This article summarizes the different clinical results of the IFM trials: h
igh dose therapy supported with autologous stem cells improves survival, me
lphalan 200 mg/m(2) is the best preparative regimen, unpurged peripheral bl
ood stem cells are the recommended source of stem-cells to support high dos
e therapy, tandem transplants significantly improve survival. However, desp
ite these encouraging results, long term survival needs inovative strategie
s evaluated with the current IFM 99 protocol.