Am J Med Genet A
. 2024 Sep;194(9):e63629.
doi: 10.1002/ajmg.a.63629. Epub 2024 Apr 22. https://pubmed.ncbi.nlm.nih.gov/38647386/
A novel GRK2 variant in a patient with Jeune asphyxiating thoracic dysplasia accompanied by Morgagni hernia
Pelin Özlem Şimşek-Kiper 1, Beren Karaosmanoğlu 2, Ekim Zihni Taşkıran 2, Özlem Boybeyi Türer 3, Gülen Eda Utine 1, Tutku Soyer 3
Affiliations Expand
- PMID: 38647386
- DOI: 10.1002/ajmg.a.63629
Abstract
Skeletal ciliopathies constitute a subgroup of ciliopathies characterized by various skeletal anomalies arising from mutations in genes impacting cilia, ciliogenesis, intraflagellar transport process, or various signaling pathways. Short-rib thoracic dysplasias, previously known as Jeune asphyxiating thoracic dysplasia (ATD), stand out as the most prevalent and prototypical form of skeletal ciliopathies, often associated with semilethality. Recently, pathogenic variants in GRK2, a subfamily of mammalian G protein-coupled receptor kinases, have been identified as one of the underlying causes of Jeune ATD. In this study, we report a new patient with Jeune ATD, in whom exome sequencing revealed a novel homozygous GRK2 variant, and we review the clinical features and radiographic findings. In addition, our findings introduce Morgagni hernia and an organoaxial-type rotation anomaly of the stomach and midgut malrotation for the first time in the context of this recently characterized GRK2-related skeletal ciliopathy.
Keywords: GRK2; Morgagni hernia; exome sequencing; gastrointestinal malrotation; skeletal ciliopathy.
© 2024 Wiley Periodicals LLC.
