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ABSTRACT
Background: Retinopathy of prematurity (ROP) is a multifactorial disease occurring in preterm neonates, caused by incorrect development of retinal blood vessels. It has been suggested that, in addition to gestational age, weight, and oxygen supplementation, genetic factors can play a role in the pathogenesis of ROP.
Methods: In the present prospective study, 97 neonates were enrolled based on the gestational age and weight, and genomic DNA from patients diagnosed with ROP and premature newborns without ROP was collected. The DNA sequence of protein coding and 5´and 3´ untranslated regions (UTRs) of the frizzled-4 (FZD4) gene and the genotype of the locus rs7934165:G˃A (NM_170731.4: c.3 + 10976 C˃T) within the brain-derived neurotrophic factor gene (BDNF) were determined.
Results: We detected a significant association between rs61749246:C˃A (NM_012193.3: c.*2G˃T) and ROP in a general genetic model as well as in a multiplicative model and by the Cochran-Armitage test for trend. Moreover, rs61749246 was strongly associated with ROP, requiring surgical intervention.
Conclusion: We suggest that rs61749246:C˃A of the FZD4 gene is likely associated with the development of ROP. It is necessary to confirm this suggestion in larger studies.
Conflict of interest
The authors declare no conflicts of interest.