The Significance of VEGF Expression in Stage II Carcinoma of Uterine Cervix Treated with Definitive Radiotherapy

자궁경부암 환자의 근치적 방사선치료 시 VEGF 발현의 임상적 의의

  • Park Won (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Choi Yoon-La (Department of Pathology, Samsung Medical Center, Sungkyunkwan Univesity School of Medicine) ;
  • Huh Seung-Jae (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Yoon Sang-Min (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Park Young-Je (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Nam Hee-Rim (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Ahn Yong-Chan (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Lim Do-Hoon (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Park Hee-Chul (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 박원 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 최윤라 (성균관대학교 삼성서울병원 병리학과) ;
  • 허승재 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 윤상민 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 박영제 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 남희림 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 안용찬 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 임도훈 (성균관대학교 삼성서울병원 방사선종양학과) ;
  • 박희철 (성균관대학교 삼성서울병원 방사선종양학과)
  • Published : 2006.03.01

Abstract

Purpose: We wanted to determine the clinical characteristics and prognosis according to the VEGF expression in stage II cervical carcinoma patients treated with definitive radiotherapy. Materials and Methods: We enrolled 31 patients who were diagnosed with cervical cancer from 1995 to 2003 at Samsung Medical Center and their paraffin block tissue samples were available for study. The median age of the patients was 65 years. The mean tumor size was 4.1 cm $(range:\;1.2{\sim}8.2cm)$. Seven patients (22.6%) were suspected of having pelvic lymph node metastasis. An external beam irradiation dose of 45-56.4 Gy was administered to the whole pelvis with a 15 MV linear accelerator, and an additional 24 Gy was given to point A by HDR intracavitary brachytherapy. VEGF staining was defined as positive when more than 10% of the tumor cells were stained. The median follow-up duration was 58 months. Results: A positive VEGF expression was observed in 21 patients (67.7%), There was no significant correlation between the VEGF expression and pelvic lymph node metastasis, tumor size and the response of radiotherapy. During follow-up, 7 patients had recurrence. The complete response rate was not significant between the VEGF(-) and VEGF(+) tumors. However, the VEGF(+) tumors showed a significantly higher recurrence rate in comparison with the VEGF(-) tumors (p=0.040), The three year disease-free survival rates were 100% and 66.7%, respectively, for patients with VEGF(-) or VEGF(+) tumor (p=0.047), Conclusion: The VEGF expression was a significant factor for recurrence and disease-free survival. However, the significance of the VEGF expression is still controversial because of the various definitions of VEGF expression and the mismatches of the clinical data in the previous studies.

목적 : 종양 내 VEGF의 발현이 방사선저항성과 관련이 있고, 자궁경부암에서 VEGF 발현이 예후와 관련된다는 보고들이 있다. 본 연구에서는 자궁경부암 환자에서 근치적 방사선치료를 시행받은 환자를 대상으로 후향적으로 VEGF 발현에 따른 임상적 특성 및 환자 예후와 연관 관계를 알아보고자 하였다. 대상 및 방법 : 1995 년 9 월부터 2003 년 4 월까지 삼성서울병원에서 자궁경부의 편평상피세포암 FIGO 병기 II로 진단받고 근치적 방사선치료가 시행된 환자 중 면역조직학 검사를 위한 파라핀 블록이 유용한 31 명 환자를 대상으로 하였다. 대상환자들의 연령 분포는 $38{\sim}83$세 (중간값 65세)였다 종양의 크기는 $1.2{\sim}8.2cm$( 평균 4.1cm)였고, 골반 내 림프절 전이는 7예 (22.6%) 에서 있었다 방사선치료는 15 MV 광자선으로 매일 1.8 Gy씩 주 5회, 전골반 내 조사가 시행되었는데 외부방사선치료 선량은 $45{\sim}56.4 Gy$ ( 중간값 50.4 Gy) 였고, 강내치료는 point A 에 1회 4Gy씩 주 2회, 총 24 Gy 조사되었다. 방사선치료 기간은 $48{\sim}67$일 (중간값 53 일) 이었다. VEGF 면역조직학 검사상 양성은 종양세포 중 VEGF 분포가 10% 이상인 경우로 정하였다. 대상환자들의 추적관찰기간은 $12{\sim}119$개월 (중간값 58 개월) 이었다. 결과 : VEGF 양성인 경우는 21 예 (67.7%)였다 VEGF 발현에 따른 골반 내 림프절 전이 유무, 종양 크기와 방사선 치료에 따른 관해 정도의 유의한 차이는 없었다. 전체 환자 중 7 예에서 재발이 있었는데 국소재발, 원격전이, 국소 재발과 원격전이가 동반된 경우가 각각 3예, 3예, 1예였다. VEGF 음성과 양성인 경우에 방사선치료 후 완전관해율 이 각각 90%와 81%로 의의있는 차이는 없었지만, 재발은 모두 VEGF 양성인 환자에서 발생하여 통계적으로 의의 있는 차이를 보였다 (p=0.040). 3년 무병생존율은 77.4%였는데, VEGF 음성과 양성인 경우 각각 100% 와 66.7%로 차이가 있었다 (p=0.047). 결과: 자궁경부암 lGO 병기 2기 환자의 근치적 방사선치료 시 종양 내 VEGF 발현 유무는 재발률과 무병생존율에 영향을 주는 인자였다. 그러나 VEGF 과발현에 대한 각 문헌마다 정의가 다르고, 문헌에 보고되는 환자수가 많지 않아 향후 VEGF 발현이 자궁경부암 환자의 예후인자로 결정되기 위해서는 대규모 연구가 필요하겠다.

