TY - JOUR
T1 - Do apolipoproteins improve coronary risk prediction in subjects with metabolic syndrome? Insights from the North Italian Brianza cohort study
AU - Gianfagna, Francesco
AU - Veronesi, Giovanni
AU - Guasti, Luigina
AU - Chambless, Lloyd E.
AU - Brambilla, Paolo
AU - Corrao, Giovanni
AU - Mancia, Giuseppe
AU - Cesana, Giancarlo
AU - Ferrario, Marco M.
PY - 2014
Y1 - 2014
N2 - Objective: We assessed predictive abilities and clinical utility of CVD risk algorithms including ApoB and ApoAI among non-diabetic subjects with metabolic syndrome (MetS). Methods: Three independent population-based cohorts (3677 35-74 years old) were enrolled in Northern Italy, adopting standardized MONICA procedures. Through Cox models, we assessed the associations between lipid measures and first coronary events, as well as the changes in discrimination and reclassification (NRI) when standard lipids or apolipoproteins were added to the CVD risk algorithm including non-lipids risk factors. Finally, the best models including lipids or apolipoproteins were compared. Results: During the 14.5 years median follow-up time, 164 coronary events were validated. All measures showed statistically significant associations with the endpoint, while in the MetS subgroup HDL-C and ApoAI (men, HR=1.59; 95%CI: 0.96-2.65) were not associated. Models including HDL-C plus TC and ApoB plus ApoAI for lipids and apolipoproteins, respectively, showed the best predictive values. When ApoB plus ApoAI replaced TC plus HDL-C, NRI values improved in subjects with MetS (13.8; CI95%:-5.1,53.1), significantly in those previously classified at intermediate risk (44.5; CI95% 13.8,129.6). In this subgroup, 5.5% of subjects was moved in the high (40.0% of expected events) and 17.0% in the low risk class (none had an event at 10 years). Conclusions: ApoB and ApoAI could improve coronary risk prediction when used as second level biomarkers in non-diabetic subjects with MetS classified at intermediate risk. The absence of cases moved downward suggests the gain in avoiding treatments in non-cases and favor the use of apolipoproteins for risk assessment. •High ApoAI levels are associated with first coronary event in non-diabetic MetS men.•ApoAI and ApoB improve prediction in MetS subjects at intermediate risk.•46 tests are needed to correctly reclassify 1 case in the high-risk class.•1 every 6 MetS subject was reclassified in the low-risk class, none had an event.•Rationale for apo use in MetS as second level marker to avoid unnecessary treatment.
AB - Objective: We assessed predictive abilities and clinical utility of CVD risk algorithms including ApoB and ApoAI among non-diabetic subjects with metabolic syndrome (MetS). Methods: Three independent population-based cohorts (3677 35-74 years old) were enrolled in Northern Italy, adopting standardized MONICA procedures. Through Cox models, we assessed the associations between lipid measures and first coronary events, as well as the changes in discrimination and reclassification (NRI) when standard lipids or apolipoproteins were added to the CVD risk algorithm including non-lipids risk factors. Finally, the best models including lipids or apolipoproteins were compared. Results: During the 14.5 years median follow-up time, 164 coronary events were validated. All measures showed statistically significant associations with the endpoint, while in the MetS subgroup HDL-C and ApoAI (men, HR=1.59; 95%CI: 0.96-2.65) were not associated. Models including HDL-C plus TC and ApoB plus ApoAI for lipids and apolipoproteins, respectively, showed the best predictive values. When ApoB plus ApoAI replaced TC plus HDL-C, NRI values improved in subjects with MetS (13.8; CI95%:-5.1,53.1), significantly in those previously classified at intermediate risk (44.5; CI95% 13.8,129.6). In this subgroup, 5.5% of subjects was moved in the high (40.0% of expected events) and 17.0% in the low risk class (none had an event at 10 years). Conclusions: ApoB and ApoAI could improve coronary risk prediction when used as second level biomarkers in non-diabetic subjects with MetS classified at intermediate risk. The absence of cases moved downward suggests the gain in avoiding treatments in non-cases and favor the use of apolipoproteins for risk assessment. •High ApoAI levels are associated with first coronary event in non-diabetic MetS men.•ApoAI and ApoB improve prediction in MetS subjects at intermediate risk.•46 tests are needed to correctly reclassify 1 case in the high-risk class.•1 every 6 MetS subject was reclassified in the low-risk class, none had an event.•Rationale for apo use in MetS as second level marker to avoid unnecessary treatment.
KW - Apolipoprotein A-I
KW - Apolipoprotein B-100
KW - Dysfunctional HDL
KW - Mathematical modeling
KW - Metabolic syndrome
KW - Primary prevention
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U2 - 10.1016/j.atherosclerosis.2014.06.029
DO - 10.1016/j.atherosclerosis.2014.06.029
M3 - Article
C2 - 25062081
AN - SCOPUS:84905861758
VL - 236
JO - Atherosclerosis
JF - Atherosclerosis
SN - 0021-9150
IS - 1
ER -