fetal trimethadione syndrome https://github.com/monarch-initiative/mondo/issues/6876 https://www.malacards.org/card/fetal_trimethadione_syndrome MONDO:0016009 ICD9:759.89 SCTID:66351003 MESH:C537798 Fetal trimethadione syndrome is a drug-related embryofetopathy that can occur when an embryo/fetus is exposed to trimethadione and that is characterized by pre- and post-natal growth retardation, intellectual deficit, developmental and speech delay, craniofacial anomalies (with some similarities to those seen in fetal valproate syndrome), and less commonly, cleft palate, malformations of the heart, urogenital system and limbs. Trimethadione is an antiepileptic drug that has been removed from the market in Europe and is no longer used much in other countries due to teratogenicity and potential side effects. MEDGEN:120538 icd11.foundation:1743242235 Orphanet:1913 UMLS:C0265373 toxic or drug-related embryofetopathy