Sperm DNA is considered as the most vulnerable to oxidative stress-induced damage
that also impairs global sperm DNA methylation leading to sperm-associated pathologies.
C677T and A1298C polymorphisms of the methylene tetrahydrofolate reductase (MTHFR) gene affect MTHFR enzyme activity. This study was planned as a case–control study
to determine the MTHFR gene polymorphisms in the fathers of children affected with sporadic nonfamilial
heritable retinoblastoma in an Indian population. MTHFR polymorphisms for single nucleotide polymorphisms 677 and 1298 were also determined
in sporadic nonfamilial heritable retinoblastoma patients to estimate the risk for
retinoblastoma development and to evaluate the role of MTHFR in retinoblastoma pathogenesis.
Keywords
retinoblastoma - oxidative stress - polymorphism - methylation