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Novel variants in COL4A4 and COL4A5 are rare causes of FSGS in two unrelated families.


ABSTRACT: We report two female patients with focal segmental glomerulosclerosis and chronic kidney disease. The first patient was found to have a heterozygous, de novo, pathogenic variant in COL4A5 (c.141+1G>A, IVS2+1G>A), which is associated with Alport syndrome. The second patient was found to have a heterozygous, likely pathogenic variant in COL4A4 (c.2842G>T). Both these variants in COL4A5 and COL4A4 are novel, and they were detected using whole exome sequencing and gene panel testing, respectively. Additionally, we discuss the complexities of diagnosis in such cases and the benefits of using the abovementioned diagnostic approaches.

SUBMITTER: Hines SL 

PROVIDER: S-EPMC6039481 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Novel variants in <i>COL4A4</i> and <i>COL4A5</i> are rare causes of FSGS in two unrelated families.

Hines Stephanie L SL   Agarwal Anjali A   Ghandour Mohamedanwar M   Aslam Nabeel N   Mohammad Ahmed N AN   Atwal Paldeep S PS  

Human genome variation 20180710


We report two female patients with focal segmental glomerulosclerosis and chronic kidney disease. The first patient was found to have a heterozygous, de novo, pathogenic variant in <i>COL4A5</i> (c.141+1G>A, IVS2+1G>A), which is associated with Alport syndrome. The second patient was found to have a heterozygous, likely pathogenic variant in <i>COL4A4</i> (c.2842G>T). Both these variants in <i>COL4A5</i> and <i>COL4A4</i> are novel, and they were detected using whole exome sequencing and gene pa  ...[more]

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