Why the study?
Dilated cardiomyopathy is the most prevalent cardiomyopathy and linked to multiple genetic variants, requiring cellular models to investigate pathogenic mechanisms associated with TTN and TAB2 variants.
A novel human iPSC line was successfully generated from a DCM patient with TTN and TAB2 variants, providing a valuable in vitro model for investigating the pathogenic mechanisms of the disease.
Should not change DCM practice; extends iPSC models for TTN/TAB2 mechanistic research.
Dilated cardiomyopathy (DCM) represents the most prevalent form of cardiomyopathy. Multiple genetic variants are linked to DCM severity. We have established a human induced pluripotent stem cell (iPSC) line derived from a DCM patient harboring the p.M17164T (c.51491T>C) and p.Y138C (c.413A>G) mutations in the Titin (TTN) gene, as well as the p.Q3_S5del (c.9_17del) deletion in the TAB2 gene. The established iPSCs exhibited a normal karyotype (46, XX) and expressed pluripotency markers, successfully differentiating into cardiomyocytes. This cell line serves as a valuable resource for investigating the pathogenic mechanisms underlying DCM associated with TTN and TAB2 variants.
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Yuan et al. (2026) studied this question.
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