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Functional skills in MECP2 duplication syndrome: developmental dynamics and regression

MECP2 duplication syndrome (MDS) is an ultrarare, X-linked neurodevelopmental disorder that is poorly understood in terms of its natural history and phenotypic variability. There is limited information on how individuals with MDS acquire, retain or lose fundamental functional skills (gross motor, purposeful hand function and communication) - that of which this study aimed to better characterise in the largest case series to date.

Exploring sleep challenges in CDKL5 Deficiency Disorder

Sleep disturbance is a common and significant issue for individuals with CDKL5 Deficiency Disorder (CDD) and their families. The study aimed to investigate experiences of sleep disturbance in CDD and associated factors.

Psychometric validation of the quality of life Inventory − Disability (QI-Disability) among patients with Lennox-Gastaut syndrome and Dravet syndrome

To evaluate the psychometric properties of the Quality of Life Inventory -Disability (QI-Disability) for individuals with Dravet syndrome (DS) or Lennox-Gastaut syndrome (LGS), two rare developmental and epileptic encephalopathy conditions.

Six cases of ENPP1 pathogenic variants causing autosomal recessive hypophosphatemic rickets type 2 and generalized arterial calcification of infancy

Autosomal recessive hypophosphatemic rickets type 2 (ARHR2) and generalized arterial calcification of infancy (GACI) occur secondary to biallelic ectonucleotide pyrophosphate/phosphodiesterase 1 (ENPP1) loss-of-function pathogenic variants. GACI is a life-threatening condition, often presenting in the neonatal period with heart failure and hypertension, caused by calcification of the media in large- and medium-sized arteries.

What Parents, Teachers and Clinicians Know About the Features of Developmental Dyslexia and Its Intervention: A Scoping Review

Despite decades of research, misconceptions about developmental dyslexia remain widespread among those responsible for identifying and supporting affected children. Identifying the nature and persistence of these beliefs is essential to improving practice and policy. We conducted a scoping review to map the understanding of developmental dyslexia among teachers, parents and clinicians by identifying their beliefs about its features and interventions.

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. 

Parent/caregiver perspectives of meaningful improvement in functional domains for people with CDKL5 deficiency disorder: a mixed-methods study

CDKL5 deficiency disorder (CDD) is a rare developmental and epileptic encephalopathy. Greater understanding of the smallest meaningful improvements for individuals with CDD in clinical trials and practice is needed for a person-centred approach to treatment efficacy. This study explored how parent/caregivers of people with CDD understood meaningful improvements and described change for priority functional domains including communication, gross motor, fine motor, feeding.

Confident and Trustworthy Model for Fidgety Movement Classification

General movements (GMs) are part of the spontaneous movement repertoire and are present from early fetal life onwards up to age five months. GMs are connected to infants' neurological development and can be qualitatively assessed via the General Movement Assessment. In particular, between the age of three to five months, typically developing infants produce fidgety movements and their absence provides strong evidence for the presence of cerebral palsy.

Beyond Seizures as an Outcome Measure: A Global Severity Scoring System for CDKL5 Deficiency Disorder

CDKL5 deficiency disorder (CDD) is a rare developmental and epileptic encephalopathy (DEE) associated with multiple impairments and comorbidities. Outcome measures for disease-modifying clinical trials for DEEs should measurably capture a spectrum of caregiver priorities and be externally validated.

Perspectives on the origin and therapeutic opportunities in Down syndrome-associated leukemia

It is now well accepted that germline or de novo genetic alterations predispose to cancer development, especially during childhood. Among them, constitutive trisomy 21, also known as Down syndrome (DS), has been shown to predispose to acute leukemia affecting both the myeloid (ML-DS) and lymphoid (DS-ALL) lineages. ML-DS is associated with a good prognosis compared to children without DS, due in part to a higher sensitivity to conventional chemotherapy.