Keywords

References

  1. 2002 Annual Report of the Korea Central Cancer Registry, Korea Central Cancer Registry
  2. Huh SJ. Kim BK, Lim DH, et al. Treatment results of radical radiotherapy in uterine cervix cancer. J Korean Soc Ther Radiol Oncol 2002;20:237-245
  3. West CM. Davidson SE, Burt PA. Hunter RD. The intrinsic radiosensitivity of cervical carcinoma: correlations with clinical data. lnt J Radiat Oncol Biol Phys 1995;31:841-846 https://doi.org/10.1016/0360-3016(94)00508-7
  4. Hockel M. Schlenger K, Aral B. Mitze M. Schaffer U, Vaupel P. Association between tumor hypoxia and malignant progression in advanced cancer of the uterine cervix. Cancer Res 1996;56:4509-4515
  5. Hockel M. Knoop C. Schlenger K, et al. Intratumoral pO2 predicts survival in advanced cancer of the uterine cervix. Radiother Oncol 1993;26:45-50 https://doi.org/10.1016/0167-8140(93)90025-4
  6. Fyles AW, Milosevic M. Wong R, et al. Oxygenation predicts radiation response and survival in patients with cervix cancer. Radiother Oncol 1998;48: 149-156 https://doi.org/10.1016/S0167-8140(98)00044-9
  7. Shweiki D, Neeman M, Itin A, Keshet E. Induction of vascular endothelial growth factor expression by hypoxia and by glucose deficiency in multicell spheroids: implications for tumor angiogenesis. Proc Natl Acad Sci USA 1995;92:768-772 https://doi.org/10.1073/pnas.92.3.768
  8. Leung DW, Cachianes G, Kuang WJ, Goeddel DV, Ferrara N. Vascular endothelial growth factor is a secreted angiogenic mitogen. Science 1989;246:1306-1309 https://doi.org/10.1126/science.2479986
  9. Terlikowski S, Lenczewski A, Sulkowska M, Famulski W, Sulkowski S, Kulikowski M. Tissue expression of VEGF as a prognostic factor in early cervical squamous cell carcinoma. Folia Histochem Cytobiol 2001;39(Suppl 2):112-113
  10. Mitsuhashi A, Suzuka K, Yamazawa K, Matsui H, Seki K, Sekiya S. Serum vascular endothelial growth factor (VEGF) and VEGF-C levels as tumor markers in patients with cervical carcinoma. Cancer 2005;103:724-730 https://doi.org/10.1002/cncr.20819
  11. Loncaster JA, Cooper RA, Logue JP, Davidson SE, Hunter RD, West CM. Vascular endothelial growth factor (VEGF) expression is a prognostic factor for radiotherapy outcome in advanced carcinoma of the cervix. Br J Cancer 2000;83:620-625 https://doi.org/10.1054/bjoc.2000.1319
  12. Lee IJ, Park KR, Lee KK, et al. Prognostic value of vascular endothelial growth factor in Stage IB carcinoma of the uterine cervix. Int J Radiat Oncol Biol Phys 2002:54:768-779 https://doi.org/10.1016/S0360-3016(02)02970-X
  13. Kodama J, Seki N, Tokumo K, et al. Vascular endothelial growth factor is implicated in early invasion in cervical cancer. Eur J Cancer 1999;35:485-489 https://doi.org/10.1016/S0959-8049(98)00410-9
  14. Kang JO, Hong SE. The prognostic effect of VEGF expression in squamous cell carcinoma of the cervix treated with radiation therapy alone. J Korean Med Sci 2004;19:693-697 https://doi.org/10.3346/jkms.2004.19.5.693
