PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
9796641-1	1998	A nested case-control study was conducted to determine whether a genetic polymorphism in the CYP17 gene, which encodes for an enzyme that mediates steroid hormone metabolism, was associated with an increased risk of breast cancer.	Steroids	147-162	cytochrome P450 family 17 subfamily A member 1	Homo sapiens	93-98