Abstract:
:Allogeneic stem cell transplantation (SCT) is an established therapy for patients with relapsed lymphoma, but the role of positron emission tomography (PET) scanning preallogeneic and postallogeneic SCT is uncertain. We investigated whether pretransplantation PET status predicted outcome after allogeneic SCT and whether PET surveillance after transplantation provided additional information compared with computed tomography (CT) scanning. Eighty consecutive patients with lymphoma who received a reduced-intensity allogeneic SCT were entered onto a prospective trial. PET and CT scans were performed before transplantation and up to 36 months after transplantation. Forty-two patients were PET-positive before transplantation. Pretransplantation PET status had no significant impact on either relapse rate or overall survival. Thirty-four relapses were observed, of which 17 were PET-positive with a normal CT scan at relapse. Donor lymphocyte infusion (DLI) was administered in 26 episodes of relapse and was guided by PET alone in 14 patients. These findings suggest that, in contrast to autologous SCT, pretransplantation PET status is not predictive of relapse and survival after allogeneic SCT for lymphoma. Posttransplantation surveillance by PET detected relapse before CT in half of episodes, often allowing earlier administration of DLI in patients with recurrent lymphoma, and permitted withholding of potentially harmful DLI in those with PET-negative masses on CT scans.
journal_name
Bloodjournal_title
Bloodauthors
Lambert JR,Bomanji JB,Peggs KS,Thomson KJ,Chakraverty RK,Fielding AK,Kottaridis PD,Roughton M,Morris EC,Goldstone AH,Linch DC,Ell PJ,Mackinnon Sdoi
10.1182/blood-2009-11-255182subject
Has Abstractpub_date
2010-04-08 00:00:00pages
2763-8issue
14eissn
0006-4971issn
1528-0020pii
blood-2009-11-255182journal_volume
115pub_type
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