Efficacy and Safety of "Treat-and-Extend" Regimen Versus "Pro Re Nata" of Conbercept in Age-related Macular Degeneration

Summary

The study will evaluate the efficacy and safety of two different regimens of Conbercept (Treat-and-Extend (T\&E) Regimen vs. Pro Re Nata (PRN)) in patients with wet AMD. This study is to provide long-term safety data in the treatment of patients with wet Age-related Macular Degeneration (AMD).

Timeline

Start

2016-09

Primary completion

2020-09

Completion

2020-09

Outcome

Missed primary endpoint

paper T&E regimen was not non-inferior to PRN regimen [difference, -1.169 letters; 95% confidence interval (CI): -6.864 ∼ 4.526]. PMID 35795633 ↗

Publications

• Background Rush RB, Simunovic MP, Vandiver L, Aragon AV 2nd, Ysasaga JE. Treat-and-extend bevacizumab for neovascular age-related macular degeneration: the importance of baseline characteristics. Retina. 2014 May;34(5):846-52. doi: 10.1097/IAE.0000000000000033.
• Background Chen YN, Powell AM, Mao A, Sheidow TG. RETROSPECTIVE REVIEW OF LUCENTIS "TREAT AND EXTEND" PATTERNS AND OUTCOMES IN AGE-RELATED MACULAR DEGENERATION. Retina. 2016 Feb;36(2):272-8. doi: 10.1097/IAE.0000000000000691.
• Background Wykoff CC, Croft DE, Brown DM, Wang R, Payne JF, Clark L, Abdelfattah NS, Sadda SR; TREX-AMD Study Group. Prospective Trial of Treat-and-Extend versus Monthly Dosing for Neovascular Age-Related Macular Degeneration: TREX-AMD 1-Year Results. Ophthalmology. 2015 Dec;122(12):2514-22. doi: 10.1016/j.ophtha.2015.08.009. Epub 2015 Sep 29.
• Background Spaide R. Ranibizumab according to need: a treatment for age-related macular degeneration. Am J Ophthalmol. 2007 Apr;143(4):679-80. doi: 10.1016/j.ajo.2007.02.024. No abstract available.
• Background Mrejen S, Jung JJ, Chen C, Patel SN, Gallego-Pinazo R, Yannuzzi N, Xu L, Marsiglia M, Boddu S, Freund KB. Long-Term Visual Outcomes for a Treat and Extend Anti-Vascular Endothelial Growth Factor Regimen in Eyes with Neovascular Age-Related Macular Degeneration. J Clin Med. 2015 Jul 8;4(7):1380-402. doi: 10.3390/jcm4071380.
• Background Berg K, Hadzalic E, Gjertsen I, Forsaa V, Berger LH, Kinge B, Henschien H, Fossen K, Markovic S, Pedersen TR, Sandvik L, Bragadottir R. Ranibizumab or Bevacizumab for Neovascular Age-Related Macular Degeneration According to the Lucentis Compared to Avastin Study Treat-and-Extend Protocol: Two-Year Results. Ophthalmology. 2016 Jan;123(1):51-9. doi: 10.1016/j.ophtha.2015.09.018. Epub 2015 Oct 21.
• Background Oubraham H, Cohen SY, Samimi S, Marotte D, Bouzaher I, Bonicel P, Fajnkuchen F, Tadayoni R. Inject and extend dosing versus dosing as needed: a comparative retrospective study of ranibizumab in exudative age-related macular degeneration. Retina. 2011 Jan;31(1):26-30. doi: 10.1097/IAE.0b013e3181de5609.
• Background Chin-Yee D, Eck T, Fowler S, Hardi A, Apte RS. A systematic review of as needed versus treat and extend ranibizumab or bevacizumab treatment regimens for neovascular age-related macular degeneration. Br J Ophthalmol. 2016 Jul;100(7):914-917. doi: 10.1136/bjophthalmol-2015-306987. Epub 2015 Oct 29.
• Background Houston SK 3rd, Rayess N, Cohen MN, Ho AC, Regillo CD. INFLUENCE OF VITREOMACULAR INTERFACE ON ANTI-VASCULAR ENDOTHELIAL GROWTH FACTOR THERAPY USING TREAT AND EXTEND TREATMENT PROTOCOL FOR AGE-RELATED MACULAR DEGENERATION (VINTREX). Retina. 2015 Sep;35(9):1757-64. doi: 10.1097/IAE.0000000000000663.
• Background Gupta OP, Shienbaum G, Patel AH, Fecarotta C, Kaiser RS, Regillo CD. A treat and extend regimen using ranibizumab for neovascular age-related macular degeneration clinical and economic impact. Ophthalmology. 2010 Nov;117(11):2134-40. doi: 10.1016/j.ophtha.2010.02.032. Epub 2010 Jul 1.
• Background Abedi F, Wickremasinghe S, Islam AF, Inglis KM, Guymer RH. Anti-VEGF treatment in neovascular age-related macular degeneration: a treat-and-extend protocol over 2 years. Retina. 2014 Aug;34(8):1531-8. doi: 10.1097/IAE.0000000000000134.
• Background Homer N, Grewal DS, Mirza RG, Lyon AT, Gill MK. Transitioning to intravitreal aflibercept following a previous treat-and-extend dosing regimen in neovascular age-related macular degeneration: 24-month results. Eye (Lond). 2015 Sep;29(9):1152-5. doi: 10.1038/eye.2015.87. Epub 2015 May 29.
• Background Li X, Xu G, Wang Y, Xu X, Liu X, Tang S, Zhang F, Zhang J, Tang L, Wu Q, Luo D, Ke X; AURORA Study Group. Safety and efficacy of conbercept in neovascular age-related macular degeneration: results from a 12-month randomized phase 2 study: AURORA study. Ophthalmology. 2014 Sep;121(9):1740-7. doi: 10.1016/j.ophtha.2014.03.026. Epub 2014 May 1.
• Background Zhang M, Zhang J, Yan M, Luo D, Zhu W, Kaiser PK, Yu DC; KH902 Phase 1 Study Group. A phase 1 study of KH902, a vascular endothelial growth factor receptor decoy, for exudative age-related macular degeneration. Ophthalmology. 2011 Apr;118(4):672-8. doi: 10.1016/j.ophtha.2010.08.008. Epub 2010 Dec 13.
• Jia H, Lu B, Yuan Y, Yuan F, Li L, Song Y, Rong A, Zhou M, Wang F, Sun X. A Randomized, Controlled Trial of Treat-and-Extend vs. Pro Re Nata Regimen for Neovascular Age-Related Macular Degeneration. Front Med (Lausanne). 2022 Jun 20;9:852519. doi: 10.3389/fmed.2022.852519. eCollection 2022.

Drugs

Indications