In a study of 200 HIV+ patients and seronegative controls, after adjusting for demographics and CVD risk factors, low levels of circulating endothelial progenitor cells (circulating CD34+/KDR+ or CD34+/VE-cadherin+ cells) were associated with ART use and increased cIMT, a measure of sub-clinical atherosclerosis [61]. The gene discussed is CD34; the disease is atherosclerosis.