ICD-11 definition : Holt-Oram syndrome is characterized by mild-to-severe congenital cardiac defects (ostium
secundum atrial septal defect (ASD), ventricular septal defect (VSD) and ostium primum
ASD) and skeletal abnormalities of the upper limbs (radial ray abnormalities, absent
or abnormal radius, upper limb-transverse elements missing and various thumb anomalies).;
Holt-Oram syndrome is characterized by mild-to-severe congenital cardiac defects (ostium
secundum atrial septal defect (ASD), ventricular septal defect (VSD) and ostium primum
ASD) and skeletal abnormalities of the upper limbs (radial ray abnormalities, absent
or abnormal radius, upper limb-transverse elements missing and various thumb anomalies).