A new method, based on gene editing with oligonucleotides and functional analyses, identifies which variants of DNA repair genes associated with Lynch syndrome are truly harmful and which are not. Scientists at The Netherlands Cancer Institute have developed this technique and classified these gene variants in both coding and noncoding regions, distinguishing those that are pathogenic from those that are benign.
Leigh syndrome is a fatal pediatric neurodegenerative disorder caused by mitochondrial dysfunction, most often due to defects in the mitochondrial respiratory chain. The Ndufs4 knockout (Ndufs4 KO) mouse is an established model of the disease, as loss of the NDUFS4 subunit leads to complex I (CI) deficiency and reproduces the neurological decline and pathology seen in affected children. Researchers from The Children’s Hospital of Philadelphia Research Institute and collaborators described how NV-354, a water-soluble prodrug of succinate, may mitigate this mitochondrial dysfunction.
Charcot-Marie-Tooth (CMT) disease is a group of clinically and genetically heterogeneous sensorimotor peripheral neuropathies. It is the most frequent inherited neuromuscular disorder affecting 9.7-82.3 patients per 100,000 individuals. Over 100 genes with all patterns of inheritance have been linked to CMT. These genes encode proteins involved in nerve-specific processes, such as axonal transport, myelination and synaptic transmission, and in general housekeeping pathways. However, the reason underlying why defects in such ubiquitous proteins predominantly affect peripheral nerves remains unclear.
