Another member of the cluster, MiR24, targets chitinase 3-like 1 (Chi3l1) to regulate cytokine synthesis and macrophage survival, and it also promotes aortic smooth muscle cell migration and cytokine production, leading to abdominal aortic aneurysms103, highlighting a novel plasma biomarker for monitoring the progression of this specific type of aneurysm. The gene discussed is CHI3L1; the disease is aneurysm.