Abstract: The present invention relates to compositions comprising and methods of using synthetic polynucleotides, e.g., modified mRNA, encoding CRISPR related proteins including dCAS9 and synthetic sgRNAs targeting a gene of interest.

Abstract: Materials and methods for treating a patient with hemoglobinopathy, both ex vivo and in vivo and materials and methods for deleting at least a portion of a human beta globin locus on chromosome 11 in a human cell by genome editing and thereby increasing the production of fetal hemoglobin (HbF).

Abstract: The invention relates to compositions and methods for the preparation, manufacture and therapeutic use of polynucleotides, primary transcripts and mmRNA molecules.

Abstract: The disclosure features methods of reducing or inhibiting an anti-drug antibody response in a subject, as well as methods of reducing or inhibiting unwanted immune cell activation in a subject to be treated with a messenger RNA (mRNA), comprising administering to the subject a mRNA, e.g., a chemically modified messenger RNA (mmRNA), encoding a polypeptide of interest, wherein the mRNA comprises at least one microRNA (miR) binding site for a miR expressed in immune cells, such as miR-126 binding site and/or miR-142 binding site, such that an anti-drug antibody response to the polypeptide or interest, or unwanted immune cell activation (e.g., B cell activation, cytokine secretion), is reduced or inhibited in the subject. The disclosure further provides therapeutic treatment regimens designed to reduce or inhibit ADA or unwanted immune cell activation (e.g., B cell activation, cytokine secretion) in a subject being treated with mRNA-based therapeutics.

Abstract: Provided are materials and methods for treating patients with hemoglobinopathies, either ex vivo or in vivo. Also provided are materials and methods for deleting and/or mutating a portion of a human beta globin locus on chromosome 11 and one or more of: a BCL11 A gene on chromosome 2, and a DNA sequence that encodes a transcriptional control region of the BCL11 A gene on chromosome 2, in a human cell by genome editing and thereby increasing the production of fetal hemoglobin (HbF) in the genome-edited human cells.

Abstract: The present invention relates to compositions comprising and methods of using synthetic polynucleotides, e.g., modified mRNA, encoding CRISPR related proteins including dCAS9 and synthetic sgRNAs targeting a gene of interest.

Abstract: The invention relates to compositions and methods for the preparation, manufacture and therapeutic use of polynucleotides, primary transcripts and mmRNA molecules.

Abstract: The invention relates to compositions and methods for the manufacture and optimization of modified mRNA molecules via optimization of their terminal architecture.

Abstract: Provided herein, in some embodiments, are methods and compositions for treatment of subjects with ?-thalassemia and subjects with severe sickle cell disease using autologous CRISPR-Cas9 modified CD34+ human hematopoietic stem and progenitor cells.

Abstract: The disclosure features methods of reducing or inhibiting an anti-drug antibody response in a subject, as well as methods of reducing or inhibiting unwanted immune cell activation in a subject to be treated with a messenger RNA (mRNA), comprising administering to the subject a mRNA, e.g., a chemically modified messenger RNA (mmRNA), encoding a polypeptide of interest, wherein the mRNA comprises at least one microRNA (miR) binding site for a miR expressed in immune cells, such as miR-126 binding site and/or miR-142 binding site, such that an anti-drug antibody response to the polypeptide or interest, or unwanted immune cell activation (e.g., B cell activation, cytokine secretion), is reduced or inhibited in the subject. The disclosure further provides therapeutic treatment regimens designed to reduce or inhibit AD A or unwanted immune cell activation (e.g., B cell activation, cytokine secretion) in a subject being treated with mRNA-based therapeutics.

Abstract: Materials and methods for treating a patient with a hemoglobinopathy, both ex vivo and in vivo, and materials and methods for deleting, modulating, or inactivating a transcriptional control sequence of a BCL11A gene in a cell by genome editing.

Abstract: The invention relates to a pharmaceutical composition including a plurality of lipid nanoparticles having a mean particle size of between 80 nm and 160 nm and containing an mRNA encoding a polypeptide. The lipid nanoparticles include a cationic lipid, a neutral lipid, a cholesterol, and a PEG lipid. The mRNA contains a 5?-cap, 5?-UTR, a 3?-UTR, and a poly-A region with at least 100 nucleotides.

Abstract: The invention relates to compositions and methods for the manufacture and optimization of modified mRNA molecules via optimization of their terminal architecture.

Abstract: Materials and methods for treating a patient with a hemoglobinopathy, both ex vivo and in vivo, and materials and methods for creating permanent changes to the genome that can result in at least one deletion, insertion, modulation, or inactivation of a transcriptional control sequence of a BCL11A gene in a cell by genome editing.

Abstract: Materials and methods for treating a patient with hemoglobinopathy, both ex vivo and in vivo and materials and methods for deleting at least a portion of a human beta globin locus on chromosome 11 in a human cell by genome editing and thereby increasing the production of fetal hemoglobin (HbF).

Abstract: The invention relates to compositions and methods for the preparation, manufacture and therapeutic use of polynucleotides, primary transcripts and mmRNA molecules.

Abstract: Materials and methods for treating a patient with a hemoglobinopathy, both ex vivo and in vivo, and materials and methods for deleting, modulating, or inactivating a transcriptional control sequence of a BCL11A gene in a cell by genome editing.

Abstract: The invention relates to compositions and methods for the preparation, manufacture and therapeutic use of signal-sensor polynucleotides, primary transcripts and mmRNA molecules.

Abstract: Described are methods for production of RNA transcripts using a non-amplified, linearized DNA tempate in an in vitro transcription reaction. Enzymatic 5? capping and oligo dT purification can also be included in the methods.

Abstract: The invention relates to compositions and methods for the manufacture and optimization of modified mRNA molecules via optimization of their terminal architecture.