Chimeric Therapeutics provided an update to 22 December 2022 announcement and confirm that all patients dosed in the 3rd patient cohort in City of Hope National Medical Center's phase 1A CHM 1101 (CLTX CAR T) cell therapy clinical trial have now advanced beyond the 28-day follow up period without experiencing dose- limiting toxicities. Patients in the 3rd dose cohort received a total dose of 240 X 106 CHM 1101 (CLTX CAR T) cells
through dual routes of intratumoral (ICT) and intraventricular (ICV) administration. Achievement of this milestone enables the trial to advance to the 4th and final dose cohort wherein subjects will be treated with a total dose of 440 X 106 CHM 1101 CAR T cells by ICT and ICV administration. City of Hope, one of the larger cancer research and treatment organizations in the United States, initiated and is leading the current Phase 1A CHM 1101 (CLTX CAR T) cell therapy clinical trial. Chimeric Therapeutics has licensed the exclusive global rights to intellectual property covering the chlorotoxin CAR-T cells from City of Hope. The Phase 1A study aims to enroll 18-36 patients with MMP2+ recurrent or progressive GBM across four dose levels. Study objectives are to evaluate the safety and efficacy of CLTX CAR T and to establish recommended dosing for a phase 2 trial. CHM 1101 (CLTX CAR T) is a novel and promising CAR T therapy developed for the treatment of patients with solid tumours. CHM 1101 is currently being studied in a phase 1 clinical trial in recurrent /progressive glioblastoma. Initial positive data has been presented on patients treated in the first two dose levels of the trial. Additional work is being undertaken to expand CLTX to additional solid tumours, beginning with metastatic melanoma. CHM 2101 (CDH17 CAR T) is a novel, 3rd generation CDH17 CAR T invented at the world-renowned cell therapy centre, the University of Pennsylvania. Preclinical evidence for CHM 2101 was published in March 2022 in Nature Cancer. CHM 2101 (CDH17 CAR T) is currently in preclinical development with a planned phase 1 clinical trial in gastrointestinal tumours. CHM 0201 (CORE-NK platform) is a clinically validated, off the shelf natural killer (NK) cell platform. Data from the complete phase 1 clinical trial was published in March 2022, demonstrating safety and efficacy in blood cancers and solid tumours. Based on the promising activity signal demonstrated in that trial, an additional Phase1B clinical trial investigating CHM 0201 in combination with IL2 and Vactosertib is now underway. From the CHM 0201 platform, Chimeric has initiated development of four new next generation NK and CAR NK assets with plans for phase 1 clinical trials in solid tumours and blood cancers.