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High-grade acute organ toxicity as positive prognostic factor in adjuvant radiation and chemotherapy for locally advanced head and neck cancer.

Abstract：

PURPOSE:To test for an association between high-grade acute organ toxicity during adjuvant radiation and chemotherapy and treatment outcome in patients with locally advanced head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS:Institutional review board approval was obtained for this retrospective study. From September 1994 to October 2008, 294 HNSCC patients were treated with adjuvant radiation and chemotherapy at the authors' department. They received normofractionated (2 Gy per fraction) irradiation to include associated nodal drainage sites, for a cumulative dose of 60-64 Gy. From January 2002 to December 2009, 91 patients received additional concomitant cisplatin-based chemotherapy. Toxicity during treatment was monitored weekly according to the common toxicity criteria (CTC); any CTC toxicity grade 3 or higher, including mucositis, dysphagia, or skin reaction, was considered high-grade acute organ toxicity. The influence of possible prognostic factors on overall survival and locoregional control was studied by means of uni- and multivariate Cox regression. RESULTS:A statistically significant association was found between high-grade acute organ toxicity and both overall survival and locoregional control. Patients with CTC grade 3 or greater acute organ toxicity had a 5-year overall survival and locoregional control rate of 90% and 97%, respectively, as compared with 24% and 74%, respectively, in patients without such toxicity (P < .01). Multivariate analyses revealed that this association was independent from other factors that may influence treatment toxicity, especially concomitant chemotherapy and/or radiation therapy. CONCLUSION:The data suggest that normal tissue and tumor tissue may behave similarly with respect to treatment response, as high-grade acute organ toxicity during radiation and chemotherapy was associated with better outcomes in the patient population; therefore, the hypothesis should be further analyzed on the biomolecular and clinical level and with other tumor entities in prospective clinical trials.

journal_name

Radiology

journal_title

Radiology

authors

Wolff HA,Daldrup B,Jung K,Overbeck T,Hennies S,Matthias C,Hess CF,Roedel RM,Christiansen H

doi

10.1148/radiol.10100705

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

864-71

issue

eissn

0033-8419

issn

1527-1315

pii

258/3/864

journal_volume

258

pub_type

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High-grade acute organ toxicity as positive prognostic factor in adjuvant radiation and chemotherapy for locally advanced head and neck cancer.