OPHTHALMOLOGIC EVALUATION OF RADIATION-RELATED OPTIC NEUROPATHY FOLLOWING IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY (IMRT) FOR NASOPHARYNGEAL CARCİNOMA

Not Applicable

• Conditions: The Aim of Our Study is to Prospectively Evaluate the Optic Neuropathy in Nasopharynx Cancer Patients

• Registration Number: NCT04724590
• Lead Sponsor: Istanbul University - Cerrahpasa (IUC)

Brief Summary

Primary treatment in nasopharynx cancers is radiotherapy (RT) or chemoradiotherapy (CRT) depending on the stage of the tumor. According to the guidelines, the dose of radiotherapy for primary tumors varies between 66-70 Gy. In consideration of modern radiotherapy techniques like IMRT with systemic chemotherapy for nasopharyngeal cancer, loco-regional control has been perfect. However, the rate of late complications from treatment, many of which are irreversible, is still high. Radiation-related optic neuropathy is the late complication that optic nerves might be affected during the radiotherapy due to the close location of the nasopharynx. Incidence of this is 8.7-9% in head and neck cancer and is observed between 2-9 years after RT. Painless, irreversible, and progressive vision loss usually occurs, and the pallor of optic disc margins, retinal vein dilatation, bleeding, and neovascularization are in the ophthalmic examination. The risk of optic neuropathy increases when the tumor is in close contact with optic nerves, radiation dose, concurrent chemotherapy used, history of diabetes or hypertension.

The aim of our study is to prospectively evaluate optic neuropathy in nasopharynx cancer patients treated in our clinic.

Detailed Description

Not available

Study Timeline

• Study Start: 2020-12-03
• Status Verified: 2021-01
• Study First Submitted: 2021-01-21
• Study First Submitted QC: 2021-01-21
• Last Update Submitted: 2021-01-21
• Study First Posted: 2021-01-26
• Last Update Posted: 2021-01-26
• Primary Completion: 2021-04-03
• Study Completion: 2021-05-03

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 15

Inclusion Criteria

Patient with nasopharyngeal carcinoma that histopathologically confirmed Age >18 Radiotherapy or chemoradiotherapy applied to the patient in our clinic No recurrence or metastasis during follow-up Optic evaluation Evaluation with MRI or CT during follow-up

Exclusion Criteria

Cranial RT No histopathological verification Age< 18 There were locoregional recurrence or metastasis

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
OPHTHALMOLOGIC EVALUATION OF RADIATION-RELATED OPTIC NEUROPATHY FOLLOWING IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY (IMRT) FOR NASOPHARYNGEAL CARCİNOMA (ORONIN) RADIATION-RELATED OPTIC NEUROPATHY	2-9 years	RADIATION-RELATED OPTIC NEUROPATHY

Trial Locations

Locations (1)

Meltem Dağdelen; 🇹🇷 Istanbul, Turkey