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Genetic Factors of Idiopathic Polypoidal Vasculopathies in the ATM Gene (Ataxia Telangiectasia Mutated) — ATM  

Choroidal Neovascularization Clinical Trial

Official title:
Identification of the Predisposing Genetic Factors of Idiopathic Polypoidal Vasculopathies in the ATM Gene (Ataxia Telangiectasia Mutated)

Clinical Trial Summary

Polypoidal choriodal vasculopathy (PCV) is an ophthalmologic disease, characterized by vascular abnormalities of the walls of small choroidal vessels, reproducing the specific aspect of polyps (cluster aspect). PCV is one of the "boundary-forms" of age related macular degeneration.

These vasculopathies can be idiopathic. Following the radiotherapy treatments of active and occult-typed neovessels in Age-Related Macular Degeneration (ARMD), 10% of the patients would present typical polypoidal vasculopathic lesions. These polypoidal secondary lesions have been induced by radiotherapy treatment and may show an increased sensibility to radiation in these patients.

Such an increase of radiosensibility is noticed in ataxia telangiectasia syndrome, in relation to the ATM gene mutations. The secondary or idiopathic polypoidal vasculopathic lesions are to be brought closer to telangiectasias in Ataxia Telangiectasia. Considering the iatrogenic component of radiotherapy in the secondary forms of ataxia telangiectasia, it seems legitimate to search for predisposing variants to polypoidal vasculopathies in the ATM gene.

Considering the frequency of PCV worldwide, it seems important to identify the predisposing genetic factors of the ATM gene. These biomarkers to the pathology might enable us to offer prevention (reinforced protection against radiations, including light) and to develop therapeutics (recruitment of other kinases, ATM's partners, in the stability and cellular control of DNA).

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02857894
Study type Observational
Source Fondation Ophtalmologique Adolphe de Rothschild
Contact
Status Terminated
Phase
Start date November 5, 2015
Completion date October 23, 2018
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