The invention relates to RNAi agents, e.g., double stranded RNAi agents, targeting the Serpina1 gene, and methods of using such RNAi agents to inhibit expression of Serpina1 and methods of treating subjects having a Serpina1 associated disease, such as a liver disorder.

The present disclosure provides half duplex compounds comprising a first oligomeric compound and a second, shorter, oligomeric compound, wherein the first oligomeric compound is complementary to a target nucleic acid and the second oligomeric compound is complementary to the first oligomeric compound. In certain embodiments, the compounds disclosed herein are useful for modulating the expression of extra-hepatic target nucleic acids.

Provided herein are improved delivery systems for oligonucleotides, said delivery system comprising a liposome that comprises neutral phospholipids and a P-ethoxy oligonucleotide, which targets a STAT3-encoding polynucleotide. Methods of treating patients with said delivery systems are also provided.

The invention relates to editing oligonucleotides (EONs) for binding to a target nucleic acid and recruiting an enzyme with nucleotide deamination activity to edit the target nucleic acid. The EONs carry phosphonoacetate internucleotide linkage modifications and/or unlocked nucleic acid (UNA) ribose modifications at specified positions and do not carry such modifications on positions that would lower nucleic acid editing efficiency. The selection of positions that should or should not carry a modification is based on computational modelling that revealed incompatibilities of the modifications with the enzyme with nucleotide deamination activity.

The invention is directed to one or more antisense polynucleotides and their use in pharmaceutical compositions in a strategy to induce exon skipping in the γ-sarcoglycan gene in patients suffering from Limb-Girdle Muscular Dystrophy-2C (LGM-D2C) or in patients at risk of such a disease. The invention also provides methods of preventing or treating muscular dystrophy, e.g., LGMD2C, by exon skipping in the gamma sarcoglycan gene using antisense polynucleotides. Accordingly, in some aspects the invention provides an isolated antisense oligonucleotide, wherein the oligonucleotide specifically hybridizes to an exon target region of a γ-sarcoglycan RNA. In another aspect, the the invention provides a method of inducing exon-skipping of a gamma sarcoglycan RNA, comprising delivering an antisense oligonucleotide or a composition to a cell.

Described are 5′-cyclo-phosphonate modified nucleotides, and oligonucleotides, such as interference (RNAi) agents, containing 5′-cyclo-phosphonate modified nucleotides. The RNAi agents having either double-stranded or single-stranded oligonucleotides described herein comprising 5′cyclo-phosphonate modified nucleotides are useful in modulating gene expression as well as therapeutic, diagnostic, target validation, and genomic discovery applications. The RNAi agents and single-stranded antisense oligonucleotides comprising 5′-cyclo-phosphonate modified nucleotides are useful in the treatment of diseases or conditions that respond to inhibition of gene expression or activity in a cell, tissue, or organism.

Described herein are compositions and methods for inducing Type I interferon production. The compositions described comprise immunostimulatory oligonucleotide duplexes including a 5′ terminal monophosphate-CUGA-3′ (SEQ ID NO. 1) sequence. Compositions comprising the immunostimulatory oligonucleotide duplexes described can be used for the treatment of diseases or disorders that respond to interferons.

Disclosed herein are compounds, compositions and methods for modulating the expression of huntingtin in a cell, tissue or animal. Further provided are methods of slowing or preventing Huntington's Disease (HD) progression using an antisense compound targeted to huntingtin. Additionally provided are methods of delaying or preventing the onset of Huntington's Disease (HD) in an individual susceptible to Huntington's Disease (HD). Also provided are uses of disclosed compounds and compositions in the manufacture of a medicament for treatment of diseases and disorders.

The present disclosure provides methods of using a calcium oscillation assay and/or a sequence score calculation to identify a molecule that is safe for administration. The disclosure also includes a method of selecting or identifying a molecule having tolerable in vivo neurotoxicity using a calcium oscillation assay, a sequence score method, an in vivo tolerability assay, or any combination thereof.

Provided are compounds, methods, and pharmaceutical compositions for reducing the amount or activity of PRNP RNA in a cell or animal, and in certain instances reducing the amount of PrP protein in a cell or animal. Such compounds, methods, and pharmaceutical compositions are useful to ameliorate at least one symptom or hallmark of a neurodegenerative disease. Such symptoms and hallmarks spongiform changes in the brain, development of abnormal protein aggregates, neuronal loss, markers of neuronal loss, rapidly progressing dementia, and death. Such neurodegenerative diseases include prion diseases, Creutzfeldt-Jakob disease (CJD), variant Creutzfeldt-Jakob Disease (vCJD), familial Creutzfeldt-Jakob Disease (fCJD), Gerstmann-Straussler-Scheinker syndrome, fatal familial insomnia, kuru, Alzheimer's disease, or Parkinson's disease.