Important Omission Dario Strbenac, University of Sydney 10 March 2013 The authors state that "Currently, HPeak is capable of analyzing ChIP-Seq data collected from human and mouse and can easily be extended to other species.", which is not true. Reading through the function 'realignfileread' in summary.pl, it is evident that the human chromosome names are hard-coded. For users who don't have Perl programming experience, it would be difficult to use for other species. It would be nice if reviewers could verify such broad statements before accepting articles for publication. Competing interests None.