U.S., Sept. 18 -- ClinicalTrials.gov registry received information related to the study (NCT07178847) titled 'cDNA and Residual Disease After Chemoradiotherapy for Locally Advanced Head and Neck Squamous Cell Carcinomas' on Sept. 03.

Brief Summary: The goal of this ancillary clinical trial is to evaluated circulating DNA as a biomarker of residual disease after chemoradiotherapy for locally advanced head and neck squamous cell carninoma.

The main question it aims to answer is :

- Does circulating DNA (cDNA) be able to detect residual disease 3 months after the end of chemoradiotherapy ? Researchers will compare detection of cDNA at 3-months and objective response (clinical and radiological).

Participants will :

* be included in the mai...