Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT05294666 |
Other study ID # |
99304 |
Secondary ID |
|
Status |
Completed |
Phase |
Phase 4
|
First received |
|
Last updated |
|
Start date |
April 1, 2020 |
Est. completion date |
July 1, 2021 |
Study information
Verified date |
January 2022 |
Source |
Peking University Third Hospital |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
It is planned to explore the efficacy and safety of local 0.05% cyclosporine eye drops in the
treatment of chronic graft-versus-host eye disease. Through the comparative study with 0.1%
tacrolimus eye drops, to clarify the short-term and long-term efficacy of 0.05% CSA in these
patients, and to explore the benefits of long-term maintenance of local cyclosporine to
patients.
Description:
Chronic graft-versus-host disease (GVHD) is a common and serious complication after
allogeneic hematopoietic stem cell transplantation. Its clinical presentation is similar to
that of an autoimmune disease and can affect many organs, including the skin, liver,
gastrointestinal tract, lungs and eyes. Ocular GVHD occurs in 30-60% of patients undergoing
hematopoietic stem cell transplantation and 60-90% of patients with other systemic GVHD.
Chronic ocular GVHD usually occurs 9-24 months after hematopoietic stem cell transplantation
and mainly affects the cornea, conjunctiva, lacrimal gland, eyelid and meibomian gland, and
leads to inflammation and fibrosis of these tissues. The characteristic manifestations of
chronic GVHD include dry keratoconjunctivitis, cicatric conjunctivitis, punctate keratopathy,
corneal ulcer and perforation. Severe dry eye is the most common manifestation of ocular
GVHD. Patients have burning sensation, foreign body sensation, photophobia, dry eye, itching
and other symptoms. This is associated with reduced tear secretion due to damage to the
lacrimal gland as well as with goblet cell loss and tear film instability due to meibomian
gland dysfunction. Chronic eye GVHD has the potential to cause severe visual impairment and
significantly reduce the patient's quality of life. The principle of topical treatment of
ocular GVHD is to lubricate the ocular surface, reduce ocular surface inflammation, prevent
tear evaporation, and promote epithelial repair. Specific local treatment options include
glucocorticoids, immunosuppressants, growth factors and artificial tears. Local
glucocorticoids are the first-line treatment at the present stage, but the side effects of
hormone therapy are relatively large. Long-term use can lead to damaged epithelial formation,
thinning of the cornea, increased intraocular pressure, cataract, infectious keratitis, etc.
Therefore, it is necessary to closely monitor the treatment period and minimize the use time.
At present, the most commonly used topical immunosuppressants are tacrolimus (FK506) and
cyclosporine (CsA). Both belong to calcineurin inhibitors, which can inhibit the activation
of calcium-dependent T cells, thus exerting immunosuppressive effect. 0.05% CsA is an eye
drop mainly used for the treatment of moderate and severe dry eye, with good therapeutic
effect and tolerability [18-23], but slow onset of effect. In the treatment of patients with
chronic ocular GVHD, previous studies have shown that cyclosporine eye drops can improve
patients' dry eye symptoms, reduce corneal fluorescence staining, and increase tear film
rupture time. However, the number of clinical studies on the treatment of chronic ocular GVHD
with 0.05% CsA eye drops is limited, with a small number of patients enrolled and relatively
short follow-up time. The immunosuppressive effect of tacrolimus is significantly higher than
cyclosporine, which is 100 times higher than reported in literature. Therefore, tacrolimus is
mainly used for the treatment of rejection after corneal transplantation and immune-related
ocular surface diseases. What is the efficacy and tolerability of such a powerful
immunosuppressant in treating GVHD? There are few literature reports, but long-term ocular
application can reduce local immunity and increase the risk of local infection. At the same
time, tacrolimus is very irritating, and some patients cannot tolerate it and choose to stop
using the drug. At present, there is still a lack of clinical evidence to compare the
efficacy of cyclosporine and tacrolimus eye drops in patients with chronic ocular GVHD.
Therefore, by comparing the effectiveness, safety and tolerance of 0.05% CsA eye drops and
0.1% tacrolimus eye drops in the treatment of chronic eye graft-versus host eye disease, this
study aims to explore a reasonable treatment plan for chronic eye GVHD and provide
theoretical basis for clinical application.