1.
Graft-versus-host-disease prophylaxis with ATG or PTCY in patients with lymphoproliferative disorders undergoing reduced intensity conditioning regimen HCT from one antigen mismatched unrelated donor
Paviglianiti, A., Ngoya, M., Peña, M., Boumendil, A., Gülbas, Z., Ciceri, F., Bonifazi, F., Russo, D., Fegueux, N., Stolzel, F., et al
Bone marrow transplantation. 2024
Abstract
Post-transplant cyclophosphamide (PTCY) has been introduced as graft-versus-host disease (GvHD) prophylaxis in mismatched and matched unrelated hematopoietic cell transplant (HCT). However, data comparing outcomes of PTCY or ATG in patients undergoing a 1 antigen mismatched HCT for lymphoproliferative disease are limited. We compared PTCY versus ATG in adult patients with lymphoproliferative disease undergoing a first 9/10 MMUD HCT with a reduced intensity conditioning regimen from 2010 to 2021. Patients receiving PTCY were matched to patients receiving ATG according to: age, disease status at transplant, female to male matching, stem cell source and CMV serology. Grade II-IV acute GvHD at 100 day was 26% and 41% for the ATG and PTCY group, respectively (p = 0.08). Grade III-IV acute GvHD was not significantly different between the two groups. No differences were observed in relapse incidence, non-relapse mortality, progression-free survival, overall survival and GvHD-relapse-free survival at 1 year. The cumulative incidence of 1-year extensive chronic GvHD was 18% in the ATG and 5% in the PTCY group, respectively (p = 0.06). In patients with lymphoproliferative diseases undergoing 9/10 MMUD HCT, PTCY might be a safe option providing similar results to ATG prophylaxis. Due to the limited number of patients, prospective randomized trials are needed.
2.
Impact of t-cell depletion strategies on outcomes following hematopoietic stem cell transplantation for idiopathic aplastic anemia: A study on behalf of the european blood and marrow transplant (ebmt) saa working party
Samarasinghe, S., Clesham, K., Iacobelli, S., Sbianchi, G., Knol, C., Hamladji, R. M., Socie, G., Aljurf, M., Koh, M., Sengeloev, H., et al
American journal of hematology. 2018
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Abstract
We retrospectively analyzed the outcomes of 1837 adults and children with severe aplastic anemia (SAA) who underwent matched sibling donor (MSD) and matched unrelated donor (MUD) haemopoietic stem cell transplantation (HSCT) between 2000 and 2013. Patients were grouped by transplant conditioning containing either ATG (n=1283), alemtuzumab (n=261) or no serotherapy (NS) (n=293). The risks of chronic GvHD were significantly reduced when ATG or alemtuzumab were compared to no serotherapy (p=0.021 and p=0.003, respectively). Acute GVHD was significantly reduced in favor of alemtuzumab compared to ATG (P=0.012) and no serotherapy (p < 0.001). By multivariate analysis, when compared to ATG, alemtuzumab was associated with a lower risk of developing acute (OR 0.262; 95% CI 0.14-0.47; p<0.001) and chronic GVHD (HR 0.58; 95% CI 0.35 - 0.94; p=0.027). OS was significantly better in ATG and alemtuzumab patients compared with no serotherapy (p=0.010 and p=0.025). Our data shows inclusion of serotherapy in MSD and MUD HSCT for patients with SAA reduces chronic GVHD and provides a survival advantage over patients not receiving serotherapy. Notably, alemtuzumab reduced the risk of acute and chronic GvHD compared to ATG and indicates that alemtuzumab might be the serotherapy of choice for MSD and MUD transplants for SAA. This article is protected by copyright. All rights reserved.