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Development and initial validation of the Communication Inventory Disability – Observer Reported (CID-OR): a measure of communication in CDKL5 deficiency disorder

CDKL5 Deficiency Disorder (CDD) is a rare neurodevelopmental disorder characterised by early onset seizures combined with complex healthcare needs and developmental impairment that influence functional domains including communication. Communication is a high priority domain for families but currently used measures demonstrate floor effects. 

Validating the Communication and Symbolic Behavior Scales–Developmental Profile Infant–Toddler Checklist (CSBS–DP ITC) Beyond Infancy in the CDKL5 Deficiency Disorder

CDKL5 deficiency disorder (CDD) results in early-onset epilepsy and lifelong cognitive and motor impairments. With no validated measure for communication in CDD, this study evaluated the psychometric properties of the Communication and Symbolic Behavior Scales-Developmental Profile Infant Toddler Checklist.

Vitamin D deficiency at 16 to 20 weeks' gestation is associated with impaired lung function and asthma at 6 years of age

This paper examines whether a Vitamin D deficiency during pregnancy affects the child's lung function predisposition towards lung disease such as asthma.

Exploring genotype-phenotype relationships in the CDKL5 deficiency disorder using an international dataset

Characterized by early-onset seizures, global developmental delay and severe motor deficits, CDKL5 deficiency disorder is caused by pathogenic variants in the cyclin-dependent kinase-like 5 gene. Previous efforts to investigate genotype-phenotype relationships have been limited due to small numbers of recurrent mutations and small cohort sizes. Using data from the International CDKL5 Disorder Database we examined genotype-phenotype relationships for 13 recurrent CDKL5 variants and the previously analyzed historic variant groupings. We have applied the CDKL5 Developmental Score (CDS) and an adapted version of the CDKL5 Clinical Severity Assessment (CCSA), to grade the severity of phenotype and developmental outcomes for 285 individuals with CDKL5 variants.

The incidence, prevalence and clinical features of MECP2 duplication syndrome in Australian children

MECP2 duplication syndrome is a rare but important diagnosis in children because of the burden of respiratory illness and recurrence risk

Severity Assessment in CDKL5 Deficiency Disorder

A severity assessment was rapidly developed with input from multiple stakeholders. Refinement through ongoing validation is required for future clinical trials.

Patterns of sedentary time and ambulatory physical activity in a Danish population of girls and women with Rett syndrome

High levels of sedentary time and low daily step counts in a Danish population of females with Rett syndrome

Respiratory morbidity in Rett syndrome: An observational study

Rett syndrome is associated with increased vulnerability to lower respiratory tract infection requiring hospitalization

Sleep disturbances in Rett syndrome: Impact and management including use of sleep hygiene practices

Attention to sleep hygiene remains an important management strategy for sleep problems in Rett syndrome

Choice making in Rett syndrome: a descriptive study using video data

We describe the choice-making abilities of girls and women with Rett syndrome.