| Clinical Significance of p53, c-erbB-2, Chromogranin A and PCNA in the Ampullary Carcinoma |
| Ki Hwan Kim, Sun Whe Kim, Woo Ho Kim, Yong Hyun Park |
1Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
2Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
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| ABSTRACT |
PURPOSE:
To determine the clinical significance of p53, c-erbB-2, chromogranin A (CgA), proliferating cell nuclear antigen (PCNA) expression in ampullary carcinoma, a retrospective study was performed.
MATERIALS AND METHODS:
The cases of 96 patients who underwent curative resection for ampullary carcinoma during the ten-year period (1986-95) were reviewed. And, using paraffin-embedded tumor tissues, immunohistochemical (IHC) staining for p53, c-erbB-2, CgA, and PCNA was performed.
RESULTS:
The overall five-year survival rate (5-YSR) for these 96 patients was 58%. With regard to TNM stage, the 5-YSR was 71% for stage I (n=36), 62% for stage II (n=29), and 39% for stage III (n=31), respectively. IHC expression rate was 17.6% for c-erbB-2, 19.2% for CgA, and 42.9% for p53. The relative proportion of labelling index of PCNA (<25%, 25-50%, >50%) was 30.8%, 25.3%, and 44.0%, respectively. The PCNA labelling index showedsignificant correlation with tumor size (p=0.032). The PCNA labelling index, c-erbB-2, CgA and p53 were not correlated to extent of invasion, lymph node metastasis, stage, or histologic type. CgA and c-erbB-2 expression and the PCNA labelling index thus had no prognostic value. With regard to p53, the 5-YSR of p53 negative cases was 68.6%; that of p53 positive cases was 47%, with significant difference (p=0.038).
CONCLUSION:
This result suggests that p53 expression is related to poor prognosis of ampullary carcinoma, and that c-erbB-2 and CgA expression, and the PCNA labelling index, are not significant prognostic factors. |
| Key words:
Ampullary carcinoma;p53 protein;Chromogranin A;c-erbB-2 gene;Proliferating cell nuclear antigen |
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