Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, antibodies, antibody fragments, etc., that specifically bind a MS4A4A polypeptide, e.g., a mammalian MS4A4A or human MS4A4A, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind a TREM1 protein, e.g., a mammalian TREM1 or human TREM1, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: Provided herein are transgenic non-human animals whose genomes comprise two or more human genes selected from TREM1, TREML1, TREM2, TREML2, and TREML4, to methods of screening candidate agents that bind to and/or modulate the function and/or activity of at least one of the human genes in the transgenic non-human animals, and to methods of screening candidate agents to determine their effect on one or more activities and/or functions associated with expression of at least one of the human genes in the transgenic non-human animals. Further provided herein are methods of recapitulating a human TREM immune system in a non-human animal, and methods of generating a non-human animal disease model comprising a human TREM repertoire.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Siglec-5 protein, e.g., human Siglec-5 or a mammalian Siglec-5, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, antibodies, antibody fragments, etc., that specifically bind a SIRPA polypeptide, e.g., a mammalian SIRPA or human SIRPA, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal antibodies, antibody fragments, etc., that specifically bind a TMEM106B polypeptide, e.g., a mammalian TMEM106B or human TMEM106B, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a CD33 protein, e.g., human CD33 or a mammalian CD33, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a CD33 protein, e.g., human CD33 or a mammalian CD33, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Sortilin protein, e.g., human Sortilin or a mammalian Sortilin, and use of such compostions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, affinity-matured, humanized antibodies, antibody fragments, etc., that specifically bind a Sortilin protein, e.g., human Sortilin or mammalian Sortilin, and have improved and/or enhanced functional characteristics, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Siglec-7 protein, e.g., human Siglec-7 or a mammalian Siglec-7, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Sortilin protein, e.g., human Sortilin or a mammalian Sortilin, and use of such compostions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Sortilin protein, e.g., human Sortilin or a mammalian Sortilin, and use of such compostions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Siglec-5 protein, e.g., human Siglec-5 or a mammalian Siglec-5, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind one or more epitopes within a CD33 protein, e.g., human CD33 or a mammalian CD33, and have improved and/or enhanced functional characteristics, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind on or more epitopes within a Sortilin protein, e.g., human Sortilin or a mammalian Sortilin, and use of such compostions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, antibodies, antibody fragments, etc., that specifically bind a SIRPA polypeptide, e.g., a mammalian SIRPA or human SIRPA, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: The present disclosure is generally directed to compositions that include antibodies, e.g., monoclonal, chimeric, humanized antibodies, antibody fragments, etc., that specifically bind one or more epitopes within a CD33 protein, e.g., human CD33 or a mammalian CD33, and have improved and/or enhanced functional characteristics, and use of such compositions in preventing, reducing risk, or treating an individual in need thereof.

Abstract: Provided herein are transgenic non-human animals whose genomes comprise two or more human genes selected from CD33, Siglec-5, Siglec-7, Siglec-9, Siglec-11, Siglec-14, and Siglec-16, to methods of screening candidate agents that bind to and/or modulate the function and/or activity of at least one of the human genes in the transgenic non-human animals, and to methods of screening candidate agents to determine their effect on one or more activities and/or functions associated with expression of at least one of the human genes in the transgenic non-human animals. Further provided herein are methods of recapitulating a human Siglec immune system in a non-human animal, and methods of generating a non-human animal disease model comprising a human Siglec repertoire.

Abstract: The present disclosure generally relates to antigen-binding proteins (ABPs) that specifically bind to apolipoprotein E (ApoE), compositions comprising such ABPs, methods of using such ABPs, and methods of making such ABPs. In some embodiments, the ABPs provided herein bind lipidated ApoE4. In some embodiments, the lipidated ApoE4 is within a lipoprotein particle, and the ABPs therefore bind to a lipoprotein particle comprising ApoE4. Any suitable ABP may be used. In some embodiments, the ABP is an antibody. In some embodiments, the ABP is an alternative scaffold. The ABPs provided herein may be used for the prevention or treatment of any disease, condition or disorder associated with ApoE4 expression.