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Extension Study to Evaluate the Long-Term Outcomes of Pediatric Patients Who Received Treatment for Retinopathy of Prematurity in the VGFTe-ROP-1920 Study (Acronym: Butterfleye Next)

An Extension Study to Evaluate the Long-Term Outcomes of Patients Who Received Treatment for Retinopathy of Prematurity in the VGFTe-ROP-1920 Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04515524
Enrollment
100
Registered
2020-08-17
Start date
2021-02-05
Completion date
2026-11-05
Last updated
2026-03-27

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

Conditions

Retinopathy of Prematurity

Brief summary

Primary objectives of the study are: * To evaluate binocular visual acuity at the end of this study in patients included from the VGFTe-ROP-1920 study, for treatment of Retinopathy of Prematurity (ROP). * To evaluate long-term safety outcomes in patients included from the VGFTe-ROP-1920 study, for treatment of ROP. Secondary objectives of the study are: * To describe visual function in patients included from the VGFTe-ROP-1920 study, for treatment of ROP. * To describe overall development in patients included from the VGFTe-ROP-1920 study, for treatment of ROP.

Interventions

OTHERNon-Interventional

No study treatment will be administered in this study

Sponsors

Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
11 Months to 5 Years
Healthy volunteers
No

Inclusion criteria

1. Patient was treated in study VGFTe-ROP-1920 2. Age \<13 months of chronological age 3. Signed informed consent from parent(s)/legal guardian(s), which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol

Exclusion criteria

1\. Patient has a condition preventing participation in the study, or performance of study procedures NOTE: Other Inclusion/

Design outcomes

Primary

MeasureTime frame
Binocular best-corrected visual acuity (BCVA)5 years of chronological age
Proportion of Patients with Adverse EventsUp to 5 years of chronological age
Proportion of Patients with Serious Adverse EventsUp to 5 years of chronological age

Secondary

MeasureTime frameDescription
Proportion of patients developing unfavorable ocular structural outcome3 years of chronological age, 5 years of chronological ageUnfavorable ocular structural outcome: retinal detachment, macular dragging, macular fold, retrolental opacity
BCVA in each eye3 year of chronological age, 5 years of chronological age
Refractive spherical equivalent in each eye3 years of chronological age, 5 years of chronological age
Neurodevelopmental outcomes using BSID-III2 years of chronological ageThe 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. This is a mandatory assessment to be performed at 2 years of age.
Neurodevelopmental outcomes using WPPSI-IV5 years of chronological ageThe Wechsler Preschool and Primary Scale of Intelligence, Fourth Edition (WPPSI-IV) 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.
Neurodevelopmental outcomes using VABS-II2 years of chronological age, 5 years of chronological ageThe Vineland Adaptive Behavior Scales, Second Edition (VABS-II) Expanded Interview will be included, which includes 4 areas: Communication, Daily Living skills, Socialization and Motor Skills. The assessments at 2 years and 5 years of age are mandatory.
Proportion of patients with recurrence of ROP3 years of chronological age, 5 years of chronological age
Proportion of patients requiring treatment for ROPThrough 5 years of chronological age

Countries

Bulgaria, Colombia, Romania, Russia, South Korea, Taiwan, Thailand, Turkey (Türkiye), United States, Vietnam

Contacts

STUDY_DIRECTORClinical Trial Management

Regeneron Pharmaceuticals

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 28, 2026