jonsson et al., 2004 [PubMed 15475265]).[supplied by OMIM, Mar 2008]