In November 2016, I was a panelist at the American Journal of Managed Care 4th annual conference, "Patient Centered Oncology Care." While I wasn't able to attend the whole conference, I didn't quite have the impression conveyed by their just-released news summary "Diagnostic Testing is a Wild West of Unknowns, Perils." The online conference report is here, with a publication date of March 2, 2016.
The same week, JAMA published an opinion piece by John Ionnanidis and two Harvard colleagues that the impact of some genetic variants may be overinterpreted or overstated - Manrai et al., online here. Related, Feero's January JAMA editorial on clinical validity of arrythmia-related genetic variations, here. Ionnanidis is best known for his 2005 article, "Why Most Published Research Findings are False" (open access, here.) He has been profiled a number of times, e.g. the Atlantic 2010, here, and at Mendelspod in 2016, here.