Comparing Gastrointestinal Endoscopy Findings in Children with Autism, Developmental Delay, or Typical Development.

To compare endoscopic and histologic upper endoscopy (esophagogastroduodenoscopy [EGD]) findings in children with autism spectrum disorders (ASD) to age- and gender-matched controls with developmental delay (DD) or with typical development (TD). Retrospective, cross-sectional study of children undergoing EGD, identifying those diagnosed with ASD, and matching on age and gender to children with DD or TD in ratio of 1:1:2. Rates of EGD findings were compared between the 3 groups using χ² or Fisher exact test. Multivariable linear regression was performed to identify predictors of abnormal histology. A total of 2104 patients were included (526 ASD; 526 DD; 1052 TD). Children with ASD had higher rates of abnormal esophageal histology (ASD 38.4%; DD 33.4%; TD 30.4%, P = .008), particularly esophagitis. In multivariable modeling, ASD diagnosis was an independent predictor of abnormal esophageal histology (OR [95% CI] 1.38 [1.09, 1.76]) compared with TD. Stomach findings did not differ among the groups. In the duodenum, histologic abnormalities were observed with lower frequency in ASD (ASD 17.0%; DD 20.1%; TD 24.2%, P = .005). In multivariable analysis, ASD diagnosis was not a significant predictor (OR 0.78 [0.56, 1.09]) of abnormal duodenal histology. Children with ASD have higher rates of histologic esophagitis compared with age- and gender-matched DD and TD controls. ASD was a significant independent predictor of abnormal esophageal, but not, duodenal, histology. These results underscore the importance of EGD in children with ASD.

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Declaration of Competing Interest The authors have no conflicts of interest relevant to this article to disclose. Dr Hron is supported by National Institutes of Health (K23 DK133679) and NASPGHANAstra-Zeneca Research Award. Dr Silvester is supported by National Institutes of HealthK23 KD119584. The other authors received no external funding.