Abstract
Background
International guidelines for Pneumocystis jirovecii pneumonia (PJP) prevention recommend prophylaxis for ≥6 months following allogeneic
hematopoietic cell transplantation, and longer in patients with graft-versus-host
disease (GVHD) or on immunosuppressive therapy (IST). These recommendations are based
on cohorts of patients who did not routinely receive anti-thymocyte globulin (ATG)
for GVHD prophylaxis.
Methods
We performed a retrospective chart review of 649 patients, all of whom received ATG
as part of GVHD prophylaxis.
Results
The cumulative incidence of definite PJP was 3.52% at both 3 and 5 years (median follow
up, 1648 days for survivors). PJP occurred in 13 non-GVHD patients between days 207
and 508, due in part to low CD4 T-cell counts (<200 CD4 T cells/µL). PJP occurred
in eight GVHD patients between days 389 and 792, due in part to non-adherence to PJP
prophylaxis guidelines (discontinuation of PJP prophylaxis at <3 months after discontinuation
of IST). Breakthrough PJP infection was not observed in patients receiving prophylaxis
with cotrimoxazole, dapsone or atovaquone, whereas three cases were observed with
inhaled pentamidine.
Discussion
In conclusion, for non-GVHD patients receiving ATG-containing GVHD prophylaxis, 6 months
of PJP prophylaxis is inadequate, particularly if the CD4 T-cell count is <200 cells/µL
or if there is a high incidence of PJP in the community. For patients with GVHD receiving
ATG-containing GVHD prophylaxis, continuing PJP prophylaxis until ≥3 months post-discontinuation
of IST is important. Cotrimoxazole, dapsone and atovaquone are preferred over inhaled
pentamidine.
Keywords
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Article Info
Publication History
Published online: December 27, 2019
Accepted:
November 12,
2019
Received:
July 19,
2019
Identification
Copyright
Crown Copyright © 2019. Published by Elsevier Inc. on behalf of International Society for Cell and Gene Therapy. All rights reserved.


