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Treatment strategies for refractory diabetic macular edema: switching anti-VEGF treatments, adopting corticosteroid-based treatments, and combination therapy

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Pages 365-374 | Received 14 Oct 2015, Accepted 09 Dec 2015, Published online: 12 Jan 2016

References

  • Papers of note have been highlighted as either of interest (*) or of considerable interest (**) to readers
  • Ciulla TA, Amador AG, Zinman B. Diabetic retinopathy and diabetic macular edema: pathophysiology, screening, and novel therapies. Diabetes Care. 2003;26(9):2653–2664.
  • Klein R, Klein BE, Moss SE, et al. The Wisconsin epidemiologic study of diabetic retinopathy. XV. The long-term incidence of macular edema. Ophthalmology. 1995;102(1):7–16.
  • Ferris FL 3rd, Patz A. Macular edema. A complication of diabetic retinopathy. Surv Ophthalmol. 1984;28(Suppl):452–461.
  • Photocoagulation for diabetic macular edema. Early treatment diabetic retinopathy study report number 1. Early treatment diabetic retinopathy study research group. Arch Ophthalmol. 1985;103(12):1796–1806.
  • *Morello CM, Etiology and natural history of diabetic retinopathy: an overview. Am J Health Syst Pharm. 2007;64:S3–7.

Excellent overview of the pathophysiology of DME.

  • Boyer DS, Hopkins JJ, Sorof J, et al. Anti-vascular endothelial growth factor therapy for diabetic macular edema. Ther Adv Endocrinol Metab. 2013;4(6):151–169.
  • Diabetic Retinopathy Clinical Research N, Elman MJ, Aiello LP, et al. Randomized trial evaluating ranibizumab plus prompt or deferred laser or triamcinolone plus prompt laser for diabetic macular edema. Ophthalmology. 2010;117(6):1064–77 e35.
  • Do DV, Nguyen QD, Khwaja AA, et al. Ranibizumab for edema of the macula in diabetes study: 3-year outcomes and the need for prolonged frequent treatment. JAMA Ophthalmol. 2013;131(2):139–145.
  • Diabetic Retinopathy Clinical Research N, Elman MJ, Qin H, et al. Intravitreal ranibizumab for diabetic macular edema with prompt versus deferred laser treatment: three-year randomized trial results. Ophthalmology. 2012;119(11):2312–2318.
  • Elman MJ, Ayala A, Bressler NM, et al. Intravitreal Ranibizumab for diabetic macular edema with prompt versus deferred laser treatment: 5-year randomized trial results. Ophthalmology. 2015;122(2):375–381.
  • Nguyen QD, Shah SM, Khwaja AA, et al. Two-year outcomes of the ranibizumab for edema of the mAcula in diabetes (READ-2) study. Ophthalmology. 2010;117(11):2146–2151.
  • Michaelides M, Kaines A, Hamilton RD, et al. A prospective randomized trial of intravitreal bevacizumab or laser therapy in the management of diabetic macular edema (BOLT study) 12-month data: report 2. Ophthalmology. 2010;117(6):1078–86.
  • Rajendram R, Fraser-Bell S, Kaines A, et al. A 2-year prospective randomized controlled trial of intravitreal bevacizumab or laser therapy (BOLT) in the management of diabetic macular edema: 24-month data: report 3. Arch Ophthalmol. 2012;130(8):972–979.
  • Ciulla TA, Harris A, Latkany P, et al. Ocular perfusion abnormalities in diabetes. Acta Ophthalmol Scand. 2002;80(5):468–477.
  • Ehrlich R, Harris A, Ciulla TA, et al. Diabetic macular oedema: physical, physiological and molecular factors contribute to this pathological process. Acta Ophthalmol. 2010;88(3):279–291.
  • Miller JW, Le Couter J, Strauss EC, et al. Vascular endothelial growth factor a in intraocular vascular disease. Ophthalmology. 2013;120(1):106–114.
  • Ferrara N, Gerber HP, LeCouter J. The biology of VEGF and its receptors. Nat Med. 2003;9(6):669–676.
  • Kim I, Moon SO, Kim SH, et al. Vascular endothelial growth factor expression of intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule 1 (VCAM-1), and E-selectin through nuclear factor-kappa B activation in endothelial cells. J Biol Chem. 2001;276(10):7614–7620.
  • Zhang X, Zeng H, Bao S, et al. Diabetic macular edema: new concepts in patho-physiology and treatment. Cell Biosci. 2014;4:27.
  • Noma H, Mimura T, Yasuda K, et al. Role of inflammation in diabetic macular edema. Ophthalmologica. 2014;232:127–135.
  • Holash J, Davis S, Papadopoulos N, et al. VEGF-Trap: a VEGF blocker with potent antitumor effects. Proc Natl Acad Sci USA. 2002;99(17):11393–11398.
  • Stefanini FR, Arevalo JF, Maia M. Bevacizumab for the management of diabetic macular edema. World J Diabetes. 2013;4(2):19–26.
  • Arevalo JF, Sanches JG, Wu L, et al. Primary intravitreal bevacizumab for diffuse diabetic macular edema: the Pan-American collaborative retina study group at 24 months. Ophthalmology. 2009;116(8):488–97, 1497 e1.
  • Ferrara N, Damico L, Shams N, et al. Development of ranibizumab, an anti-vascular endothelial growth factor antigen binding fragment, as therapy for neovascular age-related macular degeneration. Retina. 2006;26(8):859–870.
  • Brown DM, Nguyen QD, Marcus DM, et al. Long-term outcomes of ranibizumab therapy for diabetic macular edema: the 36-month results from two phase III trials: RISE and RIDE. Ophthalmology. 2013;120(10):2013–2022.
  • *Nguyen QD, Brown DM, Marcus DM, et al. Ranibizumab for diabetic macular edema: results from 2 phase III randomized trials: RISE and RIDE. Ophthalmology. 2012;119(4):789–801.

