e15541 Background: Definitive treatment with concurrent cisplatin and radiation is the standard of care for locally advanced cervical cancer. The optimal management of patients with a contraindication to cisplatin has not been established. We conducted a retrospective audit of the impact of concurrent chemoradiation in a cohort of patients (pts) with locally advanced cervical cancer. Methods: All pts with locally advanced cervical cancer treated with definitive radiation were entered into a prospective database. Information regarding their demographics, stage, histology, recurrence and survival were recorded. Pharmacy records were reviewed to determine concurrent chemotherapy use. The primary endpoint was overall survival, and secondary endpoints were disease free survival and rates of primary, nodal or distant failure. Univariate and multivariate analyses were performed, incorporating known prognostic factors of age, FIGO stage, uterine body involvement, tumour volume on MRI and nodal involvement. Results: 442 pts were treated from Jan 1996 to Feb 2011. Median age was 59 (range 22-94); 89% had squamous histology and 64% node-negative disease. 269 pts received cisplatin, 59 received carboplatin because of a contraindication to cisplatin and 114 received no concurrent chemotherapy (most prior to 1999). Overall survival adjusted for other prognostic factors was significantly improved with use of concurrent cisplatin compared to radiation alone (HR 0.53, p=0.001), as was disease free survival and the rate of distant failure. Use of concurrent carboplatin was not associated with any significant benefit compared to radiation alone in terms of overall survival or disease free survival on univariate or multivariate analyses. Conclusions: The results of this audit are consistent with the known significant survival benefit with concurrent cisplatin chemoradiation. However, there did not appear to be any significant benefit associated with concurrent carboplatin although there are potential confounding factors in this small cohort. The available evidence in the literature favors the use of non-platinum chemotherapy rather than carboplatin in pts with contraindications to cisplatin.
Multi-Habitat Based Radiomics for the Prediction of Treatment Response to Concurrent Chemotherapy and Radiation Therapy in Locally Advanced Cervical Cancer
