Reduced Target Delineation and Radiation Doses Chemoradiotherapy for Patients With Locoregionally Advanced Nasopharyngeal Carcinoma

Xiayun He, MD

Status and phase: Completed; Phase 2

Conditions: Nasopharyngeal Carcinoma

Treatments: Radiation: Reduced Target Delineation and Radiation Doses

Study type: Interventional

Funder types: Other

Identifiers

NCT03389295

TPF-Shanghai

Details and patient eligibility

About

To determine the efficacy and safety of sequential chemoradiotherapy with regimen of docetaxel, cisplatin and fluorouracil and reduced target delineation and radiation doses IMRT for patients with locoregionally advanced nasopharyngeal carcinoma

Full description

Although concurrent chemoradiation is the standard treatment modality for locally advanced nasopharyngeal carcinoma (NPC), high incidences of distant metastases and severe treatment related toxicities have become an obstacle to be overcome. Besides, a common problem in locally advanced NPC is the narrow gap between the tumor and critical normal structures, which makes dose optimization difficult. Considering that significant tumor shrinkage may occur during induction chemotherapy, and incidences of distant metastases may be reduced by adjuvant chemotherapy, this study was designed to explore the efficacy and safety of sequential chemoradiotherapy with regimen of docetaxel, cisplatin and fluorouracil and reduced target delineation and radiation doses IMRT for patients with locoregionally advanced NPC.

Enrollment: 118 patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Histopathologically proven nasopharyngeal carcinoma (WHO type 2 or 3)
2. Stage Ⅲ-ⅣB disease (AJCC/UICC 2010)
3. KPS more than 70
4. Life expectancy of more than 6 months
5. Signed written informed consent
6. Adequate organ function including the following:

Absolute neutrophil count (ANC) >= 1.5 * 109/l Platelets count >= 100 * 109/l Hemoglobin >= 10 g/dl AST and ALT <= 2.5 times institutional upper limit of normal (ULN) Total bilirubin <= 1.5 times institutional ULN Creatinine clearance >= 50 ml/min Serum creatine <= 1 times ULN

Exclusion criteria

1. Evidence of distant metastasis
2. Prior chemotherapy or anti-cancer biologic therapy for any type of cancer, or prior radiotherapy to the head and neck region
3. Other previous or concomitant cancer, except for in situ cervical cancer and cutaneous basal cell carcinoma
4. Pregnant or breast-feeding females, or females and males of childbearing potential not taking adequate contraceptive measures
5. Presence of an uncontrolled concomitant illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, or cardiac arrhythmia

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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118 participants in 1 patient group

Reduced Target Delineation and Radiation Doses

Experimental group

Description:

All patients were assigned to receive induction chemotherapy (IC) followed by IMRT with adjuvant chemotherapy (AC). IMRT was administered 2 weeks after IC, and AC was administered 1 month after IMRT. IC or AC (TPF regimen) comprised docetaxel (60 mg/m2/day, day 1), cisplatin (25 mg/m2/day, days 1-3), and 5-fluorouracil (500 mg/m2/day with a 120-h infusion) administered once every 3 weeks for two cycles. During radiotherapy, involved retropharyngeal lymph nodes and intracavity lesions of the primary tumor were delineated according to the post-IC volume, whereas the remainder of the involved tissues (eg, pterygopalatine fossa) of the primary tumor were delineated according to the pre-IC volume of the primary tumor as shown by MRI. Post-IC volumes of involved neck lymph nodes were used for delineation. The prescribed dose was 66 Gy to tumors above the slices of skull base or below the orapharynx with less than 5 mm retropharyngeal lymph nodes, or 70.4 Gy to tumors in other slices.

Treatment:

Radiation: Reduced Target Delineation and Radiation Doses