Table 1

 Clinical data of HOS patients with an identified mutation in the TBX5 gene

ID numberAge (years)SexClinical descriptionMutation in TBX5
Heart anomaliesLimb anomalies
Familial cases
IPM 131FConductive heart failureLeft and right thumb anomalyIVS3-2 A>G
IPM 2-114FVentricular septal defectLeft aplastic thumb, right triphalangeal thumb280delC>FS ter
IPM 2-216FAtrial septal defect II, several ventricular septal defectsLeft and right hypoplastic claviculae, radii triphalangeal thumbs, hypoplastic left ulna280delC>FS ter
IPM 2-342FVentricular septal defectLeft and right triphalangeal thumbs280delC>FS ter
IPM 3-121FAtrial septal defect II, open foramen ovaleLeft and right hypoplastic thumbsY136X
IPM 3-244FAtrial septal defectHypoplastic thumbs, movement restriction of elbow and shoulder jointsY136X
IPM 3-347MAtrial septal defectLeft and right hypoplastic thumbsY136X
IPM 4-142MAtrial septal defectLeft and right hypoplastic humeriY136X
IPM 4-258MAtrial septal defectLeft hypoplastic M. deltoideus, radius and thumb, right triphalangeal thumbY136X
IPM 4-361MAtrial septal defectLeft and right aplastic thumbsY136X
Sporadic cases
IPM 523FAtrial septal defect IILeft and right thumb anomalies467insA>FS ter
IPM 630FAneurysm of the atrial septum bradycardiaLeft aplastic radius and ulna, hypoplastic humerus, aplastic thumb and index finger, right hypoplastic radius, aplastic index finger, triphalangeal thumb484ins46bp>FS ter
IPM 73FSmall atrial septal defect, ventricular septal defectLeft and right thumb anomaliesIVS7-3 C>G
IPM 831FCommon atrium, complete atrioventricular canalLeft phocomelia, hypoplastic radius, right hypoplastic thumbR279X
IPM 914FAtrial septal defect, ventricular septal defect, pulmonary vein anomalyLeft and right triphalangeal thumb, movement restriction of shoulder jointsQ362X