Elevated plasma levels of cardiac troponin-I predict left ventricular systolic dysfunction in patients with myotonic dystrophy type 1: A multicentre cohort follow-up study.

A highly significant excess ( p = 0.0007) of DM1 patients presented with cTnI levels greater than the 99 th centile of the range usually observed in the general population (9 patients; 7.6%).

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There was a trend toward increased mortality in the high cTnI group that did not reach statistical significance.

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They found significantly higher levels of both serum cTnT and cTnI in those with myotonic dystrophy compared with controls, and a weakly significant association of both measures with disease duration.

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