X-Linked Intellectual Disability-Psychosis-Macroorchidism Syndrome, also known as lindsay-burn syndrome, is related to intellectual developmental disorder, x-linked, syndromic 13 and encephalopathy, neonatal severe, due to mecp2 mutations. An important gene associated with X-Linked Intellectual Disability-Psychosis-Macroorchidism Syndrome is MECP2 (Methyl-CpG Binding Protein 2), and among its related pathways/superpathways is Chromatin Regulation / Acetylation. Affiliated tissues include testes and heart, and related phenotypes are seizure and macroorchidism