Paed referred us for genetic testing about 2 years ago, before asd diagnosis, as learning difficulties are common in my family. Had a review today, and ds has a duplicated chromosome which has been proven to coz his learning difficulties, asd, behaviours, lack of attention etc. it's an inherited defect, and he's inherited it from me, his dear mother. They also don't know of anyone else with the same defect as yet. Every time I look at him n think about him, the guilt is killing me. Part of me wishes I'd never found out :(