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Clinical Validation of a CRX Variant Leading to a Cone-Rod Dystrophy
Camila Pagán-Melvin1, Natalio Izquierdo2, Karla C Alejandro2
1Ophthalmology, Universidad Central del Caribe, Bayamon, PRI.
Cureus
|March 17, 2026
Summary
Cone-rod dystrophy (CORD) caused by CRX gene mutations leads to vision loss. Accurate diagnosis relies on correlating patient symptoms with genetic findings, especially for CRX variants.
Area of Science:
- Ophthalmology
- Genetics
- Molecular Biology
Background:
- Cone-rod dystrophy (CORD) is an inherited retinal disease causing progressive vision loss.
- Mutations in the CRX gene are a known cause of CORD, affecting photoreceptor function.
- CRX variant classification is challenging due to potential benign missense variants, necessitating genotype-phenotype correlation.

