The present invention provides gapped oligomeric compounds comprising from 1 to about 3 internucleoside linkages having one of formulas I to XVI. In certain embodiments, inclusion of from 1 to about 3 internucleoside linkages of one of formulas I to XVI, improves selectivity for a target RNA relative to an off target RNA. In certain embodiments, the improved selectivity also provides an improved toxicity profile. 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 of activity or expression of the target nucleic acid in a cell.

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.

The present invention relates to nucleic acids for inhibiting expression of a target gene in a cell, comprising at least one duplex region that comprises at least a portion of a first strand and at least a portion of a second strand that is at least partially complementary to the first strand, wherein said first strand is at least partially complementary to at least a portion of RNA transcribed from said target gene to be inhibited. The first strand of the nucleic acid has a terminal 5′ (E)-vinylphosphonate nucleotide that is linked to the second nucleotide in the first strand by a phosphodiester linkage.

The present disclosure relates to compositions, such as siRNA molecules and FN3 domains conjugated to the same, as well as methods of making and using the molecules.

This disclosure relates to an siRNA-lipid conjugate of formula Y-L-(H).sub.n. Y is an siRNA molecule, L is a linker covalently bonded to Y and H, each H is independently a hydrophobic chain comprising 5 to 50 carbon atoms, n is 1, 2, or 3, and linker L is bonded to the 3′ end of the sense strand of the siRNA.

The present invention relates to modified guide RNAs and their use in clustered, regularly interspaced, short palindromic repeats (CRISPR)/CRISPR-associated (Cas) systems.

Novel oligonucleotides that enhance silencing of the expression of a gene containing a single nucleotide polymorphism (SNP) relative to the expression of the corresponding wild-type gene are provided. Methods of using novel oligonucleotides that enhance silencing of the expression of a gene containing a SNP relative to the expression of the corresponding wild-type gene are provided.

The present invention relates to modified guide RNAs and their use in clustered, regularly interspaced, short palindromic repeats (CRISPR)/CRISPR-associated (Cas) systems.

The present invention relates to modified guide RNAs and their use in clustered, regularly interspaced, short palindromic repeats (CRISPR)/CRISPR-associated (Cas) systems.

The present disclosure provides oligomeric compound comprising a modified oligonucleotide having a central region comprising one or more modifications. In certain embodiments, the present disclosure provides oligomeric compounds having an improved therapeutic index or an increased maximum tolerated dose.