Provided herein are processes for preparing an oligomer (e.g., a morpholino oligomer). The synthetic processes described herein may be advantageous to scaling up oligomer synthesis while maintaining overall yield and purity of a synthesized oligomer.

The present disclosure provides siRNA that suppresses proliferation of new coronaviruses (SARS-CoV-2). The siRNA disclosed herein includes: a sense strand; and an antisense strand. The sense strand includes a target sequence comprising 19 to 23 bases in which a base at a 5′ terminal is guanine (G) or cytosine (C), and an overhang comprising 2 to 4 bases added to a 3′ terminal side of the target sequence. The antisense strand includes a sequence complementary to the target sequence, and an overhang comprising 2 to 4 bases added to a 3′ terminal side of the complementary sequence. Here, at least a part of the target sequence contains at least a part of a base sequence encoding a signal peptide region of a spike protein (S protein) of SARS-CoV-2.

This disclosure concerns an engineered polynucleotide that interacts with a pre-mRNA and a spliceosome to regulate gene expression. The engineered polynucleotide may have stem-loop structure that recruits the spliceosome and targeting sequences that are complementary to a target sequence at an exon-intron splice junction and may include nucleotides with 2′ modifications and phorphorothioate linkages.

Oligonucleotides are provided herein that inhibit NR1H3 expression. Also provided are compositions including the same and uses thereof, particularly uses relating to treating diseases, disorders and/or conditions associated with NR1H3 expression.

An oligo- or polynucleotide analogue having one or more structures of the general formula: where B is a pyrimidine or purine nucleic acid base, or an analogue thereof, is used for treating obesity-related metabolic diseases.

The present disclosure provides antisense oligonucleotides, compositions, and methods that target ATP7B exon 6 or a flanking intron, thereby modulating splicing of ATP7B pre-mRNA to increase the level of ATP7B mRNA molecules having exon 6, e.g., to provide a therapy for Wilson disease. The present disclosure provides an antisense oligonucleotide including a nucleobase sequence at least 70% complementary to an ATP7B target sequence in exon 6, a 5′-flanking intron, a 3′-flanking intron, or a combination of exon 6 and the 5′-flanking or 3′-flanking intron.

The invention relates to RNA editing oligonucleotides (EONs) that can bring about specific editing of a target nucleotide (adenosine) in a target RNA molecule in a eukaryotic cell, wherein said oligonucleotide is for use in the treatment of Stargardt disease, and more preferably for the deamination of target adenosines present in the ABCA4 pre-mRNA or ABCA4 mRNA.

The invention concerns KDM5A inhibitors for use in prevention or treatment of idiopathic inflammatory myopathies such as polymyositis, dermatomyositis, necrotizing autoimmune myopathy, and in particular sporadic inclusion body myositis, and diagnosis of these diseases based on KDM5A expression levels in muscle tissue. The invention further concerns pharmaceutical compositions comprising KDM5A inhibitors for use in prevention or treatment of idiopathic inflammatory myopathies such as polymyositis, dermatomyositis, necrotizing autoimmune myopathy, and in particular sporadic inclusion body myositis.

The present disclosure provides, among other things, improved compositions and methods for treating muscular dystrophy. For example, the disclosure provides methods for treating Duchenne muscular dystrophy patients having a mutation in the DMD gene that is amenable to exon 53 skipping by administering an effective amount of golodirsen.

The present disclosure features useful compositions and methods to treat trinucleotide repeat expansion disorders, e.g., in a subject in need thereof. In some aspects, the compositions and methods described herein are useful in the treatment of disorders associated with OGG1 activity.