# Exploratory Study of Clonal Evolution in Cancer for Patients Undergoing Transoral Robotic Surgery for Radiation Exposed Residual/reCurrent Tumours of the Upper Aerodigestive Tract

> **NCT04671940** · — · RECRUITING · sponsor: **Royal Marsden NHS Foundation Trust** · enrollment: 20 (estimated)

## Conditions studied

- Head and Neck Cancer

## Interventions

- **OTHER:** DNA Analysis

## Key facts

- **NCT ID:** NCT04671940
- **Lead sponsor:** Royal Marsden NHS Foundation Trust
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-11-18
- **Primary completion:** 2026-10-07
- **Final completion:** 2026-10-07
- **Target enrollment:** 20 (ESTIMATED)
- **Last updated:** 2026-02-12

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04671940

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04671940, "Exploratory Study of Clonal Evolution in Cancer for Patients Undergoing Transoral Robotic Surgery for Radiation Exposed Residual/reCurrent Tumours of the Upper Aerodigestive Tract". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT04671940. Licensed CC0.

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