Immune cells comprising modification to increase the expression or activity of SERPINB9 are disclosed. Also disclosed are compositions comprising such cells and methods of using such cells and compositions.

The present application provides single-domain antibodies targeting BCMA, and chimeric antigen receptors (such as monovalent CAR, and multivalent CAR including bi-epitope CAR) comprising one or more anti-BCMA single-domain antibodies. Further provided are engineered immune effector cells (such as T cells) comprising the chimeric antigen receptors. Pharmaceutical compositions, kits and methods of treating cancer are also provided.

An isolated chimeric antigen receptor polypeptide (CAR), wherein the CAR comprises an extracellular antigen-binding domain, comprising an antibody or antibody fragment that binds a B Cell Maturation Antigen (BCMA) polypeptide. The CAR preferably binds an epitope comprising one or more amino acids of residues 13 to 32 of the N-terminus of human BCMA. Also disclosed is a nucleic acid molecule encoding the CAR of the invention, a genetically modified immune cell, preferably a T cell, expressing the CAR of the invention and the use of said cell in the treatment of a medical disorder associated with the presence of pathogenic B cells, such as a disease of plasma cells, memory B cells and/or mature B cells, in particular multiple myeloma, non-Hodgkin's lymphoma or autoantibody-dependent autoimmune diseases.

The disclosure provides antibody molecules that bind to TCR V regions and multispecific molecules comprising said antibody molecules. Additionally, disclosed are nucleic acids encoding the same, methods of producing the aforesaid molecules, pharmaceutical compositions comprising aforesaid molecules, and methods of treating a cancer using the aforesaid molecules.

Disclosed are chimeric antigen receptor (CAR) polypeptides comprising a CD229 antigen binding domain, a transmembrane domain, and an intracellular signaling domain. Disclosed are nucleic acid sequences capable of encoding a CAR polypeptide comprising a CD229 antigen binding domain, a transmembrane domain, and an intracellular signaling domain. Also disclosed are vectors and cells comprising one or both of the CAR polypeptides and nucleic acid sequences capable of encoding CAR polypeptides. Also disclosed are methods of treating.

Provided herein are methods and compositions for generating engineered cells, such as cells expressing a recombinant receptor, including methods involving stimulation and/or engineering of an input composition having a defined ratio of nave-like CD4+ T cells to nave-like CD8+ T cells. In particular, the methods can be used to engineer T cells with genetically engineered receptors, such as genetically engineered antigen receptors such as engineered (recombinant) TCRs and chimeric antigen receptors (CARs), or other recombinant chimeric receptors. Features of the methods include producing a more consistent and/or predictable T cell product and/or a product with lower toxicity compared with other methods.

The present disclosure provides chimeric antigen receptor (CAR) molecule specific for B cell maturation antigen (BC-MA), compositions and methods for treating immune-related disorders, specifically, plasma cell pathologies such as multiple myeloma (MM).

The present application provides BCMA targeting chimeric antigen receptor (CAR) comprising a BCMA binding region and an intracellular costimulatory domain derived from DAP10. Further provided are engineered immune effector cells (such as NK cells) comprising the chimeric antigen receptors. Pharmaceutical compositions, kits and methods of treating cancer are also provided.

Provided herein, in some embodiments, are methods and compositions (e.g., cell compositions) for the treatment of cancer.

The invention provides immune effector cells (for example, T cells, NK cells) that express a chimeric antigen receptor (CAR), and compositions and methods thereof.