Circular RNA (circRNA) is not a new concept, but it is a novel strategy in the field of gene and cell therapy. While mRNA vaccines have revolutionized medicine, this RNA fragment without free ends surpasses their performance in both efficacy and durability, bringing it to the attention of several pioneering companies. The latest advances in circRNA presented at the 29th Annual Meeting of the American Society of Gene and Cell Therapy (ASGCT) clearly surpass the performance achieved with linear mRNA.
The U.K. Medicines and Healthcare products Regulatory Agency (MHRA) has opened a consultation on changes it is proposing to the legal definition of gene therapies, to reflect the advances in technology and manufacturing over the two decades since the current legislation was drawn up. The aim is to correct the mismatch between regulatory terminology and modern science, which MHRA says “can lead to uncertainty” over how a product is classified and to “inconsistent oversight and potential barriers for developers."
Uniqure NV is the latest firm to get caught between the FDA’s shifting demands for “gold standard” science and regulatory flexibility for rare disease therapies. The company disclosed in its latest earnings report that U.S. regulators are calling for a sham-controlled study before they will consider approval of gene therapy AMT-130 in Huntington’s disease, a requirement that could set the program back by two to three years and raises potential ethical issues.
Several neurodegenerative diseases, including Alzheimer’s disease, frontotemporal dementia and progressive supranuclear palsy, are classified as tauopathies due to the pathological accumulation of tau protein in specific brain nuclei. Researchers in Argentina have proposed the use of RNA interference (RNAi)-mediated therapies using viral vectors to target tau.
MicroRNAs (miRNAs) are small noncoding RNAs gaining increasing attention due to their crucial role in gene expression regulation and influence in various cellular processes and diseases. miRNAs can be encapsulated in extracellular vesicles (EVs), which are released by most cell types to modulate gene expression in recipient cells.
Regulus Therapeutics Inc. CEO Jay Hagan told investors in a January call the company had no interest in “simply out-licensing” rights to lead candidate farabursen, an oligonucleotide targeting autosomal dominant polycystic kidney disease set to start phase III testing on a path to a potential accelerated approval. And now, there’s no need to, as Regulus found a buyer for the whole company in a deal with Novartis AG valued at about $1.7 billion.
In an indication that has proved difficult for biopharma to conquer, Regulus Therapeutics Inc. disclosed further positive data from its ongoing phase Ib study testing RGLS-8429 in autosomal dominant polycystic kidney disease and laid out its plans to move straight into a phase III trial later this year, with the potential for an accelerated U.S. approval.
Cardiovascular disease is among the leading causes of death in individuals with type 2 diabetes. The role that microRNA 210 (miR-210) plays in endothelial cells and in diabetes-driven endothelial dysfunction is not clearly understood. Its potential as a therapeutic target was investigated.
