Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/43853
Title: IGF-1R expression in localized cervical carcinoma patients treated by radiochemotherapy
Authors: Lloret Sáez-Bravo, Marta 
Lara, Pedro Carlos
Bordón Rodríguez, Elisa de los Reyes 
Pinar, Beatriz
Rey, Agustin
Falcón, Orlando
Molano, Fernando
Hernández, Maria Antonia
UNESCO Clasification: 32 Ciencias médicas
320101 Oncología
Keywords: IGF-1R
Cervix carcinoma
Definitive radiotherapy
Concomitant chemotherapy
Local control
Issue Date: 2007
Publisher: 0090-8258
Journal: Gynecologic Oncology 
Abstract: Purpose: To assess the expression of IGF-1R in cervix carcinoma patients treated by radiotherapy and concomitant chemotherapy, its relation to clinical and pathologic prognostic factors and its role in predicting clinical outcome. Materials and methods: Sixty consecutive patients suffering from localized cervix carcinoma were prospectively included in this study from July 1999 to December 2003. Follow-up was closed in March 2006. Patients were staged following the TNM classification. All patients were referred to pelvic radiation up to doses of 45–64.80 Gy in 1.8–2 Gy fractions followed brachytherapy treatment. External radiotherapy boost was used in one patient not receiving brachytherapy (total dose up to 64.80 Gy). All patients received concomitant cisplatin at 40 mg/m2/week doses during pelvic radiation. IGF-1R expression was studied by immunohistochemistry in paraffin-embedded tumor tissue. Results: IGF-1R was expressed in 56 patients (93.7%) and no relation was found with clinicopathological variables. Complete response after treatment was observed in 50 patients (83.3%). Clinical stage of the disease and clinical response to radiotherapy were the most important prognostic factors related to survival. Low (negative and fairly) IGF-1R tumor expression was correlated to better long-term Local and Regional Disease Free Survival (p = 0.045), Disease-Free Survival (p = 0.045), Cause-Specific Survival (p = 0.032) and Overall Survival (p = 0.021) in patients achieving a complete response. Conclusion: High IGF-1R expression is related with reduced long-term local control due to tumor disease radiochemoresistance in patients who initially respond to definitive radiotherapy and concomitant chemotherapy.
URI: http://hdl.handle.net/10553/43853
ISSN: 0090-8258
DOI: 10.1016/j.ygyno.2007.04.004
Source: Gynecologic Oncology [ISSN 0090-8258], v. 106, p. 8-11
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