Robotic surgery for HPV-related throat cancer

The Sinai Robotic Surgery Trial in HPV-related Oropharyngeal Squamous Cell Carcinoma (SIRS 2.0 Trial)

Phase 2 Interventional Icahn School of Medicine at Mount Sinai · NCT05419089

This study is testing if robotic surgery can be a safe and effective treatment for patients with HPV-related throat cancer who have low levels of cancer markers after surgery, to see if it works as well as traditional treatments without the harsh side effects.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment83 (estimated)
Ages18 Years and up
SexAll
SponsorIcahn School of Medicine at Mount Sinai Academic / other
Drugs / interventionschemotherapy, radiation
Locations2 sites (Paramus, New Jersey and 1 other locations)
Trial IDNCT05419089 on ClinicalTrials.gov

What this trial studies

This trial investigates the effectiveness of transoral robotic surgery (TORS) as a standalone treatment for patients with HPV-positive oropharyngeal squamous cell carcinoma who have undetectable postoperative HPV circulating tumor DNA. The study aims to determine if this approach can achieve cancer control and survival rates similar to those seen with standard therapies, while potentially reducing the long-term complications associated with chemotherapy and radiation. Patients will be stratified based on their HPV status and pathology results to assess the outcomes of this less aggressive treatment method.

Who should consider this trial

Good fit: Ideal candidates are patients with resectable HPV-positive oropharyngeal squamous cell carcinoma who have detectable pre-surgery circulating tumor DNA and undetectable levels post-surgery.

Not a fit: Patients with HPV-negative oropharyngeal squamous cell carcinoma or those who do not meet the specific eligibility criteria will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved survival rates and fewer long-term side effects for patients with HPV-related throat cancer.

How similar studies have performed: Other studies have shown promising results with similar approaches, particularly in reducing the need for aggressive treatments in HPV-positive cancers.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients must have histologically or cytologically confirmed and identified resectable primary OPSCC with positive p16 immunohistochemistry, defined as strong and diffuse nuclear and cytoplasmic staining in \> 70% of tumor cells. Immunohistochemistry must be performed or reviewed at the central laboratory. P16 status may be determined prior to consent and must be confirmed by surgical specimen if a biopsy is unavailable. HR-HPV status and postoperative cfHPVDNA testing must be performed and resulted prior to treatment assignment. Tissue from the primary site must be available for biomarker studies after surgery.
* Patients enrolled in the trial must have pre-surgery baseline cfHPVDNA using the NavDX assay (Naveris, Cambridge, MA). Detectable baseline cfHPVDNA copy number is defined as ≥ 10 fragments/mL and is required for inclusion in the trial.
* Undetectable cfHPVDNA after surgery. All patients should have a repeat cfHPVDNA test within 1 to 5 weeks post-operatively and prior to treatment assignment. Undetectable cfHPVDNA is defined as \< 5 fragments/mL.
* AJCC 7th edition early and intermediate stage (T1N0-2B, T2N0-2B) (non-matted) disease without evidence of distant metastases or gross extranodal extension.
* Age ≥ 18 years at screening
* No previous surgery, radiation therapy, or chemotherapy for head and neck cancer (other than excision/incisional biopsy of the primary site, excisional/incisional nodal biopsy, or tonsillectomy) is allowed at time of study entry.
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
* No active tobacco use (≥1cigarette or cigarette-equivalent per day within the last 5 years) and no cumulative smoking history of \>20 pack years. 1 cigar = 4 cigarette-equivalent exposure
* Ability to understand and the willingness to sign a written informed consent document.
* Participants must have adequate bone marrow, hepatic and renal functions as defined below:

  * Platelet count ≥ 90 x 109/l.
  * Hemoglobin ≥ 10 g/dl (may achieve by transfusion).
  * Renal function: eGFR ≥ 50 ml/min

Exclusion Criteria

* Age \< 18 years at screening
* Pregnant or breast-feeding women.
* Previous or current malignancies at other sites, except for adequately treated in situ carcinoma of the cervix, basal or squamous cell carcinoma of the skin, thyroid cancer, prostate cancer treated with surgery/radiotherapy, ductal carcinoma in situ of the breast treated with surgery/radiotherapy, or other cancer curatively treated and with no current evidence of disease for at least 3 years.
* Other serious illnesses or medical conditions including but not limited to:

  * Unstable cardiac disease despite treatment or myocardial infarction within 6 months prior to study entry.
  * History of significant neurologic or psychiatric disorders including severe dementia or poorly controlled seizures
  * Active clinically significant uncontrolled infection
  * Active peptic ulcer disease defined as unhealed or clinically active
  * Active drug addiction including alcohol, cocaine or intravenous drug use defined as occurring within the 6 months preceding diagnosis
  * Severe chronic obstructive pulmonary disease, defined as being associated with a hospitalization for pneumonia within 12 months of diagnosis.
  * Prior organ transplant
  * Interstitial lung disease
  * Concurrent treatment with any other anti-cancer therapy
  * Participation in an investigational therapeutic drug trial within 30 days of study entry. Participation in additional investigational radiation studies will exclude participation in SIRS. Participation in non-therapeutic, non-oncologic investigational studies (i.e. pain control studies, nutritional studies, etc.) will be allowed amongst SIRS participants, provided there is no alteration of treatment planning, oncologic therapy, or surveillance, and additional studies comply with SIRS safety criteria and stopping rules as outlined in the SIRS protocol.
  * Active hepatitis C by history
* Advanced nodal stage (AJCC 7th edition N2C, N3) or surgically unresectable disease or disease that cannot be fully resected, unequivocal radiographic extranodal extension, unequivocal radiographic or clinical supraclavicular or matted metastatic disease, \> 3 unequivocally radiographic pathologic cervical nodes.
* Non-HR-HPV subtype on initial biopsy or final pathology.
* 5 or more positive nodes, irrespective of size, on final pathology.
* p16 or HPV negative OPSCC as determined by IHC and PCR or ISH, respectively.
* Undetectable or \< 10 fragments/mL baseline cfHPVDNA prior to surgery.
* Autoimmune disease treated with chemotherapy agents or anti TNF agents within the last 2 years.
* Detectable repeat cfHPVDNA 1-5 weeks postoperatively via the NavDX assay, defined as \> 5 fragments/mL.

Where this trial is running

Paramus, New Jersey and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HPV-positive Oropharyngeal Squamous Cell CarcinomaOropharyngeal squamous cell carcinomaOPSCCHuman papillomavirusTransoral robotic surgeryTORSHPVp16
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.