Clinical characteristics of adults suffering from high-functioning autism and comorbid obsessive-compulsive disorder

•ASD is a very heterogeneous disorder and the use of comorbidities could help to define the more homogeneous group, which is useful for both research and clinic.•OCD is one of the most frequent high-functioning ASD comorbidity.•High-functioning ASD patients with OCD comorbidity present a lower IQ and decreased social cognition skills compared to patients without OCD.•This emphasizes the impact of comorbidities on ASD symptoms, specifically the impact of OCD.•This should be taken into account when studying ASD patients to highlights new important results in ASD neurobiology.