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Linking MECP2 and pain sensitivity: the example of Rett syndrome

This study investigated the nature and prevalence of atypical pain responses in Rett syndrome and their relationships with specific MECP2 mutations.

Stereotypical hand movements in 144 subjects with Rett syndrome from the population-based Australian database

Stereotypic hand movements are a feature of Rett Syndrome but few studies have observed their nature systematically.

Multi-site validation of a suite of clinical outcome measures for clinical trial readiness in the CDKL5 Deficiency Disorder

Helen Jenny Peter Leonard Downs Jacoby MBChB MPH BApplSci (physio) MSc PhD BA (Hons) MSc Principal Research Fellow Head, Child Disability

The natural history of the MECP2 Duplication disorder: Australian surveillance and plans for development of an international register

Helen Jenny Leonard Downs MBChB MPH BApplSci (physio) MSc PhD Principal Research Fellow Head, Child Disability +61 419 956 946 08 6319 1763

Measuring the Burden of Epilepsy Hospitalizations in CDKL5 Deficiency Disorder

Information on the hospital service use among individuals with CDKL5 Deficiency Disorder, an ultrarare developmental epileptic encephalopathy, is limited, evidence of which could assist with service planning. Therefore, using baseline and longitudinal data on 379 genetically verified individuals in the International CDKL5 Disorder Database, we aimed to investigate rates of seizure-related and other hospitalizations and associated length of stay in this cohort.

Growth patterns in individuals with CDKL5 deficiency disorder

Aim: To compare growth in individuals with cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder with population norms and to investigate the effect of gastrostomy on growth. 

Psychometric properties of QI-Disability in CDKL5 Deficiency Disorder: Establishing readiness for clinical trials

CDKL5 Deficiency Disorder (CDD) is a rare genetic disorder with symptoms of epilepsy, developmental impairments, and other comorbidities. Currently, there are no outcome measures for CDD with comprehensive evidence of validation. This study aimed to evaluate the psychometric properties of the Quality of Life Inventory-Disability (QI-Disability) in CDD. Quality of Life Inventory-Disability was administered to 152 parent caregivers registered with the International CDKL5 Disorder Database (ICDD).

Charting developmental trajectories from 12 to 36 months and associated early risk and protective factors

To investigate developmental trajectories in early childhood and predictors of class assignment.

Exploring quality of life in individuals with a severe developmental and epileptic encephalopathy, CDKL5 Deficiency Disorder

CDKL5 Deficiency Disorder (CDD) is a rare genetic disorder caused by a mutation in the cyclin-dependent kinase-like 5 (CDKL5) gene. It is now considered to be a developmental and epileptic encephalopathy because of the early onset of seizures in association with severe global delay. Other features include cortical visual impairment, sleep and gastro-intestinal problems. Progress in clinical understanding, especially regarding the spectrum of functional ability, seizure patterns, and other comorbidities was initially slow but accelerated in 2012 with the establishment of the International CDKL5 Database (ICDD). Our aim was to use this data source to investigate quality of life (QOL) and associated factors in this disorder.

Risk of Developmental Disorders in Children of Immigrant Mothers: A Population-Based Data Linkage Evaluation

Increased risk of autism spectrum disorder with intellectual disability and cerebral palsy with intellectual disability for mothers of some foreign-born groups