Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene

Bardet-Biedl syndrome (BBS) is a rare, autosomal recessive disorder, resulting from mutations in various genes, including TTC8. Abnormal variants in this gene were found in the case of our patients – twin sisters diagnosed with BBS. Next-generation sequencing revealed variants in the TTC8 gene: c.-1...

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Main Authors: Agnieszka Murawska, Kamil Możdżeń, Grzegorz Horosin, Edward Pędziwiatr, Joanna Makowska, Jakub Pośpiech, Konrad Kaleta, Dorota Drożdż, Katarzyna Zachwieja
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Language:English
Published: Termedia Publishing House 2024-09-01
Series:Pediatria Polska
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Online Access:https://www.termedia.pl/Case-report-of-twins-with-Bardet-Biedl-syndrome-exhibiting-a-rare-mutation-in-the-TTC8-gene,127,54958,1,1.html
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author Agnieszka Murawska
Kamil Możdżeń
Grzegorz Horosin
Edward Pędziwiatr
Joanna Makowska
Jakub Pośpiech
Konrad Kaleta
Dorota Drożdż
Katarzyna Zachwieja
author_facet Agnieszka Murawska
Kamil Możdżeń
Grzegorz Horosin
Edward Pędziwiatr
Joanna Makowska
Jakub Pośpiech
Konrad Kaleta
Dorota Drożdż
Katarzyna Zachwieja
author_sort Agnieszka Murawska
collection DOAJ
description Bardet-Biedl syndrome (BBS) is a rare, autosomal recessive disorder, resulting from mutations in various genes, including TTC8. Abnormal variants in this gene were found in the case of our patients – twin sisters diagnosed with BBS. Next-generation sequencing revealed variants in the TTC8 gene: c.-104G>A [NM_001288783, rs119103286] and c.635T>C [NM_144596], which are associated with BBS type 8. The variant found in the patients’ mother was c.-104G>A, and in the patients’ father was c.635T>C, but they did not exhibit any BBS symptoms. Both twins presented several symptoms characteristic of BBS, such as retinopathy, visceral obesity, postaxial polydactyly, renal dysfunction, cognitive impairment, facial dysmorphia, and dental abnormalities. Table 1 compares BBS to other diseases, to facilitate differential diagnosis. Table 2 shows the symptoms of BBS and their frequency of occurrence and Table 3 compares cases of BBS with TTC8 mutation found in the literature.
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spelling doaj-art-2a94d7b1ff1b484e880c9d2e24e47ed32025-01-27T10:39:51ZengTermedia Publishing HousePediatria Polska0031-39392300-86602024-09-0199437838410.5114/polp.2024.14388554958Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 geneAgnieszka MurawskaKamil MożdżeńGrzegorz HorosinEdward PędziwiatrJoanna MakowskaJakub PośpiechKonrad KaletaDorota DrożdżKatarzyna ZachwiejaBardet-Biedl syndrome (BBS) is a rare, autosomal recessive disorder, resulting from mutations in various genes, including TTC8. Abnormal variants in this gene were found in the case of our patients – twin sisters diagnosed with BBS. Next-generation sequencing revealed variants in the TTC8 gene: c.-104G>A [NM_001288783, rs119103286] and c.635T>C [NM_144596], which are associated with BBS type 8. The variant found in the patients’ mother was c.-104G>A, and in the patients’ father was c.635T>C, but they did not exhibit any BBS symptoms. Both twins presented several symptoms characteristic of BBS, such as retinopathy, visceral obesity, postaxial polydactyly, renal dysfunction, cognitive impairment, facial dysmorphia, and dental abnormalities. Table 1 compares BBS to other diseases, to facilitate differential diagnosis. Table 2 shows the symptoms of BBS and their frequency of occurrence and Table 3 compares cases of BBS with TTC8 mutation found in the literature.https://www.termedia.pl/Case-report-of-twins-with-Bardet-Biedl-syndrome-exhibiting-a-rare-mutation-in-the-TTC8-gene,127,54958,1,1.htmlcase report mutation ciliopathy bardet-biedl syndrome ttc8
spellingShingle Agnieszka Murawska
Kamil Możdżeń
Grzegorz Horosin
Edward Pędziwiatr
Joanna Makowska
Jakub Pośpiech
Konrad Kaleta
Dorota Drożdż
Katarzyna Zachwieja
Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
Pediatria Polska
case report
mutation
ciliopathy
bardet-biedl syndrome
ttc8
title Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
title_full Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
title_fullStr Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
title_full_unstemmed Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
title_short Case report of twins with Bardet-Biedl syndrome exhibiting a rare mutation in the TTC8 gene
title_sort case report of twins with bardet biedl syndrome exhibiting a rare mutation in the ttc8 gene
topic case report
mutation
ciliopathy
bardet-biedl syndrome
ttc8
url https://www.termedia.pl/Case-report-of-twins-with-Bardet-Biedl-syndrome-exhibiting-a-rare-mutation-in-the-TTC8-gene,127,54958,1,1.html
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