Our son turned 3 in jan. and is just now trying to say some words. He never really babbled when he was younger. We have had his hearing tested twice, he saw an E.N.T and was ok. Pediatric Neurologist said he needed to see a neuro developementa dr so he saw them in decemeber and had a brain mri in jan which was ok. Recently has had chromosome testing which showed that all his chromosomes are there but at chromosome 7 he has "double" of something which they told us they are unsure why or if it is related and that we may never know because there are no other cases out there like this which I find hard to believe and just would like to know wether it is something to worry about or not? My husband and I just had our blood drawn today to be tested which will take 2-3 wks to get the results. We also have a 5 yr old son who is fine and our 10 month old seems to be developing fine. If someone could help me out we would so greatful!!