A syndrome that is characterized by intrauterine growth retardation (IUGR), marked microcephaly, craniosynostosis, and severe malformation of the limbs, especially the arms and that has_material_basis_in homozygous mutation in the DONSON gene on chromosome 21q22. Biallelic mutation in the DONSON gene can also cause microcephaly, short stature, and limb abnormalities, a less severe disorder.