Hyperfractionated Intensity-modulated Radiotherapy (IMRT) Versus

Status Active, not recruiting

Clinical Trial Summary

This study evaluates the hyperfractionated IMRT in the treatment of patients with locally recurrent nasopharyngeal carcinoma. Half of participants will receive hyperfractionated IMRT, while the other half will receive conventional fraction IMRT.

Clinical Trial Description

Local recurrence is one of the most challenging issues faced with nasopharyngeal carcinoma (NPC) patients. 8.4% to 10.9% of the patients developed recurrent diseases at the primary or/and regional site after definitive radiotherapy. Although some patients with limited recurrent lesions underwent surgery, the main treatment for these recurrent NPC patients was still re-irradiation.

Multiple retrospective and prospective studies have reported: under the condition of conventional fraction IMRT with the total dose of 60 gray (Gy) (division 27 times, once a day, every 2.2Gy), you can get a better local tumor control rate and survival outcome. However, the patients still underwent some severe late complications including nasopharyngeal necrosis, nasopharyngeal bleeding, temporal lobe necrosis, with the incidence rates of 28.8%, 18.6%, 20.3%, respectively. Approximately 50% of recurrent NPC patients died of these severe late complications, significantly compromising the overall survival rate of the patients. Previous studies showed that hyperfractionated radiotherapy could reduce severe late complication rates significantly, without affecting the local control rate. Indeed, we found that under the condition of equal irradiation time and tumor equivalent dosage between hyperfractionated IMRT (total dose of 65Gy, division 54 times, twice a day, once 1.2Gy, irradiation interval of 6-8 hours) and conventional fraction IMRT (total dose of 60Gy, division 27 times, once a day, every 2.2Gy), the normal late responding tissues equivalent dosage( EQD2) significantly decreased compared with conventional fraction IMRT. Therefore, the use of hyperfractionated IMRT is expected to decrease severe late complications rates, thereby improving the quality of life and overall survival of patients. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02456506
Study type	Interventional
Source	Sun Yat-sen University
Contact
Status	Active, not recruiting
Phase	N/A
Start date	June 2015
Completion date	March 2023

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Hyperfractionated Intensity-modulated Radiotherapy (IMRT) Versus Conventional Fraction IMRT for Patients With Loco-regionally Recurrent Nasopharyngeal Carcinoma.

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms