Dry Eye Disease (DED)

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Dry eye disease (DED) is a multifactorial disorder of the ocular surface resulting in visual impairment, eye pain, poor corneal wound healing, and tear film instability. Normal tear film is fundamental to eye health and serves a multitude of functions that include providing a smooth corneal surface for clear vision, the ability of the eye to respond to changing environmental conditions, and suppression of inflammation and infection.

It is estimated that over 200 million people in China are impacted by DED, significantly influencing a person’s day-to-day quality of life. Despite the large prevalence and a significant disease burden, there remains large unmet need in DED as current therapies only target distinct components of the dry eye cycle, such as inflammation instead of re-establishing a healthy tear film.

Tyrvaya (varenicline), previously called OC-01, and OC-02 (simpinicline) nasal sprays contain nicotinic agonists, that bind to specific receptors in the nasal mucosa to elicit production of natural tears. Delivering Tyrvaya and OC-02 directly to the target tissue via a nasal spray is an innovative approach to the treatment of DED. The nasal spray delivery platform can provide both preservative free and preserved product formulations.

Our partner, Oyster Point Pharma, announced NDA approval of Tyrvaya Nasal Spray for the treatment of the signs and symptoms of dry eye disease in October 2021. OC-02 has been previously studied by Oyster Point Pharma in two Phase 2b clinical trials for dry eye disease. As part of the dry eye disease clinical development pathway in China, JIXING will initiate Phase 3 clinical study for Tyrvaya in 2H 2022 and Phase 1 and Phase 3 for OC-02 in 1H 2024.

For further information about our partner, Oyster Point Pharma, please visit https://oysterpointrx.com

Reference:

1 Song P, Xia W, Wang M, et al. Variations of dry eye disease prevalence by age, sex, and geographic characteristics in China: a systematic review and meta-analysis. Journal of global health (2018); 8(2):020503.

2 Liu, Ning-ning, et al. Prevalence of and Risk Factors for Dry Eye Symptom in Mainland China: A Systematic Review and Meta-Analysis. Journal of Ophthalmology (2014); 2014(3):748654–8.

3 Jie Y, Xu L, Wu YY, Jonas JB. Prevalence of dry eye among adult Chinese in the Beijing Eye Study. Eye (Lond) (2009); 23(3):688-93.

4Liu, Sun, Zhang, et al (2020). “Consensus of Chinese dry eye experts: Definition and Classification.” Chin J Ophthalmol 56(6):418-422

5Liu, Sun, Zhang, et al (2020). “Consensus of Chinese dry eye experts: treatment.” Chin J Ophthalmol 56(12):907-913

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