  15. Hashimoto I. Kodama J, Seki N, et al. Vascular endothelial growth factor-C expression and its relationship to pelvic lymph node status in invasive cervical cancer. Br J Cancer 2001;85:93-97 https://doi.org/10.1054/bjoc.2001.1846
  16. Cheng WF, Chen CA. Lee CN, Wei LH, Hsieh FJ, Hsieh CY. Vascular endothelial growth factor and prognosis of cervical carcinoma. Obstet Gynecol 2000;96:721-726 https://doi.org/10.1016/S0029-7844(00)01025-5
  17. Cheng WF, Chen CA, Lee CN, Chen TM, Hsieh FJ, Hsieh CY. Vascular endothelial growth factor in cervical carcinoma. Obstet Gynecol 1999;93:761-765 https://doi.org/10.1016/S0029-7844(98)00505-5
  18. Bachtiary B, Selzer E, Knocke TH, Potter R, Obermair A. Serum VEGF levels in patients undergoing primary radiotherapy for cervical cancer: impact on progression-free survival. Cancer Lett 2002;179:197-203 https://doi.org/10.1016/S0304-3835(01)00872-2
  19. Ferrara N. The role of vascular endothelial growth factor in pathological angiogenesis. Breast Cancer Res Treat 1995;36:127-137 https://doi.org/10.1007/BF00666035
  20. Pepper MS, Ferrara N, Orci L, Montesano R. Vascular endothelial growth factor (VEGF) induces plasminogen activators and plasminogen activator inhibitor-1 in microvascular endothelial cells. Biochem Biophys Res Commun 1991;181:902-906 https://doi.org/10.1016/0006-291X(91)91276-I
  21. Yamamoto S, Konishi I, Mandai M, et al. Expression of vascular endothelial growth factor (VEGF) in epithelial ovarian neoplasms: correlation with clinicopathology and patient survival, and analysis of serum VEGF levels. Br J Cancer 1997;76:1221-1227 https://doi.org/10.1038/bjc.1997.537
  22. Inoue K, Ozeki Y, Suganuma T, Susiura Y, Tanaka S. Vascular endothelial growth factor expression in primary esophageal squamous cell carcinoma. Association with angiogenesis and tumor progression. Cancer 1997;79:206-213 https://doi.org/10.1002/(SICI)1097-0142(19970115)79:2<206::AID-CNCR2>3.0.CO;2-I
  23. Ishigami SI. Arii S, Furutani M, et al. Predictive value of vascular endothelial growth factor (VEGF) in metastasis and prognosis of human colorectal cancer. Br J Cancer 1998;78:1379-1384 https://doi.org/10.1038/bjc.1998.688
  24. Linderholm B, Tavelin B, Grankvist K, Henriksson R. Vascular endothelial growth factor is of high prognostic value in node-negative breast carcinoma. J Clin Oncol 1998;16:3121-3128 https://doi.org/10.1200/JCO.1998.16.9.3121
  25. Fontanini G, Boldrini L, Chine S, et al. Expression of vascular endothelial growth factor mRNA in non-small-cell lung carcinomas. Br J Cancer 1999;79:363-369 https://doi.org/10.1038/sj.bjc.6690058
  26. Gupta VK, Jaskowiak NT, Beckett MA. et al. Vascular endothelial growth factor enhances endothelial cell survival and tumor radioresistance. Cancer J 2002;8:47-54 https://doi.org/10.1097/00130404-200201000-00009