PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9539934-4 1998 RESULTS: A heterozygote T-->C (Cys-->Arg) mutation at codon 618 in exon 10 of the RET proto-oncogene was identified in 4 family members who had previously been diagnosed with medullary thyroid cancer. Cysteine 34-37 ret proto-oncogene Homo sapiens 88-91