What are the causes of a cleft defect and how big is the risk that the baby will inherit that defect from its parents?

It has been determined that if one of the parents has a cleft, there is only a 4 percent chance for the defect to recur. It is a polygenic defect which means that there are many factors that may influence its formation. The best proof how little is needed for the cleft to form is the fact that in case of twins one is born with a cleft and the other without. Currently the doctors are only sure when the defect emerges (between the 6th and the 12th week of pregnancy), all other things are being investigated. Trust me – the most important thing is that polish doctors are able today to treat this defect well. So please, don’t worry prematurely.

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