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Development of an International Database for a Rare Genetic Disorder: The MECP2 Duplication Database (MDBase)The natural history of MECP2 duplication syndrome (MDS), a rare X-linked neurodevelopmental disorder with an estimated birth prevalence of 1/150,000 live births, is poorly understood due to a lack of clinical data collected for research. Such information is critical to the understanding of disease progression, therapeutic endpoints and outcome measures for clinical trials, as well as the development of therapies and orphan products.
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Negative impact of insomnia and daytime sleepiness on quality of life in individuals with the cyclin-dependent kinase-like 5 deficiency disorderCyclin-dependent kinase-like 5 (CDKL5) gene pathogenic variants result in CDKL5 deficiency disorder (CDD). Early onset intractable epilepsy and severe developmental delays are prominent symptoms of CDD. Comorbid sleep disturbances are a major concerning symptom for families.
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Daytime sleepiness and emotional and behavioral disturbances in Prader-Willi syndromeIndividuals with Prader-Willi syndrome (PWS) often have excessive daytime sleepiness and emotional/behavioral disturbances. The objective of this study was to examine whether daytime sleepiness was associated with these emotional/behavioral problems, independent of nighttime sleep-disordered breathing, or the duration of sleep.
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The Lived Experience of Parents’ Receiving the Diagnosis of CDKL5 Deficiency Disorder for Their ChildCDKL5 deficiency disorder (CDD), a severe developmental and epileptic encephalopathy, is being diagnosed earlier with improved access to genetic testing, but this may also have unanticipated impacts on parents’ experience receiving the diagnosis. This study explores the lived experience of parents receiving a diagnosis of CDD for their child using mixed methods.
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Associations Between Hyperphagia, Symptoms of Sleep Breathing Disorder, Behaviour Difficulties and Caregiver Well-Being in Prader-Willi Syndrome: A Preliminary StudyPrader-Willi syndrome (PWS) is a rare genetic disorder characterised by neurodevelopmental delays, hyperphagia, difficulties with social communication and challenging behaviours. Individuals require intensive supervision from caregivers which may negatively affect caregiver quality of life. This study used data collected in the Australasian PWS Registry to evaluate associations between child behaviours and caregiver mental well-being.
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Exploring genotype-phenotype relationships in the CDKL5 deficiency disorder using an international datasetCharacterized 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.
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Parent-observed thematic data on quality of life in children with autism spectrum disorderParent observations provide an initial framework for understanding quality of life in autism spectrum disorder
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Impacts of caring for a child with the CDKL5 disorder on parental wellbeing and family quality of lifeInvestigate impacts on maternal health and family quality of life in families with a child with the CDKL5 disorder
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Transition to adulthood for young people with intellectual disability: the experiences of their familiesA number of themes emerged from the qualitative data which included parents' views and concerns about the capacity of their young adult to adapt and change to life in adulthood
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Seizure variables and their relationship to genotype and functional abilities in the CDKL5 disorderEpilepsy is pervasive but not mandatory for the CDKL5 disorder, and genotype and functional abilities were related to seizure frequency