방사선 치료를 받은 코인두암의 생체분자적 예후 인자를 찾기 위한 면역조직화학염색 연구 Immunohistochemical Study to Evaluate the Prognostic Significance of Four Biomolecular Markers in Radiotherapy of Nasopharyngeal Carcinoma원문보기
목 적: 방사선 치료를 받은 코인두암 환자의 치료 전 조직을 면역조직화학염색하여 생체분자적 예후인자를 찾고자 하였다. 대상 및 방법: 1998년부터 2006년까지 방사선 치료를 받은 코인두암환자는 68명이었다. 이중 38명의 환자에서 면역조직화학염색을 위한 파라핀 블록을 찾을 수 있었다. 전체 환자 중 31명은 미분화암종이었고, 7명은 편평세포암종이었다. 전체 환자의 84%가 2002 American Joint Committee on Cancer Stage III or IV 환자였다. 전체 환자의 파라핀 블록을 이용하여 Met, COX-2, epidermal growth factor receptor (EGFR), nm23-H1에 대해 면역조직화학염색을 시행하였다. 결 과: 전체 환자의 중앙 추적 기간은 30개월이었고 생존 환자의 중앙 추적 기간은 39개월이었다. 높은(${\geq}50%$) Met 발현을 보인 환자들의 5년 생존율은 48%, 낮은 Met 발현을 보인 환자들의 5년 생존율은 84%로 이는 통계적으로 유의한 차이를 보였다(p=0.02). Met 발현 정도는 다변량 분석에서도 유의한 인자로 분석되었다(p=0.01). Met 발현은 종양의 병기, 성별, 나이, 항암제나 방사선 치료에 대한 반응 정도와 상관관계를 보이지 않았다. Met 발현 정도는 COX-2 발현과 중등도의 상관관계를 보였으나(Pearson coefficient 0.496, p<0.01), COX-2 발현은 전체생존율에 영향을 미치지 않았다. 본 연구에서는 nm23-H1이나 EGFR의 발현은 예후인자가 아닌 것으로 분석되었다. 결 론: 방사선치료를 받은 코인두암에서, 높은(${\geq}\;50%$) Met 발현은 전체생존율에 영향을 미치는 독립적인 예후인자일 가능성이 있다.
목 적: 방사선 치료를 받은 코인두암 환자의 치료 전 조직을 면역조직화학염색하여 생체분자적 예후인자를 찾고자 하였다. 대상 및 방법: 1998년부터 2006년까지 방사선 치료를 받은 코인두암환자는 68명이었다. 이중 38명의 환자에서 면역조직화학염색을 위한 파라핀 블록을 찾을 수 있었다. 전체 환자 중 31명은 미분화암종이었고, 7명은 편평세포암종이었다. 전체 환자의 84%가 2002 American Joint Committee on Cancer Stage III or IV 환자였다. 전체 환자의 파라핀 블록을 이용하여 Met, COX-2, epidermal growth factor receptor (EGFR), nm23-H1에 대해 면역조직화학염색을 시행하였다. 결 과: 전체 환자의 중앙 추적 기간은 30개월이었고 생존 환자의 중앙 추적 기간은 39개월이었다. 높은(${\geq}50%$) Met 발현을 보인 환자들의 5년 생존율은 48%, 낮은 Met 발현을 보인 환자들의 5년 생존율은 84%로 이는 통계적으로 유의한 차이를 보였다(p=0.02). Met 발현 정도는 다변량 분석에서도 유의한 인자로 분석되었다(p=0.01). Met 발현은 종양의 병기, 성별, 나이, 항암제나 방사선 치료에 대한 반응 정도와 상관관계를 보이지 않았다. Met 발현 정도는 COX-2 발현과 중등도의 상관관계를 보였으나(Pearson coefficient 0.496, p<0.01), COX-2 발현은 전체생존율에 영향을 미치지 않았다. 본 연구에서는 nm23-H1이나 EGFR의 발현은 예후인자가 아닌 것으로 분석되었다. 결 론: 방사선치료를 받은 코인두암에서, 높은(${\geq}\;50%$) Met 발현은 전체생존율에 영향을 미치는 독립적인 예후인자일 가능성이 있다.
Purpose: We performed an immunohistochemical study with pre-treatment biopsy specimens to evaluate the prognostic significance of four biomolecular markers which can be used as a predictive assay for radiotherapy (RT) treatment of nasopharyngeal carcinoma (NPC). Materials and Methods: From January 1...
