An international multidisciplinary panel of experts aimed to provide consensus guidelines
describing the optimal intratumoral and intranodal injection of NBTXR3 hafnium oxide
nanoparticles in head and neck squamous cell carcinoma (HNSCC) of the oral cavity,
oropharynx, and cervical lymph nodes and to review data concerning safety, feasibility,
and procedural aspects of administration.The Delphi method was used to determine consensus.
A 4-member steering committee and a 10-member monitoring committee wrote and revised
the guidelines, divided into eight sections. An independent 3-member reading committee
reviewed the recommendations.After two rounds of voting, strong consensus was obtained
on all recommendations. Intratumoral and intranodal injection was deemed feasible.
NBTXR3 volume calculation, choice of patients, preparation and injection procedure,
potential side effects, post injection, and post treatment follow-up were described
in detail.Best practices for the injection of NBTXR3 were defined, thus enabling international
standardization of intratumoral nanoparticle injection.
