Abstract:
:Posttransplant lymphoproliferative disorder (PTLD) after allogeneic hematopoietic cell transplantation (HCT) is usually donor derived, associated with Epstein-Barr virus (EBV), and of B-cell origin. T-cell PTLD (T-PTLD) after allogeneic HCT is extremely rare. Four of 1015 (0.39%) allogeneic HCT patients were diagnosed with T-PTLD; peripheral T-cell lymphoma-not otherwise specified, anaplastic large cell lymphoma, monomorphic T-cell PTLD and polymorphic PTLD with chronic active EBV infection-like symptoms. Three of the four patients developed T-PTLD within 6 months after HCT from HLA-mismatched unrelated donor. Three (75%) and 4 (100%) cases were positive for EBV-encoded small RNA in situ hybridization and EBV-DNA load in peripheral blood, respectively. Chimerism analysis showed that 75% of T-PTLD tissues (3/4) were recipient derived. T-PTLD was refractory to salvage chemotherapy and fatal in all four patients. Including the 10 patients in the literature, the median interval from HCT to diagnosis of T-PTLD was 5 months (range 1-72 months), 55% were negative for EBV, and 56% were recipient-derived. T-PTLD, which often occurred early after allogeneic HCT, was more likely to be EBV negative and recipient derived than B-cell PTLD after allogeneic HCT. Like T-PTLD after solid organ transplant, T-PTLD after allogeneic HCT demonstrated morphological heterogeneity and poor prognosis.
journal_name
Int J Hematoljournal_title
International journal of hematologyauthors
Kuno M,Ito A,Maeshima AM,Taniguchi H,Tanaka T,Inamoto Y,Kurosawa S,Kim SW,Fukuda Tdoi
10.1007/s12185-020-02890-1subject
Has Abstractpub_date
2020-08-01 00:00:00pages
193-199issue
2eissn
0925-5710issn
1865-3774pii
10.1007/s12185-020-02890-1journal_volume
112pub_type
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