Spots Global Cancer Trial Database for De-escalation of Adjuvant Radio (Chemo) Therapy for HPV-positive Head-neck Squamous Cell Carcinomas

Study Description

Brief Summary: In patients with squamous cell carcinoma of the oral cavity, the oropharynx and larynx with local advanced tumors (pathologic stage T3 = pT3) and or lymph node involvement (pN+) postoperative radio - or radiochemotherapy is the standard of care. Postoperative radiochemotherapy is indicated in patients with multiple lymph node metastasis, lymph node metastasis with extracapsular spread and / or residual tumor (R1-Status) after resection. Oropharyngeal cancer caused by HPV (human papillomavirus 16 or 18) is a distinct subgroup with a known sensitivity to radiotherapy (RTx) or radiochemotherapy (RCTx). Additionally a superior outcome after R(C)Tx over HPV negative patients was shown for patients treated with primary or adjuvant RCTx. To date it is unknown if the total dose of the radiotherapy can be safely reduced with the aim to decrease the therapy associated late effects. Patients with a HPV associated carcinoma that take part in the study will be treated with a reduced radiotherapy dose, chemotherapy will be prescribed based on clinical factors (number of affected lymph node, presence of extracapsular spread or residual tumor). Radiation dose will be reduced in two steps.

Detailed Description: For all patients taking part in the study the HPV status of the resected tumor will be determined centrally by p16 immunohistochemistry and confirmation will be done by HPV DNA assessment using Polymerase Chain Reaction (PCR)-based array. Patients positive for HPV will be treated with a reduced RT dose to the tumor and to elective neck. HPV negative patients will be treated with standard radio- or radiochemotherapy. Patients deemed at high risk for locoregional recurrences (presence of extracapsular spread, residual tumor or multiple affected nodes) will be treated separately from patients deemed at intermediate risk (T\>=3, and / or 1-3 nodes positive). The high risk group will be treated with a higher dose and concurrent chemotherapy. After inclusion of 30 patients per treatment group, follow up for the patients will be awaited for two years and safety of the intervention will be assessed. The second de-escalation level will only be opened for accrual if not more than three locoregional recurrences will occur per treatment group.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Contact Details

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