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Gene/phenotype/disorder under study

MED25, MEDIATOR OF RNA POLYMERASE II TRANSCRIPTION, SUBUNIT 25 (OMIM * 610197);

BASEL-VANAGAITE-SMIRIN-YOSEF SYNDROME; BVSYS (OMIM # 616449)

Abstract

Basel–Vanagaite–Smirin–Yosef syndrome (BVSYS) is a rare autosomal recessive disorder characterized by multiple congenital anomalies, including developmental delay, intellectual disability, and a variable spectrum of ocular, neurological, cardiac, and palatal malformations.

The mediator of RNA polymerase II transcription subunit-25 (MED25) is a component of the mediator (MED) complex, a coactivator involved in the regulated transcription of the majority of RNA polymerase II-dependent genes. The MED complex functions as a bridge, carrying information from gene-specific regulatory proteins to the RNA polymerase II transcription machinery (PMID: 14983011).

We are interested in performing genome methylation profiling in affected individuals to investigate the possibility of a diagnostic episignature, the clinical severity/variability and pathogenetic mechanism of the condition.

Supported by a grant from the Research Council of Norway (#358387).

Coordinating clinicians

Sofia Douzgou Houge MD, PhD, FRCP – sofia.douzgou.houge@helse-bergen.no

Dilsu Dicle Erkan MD

Institutions

Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway

Norwegian Centre for Rare Diagnoses, Frambu and Brain disorders unit, Oslo, Norway

Department of Medical Genetics, Ankara Etlik City Hospital, Turkey

Specific requirements beyond clinical data and genotype data sharing:

1- Re-analysis of DNA samples: Yes (DNA methylation analysis)

2- Resampling of patients: Yes (if DNA concentration not optimal)

3- Linked to a translational/basic research project: No