Lujan-Fryns syndrome

Lujan-Fryns syndrome

An X-linked recessive mental retardation syndrome (OMIM:309520) characterised by tall stature, hypernasal voice, hyperextensible digits and high nasal root. 
Molecular pathology
Caused by defects of MED12, which encodes a protein of the CDK8 subcomplex that modulates polymerase II (POL-II)-mediator complex interactions, thereby regulating transcription initiation and re-initiation rates.