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Effect of UMSCs Derived Exosomes on Dry Eye in Patients With cGVHD

Dry Eye Clinical Trial

Official title:
Effect of Umbilical Mesenchymal Stem Cells Derived Exosomes on Dry Eye in Patients With Chronic Graft Versus Host Diseases

Clinical Trial Summary

The purpose of this study is to determine whether Umbilical Mesenchymal Stem Cells (UMSCs) derived Exosomes could alleviate dry eye symptoms in patients with chronic Graft Versus Host Diseases (cGVHD).

Clinical Trial Description

Among patients with cGVHD, 60% - 90% are affected by dry eye symptoms, presenting as progressive development of dryness, foreign body sensation, photophobia, pain and even blindness, which seriously affect their life quality. At present, the standard first-line treatment of cGVHD is still hormone or combined with immunosuppressant of cyclosporine. The dry eyes related to cGVHD are treated with artificial tears, lacrimal punctum embolization, local immunosuppressant or even blepharoplasty to reduce dry eye symptoms. Although a variety of new immunosuppressants and monoclonal antibodies have been used in clinic, the overall efficacy is still unsatisfactory with apparent side effects, and the period of treatment is long with high-costs. Therefore, it is an urgent task for clinicians to explore new methods of cGVHD related dry eye therapy and improve the survival rate and quality of life of patients. Exosomes are a kind of membrane vesicles secreted by parental cells, which can mediate the transfer of RNA, protein, DNA and other functional molecules between cells and regulate the function of target cells. The therapeutic potential of UMSC exosomes has been widely studied in diseases of liver, kidney, skin and so on. Previously, we found that UMSC exosomes can significantly alleviate the symptoms of dry eye in the dry eye animal model. At present, we plan to clarify its efficacy in clinical research. The main objective of this study is to assess the alleviation of dry eye symptoms in patients with cGVHD after UMSC-exo treatment by measuring Ocular Surface Index Score (OSDI), and the second objective include the measurement of tear secretion amount, tear break time, the areas stained by fluorescent, ocular redness, tear meniscus and best corrected visual acuity. Approximately 27 study subjects will be recruited. The treatment group will receive artificial tears for 2 weeks to normalize the baseline, followed by intervention of UMSC-exo 10ug/drop, four times a day for 14 days. The follow-up visit will be 12-week, progression of dry eye will be measured. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04213248
Study type Interventional
Source Zhongshan Ophthalmic Center, Sun Yat-sen University
Contact Tian Zhou
Phone (020)66615460
Email zhoutian@gzzoc.com
Status Recruiting
Phase Phase 1/Phase 2
Start date February 21, 2020
Completion date December 2023
View Details
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