Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 6, 2026, 7:45 AM EDT

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Showing 1–7 of 7 matching trials from the live ClinicalTrials.gov search.
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Conditions
Dry Eye Syndrome
Interventions
RGN-259, Placebo
Drug
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
601 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Andover, Massachusetts
Conditions
Neurotrophic Keratopathy
Interventions
RGN-259, Placebo
Drug
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
11
States / cities
Lancaster, California • Colorado Springs, Colorado • Fort Collins, Colorado + 7 more
Conditions
Diabetes
Interventions
Thymosin Beta 4 (Tβ4), Placebo
Drug · Other
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
5
States / cities
Inglewood, California • Los Angeles, California • Orlando, Florida + 2 more
Conditions
Dry Eye, Sjogren's Syndrome, Graft vs. Host Disease
Interventions
Thymosin Beta 4 eye drops, Vehicle Control
Drug
Lead sponsor
Michigan Cornea Consultants, PC
Other
Eligibility
18 Years to 90 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Southfield, Michigan
Conditions
Dry Eye Syndrome
Interventions
RGN-259, Placebo
Drug
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
317 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Andover, Massachusetts
Conditions
Dry Eye Syndromes, Dry Eye
Interventions
RGN-259, Placebo
Drug
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
20
States / cities
Phoenix, Arizona • Newport Beach, California • Colorado Springs, Colorado + 16 more
Conditions
Neurotrophic Keratopathy
Interventions
RGN-259, Placebo
Drug
Lead sponsor
ReGenTree, LLC
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
29
States / cities
Laguna Hills, California • Loma Linda, California • Colorado Springs, Colorado + 25 more