Which of the following is not observed in cri-du-chat syndrome?

Hypotonia is seen in cri-du-chat syndrome, not hypeonia Cri-du-chat syndrome occurs due to deletion of chromosome 5p Main features: Hypotonia Characteristic shrill cry (cat-like cry) in the first few weeks of life) Microcephaly Hypeelorism Bilateral epicanthal folds High-arched palate Wide and flat nasal bridge Intellectual disability Ref: Nelson textbook of pediatrics 21st edition Pgno: 666