Dieter et. al. (2017) BioRxiv, 181255. http://www.biorxiv.org/content/early/2017/08/28/181255
On 02 August 2017, a Nature article claimed a major breakthrough in CRISPR genome editing. Researchers from around the world, including the United States, announced that they had successfully corrected viable human embryos heterozygous for the MYBPC3 mutation that results in heart disease, without mosaicism. Recently, the results of this article have been called into question with the publishing of a BioRxiv article. The authors of the new paper identify other possible mechanisms that could have caused the observed results and suggest additional experiments to effectively prove CRISPR gene editing.