1. Poor prognosis follicular NHL (3 or more factors by Federico et al: erythrocyte sedimentation rate (ESR)> 30, male,> 60 years, high LDH> 2 extranodal areas, pathologic stage (PS) >2 or The International Prognostic Index (IPI) 3 or high lactate dehydrogenase (LDH) or micro Beta 2) failing to achieve CR with regimens including fludarabine and anti CD20 (cluster of differentiation antigen 20 ).