Directed evolution has become a central pillar in gene therapy. This engineering strategy enables the generation of more efficient variants of genetic editors and delivery vectors. Molecular diversification methods are increasingly sophisticated and are now accelerated by machine learning and AI tools, as showcased at the 29th Annual Meeting of the American Society of Gene and Cell Therapy (ASGCT) held in Boston this week.

An experimental gene therapy based on the prime editing technique could become an effective treatment for alternating hemiplegia of childhood, a severe and currently incurable rare disease. David Liu’s lab at the Broad Institute, the inventor of this gene edition methodology, together with scientists from The Jackson Laboratory, successfully reversed the effects of five mutations associated with this disorder in a mouse model.

An experimental gene therapy based on the prime editing technique could become an effective treatment for alternating hemiplegia of childhood, a severe and currently incurable rare disease. David Liu’s lab at the Broad Institute, the inventor of this gene edition methodology, together with scientists from The Jackson Laboratory, successfully reversed the effects of five mutations associated with this disorder in a mouse model.

Since the development of the base and prime editing technique by David Liu at the Broad Institute, their applications in biomedicine have continued to grow, reaching 17 clinical trials for base editing and one clinical assay for prime editing. The 28th Annual Meeting of the American Society of Gene & Cell Therapy (ASGCT) marked a historic milestone this year by presenting the first case of treatment with base editors of a baby with a deadly metabolic disease.

Prime Medicine Inc. has announced its new preclinical program for the treatment of α1-antitrypsin deficiency (AATD). The program is advancing through its final stages of lead optimization, with an IND and/or clinical trial application (CTA) filing anticipated around the middle of next year.

Some rare skin diseases not only reduce the quality of life of patients, but also can be devastating conditions, leading to amputations or death. At the 31st annual congress of the European Society of Gene and Cell Therapy (ESGCT), held last week in Rome, different laboratories showcased their approaches to editing mutations related to this group of diseases.

Researchers from Broad Institute and Harvard University presented the discovery of all-in-one virus-like particles (VLPs) designed to deliver prime editor (PE) ribonucleoprotein (RNP) complexes into mammalian cells.

Modifying a patient’s DNA is no longer just for science fiction novels. The CRISPR gene editing technique developed by Jennifer Doudna and Emmanuelle Charpentier only took 10 years to reach the market as Casgevy (exagamglogene autotemcel/exa-cel, Vertex Pharmaceuticals Inc.), treating congenital pathologies such as β-thalassemia and severe sickle cell disease. But science does not stop.