The present disclosure provides double stranded oligonucleotides, compositions, and methods relating thereto. The present disclosure encompasses the recognition that structural elements of double stranded oligonucleotides, such as base sequence, chemical modifications (e.g, modifications of sugar, base, and/or internucleotidic linkages) or patterns thereof, and/or stereochemistry (e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)), and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g, RNA interference (RNAi) activity, stability, delivery, etc. The present disclosure also provides methods for treatment of diseases using provided double stranded oligonucleotide compositions, for example, in RNA interference.

The disclosure relates to double stranded ribonucleic acid interference (dsRNAi) agents and compositions targeting a microtubule-associated protein tau (MAPT) gene, as well as methods of inhibiting expression of a MAPT gene and methods of treating subjects having a MAPT-associated disease or disorder, e.g., Alzheimer's disease, frontotemporal dementia, progressive supranuclear palsy, or other tauopathies, using such dsRNAi agents and compositions.

The invention relates to the field of oligonucleotide therapeutics, and in particular to poly oligo oligonucleotides conjugates where two or more antisense oligonucleotides are covalently linked by physiologically labile linkers, and to a biocleavable functional group such as a conjugate group.

The invention relates to a method of identifying stereodefined phosphorothioate oligonucleotide variants with reduced toxicity by creating and screening libraries of stereodefined chiral phosphorothioate variants for compounds with reduced toxicity, either in vitro or in vivo.

This invention relates to compounds, compositions, and methods useful for reducing AT3 target RNA and protein levels via use of dsRNAs, e.g., Dicer substrate siRNA (DsiRNA) agents.

Aspects of the disclosure relate to complexes comprising a muscle-targeting agent covalently linked to a molecular payload. In some embodiments, the muscle-targeting agent specifically binds to an internalizing cell surface receptor on muscle cells. In some embodiments, the molecular payload promotes the expression or activity of a functional dystrophin protein. In some embodiments, the molecular payload is an oligonucleotide, such as an antisense oligonucleotide, e.g., an oligonucleotide that causes exon skipping in a mRNA expressed from a mutant DMD allele.

The present invention provides oligomeric compounds. Certain such oligomeric compounds are useful for hybridizing to a complementary nucleic acid, including but not limited, to nucleic acids in a cell. In certain embodiments, hybridization results in modulation of the amount, activity, or expression of the target nucleic acid in a cell. In certain embodiments, hybridization results in selective modulation of the amount, activity, or expression of a target Huntingtin gene or Huntingtin transcript in a cell.

Disclosed herein are compounds and methods for modulating C9orf72 transcript. Such compounds and methods are useful to treat, prevent, or ameliorate neurodegenerative diseases in an individual in need thereof.

The present invention relates to new nucleic acid molecules of therapeutic interest, in particular for use in the treatment of cancer.

The present invention relates to chemical modification motifs for oligonucleotides. The oligonucleotides of the present invention, such as chemically modified antisense oligonucleotides, can have increased in vivo efficacy. The chemically modified oligonucleotides provide advantages in one or more of potency, efficiency of delivery, target specificity, toxicity, and/or stability. The chemically modified oligonucleotides have a specific chemical modification motif or pattern of locked nucleic acids (LNAs). The oligonucleotide (e.g. antisense oligonucleotide) can target RNA, such as miRNA or mRNA. Also provided herein are compositions comprising the chemically modified oligonucleotides and methods of using the chemically modified oligonucleotides as therapeutics for various disorders, including cardiovascular disorders.