Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

autologous anti-MSLN CAR/HLA-A*02-gated inhibitory receptor/B2M shRNA-expressing T lymphocytes A2B694

A preparation of autologous T lymphocytes that have been transduced with a lentiviral vector expressing an activating chimeric antigen receptor (CAR) specific for the tumor-associated antigen (TAA) mesothelin (MSLN), a leukocyte immunoglobulin-like receptor 1 (LIR-1)-based inhibitory receptor specific for human leukocyte antigen (HLA)-A*02 (HLA-A*02), and a short hairpin RNA (shRNA) targeting beta-2 microglobulin (B2M; beta2M), with potential immunomodulating and antineoplastic activities. Upon administration, the autologous anti-MSLN CAR/HLA-A*02-gated inhibitory receptor/B2M shRNA-expressing T lymphocytes A2B694 target and bind to MSLN-expressing tumor cells, thereby killing MSLN-expressing tumor cells that have loss of heterozygosity (LOH) for HLA-A*02 protein. The inhibitory receptor specific for HLA-A*02 acts as a self-regulated safety switch that blocks the killing of HLA-A*02-positive MSLN-expressing normal, healthy cells. HLA-A*02 is expressed on normal cells but not on tumor cells due to LOH. The B2M shRNA disrupts the expression of the B2M component of the HLA class I molecule. MSLN, a cell surface glycoprotein involved in cell adhesion, is overexpressed in a variety of cancer cell types.
Synonym:autologous anti-MSLN CAR T cells A2B694
autologous anti-MSLN logic-gated CAR T cells A2B694
autologous anti-MSLN logic-gated Tmod CAR T cells A2B694
autologous MSLN-directed logic-gated CAR-T cells A2B694
autologous Tmod CAR T cells A2B694
Tmod CAR-T cells A2B694
Code name:A2B 694
A2B-694
A2B694
Search NCI's Drug Dictionary