Craniofacial abnormalities include microcephaly, hypertelorism, epicanthus, a small triangular upturned nose, and flat face.
[egl-eurofins.com]
[…] symbols: JMS, MRX52, RAD54, XH2, XNP ) Mouse Orthologs Atrx (Withdrawn symbols: 4833408C14Rik, AI447451, DXHXS6677E, Hp1bp2, Rad54, Xnp ) Source OMIM:309580 (names, synonyms
[mousephenotype.org]
They also have psychomotor retardation which is the slowing-down of thoughts and a reduction of physical movements.
[en.wikipedia.org]