NCIt definition : A preparation of autologous T-lymphocytes that have been genetically engineered to
express a chimeric antigen receptor (CAR) targeting the immunoregulatory protein B7-homologue
3 (B7-H3, CD276) and containing, as of yet undisclosed co-stimulatory signaling domains,
with potential immunostimulating and antineoplastic activities. Upon infusion back
into the patient, autologous anti-B7-H3 CAR T cells CAR.B7-H3T target and bind to
B7-H3-expressing tumor cells, thereby inducing selective toxicity in B7-H3-expressing
tumor cells. B7-H3, a type I transmembrane protein and a member of the B7 co-stimulatory
protein superfamily, is overexpressed on certain tumor cell types and on various immune
cells. It is a negative regulator of the T-cell activation and its overexpression
plays a key role in tumor cell invasion and metastasis.;