May act as a transcriptional regulator (By similarity). Plays a role in noradrenergic neuron, pancreatic and gastrointestinal endocrine cells differentiation during embryonic development. Expressed both maternally and zygotically. Expressed during neurogenesis in neural plate primary neurons and in the anteroventral noradrenergic neurons. Expressed in the dorsal endoderm, throughout the gastrointestinal tract and in the ventral and dorsal pancreas from tail bud through tadpole stages. Belongs to the INSM1 family.