NCT02299336

Brief Summary

The Endurance Trial is a phase IV open label clinical study to assess the need for ongoing intravitreal aflibercept injections after the 3-year VISTA DME (VGFT-OD-1009; NCT01363440) end-point. Subjects will be treated with intravitreal aflibercept injections pro re nata (PRN) based on the presence of CR-DME (Clinically Relevant-DME). In addition, subjects who meet re-treatment criteria will be eligible for focal laser treatment every 90 days.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for phase_4

Timeline
Completed

Started Nov 2014

Typical duration for phase_4

Geographic Reach
1 country

3 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 15, 2014

Completed
1 month until next milestone

First Posted

Study publicly available on registry

November 24, 2014

Completed
Same day until next milestone

Study Start

First participant enrolled

November 24, 2014

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 9, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 9, 2017

Completed
1.4 years until next milestone

Results Posted

Study results publicly available

June 7, 2018

Completed
Last Updated

June 4, 2019

Status Verified

May 1, 2019

Enrollment Period

2.1 years

First QC Date

October 15, 2014

Results QC Date

January 9, 2018

Last Update Submit

May 15, 2019

Conditions

Outcome Measures

Primary Outcomes (1)

  • Mean Number of Intravitreal Aflibercept Injections for Subjects Who Were Enrolled and Completed the 3-year VISTA DME (VGFT-OD-1009) Trial

    Measured by evaluating mean number of injections required for subjects who were enrolled and completed the 3-year VISTA DME (VGFT-OD-1009) trial

    Week 104

Secondary Outcomes (12)

  • Mean Change in Early Treatment Diabetic Retinopathy Study Best-corrected Visual Acuity From Baseline to Week 52 and Baseline to Week 104

    Week 52, Week 104

  • Mean Number of Intravitreal Aflibercept Injections Before and After Receiving First Focal Laser Application.

    Before First Focal Laser Treatment (FLT) at Week 12 or later; After First FLT at up to 104 weeks

  • Percentage of Subjects With Gain or Loss of 0 to 5 Early Treatment Diabetic Retinopathy Study Best-corrected Visual Acuity Letters From Baseline to Week 52 and Baseline to Week 104

    Week 52, Week 104

  • Mean Change in Central Retinal Thickness From Baseline to Week 52 and Baseline to Week 104.

    Week 52, Week 104

  • Number of Subjects With no Clinically-relevant Diabetic Macular Edema (as Defined in the Protocol) on Spectral Domain Optical Coherence Tomography From Baseline to Week 52 and Baseline to Week 104.

    Week 52, Week 104

  • +7 more secondary outcomes

Study Arms (1)

PRN (pro re nata)

OTHER

2 mg intravitreal aflibercept (Eylea) PRN, focal laser administered based on pre-specified criteria, 104 weeks

Drug: AfliberceptProcedure: Focal Laser

Interventions

pro re nata (PRN)

Also known as: Eylea
PRN (pro re nata)
Focal LaserPROCEDURE

Focal laser administered based on pre-specified criteria

PRN (pro re nata)

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Enrolled and Completed VISTA DME (VGFT-OD-1009) clinical trial
  • Willing and able to comply with clinic visits and study-related procedures
  • Provide signed informed consent
  • Enrollment in the trial within 12 weeks of trial activation.

You may not qualify if:

  • A subject who meets any of the following criteria will be excluded from the study:
  • Prior treatment with anti-VEGF therapy in the study eye within 28 days of baseline
  • Pregnant or breast-feeding women
  • Sexually active men\* or women of childbearing potential\*\* who are unwilling to practice adequate contraception during the study (adequate contraceptive measures include stable use of oral contraceptives or other prescription pharmaceutical contraceptives for 2 or more menstrual cycles prior to screening; intrauterine device \[IUD\]; bilateral tubal ligation; vasectomy; condom plus contraceptive sponge, foam, or jelly, or diaphragm plus contraceptive sponge, foam, or jelly).
  • Contraception is not required for men with documented vasectomy. \*\*Postmenopausal women must be amenorrheic for at least 12 months in order not to be considered of child bearing potential. Pregnancy testing and contraception are not required for women with documented hysterectomy or tubal ligation.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Retina Consultants of Houston/The Medical Center

Houston, Texas, 77030, United States

Location

Retina Consultants of Houston/Katy office

Katy, Texas, 77494, United States

Location

Retina Consultants of Houston

The Woodlands, Texas, 77384, United States

Location

Related Publications (14)

  • Arevalo JF, Sanchez JG, Wu L, Maia M, Alezzandrini AA, Brito M, Bonafonte S, Lujan S, Diaz-Llopis M, Restrepo N, Rodriguez FJ, Udaondo-Mirete P; Pan-American Collaborative Retina Study Group. Primary intravitreal bevacizumab for diffuse diabetic macular edema: the Pan-American Collaborative Retina Study Group at 24 months. Ophthalmology. 2009 Aug;116(8):1488-97, 1497.e1. doi: 10.1016/j.ophtha.2009.03.016. Epub 2009 Jul 9.

