In non-ischemic HFrEF, patients with CHIP mutations, such as native T1, ECV, and T2, have higher mapping values on cardiac MRI performed during diagnosis than those without CHIP mutations.CHIP, clonal hematopoiesis of indeterminate potential; ECV, extracellular volume; HFrEF, heart failure with reduced ejection fraction. The gene discussed is STUB1; the disease is heart failure.