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Author Notes:

Reprint requests to: Mohammad K. Khan, MD, PhD, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322; drkhurram2000@gmail.com.

Conflict of interest: none.

The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Subject:

Research Funding:

Research reported in this publication was supported in part by the Biostatistics and Bioinformatics Shared Resource of Winship Cancer Institute of Emory University and the National Institutes of Health/National Cancer Institute under award no. P30CA138292.

Keywords:

  • Science & Technology
  • Life Sciences & Biomedicine
  • Oncology
  • Radiology, Nuclear Medicine & Medical Imaging
  • MYCOSIS-FUNGOIDES
  • BEAM THERAPY
  • PRELIMINARY EXPERIENCE
  • RADIATION-THERAPY
  • IRRADIATION
  • PROGNOSIS
  • SCHEDULE
  • SEX

Total Skin Electron Therapy for Cutaneous T-Cell Lymphoma Using a Modern Dual-Field Rotational Technique

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Journal Title:

International Journal of Radiation Oncology - Biology - Physics

Volume:

Volume 92, Number 1

Publisher:

, Pages 183-191

Type of Work:

Article | Post-print: After Peer Review

Abstract:

Purpose: To report our experience with rotational total skin electron irradiation (RTSEI) in cutaneous T-cell lymphoma (CTCL), and to examine response by disease stage and race. Methods and Materials: We reviewed our outcomes for 68 CTCL patients who received RTSEI (≥30 Gy) from 2000 to 2013. Primary outcomes were complete clinical response (CCR), recurrence-free survival (RFS), and overall survival (OS). Using log-rank tests and Cox proportional hazards, OS and RFS were compared across tumor stages at time of RTSEI with further racial subgroup analysis. Results: Median age at diagnosis and at time of radiation was 52 and 56 years, respectively. Median follow-up was 5.1 years, 49% were African American, and 49% were female. At time of treatment, 18, 37, and 13 patients were T stage 2, 3, and 4, respectively. At 6 weeks after RTSEI, overall CCR was 82% (88%, 83%, and 69% for T2, T3, and T4, respectively). Median RFS was 11 months for all patients and 14, 10, and 12 months for stage T2, T3, and T4, respectively. Tumor stage was not associated with RFS or CCR. Maintenance therapy after RTSEI was associated with improved RFS in both crude and multivariable analysis, controlling for T stage. Median OS was 76 months (91 and 59 months for T3 and T4, respectively). With the exception of improved OS in African Americans compared with whites at stage T2, race was not associated with CCR, RFS, or OS. Conclusions: These results represent the largest RTSEI clinical outcomes study in the modern era using a dual-field rotational technique. Our observed response rates match or improve upon the standard set by previous outcome studies using conventional TSEI techniques, despite a large percentage of advanced CTCL lesions in our cohort. We found that clinical response after RTSEI did not seem to be affected by T stage or race.

Copyright information:

This is an Open Access work distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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