Author(s): Prasher V
No study to date has investigated clinical differences between adults with translocated Down syndrome and those with trisomy 21. Nine translocated Down syndrome individuals were matched to 9 trisomy 21 controls and assessed for medical differences. Significant findings included the translocated group having less severe learning disability according to ICD 10 criteria, less obesity and increased frequency of psychiatric disorders (in particular dementia and depression). However, on the Adaptive Behaviour Scale, the translocated group have significantly poorer independent functioning skills and more maladaptive behaviour, possibly as a consequence of the higher incidence of dementia and depression. Further studies investigating differences between the differing cytogenetic forms of Down syndrome is recommended.