{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T19:22:32Z","timestamp":1790796152711,"version":"4.1.0"},"reference-count":34,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circ: Cardiovascular Imaging"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:sec>\n            <jats:title>BACKGROUND:<\/jats:title>\n            <jats:p>Assessing myocardial strain by cardiac magnetic resonance feature tracking (FT) has been found to be useful in patients with overt hypertrophic cardiomyopathy (HCM). Little is known, however, of its role in sarcomere gene mutation carriers without overt left ventricular hypertrophy (subclinical HCM).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>METHODS:<\/jats:title>\n            <jats:p>Thirty-eight subclinical HCM subjects and 42 healthy volunteers were enrolled in this multicenter case-control study. They underwent a comprehensive cardiac magnetic resonance study. Two-dimensional global radial, circumferential, and longitudinal strain of the left ventricle (LV) were evaluated by FT analysis.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>RESULTS:<\/jats:title>\n            <jats:p>\n              The subclinical HCM sample was 41 (22\u201351) years old and 32% were men. FT analysis revealed a reduction in global radial strain (29\u00b17.2 versus 47.9\u00b17.4;\n              <jats:italic toggle=\"yes\">P<\/jats:italic>\n              &lt;0.0001), global circumferential strain (\u221217.3\u00b12.6 -versus -20.8\u00b17.4;\n              <jats:italic toggle=\"yes\">P<\/jats:italic>\n              &lt;0.0001) and global longitudinal strain (\u221216.9\u00b12.4 versus \u221220.5\u00b12.6;\n              <jats:italic toggle=\"yes\">P<\/jats:italic>\n              &lt;0.0001) in subclinical HCM compared with control subjects. The significant differences persisted when considering the 23 individuals free of all the structural and functional ECG and cardiac magnetic resonance abnormalities previously described. Receiver operating characteristic curve analyses showed that the differential diagnostic performances of FT in discriminating subclinical HCM from normal subjects were good to excellent (global radial strain with optimal cut-off value of 40.43%: AUC, 0.946 [95% CI, 0.93\u20131.00]; sensitivity 90.48%, specificity 94.44%; global circumferential strain with cut-off, \u221218.54%: AUC, 0.849 [95% CI, 0.76\u20130.94]; sensitivity, 88.10%; specificity, 72.22%; global longitudinal strain with cut-off, \u221219.06%: AUC, 0.843 [95% CI, 0.76\u20130.93]; sensitivity, 78.57%; specificity, 78.95%). Similar values were found for discriminating those subclinical HCM subjects without other phenotypic abnormalities from healthy volunteers (global radial strain with optimal cut-off 40.43%: AUC, 0.966 [95% CI, 0.92\u20131.00]; sensitivity, 90.48%; specificity, 95.45%; global circumferential strain with cut-off, \u221218.44%: AUC, 0.866 [95% CI, 0.76\u20130.96]; sensitivity, 92.86%; specificity, 77.27%; global longitudinal strain with cut-off, \u221217.32%: AUC, 0.838 [95% CI, 0.73\u20130.94]; sensitivity, 90.48%; specificity, 65.22%).\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>CONCLUSIONS:<\/jats:title>\n            <jats:p>Cardiac magnetic resonance FT-derived parameters are consistently lower in subclinical patients with HCM, and they could emerge as a good tool for discovering the disease during a preclinical phase.<\/jats:p>\n          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M.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giulia","family":"Grilli","sequence":"additional","affiliation":[{"name":"Cardiovascular Department, Centre for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Integrata di Trieste, University of Trieste, Italy (G.d.G., M.C., G.G., A.D.L., M.d.F., N.B., M.B., A.P., G.S., M.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4502-6621","authenticated-orcid":true,"given":"Antonio","family":"De Luca","sequence":"additional","affiliation":[{"name":"Cardiovascular Department, Centre for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Integrata di Trieste, University of Trieste, Italy (G.d.G., M.C., G.G., A.D.L., M.d.F., N.B., M.B., A.P., G.S., M.M.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2310-0448","authenticated-orcid":true,"given":"Matteo","family":"Dal 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