Atenolol versus losartan in children and young adults with Marfan's syndrome

Ronald V. Lacro, Harry C. Dietz, Lynn A. Sleeper, Anji T. Yetman, Timothy J. Bradley, Steven D. Colan, Gail D. Pearson, E. Seda Selamet Tierney, Jami C. Levine, Andrew M. Atz, D. Woodrow Benson, Alan C. Braverman, Shan Chen, Julie De Backer, Bruce D. Gelb, Paul D. Grossfeld, Gloria L. Klein, Wyman W. Lai, Aimee Liou, Bart L. LoeysLarry W. Markham, Aaron K. Olson, Stephen M. Paridon, Victoria L. Pemberton, Mary Ella Pierpont, Reed E. Pyeritz, Elizabeth Radojewski, Mary J. Roman, Angela M. Sharkey, Mario P. Stylianou, Stephanie Burns Wechsler, Luciana T. Young, Lynn Mahony

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407 Scopus citations


BACKGROUND Aortic-root dissection is the leading cause of death in Marfan's syndrome. Studies suggest that with regard to slowing aortic-root enlargement, losartan may be more effective than beta-blockers, the current standard therapy in most centers. METHODS We conducted a randomized trial comparing losartan with atenolol in children and young adults with Marfan's syndrome. The primary outcome was the rate of aorticroot enlargement, expressed as the change in the maximum aortic-root-diameter z score indexed to body-surface area (hereafter, aortic-root z score) over a 3-year period. Secondary outcomes included the rate of change in the absolute diameter of the aortic root; the rate of change in aortic regurgitation; the time to aortic dissection, aortic-root surgery, or death; somatic growth; and the incidence of adverse events. RESULTS From January 2007 through February 2011, a total of 21 clinical centers enrolled 608 participants, 6 months to 25 years of age (mean [±SD] age, 11.5±6.5 years in the atenolol group and 11.0±6.2 years in the losartan group), who had an aorticroot z score greater than 3.0. The baseline-adjusted rate of change (±SE) in the aortic-root z score did not differ significantly between the atenolol group and the losartan group (-0.139±0.013 and -0.107±0.013 standard-deviation units per year, respectively; P = 0.08). Both slopes were significantly less than zero, indicating a decrease in the degree of aortic-root dilatation relative to body-surface area with either treatment. The 3-year rates of aortic-root surgery, aortic dissection, death, and a composite of these events did not differ significantly between the two treatment groups. CONCLUSIONS Among children and young adults with Marfan's syndrome who were randomly assigned to losartan or atenolol, we found no significant difference in the rate of aorticroot dilatation between the two treatment groups over a 3-year period. (Funded by the National Heart, Lung, and Blood Institute and others; number, NCT00429364.)

Original languageEnglish
Pages (from-to)2061-2071
Number of pages11
JournalNew England Journal of Medicine
Issue number22
StatePublished - Nov 27 2014


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