Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 6, 2026, 9:57 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–6 of 6 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
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 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