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. 2024 Mar 14;12(3):649. doi: 10.3390/biomedicines12030649

Table 2.

Clinical trials with corneal scarring treated by cell-based and cell-free approaches.

ClinicalTrial.gov ID
Year Initiated
Title Target Disease, Treatment Sponsor Status Publications
NCT01562002
2012
Safety Study of Stem Cell Transplant to Treat Limbus Insufficiency Syndrome
Phase I/II, double masked
LSCD Institute of Applied Ophthalmobio-logy, Spain Completed recruitment;
N = 17 patients;

No adverse effects. Improved CEpi healing
[193]
Allogenic bone marrow MSCs

Stem cells with amniotic membrane transplant
NCT02291770
2015
Mesenchymal stromal cells treatment attenuates dry eye in patients with chronic graft-versus-host disease GVHD-DED Guangdong Provincial People’s Hospital, China No adverse effects.

In total, 12 out of 22 patients had improved dry eye score, ocular surface disease index scores, and Schirmer test results
[194,195]
Allogenic bone marrow MSCs

Intravenous injection
Phase III, multi-center, randomized,
Open-label
NCT02592330
2015
Limbal Stem Cell Deficiency (LSCD) Treatment With Cultivated Stem Cell (CALEC) Graft LSCD Massachusetts Eye and Ear Infirmary, USA Completed recruitment
Cultivated autologous limbal epithelial cell graft
Phase I/II, open-label CALEC Transplant
NCT03687632
2018
ST266 Eye Drops for the Treatment of Persistent Corneal Epithelial Defects

Phase II, multi-center, open-label
PED Noveome Biotherapeutics No adverse effects.
A total of 10 out of 12 eyes had reduced PED area
[196]
Multi-cytokine biologic solution from Amnion-derived Multipotent Progenitor culture

Eye drops
NCT03878628
2019
Treatment With Allogeneic Adipose-derived MSC in Patients With Aqueous Deficient Dry Eye Disease (MESADDE) DED
Kerato-Conjunctivitis Sicca
Aqueous Tear Deficiency
Rigshospitalet, Denmark No adverse effects.
Decreased mean OSDI score, tear osmolarity; increased TBUT, Schirmer’s I test
[197]
Allogeneic adipose-derived MSC
Early Phase I, open-label Transconjunctival injection
NCT04213248
2019
Effect of UMSCs Derived Exosomes on Dry Eye in Patients With cGVHD
Phase I/II, open-label
Dry Eye Zhongshan Ophthalmic Center, Sun Yat-sen University, China Recruiting
No adverse effects;
reduced fluorescein scores, longer tear-film breakup time; increased tear secretion; and lower OSDI scores
[198]
Umbilical MSC-derived exosomes
Eye drops
NCT04932629
2021
To Evaluate the Clinical Safety and Efficacy of Limbal Stem Cell for Treatment of Superficial Corneal Pathologies Corneal scar and opacities L.V. Prasad Eye Institute, India
Ex vivo cultivated allogeneic limbal stromal stem cells
Early phase I open-label Topical with fibrin glue
NCT05279157
2022
Autologous Adipose-Derived Adult Stem Cell Implantation for Corneal Diseases (ADASCs-CT-CD)
Phase II
Corneal dystrophy, keratoconus Vissum, Instituto Oftalmológico de Alicante, Spain Completed
No adverse effects;
improved stromal cell density, modulated scarring, visual improvement (~2 lines gain)
[81,90,199]
Autologous adipose MSCs
Corneal implantation
NCT06257355
2024
Study to Evaluate the Safety and Efficacy of CSB-001 Ophthalmic Solution 0.1% in Subjects With Corneal Scars Corneal scar Claris Biotherapeutics, Inc. Recruiting
Human recombinant dHGF (hepatocyte growth factor)

Eye drops
Phase I Open-label

Note: LSCD—limbal stem cell deficiency; GVHD-DED—graft-versus-host disease–dry eye disorders; MSC—mesenchymal stem cells; TBUT—tear breakup time; OSDI—ocular surface disease index; PED—persistent epithelial defect.