title: A Turkish patient of typical Loeys-Dietz syndrome with a TGFBR2 mutation.
abstract: We describe a 2-year-old male patient with skeletal, neurological, cardiovascular, and connective tissue anomalies. Skeletal anomalies included pectus excavatum, hammer toes and hallux valgus and camptodactyly. The characteristic craniofacial findings of hypertelorism, down slanting palpebral fissures, strabismus, ptosis of eyelids, bifid uvula, high-arched palate and retrognathia were present. The proband has been operated on twice for bilateral inguinal hernia and several times for his foot deformities. Psychomotor development was retarded. At present, echocardiographic findings show aortic root dilation. The patient has important characteristics of Loeys-Dietz syndrome (LDS). Direct sequencing analysis of the transforming growth factor beta receptor I and II (TGFBR1 and 2) genes was performed and was demonstrated heterozygous missense mutation of the TGFBR2 gene in the patient, which confirms the diagnosis of LDS. This is the first Turkish patient with typical clinical signs of LDS. This report also illustrates that LDS and Shprintzen-Goldberg syndrome (SGS) have some common clinical characteristics.
authors.affiliation: Department of Medical Genetics, Abant Izzet Baysal University, Izzet Baysal Medical School, Bolu, Turkey. esratug@hotmail.com
authors.forename: E
authors.initials: E
authors.lastname: Tug
authors.forename: B
authors.initials: B
authors.lastname: Loeys
authors.forename: A
authors.initials: A
authors.lastname: De Paepe
authors.forename: H
authors.initials: H
authors.lastname: Aydin
authors.forename: K
authors.initials: K
authors.lastname: Gideroglu
mesh_terms: D001011:Aorta / Q000002:abnormalities*; D002675:Child, Preschool; D003398:Craniosynostoses; D004108:Dilatation, Pathologic; D006228:Hand Deformities, Congenital / Q000235:genetics; D006801:Humans; D055947:Loeys-Dietz Syndrome / Q000235:genetics*; D008297:Male; D020125:Mutation, Missense; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*; D000077294:Receptor, Transforming Growth Factor-beta Type II; D018125:Receptors, Transforming Growth Factor beta / Q000235:genetics*; D014421:Turkey
chemical_list: D018125:Receptors, Transforming Growth Factor beta; D017346:Protein Serine-Threonine Kinases; D000077294:Receptor, Transforming Growth Factor-beta Type II