Microcephalic osteodysplastic primordial dwarfism type II (MOPD II) is a form of primordial dwarfism associated with brain and skeletal abnormalities.

[1] MOPD II is listed as a rare disease by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).

[2] Intelligence is reported by usually within low-normal or mild intellectual disability range.

[3] Some have average levels of intelligence, but may masked by specific learning disability.

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