Vivacta is a GRIT in vivo CAR-T platform spinout developing CD19 mRNA/tLNP candidate GT801. A first-in-human study is registered as NCT07205315. Its October 2026 U.S. orphan designation for AIHA is not approval or proof of efficacy; GT801 is shared with the GRIT profile.
2026-04-29 · Series A + A+ (combined disclosure) · Over US$50 million across Series A and A+; not a single-round amount ↗
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Profile review: 2026-11-04 · Fields retain their individual source dates. Undisclosed values are not zero; early or historical events do not establish the latest financing. Awards and acquisitions are distinguished from equity rounds.
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Technology, programs & evidence
Vivacta is a GRIT in vivo CAR-T platform spinout developing CD19 mRNA/tLNP candidate GT801. A first-in-human study is registered as NCT07205315. Its October 2026 U.S. orphan designation for AIHA is not approval or proof of efficacy; GT801 is shared with the GRIT profile.
Program / service
Target / indication
Representative stage
Evidence & scope
GT801
CD19 · See program source; distinguish indications
Exploratory human study / IIT
Human research disclosed or registered; efficacy is not established.
Related news & literature
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A Nature Materials study describes mRNA-loaded LNPs that reprogram tumor-associated macrophages into Claudin18.2-targeting CAR macrophages. The lipid formulation also promotes TREM2 internalization and degradation, reshaping immune responses. The original abstract reports tumor suppression and longer survival with PD-1 blockade in mice, plus ex vivo patient-sample findings. These findings do not demonstrate clinical efficacy in treated patients.
CSPC announced initiation of the first Chinese center for SYS6055-003, a Phase 1/2 trial in relapsed or refractory B-cell non-Hodgkin lymphoma. SYS6055 uses lentiviral vectors to generate CD19-targeting CAR-T cells in vivo. The company said recruitment and screening are underway following October clinical-trial authorization. Center initiation does not establish patient dosing, efficacy, or marketing approval.
Azalea reported SITC preclinical findings for its dual-vector in vivo CAR-T platform, combining targeted CRISPR-Cas9 delivery with AAV-mediated CAR insertion at the TRAC locus. The company described leukemia clearance and protection after tumor rechallenge in selected mouse groups, plus dual-antigen and armored designs. These are animal findings, not evidence of efficacy or safety in patients.
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