PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17102091-8 2006 MEN 2A is primarily associated with substitutions at five extracellular cysteine residues, while 95% of MEN 2B is associated with a single methionine to threonine mutation in the kinase domain (M918T). Threonine 153-162 ret proto-oncogene Homo sapiens 104-110