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A new study suggests that a treatment using the CRISPR genome editing technology alleviates swelling and reduces the frequency of attacks in hereditary angioedema patients.Hereditary angioedema (HAE) is a rare, genetic disorder characterized by severe, recurring, and unpredictable swelling attacks in various body organs and tissues, which can be painful, debilitating, and life-threatening.The findings were presented at this year's American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting in Louisville, KY."NTLA-2002 is a one-time, systemically administered CRISPR genome editing candidate being developed for HAE," says clinical immunologist Hilary Longhurst, MD, PhD, lead author of the study. "It is designed to knock out the KLKB1 gene in liver cells, thereby reducing the production of a specific protein called kallikrein whose uncontrolled activity is responsible for the recurring, debilitating and potentially fatal swelling attacks that occur in people living with HAE."The interim clinical data from the Phase 1, first-in-human study of NTLA-2002 is being presented at the ACAAI meeting this year, specifically for the patients with HAE (both males and females) treated to date at ascending doses of 25 mg, 50 mg and 75 mg."While the data is still emerging, all patients treated with a single dose of NTLA-2002 in the 25 and 75 mg dose cohorts had rapid and significant reductions in plasma kallikrein levels," says Danny Cohn, MD, senior author of the study. "For the three patients in the 25mg dose cohort who reached a pre-determined time point where their HAE attacks were assessed, all patients had a significant reduction in HAE attacks as well."At both the 25 and 75mg dose levels, NTLA-2002 was generally well tolerated, and most adverse events were mild in severity. The most frequent adverse events were infusion-related reactions, which were mostly Grade 1 and resolved within one day. There have been no dose-limiting toxicities, no serious adverse events and no adverse events of Grade 3 or higher observed to date."These early data support NTLA-2002 as a potential one-time treatment to cure the symptoms of HAE," says Dr. Longhurst. "Clinical development will continue for this program with the randomized, Phase 2 portion of the clinical trial to begin in the first half of 2023."( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Technology :Swelling in hereditary angioedema patients can be slowed with CRISPR treatment

A new study suggests that a treatment using the CRISPR genome editing technology alleviates swelling and reduces the frequency ... ...