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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biol+Blood+Marrow+Transplant
2015 ; 21
(9
): 1663-78
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Immunotherapy with Donor T Cells Sensitized with Overlapping Pentadecapeptides
for Treatment of Persistent Cytomegalovirus Infection or Viremia
#MMPMID26028505
Koehne G
; Hasan A
; Doubrovina E
; Prockop S
; Tyler E
; Wasilewski G
; O'Reilly RJ
Biol Blood Marrow Transplant
2015[Sep]; 21
(9
): 1663-78
PMID26028505
show ga
We conducted a phase I trial of allogeneic T cells sensitized in vitro against a
pool of pentadecapeptides (15-mer peptides) spanning the sequence of CMVpp65 for
adoptive therapy of 17 allogeneic hematopoietic cell transplant recipients with
cytomegalovirus (CMV) viremia or clinical infection persisting despite prolonged
treatment with antiviral drugs. All but 3 of the patients had received T
cell-depleted transplants without graft-versus-host disease (GVHD) prophylaxis
with immunosuppressive drugs after transplantation. The CMVpp65-specific T cells
(CMVpp65CTLs) generated were oligoclonal and specific for only 1 to 3 epitopes,
presented by a limited set of HLA class I or II alleles. T cell infusions were
well tolerated without toxicity or GVHD. Of 17 patients treated with transplant
donor (n = 16) or third-party (n = 1) CMVpp65CTLs, 15 cleared viremia, including
3 of 5 with overt disease. In responding patients, the CMVpp65CTLs infused
consistently proliferated and could be detected by T cell receptor V? usage in
CMVpp65/HLA tetramer + populations for period of 120 days to up to 2 years after
infusion. Thus, CMVpp65CTLs generated in response to synthetic 15-mer peptides of
CMVpp65 are safe and can clear persistent CMV infections in the
post-transplantation period.