In Reply: We agree with Dr Robb and colleagues that well-annotated data sets should have detailed information regarding their tissue banking methods and respective standard operating procedures available for others to examine and possibly follow. This is critical, and we examined multiple sources (institutions) of data to ascertain the reliability and nature of the samples. We support initiatives in promoting and centralizing such biobanking strategies.1 However, such initiatives are recent and, while important, should not preclude the analysis of already published data from reputable institutions, especially if they involve a formal communication regarding the quality of the data and biobanking procedures, as was the case in the data used in our article.
Acharya CR, Potti A. Documenting Biospecimen Conditions in Reports of Studies—Reply. JAMA. 2008;300(6):650-651. doi:10.1001/jama.300.6.651