OCTOBER 2024

Applying cellular fixation and cell-type isolation for single-cell sequencing

Amplexa has supported Prof. Ditte C. Andersens-group in applying and validating a novel technique for cell isolation for single-cell sequencing that allows the samples to be stored at -80 degrees for a prolonged period before further single-cell library preparation.

SEPTEMBER 2024

Epilepsy as a Novel Phenotype of BPTF-Related Disorders

Background: Neurodevelopmental disorder with dysmorphic facies and distal limb anomalies (NEDDFL) is associated to BPTF gene haploinsufficiency. Epilepsy was not included in the initial descriptions of NEDDFL, but emerging evidence indicates that epileptic seizures occur in some affected individuals. This study aims to investigate the electroclinical epilepsy features in individuals with NEDDFL.

SEPTEMBER 2023

D-galactose Supplementation for the Treatment of Mild Malformation of Cortical Development with Oligodendroglial Hyperplasia in Epilepsy (MOGHE): A Pilot Trial of Precision Medicine After Epilepsy Surgery

MOGHE is defined as mild malformation of cortical development with oligodendroglial hyperplasia in epilepsy. Approximately half of the patients with histopathologically confirmed MOGHE carry a brain somatic variant in the SLC35A2 gene encoding a UDP-galactose transporter.

SEPTEMBER 2023

A new neurodevelopmental disorder linked to heterozygous variants in UNC79

Purpose: The "NALCN channelosome" is an ion channel complex that consists of multiple proteins, including NALCN, UNC79, UNC80, and FAM155A. Only a small number of individuals with a neurodevelopmental syndrome have been reported with disease causing variants in NALCN and UNC80. However, no pathogenic UNC79 variants have been reported, and in vivo function of UNC79 in humans is largely unknown.

Incorporating epilepsy genetics into clinical practice: a 360° evaluation

We evaluated a new epilepsy genetic diagnostic and counseling service covering a UK population of 3.5 million. We calculated diagnostic yield, estimated clinical impact, and surveyed referring clinicians and families. We costed alternative investigational pathways for neonatal onset epilepsy. Patients with epilepsy of unknown aetiology onset < 2 years; treatment resistant epilepsy; or familial epilepsy were referred for counseling and testing.

Importance of size of gene panels in diagnostics of children with epilepsy

Amplexa Genetics has in collaboration with three German laboratories; The Center for Human Genetics and Laboratory Diagnostics, CEGAT and Medical Genetics Center, has approved and published the article "Next Generation Sequencing in Pediatric Epilepsy Using Customized Panels: Size Matters".

Impact on clinical decision-making of next-generation sequencing in pediatric epilepsy in a tertiary epilepsy referral center

Next-generation sequencing (NGS) describes new powerful techniques of nucleic acid analysis, which allow not only disease gene identification diagnostics but also applications for transcriptome/methylation analysis and meta-genomics. NGS helps identify many monogenic epilepsy syndromes.

Utility of Genetic Testing for therapeutic decision-making in adults with epilepsy

Objective: Genetic testing has become a routine part of the diagnostic workup in children with early onset epilepsies. In the present study, we sought to investigate a cohort of adult patients with epilepsy, to determinate the diagnostic yield and explore the gain of personalized treatment approaches in adult patients.

Phylogeny of teleost connexins reveals highly inconsistent intra- and interspecies use of nomenclature and misassemblies in recent teleost chromosome assemblies

Background: Based on an initial collecting of database sequences from the gap junction protein gene family (also called connexin genes) in a few teleosts, the naming of these sequences appeared variable.

Parental mosaicism in epilepsies due to alleged de novo variants

Severe early onset epilepsies are often caused by de novo pathogenic variants. Few studies have reported the frequency of somatic mosaicism in parents of children with severe epileptic encephalopathies.

Identification of male heterogametic sex-determining regions on the Atlantic herring Clupea harengus genome

The sex determination system of Atlantic herring Clupea harengus L., a commercially important fish, was investigated. Low-coverage whole-genome sequencing of 48 females and 55 males and a genome-wide association study revealed two regions on chromosomes 8 and 21 associated with sex.

Analysis of shared heritability in common disorders of the brain

Disorders of the brain can exhibit considerable epidemiological comorbidity and often share symptoms, provoking debate about their etiologic overlap. We quantified the genetic sharing of 25 brain disorders from genome-wide association studies of 265,218 patients and 784,643 control participants and assessed their relationship to 17 phenotypes from 1,191,588 individuals.