Fig. 1From: A novel NAA10 p.(R83H) variant with impaired acetyltransferase activity identified in two boys with ID and microcephalyCardiac hypertrophy in patient 2. Transthoracic echocardiography showing the left ventricle in a parasternal long axi and b apical 3-chamber view. Please note how the hypertrophy predominantly affects the interventricular septum with relative sparring of the apical and posterior regions. Red marker on EKG trace shows temporal relation to heart cycle. LV, left ventricle; Ao, aorta; LA, left atrium; IVS, interventricular septum. c Standard electrocardiogram (EKG) in patient 2. Note the borderline prolonged QTcBack to article page