A Phase 1/2 Dose Escalation Study of Subretinally Injected ATSN-101 Administered in Patients With Leber Congenital Amaurosis Caused by Biallelic Mutations in GUCY2D
Sponsor study identifier
Secondary identifiers
OTHER · UTN
interventional
15
1 country
2
Study Start
October 22, 2019
Actual (reported)Primary Completion
May 19, 2023
Actual (reported)Study Completion
May 19, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Primary Objective: To evaluate the safety and tolerability of ascending doses of ATSN-101 administered as a unilateral subretinal injection in patients with Leber Congenital Amaurosis (LCA) caused by autosomal recessive guanylate cyclase 2D (GUCY2D) mutations (GUCY2D-LCA). Secondary Objective: To evaluate the efficacy of ascending doses of ATSN-101 administered as a unilateral subretinal injection in patients with GUCY2D-LCA.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
May 19, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
April 10, 2019
Actual (reported)April 18, 2019
Actual (reported)October 22, 2019
Actual (reported)May 19, 2023
Actual (reported)August 3, 2026
Actual (reported)May 19, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Number of Participants With Adverse Events (AEs) From Baseline up to the End of the Observation Period
Number of participants with treatment-emergent AEs will be summarized in each cohort (this includes cohorts 1 - 5)
From Baseline to Week 52
Change From Baseline of Best-Corrected Visual Acuity (BCVA) Between the Treated and Untreated Eyes
Baseline to Week 52
Change From Baseline of Sensitivity Between the Treated and Untreated Eye - Light Adapted
Baseline to Week 52
Mean Change From Baseline of Sensitivity Between the Treated and Untreated Eye - Dark Adapted
Baseline to Week 52
Number of Participants With Adverse Events (AEs) From Baseline up to the End of the Observation Period
From Baseline to Week 260
Change From Baseline of Best-Corrected Visual Acuity (BCVA) Between the Treated and Untreated Eyes
Baseline to Week 260
ATSN-101 single dose according to an ascending dose design (dose escalation phase) or ATSN-101 single dose (dose expansion phase)
Pharmaceutical form:Solution for intraocular administration Route of administration: Subretinal injection
Pharmaceutical form:Solution for parenteral use Route of administration: Subretinal injection
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Grouped treatment entry
Trimethoprim/polymyxin B
The registry names several treatments. This does not confirm that participants received them together or that they form a single product.
View registry recordCasey Eye Institute - Oregon Health & Science University
Portland, Oregon, 97239, United States
Scheie Eye Institute, University of Pennsylvania
Philadelphia, Pennsylvania, 19104, United States
15 participants (actual enrollment reported by the registry).
First Submitted
April 10, 2019
First Posted
April 18, 2019
Study Start
October 22, 2019
Actual (reported)Pharmaceutical form:Tablet Route of administration: Oral
Pharmaceutical form:Suspension Route of administration: Peri-ocular injection
Contact the study team to confirm eligibility.
Primary Completion
May 19, 2023
Actual (reported)Study Completion
May 19, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
August 3, 2026
Results First Posted
August 3, 2026
Record last verified: 2026-07
Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://www.clinicalstudydatarequest.com/
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
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