PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26151081-7 2015 RESULTS: Multivariate modeling for the 6MWD in 80 patients with GOLD grade U-II COPD showed that ADC (beta = 0.34, P = .04), diffusing capacity of the lung for carbon monoxide (beta = 0.60, P = .0008), and residual volume/total lung capacity (beta = -0.26, P = .02) were significant variables, while forced expiratory volume in 1 second (FEV1) and airway disease measurements were not. Carbon Monoxide 160-175 urotensin 2 Homo sapiens 75-79