Low frequency of Epstein Barr virus association and high frequency of p53 overexpression in an Argentinean pediatric T-cell lymphoma series.
Pediatr Dev Pathol
; 12(1): 28-34, 2009.
Article
in En
| MEDLINE
| ID: mdl-18540692
T-cell non-Hodgkin's lymphomas (NHLs) represent 10% to 15% of all diagnosed lymphomas in Western countries. Various geographic frequencies of T-cell NHL have been documented, in part reflecting increased exposure to pathogenic factors such as Epstein-Barr virus (EBV). Our aims were to assess EBV and p53 expression in Argentine pediatric T-cell lymphoma and to correlate them with patients' survival. Epstein-Barr encoded RNAs (EBERs) in situ hybridization and LMP1 and p53 immunohistochemical staining were performed on formalin-fixed paraffin-embedded lymph node biopsies from 25 pediatric T-lymphoma patients. In 17 of 25 samples good-quality DNA was obtained, and EBER polymerase chain reaction was assessed to confirm in situ hybridization and immunohistochemical results. Epstein-Barr virus expression was found in 8.0% of cases. p53-positive staining was distributed in 92% of pediatric cases. Kaplan-Meier survival analysis showed that neither EBV nor p53 expression was statistically significantly associated with event-free survival. Our data showed a low frequency of EBV association with pediatric T-cell lymphoma. It seems that p53 plays an important role in proliferation in our studied population, since it is overexpressed in 92% of T-cell lymphoma cases.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Leukemia, T-Cell
/
Biomarkers, Tumor
/
Tumor Suppressor Protein p53
/
Epstein-Barr Virus Infections
Type of study:
Risk_factors_studies
Limits:
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
America do sul
/
Argentina
Language:
En
Journal:
Pediatr Dev Pathol
Year:
2009
Document type:
Article