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OCT angiography biomarkers in type 1 choroidal neovascularisation after one year of aflibercept treatment
Biomarcadores de OCT-angiografía en la neovascularización coroidea tipo 1 tras tratamiento con aflibercept durante 1 año
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R. Campos Poloa,c,
Corresponding author
rafacampospolo@hotmail.com

Corresponding author.
, I. Gómez Sánchezb,c
a Unidad de Retina, Hospital Virgen del Puerto, Plasencia, Cáceres, Spain
b Hospital Perpetuo Socorro, Badajoz, Spain
c Hospital Doutor José María Grande, ULSNA, Portalegre, Portugal
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Received 03 January 2021. Accepted 04 February 2021
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Abstract
Objective

To assess the activity of biomarkers, through OCT angiography (OCTA), of choroidal neovascularisation (CNV) secondary to age-related macular degeneration (AMD) treated with aflibercept. As secondary endpoints, visual acuity (VA) and the relationship between biomarkers and visual prognosis were also studied.

Material and methods

Prospective study that examined 33 eyes of 40 naïve patients with type 1 CNV secondary to AMD, who had been treated with aflibercept, according to summary of product characteristics, for one year. The patients were evaluated at the time of diagnosis, and at 4, 8 and 12 months.

Results

The mean VA gain at 12 months was 15.2 ± 3.3 letters. The area of lesion decreased 1.2 ± 1.0 mm2 in the 4th month (P < .0001), remaining stable afterwards. The presence of tiny capillaries, anastomosis and perilesional hypointense halo was reduced by 85%, 70% and 25%, respectively, at 12 months of follow-up. The peripheral vascular arcade changed morphology, from having a leafy appearance to having a sharp appearance in 90% of cases. The size of the lesion and the presence/absence of perilesional hypointense halo were independently associated with the final VA, in such a way that larger lesions and the absence of a perilesional hypointense halo at the baseline visit were associated with less VA gain.

Conclusions

The OCTA is a useful, non-invasive tool that provides quantitative and qualitative information on the remodelling of the CNV vascular network after antiangiogenic therapy.

Keywords:
Age-related macular degeneration
Choroidal neovascularisation
OCT angiography
anti-VEGF
Aflibercept
Resumen
Objetivos

Evaluar la actividad de los biomarcadores, mediante OCT-angiografía (OCTA), en la neovascularización coroidea (NVC) secundaria a degeneración macular asociada a la edad (DMAE) tratada con aflibercept. Como objetivos secundarios se estudiaron la agudeza visual (AV) y la relación existente entre biomarcadores y pronóstico visual.

Material y métodos

Estudio prospectivo en el que se estudiaron 33 ojos de 40 pacientes naïve diagnosticados de NVC tipo 1 secundaria a DMAE y que habían sido tratados con aflibercept, según ficha técnica, durante 1 año. Los pacientes fueron evaluados en el momento del diagnóstico, a los 4, a los 8 y a los 12 meses.

Resultados

La ganancia media de AV a los 12 meses fue de 15,2 ± 3,3 letras. El área de lesión disminuyó 1,2 ± 1,0 mm2 en el cuarto mes (p < 0,0001), permaneciendo estable después. La presencia de capilares finos, anastomosis y halo hipointenso perilesional se redujo en el 85, el 70 y el 25%, respectivamente, a los 12 meses de seguimiento. La arcada vascular periférica cambió de morfología, pasando de tener un aspecto frondoso a tener un aspecto afilado en el 90% de los casos. El tamaño de la lesión y la presencia/ausencia de halo hipointenso perilesional se asociaron, de manera independiente, a la AV final, de tal forma que las lesiones de mayor tamaño y la ausencia de halo hipointenso perilesional en la visita basal se asociaron a menor ganancia de AV.

Conclusiones

La OCTA se trata de una herramienta útil, no invasiva, que nos aporta información cuantitativa y cualitativa del remodelado de la red vascular de la NVC tras terapia antiangiogénica.

Palabras clave:
Degeneración macular asociada a la edad
Neovascularización coroidea
OCT-angiografía
Anti-VEGF
Aflibercept

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