Delayed rectifier. The discovery of de novo mutations in ion channel genes as a cause for genetic epilepsies continues. In a recent publication in Nature Genetics, we have identified de novo mutations in KCNA2 as a novel cause of epileptic encephalopathies associated with ataxia. Interestingly, even within a single gene, two different phenotypes seem to be emerging. Continue reading
Tag Archives: hereditary spastic paraplegia
AP4S1 in fever-associated epilepsies and spastic paraplegia
Peds vs. adult. Sometimes it makes a fundamental difference in diagnosis whether a patient is seen in a pediatric setting or by an adult specialist later in life. Here is the most recent example from our consortium, which was just published in Human Molecular Genetics: what initially looked like recessive inheritance with intellectual disability and a peculiar fever-associated epilepsy syndrome eventually turned out to be the second reported family of the novel spastic paraplegia gene AP4S1. This raises the question of how much we are missing if we are looking at the wrong point in time. Let’s have a look at how genetics can help us see an overlap of diseases where we usually don’t have a chance to. Continue reading
Papers of the week – next-level mutation classifiers and 3’UTR variants in Dravet Syndrome
The future is now. This week’s publications of the week are about the next generation of in silico mutation interpretation, the power of a full genetic screen in neurodegenerative motor neuron diseases and a possible 3’UTR mutation in Dravet Syndrome. Continue reading