Provided are compositions related to HSD17B13 variants, including nucleic acid molecules and polypeptides related to variants of HSD17B13, and cells comprising those nucleic acid molecules and polypeptides. Also provided are methods related to HSD17B13 variants. Such methods include methods for detecting the presence of the HSD17B13 rs72613567 variant in a biological sample comprising genomic DNA, for detecting the presence or levels of any one of variant HSD17B13 Transcripts C, D, E, F, G, and H, and particularly D, in a biological sample comprising mRNA or cDNA, or for detecting the presence or levels of any one of variant HSD17B13 protein Isoforms C, D, E, F, G, or H, and particularly D, in a biological sample comprising protein. Also provided are methods for determining a subject's susceptibility to developing a liver disease or of diagnosing a subject with liver disease.

This disclosure relates to mRNA therapy for the treatment of propionic acidemia (PA). mRNAs for use in the invention, when administered in vivo, encode human propionyl-CoA carboxylase alpha (PCCA) and/or human propionyl-CoA carboxylase beta (PCCB), and isoforms thereof, functional fragments thereof, and fusion proteins comprising PCCA and/or PCCB. mRNAs of the invention are preferably encapsulated in lipid nanoparticles (LNPs) to effect efficient delivery to cells and/or tissues in subjects, when administered thereto. mRNA therapies of the invention increase and/or restore deficient levels of propionyl-CoA carboxylase (PCC) expression and/or activity in subjects. mRNA therapies of the invention further decrease levels of disease-associated toxic metabolites associated with deficient PCCA or PCCB activity, in subjects.

Provided herein are methods for facilitating or inducing stable transgene integration and expression in a proliferating cell, comprising administering to the cell (i) a recombinant AAV (rAAV) vector comprising the transgene flanked by transposon-derived inverted terminal repeat sequences, which sequences are in turn flanked by AAV-derived inverted terminal repeat regions, and (ii) a source of a transposase that recognises said transposon-derived inverted terminal repeat sequences and directs the genomic integration of the transgene into the genome of the proliferating cell. Also provided are methods and transgene delivery systems for the treatment or prevention of diseases affecting, associated with or characterised by proliferating cells, including paediatric liver diseases, bone marrow diseases and cancer.

Compositions and methods for the treatment of leukodystrophy, particularly, H-ABC are disclosed.

Described herein are methods and compositions related to GATA-1 gene therapy for the treatment of Diamond-Blackfan anemia.

Disclosed are nanoparticles that are introduced into cells and express a specific protein and a manufacturing method thereof. More particularly, the present invention relates to mRNA nanoparticles, which increase the expression of a specific protein capable of stimulating the cellular immune system to induce cellular immune responses and are thus applicable to treat a variety of diseases, do not require passage across the nuclear envelope because a desired gene is delivered not as plasmid DNA itself but in the form of mRNA, thus improving the efficiency of protein expression, and the nanoparticles are generated through a one-step process with a relatively small amount of plasmid DNA via rolling circle transcription (RCT), thereby providing a simple and economical process for gene delivery. The present invention is also concerned with such mRNA nanoparticles.

CpG reduced nucleic acid variants encoding FVIII protein and methods of use thereof are disclosed. In particular embodiments, CpG reduced nucleic acid variants encoding FVIII are expressed more efficiently by cells, are secreted at increased levels by cells over wild-type Factor VIII proteins, exhibit enhanced expression and/or activity over wild-type Factor VIII proteins or are packaged more efficiently into viral vectors.

The invention provides splice modulating oligonucleotides (SMOs) designed to modulate the splicing of a RAGE pre-mRNA, compositions including the SMOs, and methods of treating and preventing diseases and conditions using the SMOs and compositions.

The present disclosure provides codon optimized nucleotide sequences encoding human REP1, vectors, and host cells comprising codon optimized REP1 sequences, and methods of treating retinal disorders such as choroideremia comprising administering to the subject a codon optimized sequence encoding human REP1.

Synthetic polynucleotides encoding human methylmalonyl-CoA mutase (synMUT) and exhibiting augmented expression in cell culture and/or in a subject are described herein. An adeno-associated viral (AAV) gene therapy vector encoding synMUT under the control of a liver-specific promoter (AAV2/8-HCR-hAAT-synMUT-RBG) successfully rescued the neonatal lethal phenotype displayed by methylmalonyl-CoA mutase-deficient mice, lowered circulating methylmalonic acid levels in the treated animals, and resulted in prolonged hepatic expression of the product of synMUT transgene in vivo, human methylmalonyl-CoA mutase (MUT).