Innovent released the results of two clinical studies of IBI311 (an anti-IGF-1R monoclonal antibody) in oral presentations at the Asia-Pacific Academy of Ophthalmology Congress and International Congress of Endocrinology 2024
ROCKVILLIE, Md. and
A Phase I Study of IBI311 (Anti-IGF-1R Monoclonal Antibody) in
Abstract No.: 200683
The oral presentation at the 39th APAO annual meeting was based on a single dose escalation Phase 1 clinical study (NCT05480597) to evaluate the safety and tolerability of a single intravenous infusion of IBI311 in Chinese healthy volunteers. The primary endpoint of the study was safety variables, and secondary endpoints included pharmacokinetic (PK) parameters and immunogenicity results. The results showed that IBI311 was safe and well tolerated, with the most common treatment-emergent AEs being Grade 1 or 2, transient, and most resolving without treatment. All IBI311 dose groups were tested negative for anti-drug antibodies during the study. These indicated that a single intravenous administration of IBI311 at various dose levels in healthy subjects is safe and well tolerated, and the PK profile supports dose selection for subsequent clinical development.
A Phase II Study of IBI311 for the Treatment of Thyroid Eye Disease
Abstract No.: # 792
The oral presentation at the 21st
- The primary endpoint was achieved: at Week 12, the proptosis responder rate in the study eye was significantly higher in the IBI311 group than in the placebo group (59.1% vs 18.2%, OR=11. 55, P=0. 0309).
- With continued treatment and follow-up to week 24, the IBI311 treatment group achieved up to 72.7% proptosis responder rate, 3.37 mm reduction in proptosis from baseline, 88.2% diplopia responder rate (defined as diplopia improvement ≥ grade 1).
- Safety: The overall safety profile of IBI311 was favorable, with the majority of AE being mild or moderate in severity, and no treatment-emergent AE leading to drug discontinuation/interruption in the IBI311 group.
These results suggested that IBI311 significantly improves the proptosis in patients with TED in 12 weeks of treatment, and can lead to clinical benefits such as further improvement of proptosis and improvement of diplopia after continuation of treatment, with a favorable safety profile.
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About Thyroid Eye Disease (TED)
TED, the most common orbit-related disease in adults, is an autoimmune disease involving ocular tissues and usually associated with Graves' disease (GD) and is the most common orbit-related disease in adults. TED occurs in approximately 25 to 50% of GD patients and can also be seen in other thyroid diseases, even in euthyroidism[1].
The annual incidence of TED is estimated to be 16/100,000 in women and 2.9/100,000 in men[2],and the estimated prevalence of clinically relevant TED ranges from 0.1% to 0.3%[3]. According to disease severity, it can be classified into mild, moderate and severe. Although TED appears to affect women more often, severe cases occur more frequently in men. Patients aged 30 to 50 years are most commonly affected, and severe cases occur more frequently in patients over 50 years[4]. At present, the pathogenesis of TED is not fully understood, but several studies have shown that OFs present in muscle fibers, orbital fibrous connective tissue space are key factors leading to orbital soft tissue enlargement in TED[5].
The natural history of TED is classified into active and inactive phases[6]. The most common symptoms are dry eye, ocular gritty, photophobia, lacrimation, diplopia, and pressure behind the eye, while typical signs include upper eyelid retraction, eyelid edema, periorbital and conjunctival edema, and proptosis. TED is usually mild to moderate, and about 3–5% of patients with TED are severe, manifesting as severe pain, vision-threatening corneal ulcers, or compressive optic neuropathy[7]. In addition to potentially affecting vision, TED can have an extremely severe impact on the patient's appearance and social functioning as well as quality of life.
Currently, the first-line treatment for moderately severe active TED is intravenous glucocorticoid therapy, which suffers from unsatisfactory improvement of proptosis and systemic side effects. The second-line treatment includes other immunomodulators, which also have risks related to unclear improvement of proptosis and treatment.
Teprotumumab, Tocilizumab and Rituximab are recommended by the Chinese Clinical Diagnosis and Treatment Guidelines for Thyroid Eye Disease (2022)[8], the
About IBI311
IBI311 is a recombinant anti-IGF-1R antibody developed by Innovent Biopharmaceuticals for the treatment of TED. IGF-1R, a transmembrane tyrosine kinase receptor that plays a role in development, metabolism, and immune regulation, is overexpressed in OFs, B, and T cells of TED patients[11]. IBI311 can bind IGF-1R, block IGF-1R signaling pathway activation mediated by IGF-1 and other related ligands or agonistic antibodies, thus reducing the expression of downstream inflammatory factors, inhibiting the synthesis of hyaluronic acid and other glycosaminoglycan caused by OFs activation, as well as related inflammatory reactions including tissue congestion and edema. IBI311 can inhibit adipocyte cellularization of OFs, thereby reducing the disease activity of patients with TED and improving proptosis, diplopia, ocular congestion and edema and other symptoms and signs.
About Innovent
Innovent is a leading biopharmaceutical company founded in 2011 with the mission to provide high-quality biologics that are affordable to all. The company discovers, develops, manufactures and commercializes innovative medicines that treat some of the most intractable illnesses. Its pioneering therapies to treat cancer, cardiovascular and metabolic, autoimmune and eye diseases. Innovent has 10 products in the market, 3 new drug applications under the NMPA review, 4 assets in Phase III or pivotal clinical trials and 19 more molecules in early clinical stage. Innovent partners with over 30 global healthcare leaders, including Eli Lilly, Roche, Sanofi,
Guided by the motto, "Start with Integrity, Succeed through Action," Innovent maintains the highest standard of industry practices and works collaboratively to advance the biopharmaceutical industry so that first-rate pharmaceutical drugs can become widely accessible. For more information, visit www.innoventbio.com, or follow Innovent on Facebook and LinkedIn.
Statement: Innovent does not recommend the use of any unapproved drug (s)/indication (s).
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References:
1. Li Z, Cestari D M, Fortin E. Thyroid eye disease: what is new to know? Curr Opin Ophthalmol. 2018; 29 (6): 528-534. |
2. Bartley G. The epidemiological characteristics and clinical course of ophthalmology associated with autoimmune thyroid disease in Olmsted Country, |
3. Hiromatsu Y, Eguchi H, Tani J, Kasaoka M, |
4. Edsel I. Thyroid Associated Orbitopathy. Retrieved |
5. Ali F, Chorsiya A, Anjum V, Ali A. Teprotumumab (TEPEZZA): From the Discovery and Development of Medicines to USFDA Approvals for Active Thyroid Eye Disease (TED) Treatment. Int Ophthalmol. 2021; 41 (4): 1549-1561. |
6. Dolman P J. Evaluating Graves' orbitopathy. Best Pract Res Clin Endocrinol Metab. 2012; 26 (3): 229-248. |
7. Bahn R S. Graves' ophthalmopathy. N Engl J Med. 2010; 362 (8): 726-738. |
8. Bartalena L, Kahaly GJ, Baldeschi L, et al. The 2021 |
9. |
10. Burch HB, et al. Management of Thyroid Eye Disease: a Consensus Statement by the |
11. Douglas RS, Naik V, Hwang CJ, et al. B cells from patients with Graves' disease erase express the IGF-1 receptor: implications for disease pathogenesis. J Immunol 2008; 181: 5768-5774. |
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