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  • Sebetralstat, wonder...

Sebetralstat, wonder drug for Hereditary Angioedema Attacks, claims study

Dr Manoj Kumar NayakWritten by Dr Manoj Kumar Nayak Published On 2024-08-05T20:45:19+05:30  |  Updated On 6 Aug 2024 10:40 AM IST
Sebetralstat, wonder drug for Hereditary Angioedema Attacks, claims study
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Sebetralstat- a wonder drug for Hereditary Angioedema Attacks

Hereditary angioedema (HAE) is a rare disease characterized by recurrent swelling of eyes, lips and other soft tissues and can be associated with life threatening respiratory distress due to laryngeal edema. All approved on-demand treatments for acute attacks of hereditary angioedema are administered parenterally, a route of administration that is associated with delays in treatment or withholding of therapy. Recently a phase 3 study of an oral drug sebetralstat for control of acute attacks of HAE was published in the New England Journal of Medicine.

This was a phase 3, double-blind, three-way crossover trial, where participants ≥ 12 years of age with type 1 or type 2 hereditary angioedema were randomly assigned to take up to two oral doses of sebetralstat (300 mg or 600 mg) or placebo for an angioedema attack. The primary end point, assessed in a time-to-event analysis, was the beginning of symptom relief, defined as a rating of “a little better” on the Patient Global Impression of Change scale (ratings range from “much worse” to “much better”) at two or more consecutive time points within 12 hours after the first administration of the trial agent. Key secondary end points, assessed in a time-to-event analysis, were a reduction in attack severity (an improved rating on the Patient Global Impression of Severity [PGI-S] scale, with ratings ranging from “none” to “very severe”) at two or more consecutive time points within 12 hours and complete attack resolution (a rating of “none” on the PGI-S scale) within 24 hours.

A total of 136 participants were assigned to one of six trial sequences, with 110 treating 264 attacks. The time to the beginning of symptom relief with the 300-mg dose and the 600-mg dose was faster than with placebo (P<0.001 and P=0.001 for the two comparisons, respectively), with median times of 1.61 hours (interquartile range, 0.78 to 7.04), 1.79 hours (1.02 to 3.79), and 6.72 hours (1.34 to >12), respectively. The time to reduction in the attack severity with the 300-mg dose and the 600-mg dose was faster than with placebo (P=0.004 and P=0.003), with median times of 9.27 hours (interquartile range, 1.53 to >12), 7.75 hours (2.19 to >12), and more than 12 hours (6.23 to >12). The time to complete resolution was faster with the 300-mg and 600-mg doses than with placebo (P=0.002 and P<0.001). The percentage of attacks with complete resolution within 24 hours was 42.5% with the 300-mg dose, 49.5% with the 600-mg dose, and 27.4% with placebo. Sebetralstat and placebo had similar safety profiles; no serious adverse events related to the trial agents were reported.

Sebetralstat provided faster times to the beginning of symptom relief, reduction in attack severity, and complete attack resolution than placebo in HAE. In conclusion sebetralstat could be the first oral drug to be useful in the treatment of acute attacks of HAE.

Reference- Riedl MA, Farkas H, Aygören-Pürsün E, Psarros F, Soteres DF, Staevska M, Cancian M, Hagin D, Honda D, Melamed I, Savic S, Stobiecki M, Busse PJ, Dias de Castro E, Agmon-Levin N, Gower R, Kessel A, Kurowski M, Lleonart R, Grivcheva Panovska V, Wedner HJ, Audhya PK, Hao J, Iverson M, Smith MD, Yea CM, Lumry WR, Zanichelli A, Bernstein JA, Maurer M, Cohn DM; KONFIDENT Investigators. Oral Sebetralstat for On-Demand Treatment of Hereditary Angioedema Attacks. N Engl J Med. 2024 Jul 4;391(1):32-43.

Sebetralstathereditary angioedemaNEJM
Source : New England Journal of Medicine
Dr Manoj Kumar Nayak
Dr Manoj Kumar Nayak

    MBBS

    Dr Manoj Kumar Nayak has completed his M.B.B.S. from the prestigious institute Bangalore medical college and research institute, Bengaluru. He completed his M.D. Dermatology from AIIMS Rishikesh. He is actively involved in the field of dermatology with special interests in vitiligo, immunobullous disorders, psoriasis and procedural dermatology. His continued interest in academics and recent developments serves as an inspiration to work with medical dialogues.He can be contacted at editorial@medicaldialogues.in.

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