Landmark study that resulted in FDA approval of ranibizumab to treat DME.

  • Bressler NM, Varma R, Suner IJ, et al. Vision-related function after ranibizumab treatment for diabetic macular edema: results from RIDE and RISE. Ophthalmology. 2014;121(12):2461–2472.
  • Mitchell P, Bandello F, Schmidt-Erfurth U, et al. The RESTORE study: ranibizumab monotherapy or combined with laser versus laser monotherapy for diabetic macular edema. Ophthalmology. 2011;118(4):615–625.
  • Brown DM, Schmidt-Erfurth U, Do DV, et al. Intravitreal aflibercept for diabetic macular edema: 100-week results from the VISTA and VIVID studies. Ophthalmology. 2015;122(10):2044–2052.
  • **Korobelnik JF, Do DV, Schmidt-Erfurth U, et al. Intravitreal aflibercept for diabetic macular edema. Ophthalmology. 2014;121(11):2247–2254.

Landmark study that resulted in FDA approval of aflibercept to treat DME.

  • Stewart MW. The clinical utility of aflibercept for diabetic macular edema. Diabetes Metab Syndr Obes. 2015;8:473–482.
  • **Diabetic Retinopathy Clinical Research N, Wells JA, Glassman AR, et al. Aflibercept, bevacizumab, or ranibizumab for diabetic macular edema. N Engl J Med. 2015;372(13):1193–1203.

The only large randomized clinical trial to directly compare bevacizumab, ranibizumab, and aflibercept in treating DME, which showed superiority of aflibercept in patients with BCVA worse than 20/40.

  • Moja L, Lucenteforte E, Kwag KH, et al. Systemic safety of bevacizumab versus ranibizumab for neovascular age-related macular degeneration. Cochrane Database Syst Rev. 2014;9:p. CD011230.
  • **Dhoot DS, Pieramici DJ, Nasir M, et al. Residual edema evaluation with ranibizumab 0.5 mg and 2.0 mg formulations for diabetic macular edema (REEF study). Eye. 2015;29(4):534–541.

Prospective study that reports efficacy of ranibizumab in treating DME refractory to bevacizumab treatment.

  • Ciulla TA, Hussain RM, Ciulla LM, et al. Ranibizumab for diabetic macular edema refractory to multiple prior treatments. Retina. 2015 Nov 18. [Epub ahead of print].
  • **Lim LS, Ng WY, Mathur R, et al. Conversion to aflibercept for diabetic macular edema unresponsive to ranibizumab or bevacizumab. Clin Ophthalmol. 2015;9:1715–1718.

Retrospective review that reports improved BCVA and macular thickness for patients who switch to aflibercept after incomplete response with bevacizumab and ranibizumab.

  • Wood EH, Karth PA, Moshfeghi DM, et al. Short-term outcomes of aflibercept therapy for diabetic macular edema in patients with incomplete response to ranibizumab and/or bevacizumab. Ophthalmic Surg Lasers Imaging Retina. 2015;46(9):950–954.
  • Cunha-Vaz J, Ashton P, Iezzi R, et al. Sustained delivery fluocinolone acetonide vitreous implants: long-term benefit in patients with chronic diabetic macular edema. Ophthalmology. 2014;121(10):1892–1903.
  • Boyer DS, Yoon YH, Belfort R Jr., et al. Three-year, randomized, sham-controlled trial of dexamethasone intravitreal implant in patients with diabetic macular edema. Ophthalmology. 2014;121(10):1904–1914.
  • Campochiaro PA, Brown DM, Pearson A, et al. Sustained delivery fluocinolone acetonide vitreous inserts provide benefit for at least 3 years in patients with diabetic macular edema. Ophthalmology. 2012;119(10):2125–2132.
  • Elman MJ, Bressler NM, Qin H, et al. Expanded 2-year follow-up of ranibizumab plus prompt or deferred laser or triamcinolone plus prompt laser for diabetic macular edema. Ophthalmology. 2011;118(4):609–614.
  • Gillies MC, Lim LL, Campain A, et al. A randomized clinical trial of intravitreal bevacizumab versus intravitreal dexamethasone for diabetic macular edema: the BEVORDEX study. Ophthalmology. 2014;121(12):2473–2481.
  • *Maturi RK, Bleau L, Saunders J, et al. A 12-month, single-masked, randomized controlled study of eyes with persistent diabetic macular Edema after multiple anti-vegf injections to assess the efficacy of the dexamethasone-delayed delivery system as an adjunct to Bevacizumab compared with continued Bevacizumab monotherapy. Retina. 2015;35(8):1604–1614.

Comparison of continued bevacizumab monotherapy vs. combination treatment with dexamethasone intravitreal implant and bevacizumab in cases of DME that did not show complete response to bevacizumab monotherapy.

  • Kowalczuk L, Touchard E, Omri S, et al. Placental growth factor contributes to micro-vascular abnormalization and blood-retinal barrier breakdown in diabetic retinopathy. PloS One. 2011;6(3):e17462.
  • Huang H, He J, Johnson D, et al. Deletion of placental growth factor prevents diabetic retinopathy and is associated with Akt activation and HIF1alpha-VEGF pathway inhibition. Diabetes. 2015;64(1):200–212.

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