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Oerlemans, Ass. Prof. Dr.","moerlem4@umcutrecht.nl",{"name":145,"role":38,"phone":7,"phoneExt":7,"email":7},{"name":149,"role":52,"phone":7,"phoneExt":7,"email":7},"Steven A Muller, Dr.",{"type":38,"investigatorFullName":151,"investigatorTitle":152,"investigatorAffiliation":5,"oldNameTitle":7,"oldOrganization":7},"Christian Nitsche","Priv.-Doz. Dr. med. univ., PhD","100580339","a-multicenter-study-on-atrioventricular-regurgitation-in-transthyretin-amyloid-cardiomyopathy-definition-prevalence-and-prognostic-impact-100580339",false,"NCT06836011","A Multicenter Study on Atrioventricular Regurgitation in Transthyretin Amyloid Cardiomyopathy: Definition, Prevalence, and Prognostic Impact.","Definition and Prognosis of Atrioventricular Regurgitation in Transthyretin Amyloid Cardiomyopathy - a Prospective International Multicenter Study","Inclusion Criteria:\n\n* Diagnosis of ATTR-CM according to current diagnostic criteria\n* Comprehensive baseline echocardiographic assessment, including (semi-)quantitative mitral and tricuspid regurgitation (MR\u002FTR) parameters, performed within ±6 months of diagnosis\n* Age ≥ 18 years\n* Willingness to participate in the study and provide informed consent\n\nExclusion Criteria:\n\n* Severe aortic valve disease requiring intervention\n* Inability to provide informed consent or participate in study follow-up","ALL","18 Years",{"count":163,"type":164},600,"ESTIMATED","OBSERVATIONAL","The objective of this prospective registry study is to comprehensively characterize the prevalence, (semi-) quantitative parameters, and associated clinical outcomes of mitral (MR) and tricuspid regurgitation (TR) in patients diagnosed with transthyretin amyloid cardiomyopathy (ATTR-CM). The study further aims to develop and implement new grading standards for the quantitative assessment of regurgitation severity, tailored to the distinct hemodynamic profile of ATTR-CM. This approach seeks to address the limitations of current regurgitation severity classifications, which do not adequately reflect the unique pathophysiology of a restrictive phenotype as seen in ATTR-CM.",[168,169,170,171,172],"ATTR Amyloidosis With Cardiomyopathy","ATTR-CM","ATTR Amyloidosis Wild Type","Mitral Regurgitation","Tricuspid Regurgitation",[169,174,172,171],"ATTR amyloidosis","2025-02-14",{"date":177,"type":178},"2025-02-19","ACTUAL",{"date":180,"type":178},"2025-01-01",{"date":182,"type":164},"2026-12-31",{"name":5,"class":6},8]