C1QTNF9 and metabolic syndrome: <h4>Objective</h4>This study aimed to evaluate and compare the serum levels of CTRP9, CTRP15, HOMA-IR, and HOMA-B in metabolic syndrome patients, with and without coexisting coronary artery disease.<h4>Methodology</h4>This was a cross-sectional comparative study involving two groups, each with 40 patients.