TS-005791 — This invention represents an improved, precision‑based AAV.U7snRNA‑mediated exon‑skipping gene‑therapy platform targeting exon 19 of the DMD gene to treat Duchenne and Becker muscular dystrophies.

TS-005790 — This novel AAV.U7snRNA‑mediated exon‑skipping gene‑therapy platform targets exon 18 of the DMD gene to treat Duchenne and Becker muscular dystrophies. Unlike micro‑dystrophin approaches currently in clinical development, this strategy leverages antisense sequences embedded within optimized U7snRNA cassettes to modulate endogenous DMD splicing and restore native dystrophin expression.

TS-005789 — This novel vitro, cell‑based potency assay for evaluating adeno‑associated virus (AAV)–mediated gene therapies targeting muscle disorders, particularly those utilizing AAV9 vectors. This represents a significant improvement in potency determination workflows, providing a reproducible, scalable, and regulatory‑relevant alternative to animal‑based assays for muscle‑directed gene therapies.

TS-005705 — This dual‑AAV vector system is engineered to produce a highly functional dystrophin protein that mirrors the isoform observed in asymptomatic or minimally symptomatic individuals with naturally occurring deletions across exons 19–44. This approach represents a significant advance over current microdystrophin therapies, such as Elevidys, which have shown limited efficacy and safety issues in certain patient groups.

TS-005704 — This dual‑AAV vector system is engineered to produce highly functional dystrophin protein equivalents found in asymptomatic or minimally symptomatic individuals with naturally occurring dystrophin exon deletions.

TS-005640 — This new gene editing system is based on prime editing, connecting N-terminal mutations in the DMD gene to enable expression of full-length or near-full-length dystrophin. This system also has the advantage of stably incorporating edits into the genome. Current treatments such as exon skipping and microdystrophin gene replacement have not successfully halted disease progression in clinical trials, leaving a critical need for therapies that restore full-length or near-full-length dystrophin, especially for patients with mutations in the N-terminal region of the gene, which have been under-addressed.

TS-005494 — A new approach to correcting mutations in the DMD gene upstream of exon 20 was achieved by inserting into the native intron 19, which holds the sequence of exons 1-19, along with a new promoter. This method builds on previous insertion approaches, bypassing any upstream truncating mutations and allowing full-length dystrophin expression when spliced. The insertion is made through twin prime editing to avoid any double-stranded break of the genome, and can be translated into a therapy for patients.

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.