Clinicopathologic analysis of CD10+ and CD10- diffuse large B-cell lymphoma. Identification of a high-risk subset with coexpression of CD10 and bcl-2.
We analyzed 53 cases of diffuse large B-cell lymphoma (DLBCL) to determine whether expression of CD10 is a relevant biologic parameter. Tumor morphologic features were assessed semiquantitatively. Bcl-2 protein expression was studied by immunohistochemical analysis. The presence or absence of CD10 by flow cytometry was correlated with clinical and pathologic characteristics. CD10+ (23 cases) and CD10- (30 cases) DLBCLs were indistinguishable based on age, sex, extranodal presentation, B symptoms, clinical stage, morphologic features, or bcl-2 expression. However, cases with a CD10+ phenotype showed a significantly lower rate of complete remission. Cases expressing bcl-2 showed trends toward a lower rate of complete remission and poorer overall survival. Examination of CD10 and bcl-2 interaction revealed that the prognostic effects for both of these antigens were due to a subset of CD10+ bcl-2-positive cases. Compared with cases expressing one or neither of these markers, patients with dual-positive tumors had a poorer complete response rate to initial therapy and strikingly worse overall survival. While CD10+ and CD10- DLBCLs are similar with regard to a variety of clinical and pathologic features, CD10 and bcl-2 coexpressing tumors are an extremely high-risk subset based on response to therapy and overall survival.
Xu
Y
Y
Dept of Pathology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-9072, USA.
McKenna
R W
RW
Molberg
K H
KH
Kroft
S H
SH
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D016130:Immunophenotyping; D016393:Lymphoma, B-Cell / Q000276:immunology* / Q000378:metabolism / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000188:drug therapy / Q000276:immunology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D015260:Neprilysin / Q000032:analysis*; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000032:analysis; D012074:Remission Induction; D015996:Survival Rate
D019253:Proto-Oncogene Proteins c-bcl-2; D015260:Neprilysin