A low prevalence of sarcomeric gene variants in a Chinese cohort with left ventricular non-compaction.

Abstract:

:Left ventricular non-compaction (LVNC) is genetically heterogeneous. It has been previously shown that LVNC is associated with defects in TAZ, DNTA, LDB3, YWHAE, MIB1, PRDM16, and sarcomeric genes. This study was aimed to investigate sarcomeric gene mutations in a Chinese population with LVNC. From 2004 to 2010, 57 unrelated Chinese patients with LVNC were recruited at Fuwai Hospital, Beijing, China. Detailed clinical evaluation was performed on the probands and available family members. DNA samples isolated from the peripheral blood of the index cases were screened for 10 sarcomeric genes, including MYH7, MYBPC3, MYL2, MYL3, MYH6, TNNC1, TNNT2, TNNI3, TPM1, and ACTC1. Seven heterozygous mutations (6 missense and 1 deletion) were identified in 7 (12 %) of the patients. These mutations were distributed among 4 genes, 4 in MYH7, and 1 each in ACTC1, TNNT2, and TPM1. Six of the mutations were novel and another one was reported previously. All mutations affected conserved amino acid residues and were predicted to alter the structure of the proteins by in silico analysis. No significant difference was observed between mutation-positive and mutation-negative patients with respect to clinical characteristics at baseline and mortality during follow-up. In conclusion, our study indicates that sarcomeric gene mutations are uncommon causes of LVNC in Chinese patients and genetic background of the disease may be divergent among the different races.

journal_name

Heart Vessels

journal_title

Heart and vessels

authors

Tian T,Wang J,Wang H,Sun K,Wang Y,Jia L,Zou Y,Hui R,Zhou X,Song L

doi

10.1007/s00380-014-0503-x

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

258-64

issue

2

eissn

0910-8327

issn

1615-2573

journal_volume

30

pub_type

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