GATA4 Variants in Individuals With a 46,XY Disorder of Sex Development (DSD) May or May Not Be Associated With Cardiac Defects Depending on Second Hits in Other DSD Genes.

Martinez de LaPiscina, Idoia; de Mingo, Carmen; Riedl, Stefan; Rodriguez, Amaia; Pandey, Amit Vikram; Fernández-Cancio, Mónica; Camats, Nuria; Sinclair, Andrew; Castaño, Luis; Audi, Laura; Flück Pandey, Christa Emma (2018). GATA4 Variants in Individuals With a 46,XY Disorder of Sex Development (DSD) May or May Not Be Associated With Cardiac Defects Depending on Second Hits in Other DSD Genes. Frontiers in endocrinology, 9, p. 142. Frontiers Research Foundation 10.3389/fendo.2018.00142

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Disorders of sex development (DSD) consist of a wide range of conditions involving numerous genes. Nevertheless, about half of 46,XY individuals remain genetically unsolved. gene variants, mainly related to congenital heart defects (CHD), have also been recently associated with 46,XY DSD. In this study, we characterized three individuals presenting with 46,XY DSD with or without CHD and variants in order to understand the phenotypical variability. We studied one patient presenting CHD and 46,XY gonadal dysgenesis, and two patients with a history of genetically unsolved 46,XY DSD, also known as male primary hypogonadism. Mutation analysis was carried out by candidate gene approach or targeted gene panel sequencing. Functional activity of GATA4 variants was tested on the CYP17 promoter involved in sex development using JEG3 cells. We found two novel and one previously described variants located in the N-terminal zinc finger domain of the protein. Cys238Arg variant lost transcriptional activity on the CYP17 promoter reporter, while Trp228Cys and Pro226Leu behaved similar to wild type. These results were in line with bioinformatics simulation studies. Additional DSD variations, in the and genes, respectively, were identified in the two 46,XY individuals without CHD. Overall, our study shows that human mutations identified in patients with 46,XY DSD may or may not be associated with CHD. Possible explanations for phenotypical variability may comprise incomplete penetrance, variable sensitivity of partner genes, and oligogenic mechanisms.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine > Endocrinology/Metabolic Disorders

UniBE Contributor:

Pandey, Amit Vikram and Flück Pandey, Christa Emma

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

1664-2392

Publisher:

Frontiers Research Foundation

Language:

English

Submitter:

Christa Emma Flück Pandey

Date Deposited:

12 Feb 2019 12:33

Last Modified:

07 Nov 2019 22:30

Publisher DOI:

10.3389/fendo.2018.00142

PubMed ID:

29670578

Uncontrolled Keywords:

46,XY DSD DSD GATA4 congenital heart defects disorder of sexual development oligogenic

BORIS DOI:

10.7892/boris.114930

URI:

https://boris.unibe.ch/id/eprint/114930

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