The American Heart Association recognizes that the most exciting research is rapidly evolving and is not available for general submission.  

To highlight timely, significant and novel work at Scientific Sessions, the Committee on Scientific Sessions Program has developed a series of late-breaking sessions that allow later submission and more rapid presentation.  

Late-Breaking Clinical Trials
Submission Period: June 1-22, 2009

Late-Breaking Basic Science Abstracts
Submission Period: Aug. 10-Sept. 2, 2009

Past late-breaking abstracts have been published as a part of the online Circulation or Circulation Research at ahajournals.org.