Capstan Therapeutics

Overview
News
Cell & Gene Therapy?
Product stageSegments
Minimum Viable Product
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Cell therapy (Other)
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Capstan Therapeutics is a biotechnology company dedicated to advancing in vivo reprogramming of cells through RNA delivery using targeted lipid nanoparticles (tLNP) technology. The company's proprietary CellSeeker tLNP platform consists of lipid nanoparticles conjugated with a recombinant protein binder, such as a monoclonal antibody, designed to deliver payloads including mRNA or gene editing tools capable of reprogramming specific cell types in vivo. Through this platform, Capstan aims to create therapies that can program immune cells directly inside the body rather than engineering them in a lab. The company's lead candidate, CPTX2309, delivers an mRNA payload encoding for an anti-CD19 CAR to CD8-expressing T cells, effectively engineering CAR-T cells in vivo. The therapeutic goal is to achieve rapid deep B cell depletion in both blood and lymphoid tissues, without the challenges of conventional ex vivo CAR-T. preclinical data presented in October 2023 demonstrated rapid and robust anti-tumor and anti-primary B cell activity in humanized mice through tLNP administration delivering mRNA that encodes an anti-CD19 CAR. Capstan's technology has the potential to generate transformative therapies with applications across autoimmune disorders, oncology, fibrosis, and monogenic blood disorders.

The company's approach could make cell therapy more efficient and potentially less costly to manufacture compared to current ex vivo CAR-T therapies. With in vivo CAR-T, patients would not need chemotherapy preconditioning, and treatments could potentially be administered in an outpatient clinic setting rather than requiring specialized centers.

Key customers and partnerships

In March 2024, Capstan formed multiple new partnerships with investors including Forbion, Johnson & Johnson Innovation - JJDC, Mubadala Capital, Perceptive Advisors, and Sofinnova Investments. The company has also maintained ongoing partnerships with existing investors including Alexandria Venture Investments, Bristol Myers Squibb, Eli Lilly and Company, Leaps by Bayer, Novartis Venture Fund, OrbiMed, Pfizer Ventures, Polaris Partners, and Vida Ventures.

HQ location:
9880 Campus Point Drive San Diego CA USA
Founded year:
2021
Employees:
101-250
IPO status:
Private
Total funding:
USD 340.0 mn
Last Funding:
USD 175.0 mn (Series B; Mar 2024)
Last valuation:
-
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