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Down Syndrome

Down syndrome, also known as Trisomy 21, is one of the most common chromosome abnormalities in humans. It occurs when a child's cells end up with 47 chromosomes instead of the usual 46. Down syndrome causes intellectual disability and other physical and learning challenges.

Associations between genotype, phenotype and behaviours measured by the Rett syndrome behaviour questionnaire in Rett syndrome

Rett syndrome (RTT) is a rare neurodevelopmental disorder with developmental impairments, comorbidities, and abnormal behaviours such as hand stereotypies and emotional features. The Rett Syndrome Behaviour Questionnaire (RSBQ) was developed to describe the behavioural and emotional features of RTT.

"What about us?"- the drawbacks of current bruxism assessment criteria in evaluating vulnerable groups

Jenny Helen Kingsley Downs Leonard Wong BApplSci (physio) MSc PhD MBChB MPH MBBS, MPH, MMedStat Head, Child Disability Principal Research Fellow

Aspects of speech-language abilities are influenced by MECP2 mutation type in girls with Rett syndrome

This study explored relationships between speech and language abilities in girls with Rett syndrome and how they may be affected by the type of genetic mutation

Parental perspectives on the communication abilities of their daughters with Rett syndrome

We interviewed 17 parents with a daughter with Rett syndrome to gain their perspectives on how their daughter communicates and barriers.

Parental origin of mutations

We hypothesised that MECP2 mutations occur predominantly on the male derived X chromosome.

Atypical Presentations

We investigated the factors that may affect the age at diagnosis for girls and woman with Rett syndrome.

Clinical severity and X-chromosome inactivation

For this study, we examined how Rett syndrome characteristics can be affected by X-inactivation for 2 of the common types of mutation - p.R168X and p.T158M.

Large deletions of the MECP2 gene

We used multiplex ligation-dependent probe amplification to examine the MECP2 gene sequences in 149 girls and 1 boy.