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Jasper Therapeutics (JSPR) investor relations material
Jasper Therapeutics Cantor Global Healthcare Conference 2025 summary
Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
Company overview and lead asset
Clinical-stage biotech focused on monoclonal antibody briquelimab (BRIC), targeting KIT on mast cells for urticaria treatment.
Briquelimab was originally developed by Amgen for pulmonary fibrosis but repurposed for urticaria due to mast cell involvement.
Mast cells are central to urticaria pathology; targeting KIT induces mast cell apoptosis, providing extended clinical benefit.
Competitive landscape and mechanism of action
Only anti-KIT antibodies like briquelimab deplete mast cells; small molecule inhibitors only suppress activity, not cell numbers.
Small molecule KIT inhibitors have not demonstrated mast cell depletion, with symptoms returning as drug levels fall.
Achieving sufficient intracellular concentration for depletion with small molecules remains a challenge.
Clinical trial design and dosing insights
BEACON study explores multiple dosing regimens; optimal appears to be 180 mg every 8 weeks, yielding rapid and sustained symptom relief.
120 mg dose effective but requires more frequent dosing; higher doses (240 mg, 360 mg) do not show added benefit and may increase adverse events.
Open label extension (OLE) allows patients to re-enter after disease recurrence, providing long-term efficacy and safety data.
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