help

Hi,
Well, my problem strats like this:Me and my housband  are about to have a child.We are very concerned about a family problem.My housband's mother and father are cousins.They got married, they defied all rules, they had a child, which is my housband.He ha born with hipospadias.We want to know that if we have a child , he coulb be born with a gennetic disease, because my housband's father and mother were cousins?My housband do not have another genetic malformation, but I wonder could my child develop a malformation because of the family history
Please help me with an answer.