Probable transcription factor that acts downstream of egl-15, to promote migration of the HSN motor neurons from the tail to the gonad primordium during HSN cell differentiation (PubMed:10049362). During embryogenesis, expressed in HSN motor neurons (at protein level) (PubMed:10049362). Expressed in HSNs both before and during cell migration (at protein level) (PubMed:10049362).