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High Epidermal Growth Factor Receptor Expression in Metastatic Colorectal Cancer Lymph Nodes May Be More Prognostic of Poor Survival Than in Primary Tumor

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机构: [1]Univ Washington, Div Med Oncol, Fred Hutchinson Canc Res Ctr, Seattle, WA 98109 USA [2]Sun Yat Sen Univ, Dept Med Oncol, Ctr Canc, Guangzhou 510275, Guangdong, Peoples R China [3]Sun Yat Sen Univ, Dept Colorectal Surg, Gastrointestinal Hosp, Guangzhou 510275, Guangdong, Peoples R China [4]Sun Yat Sen Univ, Dept Expt Sci, Affiliated Hosp 1, Guangzhou 510275, Guangdong, Peoples R China
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关键词: epidermal growth factor receptor colorectal cancer tissue microarray overall survival

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Objectives: High epidermal growth factor receptor (EGFR) expression in the primary tumor predicts poor survival in colorectal cancer. However, EGFR expression may be discordant in primary tumor versus nodal or distant metastasis. We evaluated prognostic values of high EGFR expression in nodal metastasis versus primary tumor tissue. Methods: Tissue microarrays from 94 surgically resected colorectal primary tumors were analyzed for EGFR expression using immunohistochemistry along with 49 paired positive metastatic nudes and 19 distant metastases. Proportional odds regression and log-rank tests described the association of tumor stage and survival with EGFR, dichotomized to low expression (0, 1) versus high expression (2, 3). Results: High EGFR expression rates in the primary turner, metastatic lymph node and distant metastases were 18%, 24%, and 21%, respectively. The concordance rate was 71% for stage III/IV patients. High EGFR expression in primary tumor was associated with higher turner stage (odds ratio 4.3, P = 0.005) and thus predicted poor Survival (P = 0.046). High EGFR expression in the primary tumor was not associated with survival in patients with stage III or IV disease, whereas high EGFR expression in metastatic lymph nodes was associated with relatively poor survival (P = 0.005), for both stage III (P = 0.002) and stage IV patients (P = 0.014). Concordant high EGFR expression in primary tumor and lymph nodes conferred added risk of death (P = 0.003), conversely, concordant EGFR-negative primary tumor and lymph node was protective (P = 0.097). Conclusions: EGFR expression may be discordant among primary, nodes, and metastases in colorectal cancer. High EGFR expressions in metastatic lymph nodes seem to be more accurate in predicting Survival than in primary or metastatic tissues.

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出版当年[2009]版:
大类 | 4 区 医学
小类 | 4 区 肿瘤学
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 肿瘤学
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第一作者机构: [2]Sun Yat Sen Univ, Dept Med Oncol, Ctr Canc, Guangzhou 510275, Guangdong, Peoples R China [3]Sun Yat Sen Univ, Dept Colorectal Surg, Gastrointestinal Hosp, Guangzhou 510275, Guangdong, Peoples R China
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通讯机构: [1]Univ Washington, Div Med Oncol, Fred Hutchinson Canc Res Ctr, Seattle, WA 98109 USA
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