syndromic disease Lennox-Gastaut syndrome https://github.com/monarch-initiative/mondo/issues/5350 https://github.com/monarch-initiative/mondo/issues/8490 https://github.com/monarch-initiative/mondo/issues/9097 https://rarediseases.info.nih.gov/diseases/9912/lennox-gastaut-syndrome https://www.epilepsydiagnosis.org/syndrome/lgs-overview.html https://www.malacards.org/card/lennox_gastaut_syndrome https://www.malacards.org/card/macrocephaly_and_epileptic_encephalopathy DOID:0050561 UMLS:C0238111 ICD10CM:G40.81 MEDGEN:116044 encephalopathy of childhood NANDO:2200879 NORD:1358 MedDRA:10048816 NANDO:1200591 MESH:D065768 epileptic encephalopathy Lennox-Gastaut type Lennox-Gastaut syndrome (LGS) belongs to the group of severe childhood epileptic encephalopathies. macrocephaly and epileptic encephalopathy Orphanet:2382 OMIM:606369 SCTID:230418006 icd11.foundation:651135242 LGS MONDO:0016532 NCIT:C84816 GARD:0009912 genetic developmental and epileptic encephalopathy childhood-onset epilepsy syndrome with developmental and/or epileptic encephalopathy