In a recent publication in Molecular Therapy, researchers from Drexel University College of Medicine and UMass Chan Medical School presented a silence-and-replace gene therapy strategy aiming to address both the gain-of-toxicity and loss-of-function components of the disease hereditary spastic paraplegia (HSP).

SYNGAP1-related disorders (SRDs) are rare neurodevelopmental conditions characterized by a wide range of symptoms, including intellectual disability, epilepsy, motor deficits and increased risk-taking behavior.

Gene editing technologies are moving forward in preclinical development with innovative strategies designed to treat diseases at their root and even reverse them.

Gene editing technologies are moving forward in preclinical development with innovative strategies designed to treat diseases at their root and even reverse them. However, many approaches still struggle to reach target cells or tissues – either they fail to arrive, or their efficacy is low. In vivo therapies face numerous challenges, but despite these hurdles, 2025 has marked a year of remarkable progress.

Gene editing technologies are moving forward in preclinical development with innovative strategies designed to treat diseases at their root and even reverse them. However, many approaches still struggle to reach target cells or tissues – either they fail to arrive, or their efficacy is low. In vivo therapies face numerous challenges, but despite these hurdles, 2025 has marked a year of remarkable progress.

Gene therapy has had its commercial struggles in the past year. The cost to patients is in the millions and fewer are stepping forward for treatment than companies would like. While development continues in this game-changing field, some have struggled with regulatory authorities during development while others have just stepped away altogether.

Rznomics Inc. continued South Korea’s year-end biotech rally with a ₩46.35 billion (US$31.35 million) IPO Dec. 18. Proceeds will fund Seongnam-si, South Korea-based Rznomic’s pipeline of gene therapies, built on the company’s trans-splicing ribozyme RNA Replacement Enzyme technology platform.

Viatris Inc. has announced FDA clearance of its IND application for MR-146, an Enriched Tear Film (ETF) AAV gene therapy candidate for the treatment of neurotrophic keratopathy. The company plans to initiate a phase I/II trial in patients with neurotrophic keratopathy in the first half of next year.

Rznomics Inc. continued South Korea’s year-end biotech rally with a ₩46.35 billion (US$31.35 million) IPO Dec. 18. Proceeds will fund Seongnam-si, South Korea-based Rznomic’s pipeline of gene therapies, built on the company’s trans-splicing ribozyme RNA Replacement Enzyme technology platform.

Addition Therapeutics came out of stealth mode to highlight its Precise RNA-Mediated Insertion of Transgenes (PRINT) gene therapy platform. The system is based on research of retrotransposons by Kathleen Collins’ laboratory at University of California, Berkeley, that was spun out into Addition in 2021.