The present disclosure encompasses engineered meganucleases that bind and cleave recognition sequences within a dystrophin gene. The present disclosure also encompasses methods of using such engineered meganucleases to make genetically modified cells. Further, the disclosure encompasses pharmaceutical compositions comprising engineered meganuclease proteins, or polynucleotides encoding engineered meganucleases of the disclosure, and the use of such compositions for the modification of a dystrophin gene in a subject, or for treatment of Duchenne Muscular Dystrophy.

Disclosed herein are methods of repairing or restoring a sarcoglycan complex or DAPC, stabilizing DAPC, restoring DAPC function, or increasing or enhancing expression of one or more components of a sarcoglycan complex or DAPC in a subject suffering from a muscular dystrophy.

This invention relates to polynucleotides encoding mini-dystrophin proteins, viral vectors comprising the same, and methods of using the same for delivery of mini-dystrophin to a cell or a subject.

The invention provides for recombinant AAV vectors comprising a polynucleotide sequence comprising the guide strand of miR-29c and methods of using the recombinant vectors to reduce or prevent fibrosis in subjects suffering from muscular dystrophy.

The present invention relates a vector system and a vector system for use in a method of treating a disease, each comprising a first vector and a second vector. The present invention further relates to the first vector, the second vector and a combination of the first vector and the second vector. In addition, the present invention relates to a pharmaceutical composition comprising the vector system of the invention or the combination of the invention.

Disclosed herein are nucleic acid molecules, polypeptides, cells, vectors, and pharmaceutical compositions relating to miniaturized dystrophin. Methods of production and methods of therapeutic use of the miniaturized dystrophin are also disclosed.

The present specification provides a drug that causes highly-efficient skipping of exon 51 in the human dystrophin gene. The present specification provides an antisense oligomer having an activity to induce skipping of exon 51 in the human dystrophin gene.

The present invention provides DNA targeting systems and methods for delivery of gene editing machinery using lipid nanoparticles or microparticles.

Polynucleotides comprising the following base sequences: (a) a base sequence encoding a fusion protein of a nuclease-deficient CRISPR effector protein and a transcription activator, and (b) a base sequence encoding a guide RNA targeting a continuous region of 18 to 24 nucleotides in length in a region set forth in SEQ ID NO: 104, 105, 135, 141, 153, 167, or 172 in the expression regulatory region of human Utrophin gene are expected to be useful for treating or preventing DUCHENNE muscular dystrophy or BECKER muscular dystrophy.

Described herein are muscle-specific targeting moieties and compositions including the muscle specific targeting motifs. Also described herein are uses of the muscle-specific targeting motifs and compositions including the muscle specific targeting moieties. In some embodiments, the muscle-specific targeting moieties and compositions including the muscle specific targeting moieties can be used to direct delivery of a cargo to a muscle cell.