Proqr Therapeutics NV has highlighted the continued progression and expansion of its early-stage pipeline of RNA editing therapies, including programs in cholestatic diseases, Hurler syndrome, metabolic dysfunction-associated steatohepatitis and Rett syndrome.

A therapeutic strategy based on alternative splicing of the MECP2 gene could restore protein levels in Rett syndrome, a neurological disorder caused by mutations in that gene. Scientists at Baylor College of Medicine have successfully tested this approach both in vitro in neurons from Rett patients that produce some functional protein, correcting the altered gene expression and improving neuronal functions, and in vivo in mice.

The full rights to Taysha Gene Therapies Inc.’s lead gene therapy candidate are coming back to the company. In 2022, Astellas Pharma Inc. invested $50 million in Taysha for 15% of the company and the exclusive option to license TSHA-102 for treating the rare disease Rett syndrome. That option has expired, according to Taysha.

Neurogene Inc.’s disclosure June 30 of its registrational trial design in Rett syndrome (RS) added spice to the space, where Taysha Gene Therapies Inc. is another closely watched player. The New York-based firm said Embolden will test NGN-401, a gene therapy for the treatment of females age 3 and older with RS. U.S. regulators have signed off regarding key aspects of Embolden’s structure.

Unravel Biosciences Inc. has submitted clinical study applications in Colombia seeking to begin proof-of-concept clinical trials for RVL-001 for Rett syndrome and Pitt-Hopkins syndrome.

Infection or cure? Scientists from Tel Aviv University and the University of Glasgow genetically modified the Toxoplasma gondii to bring a protein inside neurons. The novelty of using a protozoan that can travel from the gut to parasitize the CNS contrasts with the possibility of causing a disease. The scientists are already working on how to avoid it.

Infection or cure? Scientists from Tel Aviv University and the University of Glasgow genetically modified the Toxoplasma gondii to bring a protein inside neurons. The novelty of using a protozoan that can travel from the gut to parasitize the CNS contrasts with the possibility of causing a disease. The scientists are already working on how to avoid it.

Neurotech International Ltd.’s cannabinoid NTI-164 met the primary and secondary endpoints in a phase II/III trial in children with autism spectrum disorder. The company also reported positive top-line data for Rett syndrome in a phase I/II trial.