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  • Title: A Genotyped Case of Townes-Brocks Syndrome with Absent Pulmonary Valve Syndrome from Turkey.
    Author: Ilhan O, Gumus E, Hakan N, Istar H, Harmandar B, Olgun H, Karakus SC, Cullu N, Kohlhase J, Sutherland JD, Barrio R.
    Journal: J Pediatr Genet; 2024 Jun; 13(2):139-143. PubMed ID: 38721582.
    Abstract:
    Townes-Brocks syndrome (TBS) is a rare syndrome characterized by triad of anal, ear, and thumb anomalies. Further malformations/anomalies include congenital heart diseases, foot malformations, sensorineural and/or conductive hearing impairment, genitourinary malformations, and anomalies of eye and nervous system. Definitive diagnosis for TBS is confirmed by molecular analysis for mutations in the SALL1 gene. Only one known case of TBS with absent pulmonary valve syndrome (APVS) has been previously described to our knowledge. Here, we report a newborn diagnosed with TBS with APVS and tetralogy of Fallot (TOF) who was found to carry the most common pathogenic SALL1 gene mutation c.826C > T (p.R276X), with its surgical repair and postoperative follow-up. To our knowledge, this is the first genotyped case of TBS from Turkey to date. TBS should be suspected in the presence of ear, anal, and thumb malformations in a neonate. If a patient with TBS and TOF-APVS needs preoperative ventilation within the first months of life, this implies prolonged postoperative intubation and increased risk of mortality.
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