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Case Reports
. 2023 Feb;191(2):605-611.
doi: 10.1002/ajmg.a.63054. Epub 2022 Nov 23.

Congenital diaphragmatic hernia in Coffin Siris syndrome: Further evidence from two cases

Martina Rimoldi  1 , Berardo Rinaldi  1 , Roberta Villa  1 , Jacopo Cerasani  2 , Benedetta Beltrami  1 , Maria Iascone  3 , Rosamaria Silipigni  4 , Simona Boito  5 , Silvana Gangi  2 , Lorenzo Colombo  2 , Matteo Porro  6 , Claudia Cesaretti  1 , Maria Francesca Bedeschi  1
Affiliations
Case Reports

Congenital diaphragmatic hernia in Coffin Siris syndrome: Further evidence from two cases

Martina Rimoldi et al. Am J Med Genet A. 2023 Feb.

Abstract

Coffin-Siris Syndrome (CSS) is a rare multi-system dominant condition with a variable clinical presentation mainly characterized by hypoplasia/aplasia of the nail and/or distal phalanx of the fifth digit, coarse facies, hirsutism/hypertrichosis, developmental delay and intellectual disability of variable degree and growth impairment. Congenital anomalies may include cardiac, genitourinary and central nervous system malformations whereas congenital diaphragmatic hernia (CDH) is rarely reported. The genes usually involved in CSS pathogenesis are ARID1B (most frequently), SMARCA4, SMARCB1, ARID1A, SMARCE1, DPF2, and PHF6. Here, we present two cases of CSS presenting with CDH, for whom Whole Exome Sequencing (WES) identified two distinct de novo heterozygous causative variants, one in ARID1B (case 1) and one in SMARCA4 (case 2). Due to the rarity of CDH in CSS, in both cases the occurrence of CDH did not represent a predictive sign of CSS but, on the other hand, prompted genetic testing before (case 1) or independently (case 2) from the clinical hypothesis of CSS. We provide further evidence of the association between CSS and CDH, reviewed previous cases from literature and discuss possible functional links to related conditions.

Keywords: ARID1B; Coffin-Siris syndrome; SMARCA4; congenital diaphragmatic hernia; whole exome sequencing.

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References

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