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This is a prospective phase II clinical randomized controlled study, the purpose of this study is to assess whether superficial parotid lobe-sparing intensity-modulated radiotherapy (SPLS-IMRT) can decrease the incidence of xerostomia versus conventional IMRT (C-IMRT) in NPC patients.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| SPLS-IMRT | Experimental | The superficial parotid lobe was contoured as an OAR, and V26 (the percentage volume receiving 26 Gy or more) in the superficial parotid lobe was constrained to be less than 30% |
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| C-IMRT | No Intervention | The entire parotid gland was delineated as an OAR, and V36 (the percentage volume receiving 36 Gy or more) in the entire parotid gland was constrained to be less than 40% |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| superficial parotid lobe-sparing intensity-modulated radiotherapy | Radiation | The superficial parotid lobe was contoured as an OAR, and V26 (the percentage volume receiving 26 Gy or more) in the superficial parotid lobe was constrained to be less than 30%. |
| Measure | Description | Time Frame |
|---|---|---|
| the incidence of xerostomia | the incidence of xerostomia at 12m post-RT based on Radiation Therapy Oncology Group (RTOG) criteria | 12 months |
| Measure | Description | Time Frame |
|---|---|---|
| xerostomia questionnaire score | The XQ consisted of 8 specific questions which were listed as follows: difficulty in talking; difficulty in chewing; difficulty in swallowing solid food; frequency of sleeping problems; mouth and throat dryness when eating food; mouth and throat dryness while not eating; frequency of sipping liquids to aid swallowing food; frequency of sipping liquids for oral comfort when not eating. |
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Inclusion Criteria:1) newly diagnosed, histologically confirmed World Health Organization (WHO) type II-III NPC; 2) stage I-IVa (T1-4 N0-3M0) according to the staging system of the 8th American Joint Committee on Cancer/Union for International Cancer Control (AJCC/UICC); 3) no prior antitumor therapy; 4) no tumor involvement in salivary gland; 5) no parotid glands disorder and no history of parotid glands surgery; 6) ages between 18 and 70 years; 7) Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1, and 8) adequate organ function Exclusion Criteria: 1) used salivary stimulating or protecting agent; 2) metachronous or synchronous malignancy; 3) pregnancy or lactation; or 4) severe comorbidities. The pretreatment evaluation included a complete history and physical examination, nasopharyngoscopy, chest X-ray, complete blood count, liver and renal biochemistry, and magnetic resonance imaging (MRI) of the head and neck.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sun Yat-sen University | Guangzhou | Guangdong | 510060 | China |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 35817320 | Derived | Huang H, Miao J, Xiao X, Hu J, Zhang G, Peng Y, Lu S, Liang Y, Huang S, Han F, Deng X, Zhao C, Wang L. Impact on xerostomia for nasopharyngeal carcinoma patients treated with superficial parotid lobe-sparing intensity-modulated radiation therapy (SPLS-IMRT): A prospective phase II randomized controlled study. Radiother Oncol. 2022 Oct;175:1-9. doi: 10.1016/j.radonc.2022.07.006. Epub 2022 Jul 8. |
| Label | URL |
|---|---|
| Home Page of Cancer Center, Sun Yat-sen University | View source |
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| 12 months |
| Salivary flow rate | unstimulated salivary flow rateand stimulated salivary flow rate | 12 months |
| locoregional relapse-free survival | 36 months |
| distant metastasis-free survival | 36 months |
| overall survival | 36 months |
| ID | Term |
|---|---|
| D000077274 | Nasopharyngeal Carcinoma |
| ID | Term |
|---|---|
| D002277 | Carcinoma |
| D009375 | Neoplasms, Glandular and Epithelial |
| D009370 | Neoplasms by Histologic Type |
| D009369 | Neoplasms |
| D009303 | Nasopharyngeal Neoplasms |
| D010610 | Pharyngeal Neoplasms |
| D010039 | Otorhinolaryngologic Neoplasms |
| D006258 | Head and Neck Neoplasms |
| D009371 | Neoplasms by Site |
| D009302 | Nasopharyngeal Diseases |
| D010608 | Pharyngeal Diseases |
| D009057 | Stomatognathic Diseases |
| D010038 | Otorhinolaryngologic Diseases |
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