PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10446865-1 1999 OBJECTIVE: To determine the frequencies at which either a valine or leucine occurs at position 247 in the beta2-glycoprotein I (beta2GPI) gene of normal individuals of the Caucasian, African American, and Asian ethnic groups and to compare these data with those in patients with the antiphospholipid syndrome (APS), with and without anti-beta2GPI antibodies. Valine 58-64 apolipoprotein H Homo sapiens 128-136