Company: CERO
Filing Date: 2025-12-05
Form Type: S-1
Source: 0001213900-25-118817
Chunk: 172

Company: CERO THERAPEUTICS HOLDINGS, INC.
Filing Date: 2025-12-05
Form: S-1
Chunk 172
---
ulture studies with CER-1236. Similar to in vitro cytotoxicity results observed with B cell malignancy and NSCLC cell lines, we show the addition of CER-1236 alone to AML cell lines demonstrates potent cell killing activity. Kasumi-1 harbors a p53 mutation, marking a subset of unfavorable disease risk AML patients, while MV4-11 cells carry a FLT-3 mutation, a proliferative AML leukemia subset. Both cell lines co-cultured with untransduced T cells displayed minimal changes in cell number as compared to cells incubated in the absence of T cells. CER-1236 T cells secreted multiple cytokines in co-cultures with AML cell lines, including IFNγ, granzyme B and TNFα, all indicative of robust and sustained T cell cytotoxicity. CER-1236 T cells demonstrate robust in vivo elimination of MCL xenografts The cancer killing capacity of CER-1236 that was demonstrated in studies involving MCL cell lines was also noted in a mouse xenograft model. Immune deficient NOD scid gamma (“NSG”) mice were xenografted with the human REC-1 cell line at Day -2 and then treated with 8 mg/kg ibrutinib or vehicle and administered CER-1236 T cells daily from Day -1 to study completion. Administration of 7.5e6 CER-1236 T cells in the presence of ibrutinib resulted in the elimination of REC-1 tumor burden in all 11 of the mice in this treatment cohort. The administration of CER-1236 T cells in the absence of ibrutinib eliminated the tumors in all nine animals treated with CER-1236 T cells alone. No tumor growth inhibition was observed in either the vehicle-treated or ibrutinib-treated control groups. Median survival for mice receiving CER-1236 T cells with or without co-administration of ibrutinib was not reached during the study period. The results of this study are presented in the charts below. 101 A single infusion of CER-1236 T cells eliminates tumors and improves survival The level of CER-1236 T cells in peripheral blood displayed robust expansion at Day 7, with or without the concomitant administration of ibrutinib. Animals that received CER-1236 T cells demonstrated an expansion of over 400-fold as compared to Day