| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Retinopathy of prematurity (ROP) | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
| Retinopathy of prematurity (ROP) | 
 
 
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| E.1.1.2 | Therapeutic area  | Diseases [C] - Eye Diseases [C11] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 20.1 | 
 
| E.1.2 | Level  | PT | 
 
| E.1.2 | Classification code  | 10038933 | 
 
| E.1.2 | Term  | Retinopathy of prematurity | 
 
| E.1.2 | System Organ Class  | 10015919 - Eye disorders | 
 
 
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| E.1.3 | Condition being studied is a rare disease  |  Yes  | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial  | 
• To evaluate binocular visual acuity at the end of this study in patients included from the VGFTe-ROP-1920 study, for treatment of ROP. • To evaluate long-term safety outcomes in patients included from the VGFTe-ROP-1920 study, for treatment of ROP. | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
• 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. | 
 
 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
Key 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 | 
 
 
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| E.4 | Principal exclusion criteria | 
1. Patient has a condition preventing participation in the study, or performance of study  procedures | 
 
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
1. Binocular best-corrected visual acuity (BCVA) 2. Proportion of Patients with Adverse Events 3. Proportion of Patients with Serious Adverse Events | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| 1-3. 5 years of chronological age. | 
 
 
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| E.5.2 | Secondary end point(s) | 
1. Proportion of patients developing unfavorable ocular structural outcome 2. BCVA in each eye at 3 and 5 years of chronological age 3. Refractive spherical equivalent in each eye 4. Neurodevelopmental outcomes using Bayley Scales of Infant and Toddler Development (BSID-III) 5. Neurodevelopmental outcomes using echsler Preschool and Primary Scale of Intelligence, Fourth Edition (WPPSI-IV) 6. Neurodevelopmental outcomes using Vineland Adaptive Behavior Scales, Second Edition (VABS-II) 7. Proportion of patients with recurrence of ROP 8. Proportion of patients requiring treatment for ROP For full information on secondary end points, see protocol. | 
 
 
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| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
1-3, 7. 3 and 5 years of chronological age 4. 2 years of chronological age 5. 5 years of chronological age 6. 2 years of chronological age, 5 years of chronological age 8. Through 5 years of chronological age 
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| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis |  No  | 
| E.6.2 | Prophylaxis |  No  | 
| E.6.3 | Therapy |  No  | 
| E.6.4 | Safety |  Yes  | 
| E.6.5 | Efficacy |  Yes  | 
| E.6.6 | Pharmacokinetic |  No  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  No  | 
| E.6.11 | Pharmacogenomic |  No  | 
| E.6.12 | Pharmacoeconomic |  No  | 
| E.6.13 | Others |  No  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) |  No  | 
| E.7.1.1 | First administration to humans |  No  | 
| E.7.1.2 | Bioequivalence study |  No  | 
| E.7.1.3 | Other |  No  | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) |  No  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  Yes  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  No  | 
| E.8.1.1 | Randomised |  No  | 
| E.8.1.2 | Open |  Yes  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  No  | 
| E.8.1.5 | Parallel group |  No  | 
| E.8.1.6 | Cross over  |  No  | 
| E.8.1.7 | Other |  Yes  | 
| E.8.1.7.1 | Other trial design description | 
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| E.8.2 |  Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) |  No  | 
| E.8.2.2 | Placebo  |  No  | 
| E.8.2.3 | Other |  No  | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  Yes  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  No  | 
| E.8.5 | The trial involves multiple Member States |  Yes  | 
| E.8.5.1 | Number of sites anticipated in the EEA | 8 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA |  Yes  | 
| E.8.6.2 | Trial being conducted completely outside of the EEA |  No  | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned | 
| Colombia | 
 
| Korea, Republic of | 
 
| Russian Federation | 
 
| Taiwan | 
 
| Thailand | 
 
| Turkey | 
 
| United States | 
 
| Viet Nam | 
 
| Bulgaria | 
 
| Romania | 
 
 
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| E.8.7 | Trial has a data monitoring committee |  Yes  | 
| E.8.8 | 
                        Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial
                     | 
| A patient is considered to have completed the study if he/she has completed all phases of the study including the last visit at 5 years of chronological age | 
 
 
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| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 4 | 
| E.8.9.1 | In the Member State concerned months | 4 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 5 | 
| E.8.9.2 | In all countries concerned by the trial months | 6 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |