Jasper Therapeutics Announces Further Expansion of Clinical Program in Chronic Spontaneous Urticaria

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Jasper Therapeutics, Inc.
Jasper Therapeutics, Inc.

REDWOOD CITY, Calif., Oct. 23, 2024 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (Nasdaq: JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting c-Kit (CD117) to address mast cell driven diseases such as chronic spontaneous urticaria (CSU), chronic inducible urticaria (CIndU) and asthma, today announced that it is commencing an open-label extension study in chronic urticarias that will roll over patients from the BEACON and SPOTLIGHT studies upon completion of their initial follow up period. Additionally, Jasper also announced it has obtained regulatory clearance in the US and in the EU to further expand the BEACON study in CSU by adding a 360mg single-dose cohort (n=4), and that enrollment in this cohort has commenced. Jasper continues to plan to report initial data from all doses of the BEACON study up through 240mg in CSU during the week of January 6th, 2025. Data from the newly added 360mg single-dose cohort is expected to be reported in the first half of 2025.

“I am very pleased with the ability of our clinical and regulatory teams to efficiently advance our clinical development plan in support of generating a robust data set in chronic urticaria,” said Ronald Martell, President and Chief Executive Officer of Jasper. “The addition of the 360mg single-dose cohort in the BEACON study in CSU will allow us to evaluate another potential loading dose leveraging the ongoing clinical trial, and the rollover extension study will allow us to gather longer-term safety and efficacy data at therapeutic doses for patients in both BEACON and SPOTLIGHT. The expanded breadth of clinical data provided in CSU and CindU should further support optimal biologic dosing in our registrational studies, planned to commence in the second half of 2025.”

About Briquilimab

Briquilimab is a targeted aglycosylated monoclonal antibody that blocks stem cell factor from binding to the cell-surface receptor c-Kit, also known as CD117, thereby inhibiting signaling through the receptor. This inhibition disrupts the critical survival signal, leading to the depletion of the mast cells via apoptosis which removes the underlying source of the inflammatory response in mast cell driven diseases such as chronic urticaria. Jasper is currently conducting clinical studies of briquilimab as a treatment in patients with CSU or with CIndU and is initiating a clinical study in patients with asthma. Briquilimab is also currently in clinical studies as a treatment for patients with LR-MDS and as a conditioning agent for cell therapies for rare diseases. To date, briquilimab has a demonstrated efficacy and safety profile in more than 160 dosed participants and healthy volunteers, with clinical outcomes in CIndU, and as a conditioning agent in severe combined immunodeficiency (SCID), acute myeloid leukemia (AML), myelodysplastic syndromes (MDS), Fanconi anemia (FA), and sickle cell disease (SCD).