Study implicates new epigenetic player in mental retardation and facial birth defects

A subtle mutation affecting the epigenome - a set of dynamic factors that influence gene activity - may lead to an inherited form of mental retardation that affects boys, find researchers at Children's Hospital Boston. The disorder, which also involves cleft lip or cleft palate, appears to hinge on an enzyme working in a biological pathway that may offer several potential drug targets...

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