scholarly journals Cord Blood Transplantation for Multiple Myeloma: A Study from the Multiple Myeloma Working Group of the Japan Society for Hematopoietic Cell Transplantation

2015 ◽  
Vol 21 (7) ◽  
pp. 1291-1298 ◽  
Author(s):  
Koji Kawamura ◽  
Hiroyuki Takamatsu ◽  
Takashi Ikeda ◽  
Tsunehiko Komatsu ◽  
Nobuyuki Aotsuka ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Cord Blood ◽  
Cell Transplantation ◽  
Working Group ◽  
Hematopoietic Cell Transplantation ◽  
Cord Blood Transplantation ◽  
Hematopoietic Cell ◽  
Japan Society ◽  
Blood Transplantation

Establishment of Trichimerism in the Dog Leukocyte Antigen (DLA)-Identical Canine Hematopoietic Transplant Model.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 3193-3193
Author(s):  
Scott S. Graves ◽  
William Hogan ◽  
George E. Georges ◽  
Christian Kuhr ◽  
Razvan Diaconescu ◽  
...  
Keyword(s):  
Cord Blood ◽  
Cell Transplantation ◽  
Hematopoietic Cell Transplantation ◽  
Cord Blood Transplantation ◽  
Variable Number Tandem Repeat ◽  
Hematopoietic Cell ◽  
Solid Organ ◽  
Kidney Graft ◽  
Blood Transplantation ◽  
Cell Counts

Abstract Although hematopoietic cell transplantation is generally accomplished utilizing a single donor and recipient pair, multiple donors have been used to mediate engraftment, particularly in the case of low donor cell counts as in umbilical cord blood transplantation. The general engraftment outcome of HLA nonidentical cord blood transplantation is the predominance of one of the units over the other. Here we pose the question whether in the canine hematopoietic cell transplantation model, can we establish multiple donor chimerism using two DLA-identical donors and a single recipient. We identified 8 triplets of DLA-identical littermates by matching highly polymorphic microsatellite markers within DLA class I and class II regions and confirmed by DLA-DRB1 gene sequencing. The marrow recipients received 2 Gy total body irradiation followed by intravenous infusions of marrow cells from both donors 1 and 2. The median number of donor cells injected was 4.1 (range = 2.0–7.0) X 108 cells/kg. Post grafting immunosuppression consisted of cyclosporine (CSP) and mycophenolate mofetil (MMF) given for 35 and 28 days, respectively. The median time to hematological recovery (blood counts equivalent to pre-HCT levels) was 38 (range = 30–42) days. The degrees of chimerism were determined using variable number tandem repeat-polymerase chain reaction (VNTR-PCR) methods. As shown in the Table, sustained trichimerism occurred in 4 out of 8 dogs with engraftment for a period grater than 26 weeks. For G631, both donor grafts were rejected shortly following discontinuation of CSP and MMF. Dog G513 developed graft versus host disease (GvHD) which was successfully treated with a short course of CSP. Five dogs received kidney allografts from one of the respective HCT donors 6 months after HCT to assess donor specific immune tolerance. Chimerism Analysis of Dogs Receiving Marrow from Two Donors Duration of Engraftment in Weeks (% Chimerism) Recipient Donor 1 Donor 2 Recipient GVHD Accept Donor 1 Kidney Graft (wks) ND = not determined; [R] = rejection G158 >43 (5%) 37 (0%) [R] >43 (95%) No Yes (20) G193 >44 (72%) 16 (0%) [R] >44 (28%) No Yes (10) G362 >47 (28%) >47 (55%) >47 (17%) No Yes (16) G513 >47 (53%) >47 (22%) >47 (25%) Yes Yes (16) G551 >32 (35%) >32 (20%) >32 (45%) No ND G631 8 (10%) [R] 8 (12%) [R] 8 (>88%) No ND G643 >30 (28%) >30 (40%) >30 (23%) No Yes (4) G664 >26 (50%) 6 (2%) [R?] >26 (48%) No ND Kidney allografts were found to be essentially free of inflammation when assessed histologically on biopsy. Dog G643, was tested for immune function by a mixed leukocyte reaction and found to be competent against DLA nonidentical stimulator cells but nonresponsive against either of the donor stimulator cells. In summary, following nonmyeloablative conditioning, simultaneous administration of marrow stem cells from two DLA-identical littermates can result in trichimerism. Furthermore, immunological tolerance to multiple hematopoietic cell donors can include a solid organ graft from one of the marrow donors.

scholarly journals Haploidentical Hematopoietic Cell Transplantation Using Posttransplant Cyclophosphamide for Sézary Syndrome

2020 ◽  
Vol 13 (2) ◽  
pp. 1053-1058
Author(s):  
Madoka Kanda-Kato ◽  
Satoshi Yoshioka ◽  
Takayuki Ishikawa
Keyword(s):  
Cell Transplantation ◽  
Bacterial Infections ◽  
Hematopoietic Cell Transplantation ◽  
Cord Blood Transplantation ◽  
Infectious Complications ◽  
Hematopoietic Cell ◽  
Sézary Syndrome ◽  
Sezary Syndrome ◽  
Blood Transplantation ◽  
Unrelated Cord Blood

Patients with advanced-stage mycosis fungoides (MF) and Sézary syndrome (SS) have a poor prognosis. Allogeneic hematopoietic cell transplantation (HCT) is a potentially curative treatment option; however, since most patients with MF/SS are elderly, they often have difficulty in finding HLA-matched donors. In recent years, HCT from HLA-haploidentical donors (haplo-HCT) using posttransplant cyclophosphamide (PTCy) as graft-versus-host disease prophylaxis has been conducted for patients without HLA-matched donors. Infectious complications, particularly cutaneous bacterial infections, are common among patients with MF/SS. The lower incidence of severe infectious complications after haplo-HCT than after an unrelated cord blood transplantation could lead to lower transplant-related mortality. Here, we report on a patient with SS who was treated successfully with haplo-HCT with PTCy. The patient has remained in complete remission for more than 24 months.

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