has modifier X-linked inheritance X-linked disease intellectual disability genetic nervous system disorder X-linked intellectual disability An X-linked intellectual deficiency in which not enough information is known, reported or published to indicate whether a gene causes non-syndromic or syndromic presentations. MONDO:0100284 http://orcid.org/0000-0001-5208-3432 https://github.com/monarch-initiative/mondo/issues/2670