A very limited sort of information is provided by you over here... In field of genetics it depends upon the complete evaluation in all aspects as the things does not stay to an individual and is going to effect his/her family.
The region you described here (17q12) is where is much to elaborate like on 17th chromosome a gain is seen at 2nd place of 1st band on its Q arm.
This doesnot states the complete thing in any means because there are several many genes are located at the region like MODY, LHX etc.. and minute mutation
in any gene may cause the subtle anomaly.
Further we do not know whether the gain is from same chromosome or from somewhere else?
Hence, I request you that you should see to a geneticist nearby to you with the complete details and reports whatever are produced till yet. If you are staying in developed country it will be quiet easy. However, if you are dwelling in a developing country you can seek an online consultation as these services are not much developed at such places or you have to find it hard.
Although there are no treatments are available today for the genetic defects but the prognosis could be made good with the precautions taking for such disorders at an early stage.
Hope the information satisfy your query.