title: The Expressions of P53, Bcl-2, and P-Glycoprotein and Prognostic Impact in Patients with Peripheral T-Cell Lymphoma (PTCL).
abstract: OBJECTIVE
  To define the expressions of p53, Bcl-2, and p-glycoprotein and prognostic impact in patients with peripheral T-cell lymphoma (PTCL).
  
  
  METHODS
  Adult patients with newly diagnosed as PTCL were reviewedfrom 2001 to 2012. Clinical parameters and outcome data were extracted The specimens were stained for p53, Bcl-2, and p-glycoprotein. The results were analyzed for association with disease stage, International Prognostic Index (IPI), Prognostic Index for T-cell lymphoma (PIT), overall response rate (ORR), and overall survival (OS).
  
  
  RESULTS
  Of eligible 159 patients (113 males, 46 females), median age was 53 years old The histological subtypes included peripheral T-cell lymphoma, not otherwise specified (PTCL, NOS) 35.8%, angioimmunoblastic T-cell lymphoma (AITL) 18.2%, extranodal NK/T-cell lymphoma (ENKL) 17.0%, subcutaneous panniculitis-like T-cell lymphoma (SPTCL) 12.6%, cutaneous T-cell lymphoma (CTCL) 11.3%, anaplastic large cell lymphoma (ALCL) 4.4%, and enteropathy-associated T-cell lymphoma (EATL) 0.6%. Tissue samples were obtainedfor analysis in 135 patients. P53, Bcl-2, and p-glycoprotein were positive in 87%, 49%, and 28%, respectively. Median OS was 25 months. The expressions of p53, Bcl-2, and p-glycoprotein were not significantly correlated with advanced stage, high prognostic scores, ORR, and OS. However Bcl-2 expression was statistically associated with histological subtypes. From Cox regression analyses, advanced stage, high prognostic scores, and histological subtypes were independent prognostic factors for OS.
  
  
  CONCLUSIONS
  The biomarker expressions varied in different types of PTCL and did not show any correlation with prognostic factors, ORR, or OS.
authors.forename: Jakrawadee
authors.initials: J
authors.lastname: Julamanee
authors.forename: Kanita
authors.initials: K
authors.lastname: Kayasut
authors.forename: Arnuparp
authors.initials: A
authors.lastname: Lekhakula
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000235:genetics*; D005260:Female; D015973:Gene Expression Regulation, Leukemic / Q000235:genetics*; D006801:Humans; D016411:Lymphoma, T-Cell, Peripheral / Q000235:genetics*; D008297:Male; D011379:Prognosis; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000235:genetics*; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*; D051028:bcl-2-Associated X Protein / Q000235:genetics*
chemical_list: D014408:Biomarkers, Tumor; D019253:Proto-Oncogene Proteins c-bcl-2; D016159:Tumor Suppressor Protein p53; D051028:bcl-2-Associated X Protein