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Extension Study to Evaluate the Long-term Outcomes of Subjects in Study 20090

An Extension Study to Evaluate the Long-term Outcomes of Subjects Who Received Treatment for Retinopathy of Prematurity in Study 20090

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04015180
Acronym
FIREFLEYE next
Enrollment
100
Registered
2019-07-10
Start date
2020-03-18
Completion date
2025-09-19
Last updated
2025-10-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Retinopathy of Prematurity (ROP)

Brief summary

This is a follow-up study to evaluate the long term outcome of babies treated in the FIREFLEYE study.

Interventions

Treatment administered in 20090. Solution in a sterile glass vial, Dose A, IVT injection.

PROCEDURELaser photocoagulation

Treatment administered in 20090. Transpupillary conventional laser ablative therapy

Sponsors

Regeneron Pharmaceuticals
CollaboratorINDUSTRY
Bayer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
No minimum to 13 Months
Healthy volunteers
No

Inclusion criteria

* Subject was treated in Study 20090 * Age less than 13 months of chronological age * Signed informed consent from parent(s)/legally authorized representative(s), which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol

Exclusion criteria

\- Subject has a condition preventing participation in the study, or performance of study procedures.

Design outcomes

Primary

MeasureTime frameDescription
Binocular best-corrected visual acuity in Snellen equivalentAt 5 years of age.
Proportion of subjects with ocular AEs and SAEsUp to 5 years of age.AE: adverse event SAE: serious adverse event
Proportion of subjects with systemic AEs and SAEsUp to 5 years of age.

Secondary

MeasureTime frameDescription
Refractive spherical equivalent in each eyeAt 3 and 5 years of age
Neurodevelopmental outcomes using BSID-IIIAt 2 years of ageBSID-III: The Bayley Scales of Infant and Toddler Development, Third Edition (BSID-III) is a standard series of tests that will assess the development of children in 3 areas: cognition, language, and motor skills. It is recommended to be assessed at screening, 1 year and 2 years of age. The assessment at 2 years of age is mandatory.
Neurodevelopmental outcomes using WPPSI-IVAt 5 years of ageWPPSI-IV: The Wechsler Preschool and Primary Scale of Intelligence, Fourth Edition is designed to assess development of older children and is recommended to be performed at 3, 4 and 5 years of age. The assessment at 5 years of age is mandatory. In cases where the WPSSI-IV cannot be used, the Differential Ability Scales II (DAS-II) may be used as an alternative.
Proportion of subjects developing unfavorable ocular structural outcomeAt 1,3 and 5 years of age.Unfavorable ocular structural outcome include: retinal detachment, macular dragging, macular fold, retrolental opacity
Proportion of subjects with recurrence of ROPAt 3 and 5 years of age.
Proportion of subjects requiring treatment for ROPUp to 5 years of age.
Proportion of subjects requiring ophthalmological treatmentUp to 5 years of age.
Neurodevelopmental outcomes using VABS-IIAt 2 and 5 years of ageVABS-II: Vineland Adaptive Behavior Scales, Second Edition Expanded Interview will be included, which includes 4 areas: Communication, Daily Living skills, Socialization and Motor Skills. It is recommended to be assessed at 2, 3, 4 and 5 years of age. The assessments at 2 years and 5 years of age are mandatory.
Proportion of subjects with absence of active ROP and unfavorable structural outcomesAt 1 year of age.
Best-corrected visual acuity in each eyeAt 3 and 5 years of age.

Countries

Argentina, Belgium, Brazil, Bulgaria, Czechia, Greece, Hungary, Israel, Italy, Japan, Malaysia, Netherlands, Portugal, Romania, Russia, Singapore, Slovakia, South Korea, Spain, Sweden, Taiwan, Turkey (Türkiye), Ukraine, United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026