I have no experience with that duplication. My daughter has 16p11.2 deletion syndrome and I have had luck finding Facebook groups for either that exact location or even just the 16th chromosome. You may be able to find more info there. Good luck!
ETA: Also, https://www.rarechromo.org/html/home.asp might have some info for you. They also have a world wide database where, once you register, they are able to connect you with others around the world dealing with your specific duplication.
Re: DNA results in
ETA: Also, https://www.rarechromo.org/html/home.asp might have some info for you. They also have a world wide database where, once you register, they are able to connect you with others around the world dealing with your specific duplication.