Nager Syndrome is a condition resulting from problems in the development of the first and second branchial arches. The first arches produce the nerves and muscles for chewing, the lower jaw, two of three bones in the middle ear, and a small part of the ears. The second arches produce the nerves and muscles of facial expression, one bone in the middle ear, most of the external ears, and parts of the bone above the larynx. If it is true that the gene is dominant and is passed on from a parent, then the chances would increase of having another child with Nager Syndrome.
Genetic testing is highly recommended.
Several surgeries may be necessary depending on the severity of your child's Nager Syndrome. Your child should be treated by a qualified craniofacial medical team at a craniofacial center. This is by no means a comprehensive list of all the craniofacial teams. There are many families and organizations who will be glad to talk with you and help you with information and support. Don't forget books, videos, and websites.