A CNN-aided method to predict glaucoma progression using DARC (Detection of Apoptosing Retinal Cells).


Journal

Expert review of molecular diagnostics
ISSN: 1744-8352
Titre abrégé: Expert Rev Mol Diagn
Pays: England
ID NLM: 101120777

Informations de publication

Date de publication:
07 2020
Historique:
pubmed: 21 4 2020
medline: 22 9 2021
entrez: 21 4 2020
Statut: ppublish

Résumé

A key objective in glaucoma is to identify those at risk of rapid progression and blindness. Recently, a novel first-in-man method for visualising apoptotic retinal cells called DARC (Detection-of-Apoptosing-Retinal-Cells) was reported. The aim was to develop an automatic CNN-aided method of DARC spot detection to enable prediction of glaucoma progression. Anonymised DARC images were acquired from healthy control (n=40) and glaucoma (n=20) Phase 2 clinical trial subjects (ISRCTN10751859) from which 5 observers manually counted spots. The CNN-aided algorithm was trained and validated using manual counts from control subjects, and then tested on glaucoma eyes. The algorithm had 97.0% accuracy, 91.1% sensitivity and 97.1% specificity to spot detection when compared to manual grading of 50% controls.  It was next tested on glaucoma patient eyes defined as progressing or stable based on a significant (p<0.05) rate of progression using OCT-retinal nerve fibre layer measurements at 18 months. It demonstrated 85.7% sensitivity, 91.7% specificity with AUC of 0.89, and a significantly (p=0.0044) greater DARC count in those patients who later progressed. This CNN-enabled algorithm provides an automated and objective measure of DARC, promoting its use as an AI-aided biomarker for predicting glaucoma progression and testing new drugs.

Sections du résumé

BACKGROUND
A key objective in glaucoma is to identify those at risk of rapid progression and blindness. Recently, a novel first-in-man method for visualising apoptotic retinal cells called DARC (Detection-of-Apoptosing-Retinal-Cells) was reported. The aim was to develop an automatic CNN-aided method of DARC spot detection to enable prediction of glaucoma progression.
METHODS
Anonymised DARC images were acquired from healthy control (n=40) and glaucoma (n=20) Phase 2 clinical trial subjects (ISRCTN10751859) from which 5 observers manually counted spots. The CNN-aided algorithm was trained and validated using manual counts from control subjects, and then tested on glaucoma eyes.
RESULTS
The algorithm had 97.0% accuracy, 91.1% sensitivity and 97.1% specificity to spot detection when compared to manual grading of 50% controls.  It was next tested on glaucoma patient eyes defined as progressing or stable based on a significant (p<0.05) rate of progression using OCT-retinal nerve fibre layer measurements at 18 months. It demonstrated 85.7% sensitivity, 91.7% specificity with AUC of 0.89, and a significantly (p=0.0044) greater DARC count in those patients who later progressed.
CONCLUSION
This CNN-enabled algorithm provides an automated and objective measure of DARC, promoting its use as an AI-aided biomarker for predicting glaucoma progression and testing new drugs.

Identifiants

pubmed: 32310684
doi: 10.1080/14737159.2020.1758067
pmc: PMC7115906
mid: EMS86250
doi:

Substances chimiques

Annexin A5 0

Types de publication

Comparative Study Journal Article Research Support, Non-U.S. Gov't Validation Study

Langues

eng

Sous-ensembles de citation

IM

Pagination

737-748

Subventions

Organisme : Wellcome Trust
ID : 088029
Pays : United Kingdom
Organisme : Wellcome Trust
ID : 099729
Pays : United Kingdom

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Auteurs

Eduardo M Normando (EM)

ICORG, Imperial College London , London, UK.
Western Eye Hospital, Imperial College Healthcare NHS Trust , London, UK.

Tim E Yap (TE)

ICORG, Imperial College London , London, UK.
Western Eye Hospital, Imperial College Healthcare NHS Trust , London, UK.

John Maddison (J)

Maddisys Ltd , London, UK.

Serge Miodragovic (S)

ICORG, Imperial College London , London, UK.

Paolo Bonetti (P)

ICORG, Imperial College London , London, UK.

Melanie Almonte (M)

ICORG, Imperial College London , London, UK.

Nada G Mohammad (NG)

ICORG, Imperial College London , London, UK.

Sally Ameen (S)

ICORG, Imperial College London , London, UK.

Laura Crawley (L)

ICORG, Imperial College London , London, UK.

Faisal Ahmed (F)

ICORG, Imperial College London , London, UK.

Philip A Bloom (PA)

ICORG, Imperial College London , London, UK.
Western Eye Hospital, Imperial College Healthcare NHS Trust , London, UK.

Maria Francesca Cordeiro (MF)

ICORG, Imperial College London , London, UK.
Western Eye Hospital, Imperial College Healthcare NHS Trust , London, UK.
UCL Institute of Ophthalmology , London, UK.

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