Comment on

• Serum lactate dehydrogenase predicts for overall survival benefit in patients with metastatic renal cell carcinoma treated with inhibition of mammalian target of rapamycin.

  Armstrong AJ, George DJ, Halabi S. Armstrong AJ, et al. J Clin Oncol. 2012 Sep 20;30(27):3402-7. doi: 10.1200/JCO.2011.40.9631. Epub 2012 Aug 13. J Clin Oncol. 2012. PMID: 22891270
• Prognostic and predictive markers in metastatic renal cell carcinoma.

  Khattak MA, Bakr F, Krzystanek M, Szallasi Z, Gerlinger M, Santos C, Swanton C, Pickering LM, Gore ME, Larkin JM. Khattak MA, et al. J Clin Oncol. 2013 Mar 1;31(7):971-2. doi: 10.1200/JCO.2012.46.9353. Epub 2013 Jan 7. J Clin Oncol. 2013. PMID: 23295806 No abstract available.