INSM1 Antibody / Insulinoma associated protein 1

Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT

Insulinoma-associated protein 1 (INSM1) is a developmentally regulated zinc-finger transcription factor. It localizes to the nucleus and is expressed in embryonic issues undergoing neuroendocrine differentiation. INSM1 is not expressed in normal adult tissues but can be found highly expressed in neuroendocrine tumors. INSM1 is positive in 95% of lung small cell carcinoma and 91% of lung large cell neuroendocrine carcinoma, compared with 75% and 78% with the combined panel of traditional neuroendocrine markers (synaptophysin, chromogranin, and CD56).INSM1 stains 100% of the atypical carcinoids, typical carcinoids and paragangliomas, but only 3% of adenocarcinomas and 4% of squamous cell carcinomas. Therefore, INSM1 is sensitive and specific to be a single first-line pan-neuroendocrine marker.

Purified

1 mg/ml in 1X PBS; BSA free, sodium azide free

A recombinant partial protein sequence (within amino acids 1-300) from the human protein was used as the immunogen for the IA1 antibody.

This IA1 antibody is available for research use only.

Nucleus

Protein A/G affinity

Q01101