Purpose: We performed an immunohistochemical study with pre-treatment biopsy specimens to evaluate the prognostic significance of four biomolecular markers which can be used as a predictive assay for radiotherapy (RT) treatment of nasopharyngeal carcinoma (NPC). Materials and Methods: From January 1998 through December 2006, 68 patients were histologically diagnosed as non-metastatic NPC and treated by RT. Only 38 patients had the paraffin block for the immunohistochemical study. Thirty-one patients had undifferentiated carcinoma and 7 patients had squamous cell carcinoma. Thirtytwo patients (84%) had advanced stage NPC (2002 AJCC Stage III~IV). Immunohistochemical staining was performed for Met, COX-2, nm23-H1, and epidermal growth factor receptor (EGFR) expression using routine methods. Results: The median follow-up time was 30 months (range, 11 to 83 months) for all patients, and 39 months (range, 19 to 83 months) for surviving patients. The 5-year overall survival (OS) rate of the patients with high Met extent (${\geq}50%$) was significantly lower than that of the patients with low Met extent (48% vs. 84%, p=0.02). In addition, Met extent was also a significant prognostic factor in multivariate analysis (p=0.01). No correlation was observed between Met extent and T stage, N stage, stage group, gender, age, and the response to chemotherapy or RT. Met extent showed moderate correlation with COX-2 expression (Pearson coefficient 0.496, p<0.01), but COX-2 expression did not affect OS. Neither nm23-H1 or EGFR expression was a prognostic factor for OS in this study. Conclusion: High Met extent (${\geq}50%$) might be an independent prognostic factor that predicts poor OS in NPC treated with RT.
Purpose: We performed an immunohistochemical study with pre-treatment biopsy specimens to evaluate the prognostic significance of four biomolecular markers which can be used as a predictive assay for radiotherapy (RT) treatment of nasopharyngeal carcinoma (NPC). Materials and Methods: From January 1998 through December 2006, 68 patients were histologically diagnosed as non-metastatic NPC and treated by RT. Only 38 patients had the paraffin block for the immunohistochemical study. Thirty-one patients had undifferentiated carcinoma and 7 patients had squamous cell carcinoma. Thirtytwo patients (84%) had advanced stage NPC (2002 AJCC Stage III~IV). Immunohistochemical staining was performed for Met, COX-2, nm23-H1, and epidermal growth factor receptor (EGFR) expression using routine methods. Results: The median follow-up time was 30 months (range, 11 to 83 months) for all patients, and 39 months (range, 19 to 83 months) for surviving patients. The 5-year overall survival (OS) rate of the patients with high Met extent (${\geq}50%$) was significantly lower than that of the patients with low Met extent (48% vs. 84%, p=0.02). In addition, Met extent was also a significant prognostic factor in multivariate analysis (p=0.01). No correlation was observed between Met extent and T stage, N stage, stage group, gender, age, and the response to chemotherapy or RT. Met extent showed moderate correlation with COX-2 expression (Pearson coefficient 0.496, p<0.01), but COX-2 expression did not affect OS. Neither nm23-H1 or EGFR expression was a prognostic factor for OS in this study. Conclusion: High Met extent (${\geq}50%$) might be an independent prognostic factor that predicts poor OS in NPC treated with RT.
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제안 방법
The aim of the study was to explore the prognostic value of Met, COX-2, nm23-H1 and EGFR. The primary end points were overall survival (OS) and progression-free survival (PFS).
대상 데이터
Table 2 describes the treatment details. Thirty-two of 38 patients were treated with induction chemotherapy with two or three cycles of cisplatin based regimen followed by either radiotherapy alone (19 patients) or concurrent chemoradiotherapy with cisplatin (13 patients). Since May 2004, all patients were treated with intensity modulated radiotherapy (IMRT) using integrated boost simultaneously.
데이터처리
The probability of survival was calculated using the Kaplan-Meier method. The log-rank test was used to evaluate the prognostic factors of the survival rate. Multivariate analysis was performed using Cox’s proportional hazard model.
Multivariate analysis was performed using Cox’s proportional hazard model. The statistical test was a two-sided test and was performed with SPSS ver. 12.0 (SPSS Inc., Chicago, IL, USA).
이론/모형
The log-rank test was used to evaluate the prognostic factors of the survival rate. Multivariate analysis was performed using Cox’s proportional hazard model. The statistical test was a two-sided test and was performed with SPSS ver.
The PFS was calculated from the last day of RT to the day of diagnosis of loco-regional and/or distant relapse in completely responded patients and progression of disease in partially responded patients. The probability of survival was calculated using the Kaplan-Meier method. The log-rank test was used to evaluate the prognostic factors of the survival rate.
성능/효과
In conclusion, high Met expression might be an independent prognostic factor that predicts poor OS in NPC. Other biomolecular markers are under evaluation to reveal their impact on the prognosis.
Overall survival according to Met expression. The 5-year overall survival rate was 48% in the patients with high Met extent and 84% in those with low Met expression (p=0.02).
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