EFS and OS among patients with newly diagnosed MM according to Amp1q21 and adding thalidomide or not. A Kaplan-Meier analysis of EFS (left) and OS (right) is displayed in relation to no Amp1q21 (up to 2 copies of 1q21, n = 124) or Amp1q21 (3 or more copies of 1q21, n = 102) in patients treated with a regimen containing thalidomide and in relation to no Amp1q21 (n = 150) or Amp1q21 (n = 103) in patients treated with a regimen without thalidomide. Thal+ indicates patients treated with thalidomide; Thal-, patients treated without thalidomide.