A nonsyndromic X-linked mental retardation (NS-XLMR) characterized by mild intellectual deficit. FRAXE is the most common form of NS-XLMR. The disease is Monarch Disease Ontology term MONDO_0010659 (FRAXE intellectual disability). Also known as: intellectual developmental disorder, X-linked 109, X-linked recessive, intellectual disability associated with fragile site FRAXE.