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A Phase II multi-institutional trial of chemoradiation using weekly docetaxel and erythropoietin for high-risk postoperative head and neck cancer patients.

Willey CD, Murphy BA, Netterville JL, Burkey BB, Shyr Y, Shakhtour B, Kish B, Raben D, Chen C, Song JI, Kane MA, Cmelak AJ
Int J Radiat Oncol Biol Phys. 2007 67 (5): 1323-31

PMID: 17289289 · DOI:10.1016/j.ijrobp.2006.11.033

PURPOSE - To determine efficacy and toxicities of postoperative concurrent chemoradiation using docetaxel in high-risk head and neck cancer.

METHODS AND MATERIALS - High-risk patients were enrolled 2-8 weeks after surgery. Treatment included 60 Gy for 6 weeks with weekly docetaxel 25 mg/m(2) and erythropoietin alpha 40,000 U for hemoglobin < or =12 g/dL. Primary endpoints included locoregional control (LC), disease-free survival (DFS), and patterns of failure (POF). Secondary endpoints were toxicity and quality of life.

RESULTS - Eighteen patients were enrolled (14 male, 4 female), aged 24-70 years (median, 55 years). Primary site included oropharynx = 7, oral cavity = 8, hypopharynx = 1, and larynx = 2. Pathologic American Joint Committee on Cancer Stage was III = 3 patients, IV = 15 patients. High-risk eligibility included > or =2 positive lymph nodes = 13, extracapsular extension = 10, positive margins = 8 (11 patients with two or more risk factors). Docetaxel was reduced to 20 mg/m(2)/week after 5 patients had prolonged Grade 3 or higher mucositis. Overall, number of doses delivered was 2 of 6 = 1, 3 of 6 = 2, 4 of 6 = 2, 5 of 6 = 4, 6 of 6 = 9 patients. With median follow-up of 30 months (range, 5-66), 10 (56%) patients are alive and have no evidence of disease (NED); POF: three local recurrences (two with distant) and 1 distant only. One-year survival was 76%, median PFS and DFS had not been reached. Three-year LC was 82%. No Grade 3 or higher late toxicities were observed, although a few cases of prolonged mucositis and taste loss (>3 months) were seen, particularly at 25 mg/m(2)/week.

CONCLUSION - Postoperative radiation therapy with weekly docetaxel 20 or 25 mg/m(2)/week for high-risk postoperative head and neck cancer caused intolerable mucosal toxicity, prompting early study termination. Further studies should consider 15 mg/m(2). Actuarial 3-year LC is 82%, similar to cisplatin-based chemoradiation regimens. Distant metastasis remains an important issue requiring additional systemic interventions.

MeSH Terms (21)

Adult Aged Antineoplastic Agents Combined Modality Therapy Disease-Free Survival Docetaxel Dose Fractionation, Radiation Erythropoietin Female Head and Neck Neoplasms Hemoglobin A Humans Male Middle Aged Mouth Mucosa Prospective Studies Radiation-Sensitizing Agents Radiation Injuries Radiotherapy Dosage Stomatitis Taxoids

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