What causes Split hand foot malformation ?
What causes split hand foot malformation? Split hand foot malformation may occur as an isolated feature or it may be associated with a genetic syndrome. Researchers believe that a large number of mutations can cause split hand foot malformation. A few of which have been identified: FBXW4 and TP63. Most commonly the conditions are passed through families in an autosomal dominant fashion with reduced penetrance. In autosomal dominant inheritance an affected parent would have a 1 in 2 or 50% chance with each pregnancy of passing the genetic defect to his/her offspring. In conditions with reduced penetrance a person who inherits the underlying genetic defect, may never develop the condition. More rarely other forms of inheritance have been reported (e.g., autosomal-recessive, X-linked, chromosome deletions, chromosome duplications).