    PMID: 19545900BACKGROUND
  • Bhagat N, Grigorian RA, Tutela A, Zarbin MA. Diabetic macular edema: pathogenesis and treatment. Surv Ophthalmol. 2009 Jan-Feb;54(1):1-32. doi: 10.1016/j.survophthal.2008.10.001.

    PMID: 19171208BACKGROUND
  • Ferrara N, Davis-Smyth T. The biology of vascular endothelial growth factor. Endocr Rev. 1997 Feb;18(1):4-25. doi: 10.1210/edrv.18.1.0287. No abstract available.

    PMID: 9034784BACKGROUND
  • Ferrara N. VEGF: an update on biological and therapeutic aspects. Curr Opin Biotechnol. 2000 Dec;11(6):617-24. doi: 10.1016/s0958-1669(00)00153-1.

    PMID: 11102799BACKGROUND
  • Grover D, Li TJ, Chong CC. Intravitreal steroids for macular edema in diabetes. Cochrane Database Syst Rev. 2008 Jan 23;(1):CD005656. doi: 10.1002/14651858.CD005656.pub2.

    PMID: 18254088BACKGROUND
  • Klein R, Klein BE, Moss SE, Davis MD, DeMets DL. The Wisconsin epidemiologic study of diabetic retinopathy. IV. Diabetic macular edema. Ophthalmology. 1984 Dec;91(12):1464-74. doi: 10.1016/s0161-6420(84)34102-1.

    PMID: 6521986BACKGROUND
  • Moss SE, Klein R, Klein BE. Ten-year incidence of visual loss in a diabetic population. Ophthalmology. 1994 Jun;101(6):1061-70. doi: 10.1016/s0161-6420(94)31217-6.

    PMID: 8008348BACKGROUND
  • Moss SE, Klein R, Klein BE. The 14-year incidence of visual loss in a diabetic population. Ophthalmology. 1998 Jun;105(6):998-1003. doi: 10.1016/S0161-6420(98)96025-0.

    PMID: 9627648BACKGROUND
  • Nguyen QD, Tatlipinar S, Shah SM, Haller JA, Quinlan E, Sung J, Zimmer-Galler I, Do DV, Campochiaro PA. Vascular endothelial growth factor is a critical stimulus for diabetic macular edema. Am J Ophthalmol. 2006 Dec;142(6):961-9. doi: 10.1016/j.ajo.2006.06.068. Epub 2006 Aug 2.

    PMID: 17046701BACKGROUND
  • Saaddine JB, Honeycutt AA, Narayan KM, Zhang X, Klein R, Boyle JP. Projection of diabetic retinopathy and other major eye diseases among people with diabetes mellitus: United States, 2005-2050. Arch Ophthalmol. 2008 Dec;126(12):1740-7. doi: 10.1001/archopht.126.12.1740.

    PMID: 19064858BACKGROUND
  • Photocoagulation for diabetic macular edema. Early Treatment Diabetic Retinopathy Study report number 1. Early Treatment Diabetic Retinopathy Study research group. Arch Ophthalmol. 1985 Dec;103(12):1796-806.

    PMID: 2866759BACKGROUND
  • Diabetic Retinopathy Clinical Research Network; Elman MJ, Aiello LP, Beck RW, Bressler NM, Bressler SB, Edwards AR, Ferris FL 3rd, Friedman SM, Glassman AR, Miller KM, Scott IU, Stockdale CR, Sun JK. Randomized trial evaluating ranibizumab plus prompt or deferred laser or triamcinolone plus prompt laser for diabetic macular edema. Ophthalmology. 2010 Jun;117(6):1064-1077.e35. doi: 10.1016/j.ophtha.2010.02.031. Epub 2010 Apr 28.

    PMID: 20427088BACKGROUND
  • Zhang X, Saaddine JB, Chou CF, Cotch MF, Cheng YJ, Geiss LS, Gregg EW, Albright AL, Klein BE, Klein R. Prevalence of diabetic retinopathy in the United States, 2005-2008. JAMA. 2010 Aug 11;304(6):649-56. doi: 10.1001/jama.2010.1111.

    PMID: 20699456BACKGROUND
  • Wykoff CC, Ou WC, Khurana RN, Brown DM, Lloyd Clark W, Boyer DS; ENDURANCE Study Group. Long-term outcomes with as-needed aflibercept in diabetic macular oedema: 2-year outcomes of the ENDURANCE extension study. Br J Ophthalmol. 2018 May;102(5):631-636. doi: 10.1136/bjophthalmol-2017-310941. Epub 2017 Aug 16.

MeSH Terms

Interventions

aflibercept

Limitations and Caveats

Limitations of the ENDURANCE study include the small population and employment of aflibercept re-treatment criteria that allowed physicians to use their varying clinical judgement in determining anti-VEGF re-treatment instead of a strict protocol.

Results Point of Contact

Title
Dr. Charles C. Wykoff
Organization
Retina Consultants of Houston

Study Officials

  • Charles C Wykoff, MD

    Greater Houston Retina Research

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
phase 4
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

October 15, 2014

First Posted

November 24, 2014

Study Start

November 24, 2014

Primary Completion

January 9, 2017

Study Completion

January 9, 2017

Last Updated

June 4, 2019

Results First Posted

June 7, 2018

Record last verified: 2019-05

Locations