In children with autism spectrum disorder, atypical gesture use is a core deficit with consequences for social learning, social interaction, and language development. Little is known about the relevance of early gesture use in predicting developmental outcomes of children receiving early interventions targeting social-communicative behaviors such as the Early Start Denver Model. We found that the parent-rated "Gestural Approach Behavior" subscale of the Pervasive Developmental Disorder Behavior Inventory was predictively associated with developmental changes after 1 year of intervention as assessed by the Mullen Scales of Early Learning. This subscale was as strong a predictor as the Mullen nonverbal development quotient before intervention. Our findings suggest that children who use more gestures for social communication might be better equipped to respond to the learning opportunities offered by the Early Start Denver Model.