A highly penetrant form of childhood apraxia of speech due to deletion of 16p11.2.

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This study shows that a proximal 16p11.2 deletion is very strongly linked to childhood apraxia of speech, a motor‑based speech disorder, helping families understand that speech difficulties are a direct biological part of this condition and emphasizing the importance of early diagnosis and specialized motor‑speech therapy (not just general speech therapy) to best support communication development.