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  • Title: CD20 expression predicts survival in paediatric post-transplant lymphoproliferative disease (PTLD) following solid organ transplantation.
    Author: Orjuela MA, Alobeid B, Liu X, Siebert AL, Kott ER, Addonizio LJ, Morris E, Garvin JH, Lobritto SJ, Cairo MS.
    Journal: Br J Haematol; 2011 Mar; 152(6):733-42. PubMed ID: 21275950.
    Abstract:
    The prognostic role of CD20 expression and Epstein-Barr virus (EBV) positivity in post-transplant lymphoproliferative disease (PTLD) after solid organ transplantation (SOT) in paediatric patients is poorly understood. We retrospectively examined the relationship of CD20 and EBV with the time interval from SOT to PTLD diagnosis, and PTLD-related event-free (EFS) and overall survival (OS) in 45 consecutive PTLD patients (≤25 years) following SOT. These 45 paediatric SOT patients (28 heart, 11 liver, six kidney) were diagnosed with PTLD 45 months (mean; SD 43; range 4-153; median 24·5) after SOT, with PTLD diagnosis at 118 months (mean) (SD 77; range 14-287) of age. Of 40 evaluable tumours (11 monomorphic, 19 polymorphic, five early lesions, five rare subtypes), 32 (80%) had detectable EBV and 28 (70%) were classified as CD20(+) . Patients whose PTLD expressed CD20 or EBV had shorter intervals between SOT and PTLD onset (28 vs. 64 or 77 months for CD20 and EBV respectively) (P < 0·02), even after adjusting for age at SOT. Patients with CD20(+) tumours had higher 5-year PTLD-related EFS (83·7% vs. 28·6%, P < 0·001) and OS (95·8% vs. 56·3%, P = 0·01). EBV expression was unrelated to PTLD-related EFS or OS. CD20 expression is associated with timing of development of PTLD and predicts survival in PTLD diagnosed following paediatric SOT.
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