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.

Researchers from Beacon Therapeutics Holdings Ltd. reported the development of BTX-001, an intravitreal gene therapy designed to target the complement pathway through delivery of a C5 inhibitor.

Fractyl Health Inc. has received clinical trial application authorization in the Netherlands to initiate a first-in-human phase I/II study of RJVA-001, the first clinical candidate from the company’s Rejuva Smart GLP-1 gene therapy platform.

Researchers at Daping Hospital in China have reported that liver-targeted delivery of the APOE3-Christchurch (APOE3Ch) variant, a rare protective form of apolipoprotein E, can indirectly reduce brain pathology, highlighting the therapeutic potential of peripheral approaches to Alzheimer’s disease.

Apertura Gene Therapy LLC and the TSC Alliance have established a collaboration to advance gene therapy programs designed to treat tuberous sclerosis complex (TSC).

Elaaj Bio, a wholly owned subsidiary of the nonprofit Loulou Foundation, has entered into a partnership with Viralgen Vector Core SL to advance a gene therapy program for CDKL5 deficiency disorder.

Dravet syndrome is a rare, severe, lifelong developmental and epileptic encephalopathy that begins in infancy and is marked by prolonged, often fever-triggered seizures that are difficult to control. It is usually caused by mutations in the SCN1A gene and is associated with developmental delay, cognitive and behavioral impairment, and reduced life expectancy.

In previous work, researchers from Kawasaki Medical School and collaborating institutions engineered a modified HEXB construct, modHexB, to improve GM2 ganglioside (GM2) recognition and GM2-activating protein (GM2A) interaction. The team has now combined these previous advancements to develop a new gene therapy strategy for Sandhoff disease.

Previous work showed that neurogenic transcriptional factors, such as NeuroD1 and Neurogenin 2, and small-molecule cocktails can reprogram glioma cells into neuron-like cells while also suppressing their proliferative and invasive phenotypes.