<u>Objectives.</u> Determine the association of distinct metabolic phenotypes with
coronary artery disease (CAD) and major adverse cardiovascular events (MACE).
<p><u>Background</u>. Obesity and metabolic
syndrome are associated with MACE. However, whether distinct metabolic
phenotypes differ in risk for CAD and MACE is unknown. </p>
<p><u>Methods.</u> We included patients from the <i>Prospective Multicenter Imaging Study for Evaluation of Chest Pain·(PROMISE)
</i>who underwent coronary computed tomography (CT) angiography. Obesity was
defined as a BMI≥30kg/m<sup>2</sup>, and metabolically healthy as ≤1 metabolic
syndrome component except diabetes, distinguishing four metabolic phenotypes:
metabolically healthy/unhealthy and non-obese/obese (MHN·<br>
MHO·MUN·MUO). Differences in severe calcification (CAC≥400), severe CAD (≥70%
stenosis), high-risk plaque (HRP), and MACE were assessed using adjusted logistic
and Cox-regression models.</p>
<p><u>Results.</u> Of 4,381 patients (48.4% male,
60.5±8.1y/o), 49.4% were metabolically healthy (30.7% MHN; 18.7% MHO) and 50.6%
unhealthy (22.3% MUN; 28.4% MUO). MHO had similar coronary-CT findings
as compared to MHN (severe CAC/CAD and HRP, p>0.36 for all). Among
metabolically unhealthy patients, those with obesity had similar CT findings as
compared to non-obese (p>0.10 for all). However, both MUN and MUO had
unfavorable CAD characteristics as compared to MHN (p≤0.017 for all).</p>
<p>130 events occurred during
follow-up (median 26 months). Compared to MHN, MUN (HR 1.61·[1.02–2.53]) but
not MHO (HR 1.06·[0.62–1.82) or MUO (HR 1.06·[0.66–1.72]) had higher risk for
MACE. </p>
<p><u>Conclusion.</u> In stable chest pain patients,
four metabolic phenotypes exhibit distinctly different CAD characteristics and
risk for MACE. Individuals who are metabolically unhealthy despite not being
obese were at highest risk in our cohort.<b></b></p>