PuSH - Publication Server of Helmholtz Zentrum München

Müller-Nedebock, A.C.* ; Wenzel, E. ; Pfäffle, R.*

Uniparental disomy leads to a novel cause of MC2R-related familial glucocorticoid deficiency type 1.

Eur. J. Endocrinol. 193, K5-K10 (2025)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Familial Glucocorticoid Deficiency Type 1 (FGD1) is a rare autosomal recessive disease caused by pathogenic variants in the MC2R gene. This case report presents the first documented instance of FGD1 caused by a homozygous 1.421 kb deletion affecting the non-coding promoter region of MC2R. The patient, a 9-year-old girl, presented with severe cortisol insufficiency and hyperpigmentation starting at birth. Genetic testing initially missed the deletion, as standard whole-exome sequencing in 2016 did not include a copy number variation analysis. However, a whole-genome sequencing analysis in 2024 identified the deletion. The variant was inherited through paternal uniparental disomy (UPD), a rare genetic mechanism that caused the homozygous state. This case underscores the value of utilizing current genetic testing approaches, especially in cases where clinical features strongly suggest a genetic etiology despite inconclusive initial genetic testing results. Additionally, it highlights the need to consider non-coding regions and UPD in genetic diagnostics.
Impact Factor
Scopus SNIP
Altmetric
5.200
0.000
Tags
Annotations
Special Publikation
Hide on homepage

Edit extra information
Edit own tags
Private
Edit own annotation
Private
Hide on publication lists
on hompage
Mark as special
publikation
Publication type Article: Journal article
Document type Scientific Article
Keywords Mc2r ; Fgd1 ; Glucocorticoid Deficiency ; Upd 18 ; Non-coding; Acth Receptor; Mutations; Promoter
Language english
Publication Year 2025
HGF-reported in Year 2025
ISSN (print) / ISBN 0804-4643
e-ISSN 1479-683X
Quellenangaben Volume: 193, Issue: 2, Pages: K5-K10 Article Number: , Supplement: ,
Publisher BioScientifica
Publishing Place Great Clarendon St, Oxford Ox2 6dp, England
Reviewing status Peer reviewed
Institute(s) Helmholtz Institute for Metabolism, Obesity and Vascular Research (HI-MAG)
POF-Topic(s) 30201 - Metabolic Health
Research field(s) Helmholtz Diabetes Center
PSP Element(s) G-506503-001
Grants AI-assisted technologies in the writing process
German Research Foundation
Scopus ID 105013250987
PubMed ID 40729435
Erfassungsdatum 2025-08-01