Journal List > J Korean Breast Cancer Soc > v.1(1) > 1076556

Kim, Suh, Park, Choi, Oh, Cho, Kim, Jung, and Lee: The Expression of c-erbB-2 and CD44 Gene in Breast Cancer


There are some controversial opinions on the prognostic value of metastasis-associated tumor markers in breast cancer. Out of them, the over expression of c-erbB-2 proto-oncogene or CD44 gene has been debated on their activities in promoting metastatic potential. To determine the relationship between expression of both genes, and, clinicopathological parameters and disease outcomes including relapse and survival, 48 archival paraffin-embedded breast-cancer tissues were stained using monoclonal antibody against each gene product by immunohistochemical staining method, and the result was analyzed. The positive expression rates of c-erbB-2 and CD44 genes were 45.8% and 18.8%, respectively. The co-expression rates of both positives and both negatives were 14.6% and 50.0%, respectively. Except the statistically significant positive correlation between CD44 and tumor size (P=0.003), the expression rates of c-erbB-2 or CD44 had no significant relationship with tumor size, stage, lymph node status, and disease recurrence (p>0.05). In the positive expression cases for CD44, disease-free survival (DFS) and overall survival (OS) in months were shorter than the negative ones (53±8 vs. 64±5 and 67±8 vs. 77±5 S.E.). And, the c-erbB-2 positive cases had longer as than the negative ones (78±6 vs. 71±6). The OS of positive co-expression cases with the c-erbB-2 and CD44 was shorter than that of one-gene expression ones (66±6 vs. 75±7). So the as result observed in the expression of c-erbB-2 alone was reversed in the co-expression study. Though these results had no statistically significant level (p>0.05), we suggest a question that if there is any interaction or dependency between c-erbB-2 and CD44 expression in a view of disease process including as. Finally, further randomized controlled studies are advisable for the reproducible and significant results.

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