Response to Caravita di Toritto and Rago.

Dear Editor, We have with interest read the response by Dr. Caravita di Toritto and Dr. Rago to our recently published article entitled "Conditioning with melphalan (Mel) 200 mg/m SP 2 sp and subsequent autologous stem cell transplantation (ASCT) improves progression-free survival (PFS) and overall survival (OS) in elderly multiple myeloma (MM) patients compared to standard of care". 9 Badros A, Barlogie B, Siegel E. Results of autologous stem cell transplant in multiple myeloma patients with renal failure. Autologous stem cell transplantation in multiple myeloma patients over 70 years: a GIMEMA Lazio working group experience in a retrospective case-control study. [Extracted from the article]