Towens-Brocks syndrome. Presentation of a case
Keywords:
ANORECTAL MALFORMATIONS, POLYDACTYLY, APPENDIX, ANUS, IMPERFORATE, EAR DEFORMITIES, ACQUIRED.Abstract
Introduction: Townes-Brocks syndrome (TBS) is a malformation genetic disease, is an autosomal dominant genetic disorder, with complete penetrance and highly variable expressivity. It is characterized by a triad of congenital defects at the level of the external ear, anorectal and distal extremities, especially at the level of the thumbs, caused by mutations in the SALL1 gene, which codes for the transcription factor, located on chromosome 16q12.1.
Case presentation: a 9-month-old female infant was diagnosed at birth with imperforate anus, preauricular appendix and bifid first finger. The clinical diagnosis was immediately made and the surgical intervention ended in a well-tolerated colostomy, achieving good nutrition and psychomotor development.
Conclusions: early clinical diagnosis is considered important to carry out timely interventions to improve the vital functions on these patients, as well as to provide adequate genetic counseling to the families.
Downloads
References
1. Bozal-Basterra L, Martín-Ruíz I, Pirone L, Liang Y, Sigurðsson JO, Gonzalez-Santamarta M, Giordano I, et al. Truncated SALL1 Impedes Primary Cilia Function in Townes-Brocks Syndrome. Am J Hum Genet. [Internet]. 2018 Feb 1 [citado: 10/12/20]; 102(2): [aprox. 7p.]. Disponible en: https://www.sciencedirect.com/science/article/pii/S0002929717305074?via%3Dihub
2. Webb BD, Metikala S, Wheeler PG, Sherpa MD, Houten SM, Horb ME, et al. Heterozygous Pathogenic Variant in DACT1 Causes an Autosomal-Dominant Syndrome with Features Overlapping Townes-Brocks Syndrome Human Mutation [Internet]. 2017 Apr [citado: 10/12/20]; 38(4): [aprox. 5p.]. Disponible en: https://onlinelibrary.wiley.com/doi/epdf/10.1002/humu.23171
3. Lin FJ, Lu W, Gale D, Yao Y, Zou R, Bian F, Jiang GR. Delayed diagnosis of Townes-Brocks syndrome with multicystic kidneys and renal failure caused by a novel SALL1 nonsense mutation: A case report. Exp Ther Med. [Internet]. 2016 Apr [citado: 10/12/20]; 11(4): [aprox. 3p.]. Disponible en: https://www.spandidos-publications.com/10.3892/etm.2016.3035
4. Lorencin M, Bulic K. On-Top Index Pollicization After a Partial Amputation of a Syndactylized Hypoplastic Thumb in a Patient With Townes-Brocks Syndrome. Ann Plast Surg. [Internet]. 2017 Sep [citado: 10/12/20]; 79(3): [aprox. 6p.]. Disponible en: https://pubmed.ncbi.nlm.nih.gov/28509696/
5. Liberalesso PBN, Cordeiro ML, Karuta SCV, Koladicz KRJ, Nitsche A, Zeigelboim BS, et al. Phenotypic and genotypic aspects of Townes-Brock syndrome: case report of patient in southern Brazil with a new SALL1 hotspot region nonsense mutation. BMC Med Genet. [Internet]. 2017 Nov 6 [citado: 10/12/20]; 18(1): [aprox. 2p.]. Disponible en: https://bmcmedgenet.biomedcentral.com/articles/10.1186/s12881-017-0483-7
6. Bozal-Basterra L, Martín-Ruíz I, Pirone L, Liang Y, Sigurðsson JO, Gonzalez-Santamarta M, et al. Truncated SALL1 Impedes Primary Cilia Function in Townes-Brocks Syndrome. Am J Hum Genet. [Internet]. 2018 Feb 1 [citado: 10/12/20];102(2): [aprox. 14p.].. Disponible en: https://www.sciencedirect.com/science/article/pii/S0002929717305074?via%3Dihub
7. Amirhassankhani S, Lloyd MS. Accessory Auricles: Systematic Review of Definition, Associated Conditions, and Recommendations for Clinical Practice. J Craniofac Surg. [Internet]. 2018 Mar [citado: 10/12/20]; 29(2): [aprox. 6p.]. Disponible en: https://pubmed.ncbi.nlm.nih.gov/29239919/
8. Valikodath NG, Jain S, Miller M, Kaufman LM. Ocular features of Townes-Brocks syndrome. J AAPOS. [Internet]. 2020 Apr [citado: 10/12/20]; 24(2): [aprox. 5p.].Disponible en: https://pubmed.ncbi.nlm.nih.gov/31981611/
9. Bozal-Basterra L, Gonzalez-Santamarta M, Muratore V, Bermejo-Arteagabeitia A, Da Fonseca C, Barroso-Gomila O, et al. LUZP1, a novel regulator of primary cilia and the actin cytoskeleton, is a contributing factor in Townes-Brocks Syndrome. Elife. [Internet]. 2020 Jun 18 [citado: 10/12/20]; 9: e55957. [aprox. 3p.]. Disponible en: https://pubmed.ncbi.nlm.nih.gov/32553112/
10. Stevens CA, May KM. Deletion upstream of SALL1 producing Townes-Brocks syndrome. Am J Med Genet A. [Internet]. 2016 Sep [citado:10/12/20]; 170(9): [aprox. 3p.]. Disponible en: https://pubmed.ncbi.nlm.nih.gov/27277004/
Downloads
Published
How to Cite
Issue
Section
License
Authors who have publications with this journal agree to the following terms: Authors will retain their copyrights and grant the journal the right of first publication of their work, which will be publication of their work, which will be simultaneously subject to the Creative Commons Attribution License (CC-BY-NC 4.0) that allows third parties to share the work as long as its author and first publication in this journal are indicated.
Authors may adopt other non-exclusive license agreements for distribution of the published version of the work (e.g.: deposit it in an institutional telematic archive or publish it in a volume). Likewise, and according to the recommendations of the Medical Sciences Editorial (ECIMED), authors must declare in each article their contribution according to the CRediT taxonomy (contributor roles). This taxonomy includes 14 roles, which can be used to represent the tasks typically performed by contributors in scientific academic production. It should be consulted in monograph) whenever initial publication in this journal is indicated. Authors are allowed and encouraged to disseminate their work through the Internet (e.g., in institutional telematic archives or on their web page) before and during the submission process, which may produce interesting exchanges and increase citations of the published work. (See The effect of open access). https://casrai.org/credit/