TS-002177 — Researchers at Nationwide Children's Hospital are in the process of developing an Adeno-Associated Virus (AAV) gene therapy for the Eukaryotic Initiation Factor 2B complex (EIF2B5) related Vanishing White Matter Disease (VWM), an inherited pediatric leukodystrophy disease resulting from autosomal recessive mutations in the five subunit genes of EIF2B5. VWM deteriorates the central nervous system’s white matter which affects the brain’s communication and function. Common symptoms include spasticity, ataxia, hypotonia, speech issues, dysphagia, vision and hearing impairments along with cognitive deficits. The research team is evaluating the CSF delivery of AAV serotype 9 that will target astrocytes which are central in VWM pathology in order to constitute potential therapeutic targets. The AAV vectors will provide wildtype copies of EIF2B5 to address the loss of function resultant from mutations.

TS-000513 — Dystrophinopathies are a group of disorders caused by mutations in the DMD gene which codes for dystrophin, the vital, muscle-specific structural protein. Currently, there is no cure for muscular dystrophy, and patients only rely on palliative care options. Our gene therapy researchers at Nationwide Children’s Hospital have developed an AAV-mediated gene editing method for correcting deleterious DMD mutations in affected patients. This therapy uses a homology-independent targeted integration (HITI) to replace any missing or aberrant exons in affected patients; therefore, correcting the underlying cause of DMD. This therapy will be developed to stop the progression of muscle wasting and fibrosis in individuals with DMD mutations that result in muscular dystrophy via permanent correct of the underlying cause within muscle tissue by replacing missing or aberrant exons using HITI. Advantages By developing AAV-Mediated HITI gene editing for correction of diverse DMD mutations in patients with muscular dystrophy, we can potentially cure BMD and DMD patients. These patients currently have no palliative care options. Our compositions of matter for this approach (i.e. genomic target region, guide-RNA sequences, donor DNA sequences) are new. Stage of Development Proof of concept studies completed Intellectual Property Provisional Patent Pending

TS-000438 — Gene therapy experts at Nationwide Children’s have developed an AAV-mediated CRISPR/Cas9 gene editing method for the correction of exon duplications in patients with DMD (Duchenne muscular dystrophy). This therapy has the potential to permanently corrects DMD by stopping and potentially reversing the progression of muscle wasting and fibrosis in affected individuals. Currently about 11% of DMD cases are caused by exon duplications and our experts plan to use this invention to correct for this underlying cause within muscle tissues.

TS-000308 — Absence of the dystrophin protein leads to the severe muscle disorder Duchenne Muscular Dystrophy (DMD). Nearly asymptomatic patients have been identified to produce a functional N-terminal truncated dystrophin protein. Gene therapy experts at Nationwide Children's Hospital are developing a U7-snRNA exon skipping strategy to facilitate expression of a truncated dystrophin protein for patients carrying mutations within exon 6 to 9 of the DMD gene, rendering their dystrophin nonfunctional. Our experts have effectively skipped exon 8 in patient-derived cell lines and in turn produced a functional truncated dystrophin protein product.

TS-000178 — A novel mouse model for testing exon skipping therapies for DMD disease has been generated at Nationwide Children’s Hospital. This mouse model carries a duplicated exon (exon2) in the DMD gene as compared to a point mutation in the most common mdx mouse model. This unique dystrophic mouse can serve as a preclinical testing model to test various therapies that mediate exon skipping.