I'm looking for information (anecdotal or scientific) relating to CTNNB1 and language development. Specifically, at what age did your child hit specific developmental language milestones (1st word, 50 words, 2-word combination)? If you used a speech therapist, were there any specific techniques you thought were beneficial? Regarding communication medium, did you focus only on spoke language, sign-language, or both? Did you use a communication board to facilitate communication? There appears to be a scarcity of information out there, so any help at all would be greatly useful.