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A third study by the PETHEMA group (23) included 25 patients in the auto-RIC when compared to 85 in the auto�Cauto group. Patients were below 70?yrs of age and they had all failed CR or near-CR after a first autograft. The conditioning regimen was melphalan?+?fludarabin. At the time of publication, the median time for PFS and OS had not been reached in the auto-RIC allo transplant group, while it was 31?months and 58?months in the auto�Cauto group, respectively. The HOVON study (39) includes patients http://www.selleckchem.com/products/pexidartinib-plx3397.html results, there are so far no significant differences in event free and OS between the groups, which are 39% vs. 34% and 56% vs. 63% at 4?yr in the auto-RICallo and auto-thalidomide groups, respectively. The EBMT study comprising 108 patients in the auto�Callo group and 249 in the auto group is closed for entry. Patients are below 70?yr of age and the conditioning regimen was TBI 2?Gy?+?fludarabin. At a median follow-up time of 60?months, the CR rate is 43% vs. 38% the PFS 35% vs. 18% and the OS 65% vs. 57% at 60?months in the auto-RIC and auto-auto groups, respectively. The final analysis is ongoing. Thus, so far, three of five studies have shown either significantly or a tendency for better PFS and OS with auto-RIC. One study �C not yet closed �C has shown no significant difference in either parameter, and one has shown a tendency for poorer outcome with RIC-allotransplantation. There are certain differences in the selection http://www.selleck.cn/products/nlg919.html of patients as well as in the treatment regimens in these five studies. The best result for RIC auto was obtained in the Bruno study, using only TBI 2?Gy without further immunosuppression in the conditioning regimen, while the worst result http://www.selleckchem.com/products/bmn-673.html was obtained in the IFM study, using busulfan in the conditioning regimen as well as ATG for immunosuppression. Both the IFM and the PETHEMA studies used only high-risk patients but with somewhat different type of inclusions. The final analysis of the HOVON as well as the EBMT study will give a better answer to the question if the RIC-allo modality should be further pursued. However, it appears that the auto-RIC procedure has a place in the treatment of multiple myeloma but so far, the best selection of patients and the best conditioning modality remains to be determined. Donor lymphocyte transfusion (DLI) to treat relapse following allogeneic transplantations may induce about 30% responses in relapsed patients that may last for more than 2?yr (40�C42). Donor lymphocyte transfusion may also be used to improve the quality of response in partially responding patients (43�C45) It frequently causes GVHD, and the response rate and duration is often associated with chronic GVHD.