(A) Shown is the distribution of left ventricular ejection fraction and prevalence of subnormal ejection fraction among 54 TTNtv carriers and 12,499 noncarriers. In a logistic regression model adjusted for the cubic spline of age, sex, and genetic ancestry, TTNtv carriers had 12.7-fold (95%CI 6.2 – 25.8; p< 0.001) increased risk of a subnormal ejection fraction. (B) Shown are the incidence rates per 1,000 person-years for the composite endpoint and each of its components. Hazard ratios (HR) and 95% confidence intervals (CI) were calculated using a Cox regression model adjusted for the cubic spline of age, sex, and genetic ancestry.