| Phenotype details |
severe developmental delay; developmental regression; dysostosis multiplex; short stature; coarse facial features; macrocephaly; macroglossia; joint contractures; carpal tunnel syndrome; no inguinal hernia, no umbilical hernia; obesity; heart valve involvement; cardiomyopathy; adenotomy, no tonsillectomy; acute otitis media; hearing impairment; no seizures; no hydrocephalus |