In one aspect, the invention provides methods of inhibiting the effects of MASP-2-dependent complement activation in a human subject suffering from graft-versus-host disease and/or diffuse alveolar hemorrhage and/or veno-occlusive disease associated with a hematopoietic stem cell transplant. The methods comprise the step of administering, to a subject in need thereof, an amount of a MASP-2 inhibitory agent effective to inhibit MASP-2-dependent complement activation.

Combinations of anti-cancer antibodies and inhibitory antibodies to CD223 overcome immune suppression in cancer patients. The inhibitory antibodies may be generated in an animal by injection of fragments of CD223. Antibodies may be monoclonal antibodies or single chain antibodies or humanized antibodies.

Genetically modified non-human animals and methods and compositions for making and using the same are provided, wherein the genetic modification comprises a humanization of an endogenous signal-regulatory protein gene, in particular a humanization of a SIRPα gene. Genetically modified mice are described, including mice that express a human or humanized SIRPα protein from an endogenous SIRPα locus.

The present invention provides methods, agents, compounds, and compositions useful for administering to subjects having or at risk of having anemias. In certain embodiments, methods herein comprise administering two agents to a subject, which are useful for the treatment of an anemia.

Non-human animals, and methods and compositions for making and using the same, are provided, wherein said non-human animals comprise a humanization of an endogenous cluster of differentiation (CD) gene, in particular a humanization of a CD47 gene. Said non-human animals may be described, in some embodiments, as having a genetic modification to an endogenous CD47 gene so that said non-human animals express a CD47 polypeptide that includes a human portion and a non-human portion (e.g., a murine portion).

Non-human animals, cells, methods and compositions for making and using the same are provided, wherein the non-human animals and cells comprise a humanized B-cell activating factor gene. Non-human animals and cells that express a human or humanized B-cell activating factor protein from an endogenous B-cell activating factor locus are described.

The present invention relates generally to genetically modified non-human animals. The present invention relates to a genetically modified non-human animal, in which at least one copy of the endogenous nucleotide sequence encoding Protein C in the genome of said non-human animal has been replaced by a nucleotide sequence encoding human Protein C, encoding a functional fragment of human Protein C or encoding a functional variant of human Protein C. The invention also relates to vectors, cells and methods for the production of such non-human animals. The invention also relates to methods of testing agents for their ability to alter to the level and/or functional activity of human protein C and thus provides methods of testing agents for their potential therapeutic efficacy.

Combinations of anti-cancer antibodies and inhibitory antibodies to CD223 overcome immune suppression in cancer patients. The inhibitory antibodies may be generated in an animal by injection of fragments of CD223. Antibodies may be monoclonal antibodies or single chain antibodies or humanized antibodies.

The present disclosure relates to the production of red blood cells from hematopoietic stem cells, by differentiating such cells in the presence of a protein that induces cell survival and proliferation.

Non-human animals, and methods and compositions for making and using the same, are provided, wherein said non-human animals comprise a humanization of an endogenous cluster of differentiation (CD) gene, in particular a humanization of a CD47 gene. Said non-human animals may be described, in some embodiments, as having a genetic modification to an endogenous CD47 gene so that said non-human animals express a CD47 polypeptide that includes a human portion and a non-human portion (e.g., a murine portion).