Memorial Sloan Kettering Cancer Center
Participants will have a sample of their white blood cells, called T cells, collected using a procedure called leukapheresis. The collected T cells will be sent to a laboratory at Memorial Sloan Kettering to be changed (modified) to become MSLN-targeted CAR T cells, the CAR T-cell therapy that participants will receive during the study. Participant study therapy will take about 3-4 weeks.
Inclusion Criteria: * Aged ≥18 years * Diagnosis of pathologically confirmed EG adenocarcinoma * Diagnosis of metastatic or recurrent disease * ECOG performance status of 0-1 * Life expectancy of ≥4 months Inclusion Criteria for Leukapheresis: * Written informed consent for the study (from participant) * Life expectancy of ≥4 months * ECOG performance status of 0-1 * Histologic diagnosis that \& \>25% of the tumor expresses MSLN by IHC analysis. Archival tissue obtained up to 2 years before study enrollment is acceptable. IHC testing of a cell block from cytology (e.g., ascitic fluid) is ac…
Participants with esophagastric adenocarcinoma will be treated with an intraperitoneal infusion of different doses of autologous T cells that have been genetically modified ex vivo to express the M28z1XXPD1DNR CAR. The CAR T cells will be manufactured in MSK's Center for Cell Engineering.