J 2021

SDHC Methylation Pattern in Patients With Carney Triad

DAUMOVA, Magdalena, Marian SVAJDLER, Pavel FABIAN, Leoš KŘEN, Iva BABANKOVA et. al.

Basic information

Original name

SDHC Methylation Pattern in Patients With Carney Triad

Authors

DAUMOVA, Magdalena (203 Czech Republic), Marian SVAJDLER (203 Czech Republic), Pavel FABIAN (203 Czech Republic), Leoš KŘEN (203 Czech Republic, belonging to the institution), Iva BABANKOVA (203 Czech Republic), Marta JEŽOVÁ (203 Czech Republic, belonging to the institution), Monika SEDIVCOVA (203 Czech Republic), Tomas VANECEK (203 Czech Republic), Kristyna BEHENSKA (203 Czech Republic), Michal MICHAL (203 Czech Republic) and Ondrej DAUM (203 Czech Republic, guarantor)

Edition

APPLIED IMMUNOHISTOCHEMISTRY & MOLECULAR MORPHOLOGY, PHILADELPHIA, LIPPINCOTT WILLIAMS & WILKINS, 2021, 1541-2016

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30109 Pathology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.992

RIV identification code

RIV/00216224:14110/21:00124184

Organization unit

Faculty of Medicine

UT WoS

000696558400009

Keywords in English

Carney triad; somatic mosaicism; SDHC; methylation

Tags

Tags

International impact, Reviewed
Změněno: 16/2/2022 10:39, Mgr. Tereza Miškechová

Abstract

V originále

Carney triad is a multitumor syndrome affecting almost exclusively young women in a nonfamilial setting, which manifests by multifocal gastric gastrointestinal stromal tumors, paragangliomas, and pulmonary chondroma. The Carney triad-associated tumors are characterized by a deficiency of the mitochondrial succinate dehydrogenase enzymatic complex. Recently, it has been observed that the deficiency results from epigenetic silencing of the SDHC gene by its promoter hypermethylation. To elucidate anatomic distribution of SDHC promoter methylation in Carney triad patients and thus to shed some light on the possible natural development of this epigenetic change, both neoplastic and available non-neoplastic tissues of 3 patients with Carney triad were tested for hypermethylation at the SDHC promoter site. SDHC promoter hypermethylation was proven in all tumors studied. Lack of SDHC epigenetic silencing in the non-neoplastic lymphoid and duodenal tissue (ie, tissues not involved in the development of Carney triad-associated tumors) together with the finding of SDHC promoter hypermethylation in the non-neoplastic gastric wall favors the hypothesis of postzygotic somatic mosaicism as the biological background of Carney triad; it also offers an explanation of the multifocality of gastrointestinal stromal tumors of the stomach occurring in this scenario as well. However, the precise mechanism responsible for the peculiar organ-specific distribution of Carney triad-associated tumors is still unknown.