Assertion: gene's mutation | /r/HasProperty | responsible for several syndromes
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Source sentences:
text: In addition to epigenetic alterations, specific mutations affecting components of the epigenetic pathway have been identified that are responsible for several syndromes: DNMT3B in ICF (immunodeficiency, centromeric instability and facial anomalies) syndrome, MECP2 in Rett syndrome, ATRX in ATR-X syndrome (a-thalassemia/mental retardation syndrome, X-linked), and DNA repeats in facioscapulohumeral muscular dystrophy.