INSM1

Insulinoma-associated protein 1 is a protein that in humans is encoded by the "INSM1" gene.
Function.
Insulinoma-associated 1 (INSM1) gene is intronless and encodes a protein containing both a zinc finger DNA-binding domain and a putative prohormone domain. This gene is a sensitive marker for neuroendocrine differentiation of human lung tumors. 
Interactions.
INSM1 has been shown to interact with SORBS1.