SAN DIEGO, March 12, 2024 /PRNewswire/ — Longbio Pharma (Suzhou) Co., Ltd. (referred to as "Longbio Pharma"), a leading biotech company dedicated to developing innovative protein treatments for allergy, respiratory, dermatology, hematology, ophthalmology, and other autoimmune and rare diseases, proudly announced the Phase I data of LP-003 (new generation of anti-IgE antibody) at the 2024 American Academy of Dermatology Association annual meeting (2024AAD).
The presentation of the poster titled "A Phase 1 study in healthy subjects of LP-003, a novel long-acting, high affinity anti-IgE antibody" by Longbio Pharma marked a significant moment during the conference.
Title: A Phase 1 study in healthy subjects of LP-003, a novel long-acting, high affinity anti-IgE antibodyAbstract Submission ID: 50484Presentation Time: Mar 8-12, 2024Location: Poster Exhibits CenterResults:In a randomized, double-blind, single-ascending-dose Phase I clinical study (CTR20221413), 32 healthy subjects were randomly divided into 5 groups to receive a single intravenous dose of 0.3 mg/kg, 1 mg/kg, 3 mg/kg, 6 mg/kg and 10 mg/kg respectively. Safety, pharmacokinetics, and pharmacodynamics (free IgE levels) profile was evaluated.
LP-003 exhibited a non-linear PK characteristic with T1/2 ranging from 44.6 days to 76.5 days, which is approximately 2～3 fold of Omalizumab. Moreover, the free-IgE was suppressed to below detection range for more than 168 days at 1 mg/kg group (except one with high baseline IgE level) to 10 mg/kg group.
LP-003 appears to show good safety profile. No Grade 3 and above TEAE was reported, establishing a solid foundation for further investigation and advancement.
Chronic spontaneous urticaria (CSU) stands as a prevalent skin disorder affecting approximately 1–2% of the global population. Despite SoC treatment, the efficacy and duration of relief remain significant challenges for patients and healthcare providers alike. Anti-IgE therapy was approved as a second-line treatment, however, only approximately 40% of patients achieving complete response following 300 mg Omalizumab dosing. Thus, a novel anti-IgE treatments offering higher efficacy and prolonged relief is needed.
The successful Phase II study of Ligelizumab points a way that anti-IgE antibody with higher IgE affinity and more potent efficacy (FcεRI inhibition) retains the potential to be superior against Omalizumab.
In this study, Longbio Pharma developed a new generation of anti-IgE antibody, LP-003, of higher IgE binding affinity, stronger FcεRI inhibition bioactivity, compared to Omalizumab and even Ligelizumab. Meanwhile, LP-003 has a much longer half-life (approximately 45∽76 days) compared to Omalizumab (approximately 17∽20 days).
Moreover, a Phase II clinical trial (NCT06228560) of total 200 adult refractory CSU patients, despite up-dosing anti-histamine (H1) treatment, are being enrolled into 5 distinct groups (n=40/group), including three LP-003 treatment groups, one omalizumab treatment group, to provide a head-to-head comparison, and one placebo group. The topline results are expected to be released in early 2025.
About LP-003LP-003, a novel monoclonal anti-IgE antibody was generated, humanized, and engineered by Dr. Sun, Nai-chau, who is the inventor of Omalizumab, and co-founder of Tanox. Based on the 30+ years R&D experience on IgE target, Dr Sun developed a new generation of anti-IgE antibody (LP-003). Its extensive characterization including: affinity, bioactivity (FcεRI and FcεRII/CD23 inhibition), off-target binding and animal study (Tox and efficacy) was conducted. LP-003 just accomplished its Phase II study of allergic rhinitis. The current data shows LP-003 has the potential to become a best-in-class treatment.
About Longbio PharmaLongBio Pharma is a biotech company located in Shanghai/Changshu, China. The company, which was founded in 2018, focuses on autoimmune and complement diseases, serving patients and society.
For more information, please visit: www.longbio.com or please contact: bd@longbio.com.
This content was prepared by our news partner, Cision PR Newswire. The opinions and the content published on this page are the author’s own and do not necessarily reflect the views of Siam News Network
