Cystic Kidney Diseases in Children and Adults: Differences and Gaps in Clinical Management

Hanna, Christian; Iliuta, Ioan-Andrei; Besse, Whitney; Mekahli, Djalila; Chebib, Fouad T.

doi:10.1016/j.semnephrol.2023.151434

Seminars in Nephrology

2023

DOI: 10.1016/j.semnephrol.2023.151434

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Cystic Kidney Diseases in Children and Adults: Differences and Gaps in Clinical Management

Christian Hanna,

Ioan-Andrei Iliuta,

Whitney Besse

et al.

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2024

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Cited by 1 publication

References 129 publications

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A Novel COL4A5 Pathogenic Variant Joins the Dots in a Family with a Synchronous Diagnosis of Alport Syndrome and Polycystic Kidney Disease

Graziani,

Minotti,

Carriero

et al. 2024

Genes

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Alport Syndrome (AS) is the most common genetic glomerular disease, and it is caused by COL4A3, COL4A4, and COL4A5 pathogenic variants. The classic phenotypic spectrum associated with AS ranges from isolated hematuria to chronic kidney disease (CKD) with extrarenal abnormalities. Atypical presentation of the disorder is possible, and it can mislead the diagnosis. Polycystic kidney disease (PKD), which is most frequently associated with Autosomal Dominant PKD (ADPKD) due to PKD1 and PKD2 heterozygous variants, is emerging as a possible clinical manifestation in COL4A3-A5 patients. We describe a COL4A5 novel familial frameshift variant (NM_000495.5: c.1095dup p.(Leu366ValfsTer45)), which was associated with AS and PKD in the hemizygous proband, as well as with PKD, IgA glomerulonephritis and focal segmental glomerulosclerosis (FSGS) in the heterozygous mother. Establishing the diagnosis of AS can sometimes be difficult, especially in the context of misleading family history and atypical phenotypic features. This case study supports the emerging genotypic and phenotypic heterogeneity in COL4A3-A5-associated disorders, as well as the recently described association between PKD and collagen type IV (Col4) defects. We highlight the importance of the accurate phenotyping of all family members and the relevance of next-generation sequencing in the differential diagnosis of hereditary kidney disease.

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A Novel COL4A5 Pathogenic Variant Joins the Dots in a Family with a Synchronous Diagnosis of Alport Syndrome and Polycystic Kidney Disease

Graziani,

Minotti,

Carriero

et al. 2024

Genes

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show abstract

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Cystic Kidney Diseases in Children and Adults: Differences and Gaps in Clinical Management

Cited by 1 publication

References 129 publications

A Novel COL4A5 Pathogenic Variant Joins the Dots in a Family with a Synchronous Diagnosis of Alport Syndrome and Polycystic Kidney Disease

A Novel COL4A5 Pathogenic Variant Joins the Dots in a Family with a Synchronous Diagnosis of Alport Syndrome and Polycystic Kidney Disease

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