The prevalence of Autism Spectrum Disorder in Down Syndrome children attending the Child Development Centre in Universiti Kebangsaan Malaysia Medical Centre.

Introduction: The main objective of this study was to determine the prevalence of Autism Spectrum Disorder (ASD) in Down Syndrome (DS) children attending the DS clinic at Child Development Centre Universiti Kebangsaan Malaysia Medical Centre (CDC-UKMMC) and to assess the appropriateness of using an M-CHAT as an ASD screener in this population. We traced the karyotype results of our study population from their medical record and compared this to study participant with a dual diagnosis of Down Syndrome- Autism Spectrum Disorder (DS-ASD). Lastly, we assessed the awareness among parents attending our DS follow up clinic regarding the possibility of an ASD diagnosis in DS children.