Amongst the multiple new pathways recently studied two have emerged as potentially important targets for new agents in lymphoma. These include the ubiquitin proteasome pathway and the biochemical reactions that control histone acetylation. The first two agents in each class to have been studied in lymphomas are: bortezomib and vorinostat. Bortezomib has been granted FDA approval for the treatment of mantle cell lymphoma and has established activity in a variety of B-cell lymphomas including follicular, marginal zone and diffuse large B-cell lymphoma. Vorinostat or SAHA (suberoylanilide hydroxamic acid) has been FDA approved for the treatment of refractory cutaneous T-cell lymphomas and has also shown activity in other lymphomas.