BMC Cancer (Feb 2020)

Treatment de-escalation for HPV-associated oropharyngeal squamous cell carcinoma with radiotherapy vs. trans-oral surgery (ORATOR2): study protocol for a randomized phase II trial

  • Anthony C. Nichols,
  • Pencilla Lang,
  • Eitan Prisman,
  • Eric Berthelet,
  • Eric Tran,
  • Sarah Hamilton,
  • Jonn Wu,
  • Kevin Fung,
  • John R. de Almeida,
  • Andrew Bayley,
  • David P. Goldstein,
  • Antoine Eskander,
  • Zain Husain,
  • Houda Bahig,
  • Apostolos Christopoulous,
  • Michael Hier,
  • Khalil Sultanem,
  • Keith Richardson,
  • Alex Mlynarek,
  • Suren Krishnan,
  • Hien Le,
  • John Yoo,
  • S. Danielle MacNeil,
  • Adrian Mendez,
  • Eric Winquist,
  • Nancy Read,
  • Varagur Venkatesan,
  • Sara Kuruvilla,
  • Andrew Warner,
  • Sylvia Mitchell,
  • Martin Corsten,
  • Murali Rajaraman,
  • Stephanie Johnson-Obaseki,
  • Libni Eapen,
  • Michael Odell,
  • Shamir Chandarana,
  • Robyn Banerjee,
  • Joseph Dort,
  • T. Wayne Matthews,
  • Robert Hart,
  • Paul Kerr,
  • Samuel Dowthwaite,
  • Michael Gupta,
  • Han Zhang,
  • Jim Wright,
  • Christina Parker,
  • Bret Wehrli,
  • Keith Kwan,
  • Julie Theurer,
  • David A. Palma

DOI
https://doi.org/10.1186/s12885-020-6607-z
Journal volume & issue
Vol. 20, no. 1
pp. 1 – 13

Abstract

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Abstract Background Patients with human papillomavirus-positive (HPV+) oropharyngeal squamous cell carcinoma (OPC) have substantially better treatment response and overall survival (OS) than patients with HPV-negative disease. Treatment options for HPV+ OPC can involve either a primary radiotherapy (RT) approach (± concomitant chemotherapy) or a primary surgical approach (± adjuvant radiation) with transoral surgery (TOS). These two treatment paradigms have different spectrums of toxicity. The goals of this study are to assess the OS of two de-escalation approaches (primary radiotherapy and primary TOS) compared to historical control, and to compare survival, toxicity and quality of life (QOL) profiles between the two approaches. Methods This is a multicenter phase II study randomizing one hundred and forty patients with T1–2 N0–2 HPV+ OPC in a 1:1 ratio between de-escalated primary radiotherapy (60 Gy) ± concomitant chemotherapy and TOS ± de-escalated adjuvant radiotherapy (50–60 Gy based on risk factors). Patients will be stratified based on smoking status (< 10 vs. ≥ 10 pack-years). The primary endpoint is OS of each arm compared to historical control; we hypothesize that a 2-year OS of 85% or greater will be achieved. Secondary endpoints include progression free survival, QOL and toxicity. Discussion This study will provide an assessment of two de-escalation approaches to the treatment of HPV+ OPC on oncologic outcomes, QOL and toxicity. Results will inform the design of future definitive phase III trials. Trial Registration Clinicaltrials.gov identifier: NCT03210103. Date of registration: July 6, 2017, Current version: 1.3 on March 15, 2019.

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