Childhood Apraxia of Speech (CAS) in two patients with 16p11.2 microdeletion syndrome.

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This study reports the first documented cases of Childhood Apraxia of Speech (CAS)—a severe motor speech disorder affecting a child's ability to plan and coordinate the movements needed for speech—in two children with 16p11.2 proximal deletion, helping families and clinicians know to screen for and address this specific speech challenge.