International Expert-Based Consensus Definition, Classification Criteria, and Minimum Data Elements for Osteoradionecrosis of the Jaw: An Inter-Disciplinary Modified Delphi Study

International ORAL Consortium, Amy C Moreno*, Erin E Watson, Laia Humbert-Vidan, Douglas E Peterson, Lisanne V van Dijk, Teresa Guerrero Urbano, Lisa Van den Bosch, Andrew J Hope, Matthew S Katz, Frank J P Hoebers, Ruth A Aponte Wesson, James E Bates, Paolo Bossi, Adeyinka F Dayo, Mélanie Doré, Eduardo Rodrigues Fregnani, Thomas J Galloway, Daphna Y Gelblum, Issa A HannaChristina E Henson, Sudarat Kiat-Amnuay, Anke Korfage, Nancy Y Lee, Carol M Lewis, Charlotte Duch Lynggaard, Antti A Mäkitie, Marco Magalhaes, Yvonne M Mowery, Carles Muñoz-Montplet, Jeffrey N Myers, Ester Orlandi, Jaymit Patel, Jillian M Rigert, Deborah Saunders, Jonathan D Schoenfeld, Ugur Selek, Efsun Somay, Vinita Takiar, Juliette Thariat, Gerda M Verduijn, Alessandro Villa, Nick West, Max J H Witjes, Alex Won, Mark E Wong, Christopher M K L Yao, Simon W Young, Kamal Al-Eryani, Carly E A Barbon, Abdul Ahad Khan, Stephen Y. Lai, Clifton David Fuller

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

PURPOSE: Osteoradionecrosis of the jaw (ORNJ) is a severe iatrogenic disease characterized by bone death after radiation therapy (RT) to the head and neck. With over 9 published definitions and at least 16 classification systems, the true incidence and severity of ORNJ are obscured by lack of a standard for disease definition and severity assessment, leading to inaccurate estimation of incidence, reporting ambiguity, and likely under-diagnosis worldwide. This study aimed to achieve consensus on an explicit definition and phenotype of ORNJ and related precursor states through data standardization to facilitate effective diagnosis, monitoring, and multidisciplinary management of ORNJ.

METHODS: The ORAL Consortium comprised 69 international experts, including representatives from medical, surgical, radiation oncology, and oral/dental disciplines. Using a web-based modified Delphi technique, panelists classified descriptive cases using existing classification systems, reviewed systems for feature extraction and specification, and iteratively classified cases based on clinical/imaging feature combinations.

RESULTS: The Consortium ORNJ definition was developed in alignment with SNOMED-CT terminology and recent ISOO-MASCC-ASCO guideline recommendations. Case review using existing ORNJ classification systems showed high rates of inability to classify (up to 76%). Ten consensus statements and nine minimum data elements (MDEs) were outlined for prospective collection and classification of precursor/ORNJ disease states.

CONCLUSION: This study provides an international, consensus-based definition and MDE foundation for standardized ORNJ reporting in cancer survivors treated with RT. Head and neck surgeons, radiation, surgical, medical oncologists, and dental specialists should adopt MDEs to enable scalable health information exchange and analytics. Work is underway to develop both a human- and machine-readable knowledge representation for ORNJ (i.e., ontology) and multidisciplinary resources for dissemination to improve ORNJ reporting in academic and community practice settings.

Original languageEnglish
Pages (from-to)341-354
Number of pages14
JournalInternational Journal of Radiation Oncology, Biology, Physics
Volume122
Issue number2
Early online date16-Jan-2025
DOIs
Publication statusPublished - Jun-2025

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