Responsiveness of CPT-11 in Respect to hMLH1 and hMSH2 Protein Expression in the Primary Colorectal Cancer / Journal of the Korean Cancer Association, 대한암학회지
Cancer Research and Treatment
;
: 360-366, 2004.
Artigo
em Inglês
| WPRIM
| ID: wpr-176928
ABSTRACT
PURPOSE:
The aim of this study was to evaluate the responsiveness to CPT-11 with respect to hMLH1 and hMSH2 protein expressions in primary colorectal tumors. MATERIAL ANDMETHODS:
91 patients with colorectal cancer treated having undergone surgery and postoperative CPT-11-based adjuvant chemotherapy, between 1997 and 2002, were prospectively recruited. Tumor samples were immunohistochemically analyzed for the expressions of hMLH1, hMSH2, p53 and CEA proteins.RESULTS:
Of the 91 tumors, 6 (6.6%) and 4 (4.4%) showed loss of hMLH1 and hMSH2 protein expressions, respectively. The response rate of patients with tumors not expressing either hMLH1 or hMSH2 was higher than that of those expressing either of these proteins (p=0.026). Patients with tumors not expressing hMLH1 showed a significantly better response to CPT-11 (p=0.04). The responsiveness was not associated with the expressions of hMSH2, p53 or CEA. There were no correlations between drug toxicity and the expressions of hMLH1, hMSH2 or p53. The overall survival was better in patients responsive to CPT-11-based chemotherapy compared to non-responders.CONCLUSION:
The immunohistochemical determination of loss of hMLH1 and hMSH2 expressions may be used in determining the responsiveness to CPT-11-based chemotherapy. Our results suggest that hMLH1 protein expression may be a predictor for CPT-11 responsiveness in patients with colorectal cancer.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias Colorretais
/
Estudos Prospectivos
/
Quimioterapia Adjuvante
/
Tratamento Farmacológico
/
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos
Tipo de estudo:
Estudo observacional
/
Fatores de risco
Limite:
Humanos
Idioma:
Inglês
Revista:
Cancer Research and Treatment
Ano de publicação:
2004
Tipo de documento:
Artigo
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