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Squamous Cell CarcinomaPhase 1NCT03381183

IRX-2 Regimen and Durvalumab, for Incurable H&N Squamous Cell Carcinoma

A Phase 1 study testing Durvalumab and IRX-2 Regimen in people with Squamous Cell Carcinoma and Squamous Cell Carcinoma of the Head and Neck, run by H. Lee Moffitt Cancer Center and Research Institute at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to see if the IRX-2 regimen and Durvalumab, will have a tolerable safety profile and will increase the intratumoral immune profile compared with the pretreatment tumors. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Durvalumab and IRX-2 Regimen
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
19 participants
Where
1 siteUnited States
Study dates
21 Aug 2019to 30 Jun 2023
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participants must have histologically or cytologically confirmed squamous cell carcinoma of oral cavity, oropharynx, paranasal sinuses, nasal cavity, hypopharynx, or larynx. Squamous cell carcinoma of unknown primary in cervical lymph node can be included only if p16 status is positive.
  • Must have recurrent or metastatic HNSCC that is not amenable to local therapy with curative intent (surgery or radiation therapy with or without chemotherapy). Participants with persistent disease following radiation therapy administered with or without a chemotherapy sensitizer may also be included.
  • Willing and able to give informed consent and adhere to protocol therapy; written informed consent and any locally required authorization must be obtained from the patient prior to performing any protocol-related procedures, including screening evaluations
  • At least 18 years of age
  • Eastern Cooperative Oncology Group (ECOG) 0-2
  • Adequate normal organ and marrow function as outlined in protocol documentation
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  • Must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as outlined in Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
  • Life expectancy of greater than 3 months.
  • Female participants of childbearing potential must have a negative serum pregnancy test within 7 days prior to enrollment.
  • Body weight must be > 30 Kg.
  • Participants must have a mass that is accessible and safe for repeat biopsy Note: if a participant is considered to be amendable to biopsy at the time of enrollment but is then unable to undergo a post-treatment biopsy this will not be considered an ineligible subject, although the missed biopsy will still constitute a protocol deviation.

Who cannot join

  • Prior exposure to a combination of IRX-2 regimen, and PD-1/PD-L1 inhibitors
  • Radiation therapy with a curable intent within 30 days of first dose of study treatment is excluded. However, radiation therapy with a palliative intent is allowed to treat after 14 days from the last dose of radiation.
  • Any medical contraindications or previous therapy that would preclude treatment with the IRX-2 Regimen and durvalumab
  • Any unresolved toxicity NCI Common Terminology Criteria for Adverse Events (CTCAE) Grade ≥ 2 from previous anticancer therapy with the exception of alopecia, vitiligo, and the laboratory values defined in the inclusion criteria, and except toxicities the investigator deems irreversible.
  • Grade ≥ 2 neuropathy will be evaluated on a case-by-case basis after consultation with the study physician
  • Patients with irreversible toxicity not reasonably expected to be exacerbated by treatment with the IRX- regiemtn or durvalumab may be included only after consultation with the study physician.
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  • Active or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease [e.g., colitis or Crohn's disease], diverticulitis [with the exception of diverticulosis], systemic lupus erythematosus, Sarcoidosis syndrome, or Wegener syndrome [granulomatosis with polyangiitis, Graves' disease, rheumatoid arthritis, hypophysitis, uveitis, etc]). The following are exceptions to this criterion: Patients with vitiligo or alopecia; Patients with hypothyroidism (e.g., following Hashimoto syndrome) stable on hormone replacement. Any chronic skin condition that does not require systemic therapy; Patients without active disease in the last 2 years may be included but only after consultation with the study physician; Patients with celiac disease controlled by diet alone.
  • Current or prior use of immunosuppressive medication within 14 days before the first dose of durvalumab. The following are exceptions to this criterion: Intranasal, inhaled, topical steroid, or local steroid injections (e.g., intra articular injection); Systemic corticosteroids at physiologic doses not to exceed 10 mg/day of prednisone or its equivalent; Steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication).
  • Concomitant anticoagulation with oral anticoagulants (such as warfarin, direct thrombin and Factor Xa inhibitors) or platelet inhibitors (such as clopidogrel) that cannot be safely stopped.
  • Major surgical procedure (as defined by the Investigator) within 28 days prior to the first dose of durvalumab. Note: Local surgery of isolated lesions for palliative intent is acceptable.
  • History of allogenic organ transplantation.
  • Symptomatic cardiopulmonary disease (including congestive heart failure and hypertension), coronary artery disease, serious arrhythmia or chronic lung disease. Patients with these conditions who are stable with relatively minor symptoms and who are appropriate candidates for systemic treatments need not be excluded.
  • Myocardial infarction within the last 3 months.
  • Known infection with hepatitis B, hepatitis C, or HIV.
  • Signs or symptoms of systemic bacterial infection (use of antibiotics to treat superficial infection or contamination of tumor shall not, by itself, be considered evidence of infection).
  • Clinically significant gastritis or peptic ulcer disease.
  • Stroke or other symptoms of cerebral vascular insufficiency within the last 3 months.
  • Allergy to ciprofloxacin (or other quinolones).
  • Previous diagnosis of invasive cancer from which the individual is not disease-free AND that has required treatment within the past 3 years, except for superficial skin, cervical cancer in-situ, or early stage prostate or bladder cancer (i.e. treatment with curative intent and long term disease-free expectations).
  • History of leptomeningeal carcinomatosis or known untreated or symptomatic brain metastases. Treated, asymptomatic brain metastasis can be included.
  • Known allergy or hypersensitivity to any of the study drugs or any of the study drug excipients.
  • Females who are pregnant or breastfeeding; males or females of reproductive potential who are not willing to employ effective birth control from screening to 90 days after the last dose of durvalumab or 1 year after last dose of cyclophosphamide, whichever is the longer time period.
  • Uncontrolled intercurrent illness, including but not limited to, ongoing or active infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable angina pectoris, cardiac arrhythmia, interstitial lung disease, serious chronic gastrointestinal conditions associated with diarrhea, or psychiatric illness/social situations that would limit compliance with study requirement, substantially increase risk of incurring AEs or compromise the ability of the patient to give written informed consent.
  • Mean QT interval corrected for heart rate using Fridericia's formula (QTcF) ≥470 ms calculated from 3 ECGs (within 15 minutes at 5 minutes apart).
  • History of active primary immunodeficiency
  • Active infection including tuberculosis (clinical evaluation that includes clinical history, physical examination and radiographic findings, and tuberculosis (TB) testing in line with local practice), hepatitis B (known positive HBV surface antigen (HBsAg) result), hepatitis C, or human immunodeficiency virus (positive HIV 1/2 antibodies). Patients with a past or resolved HBV infection (defined as the presence of hepatitis B core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients positive for hepatitis C (HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA.
  • Receipt of live attenuated vaccine within 30 days prior to the first dose of investigational produce (IP). Note: Patients, if enrolled, should not receive live vaccine whilst receiving IP and up to 30 days after the last dose of IP.

Trial locations and contacts

1 site in 1 country.

United States1 site

  • H. Lee Moffitt Cancer Center and Research Institute

    Tampa, Florida, 33612

Other trials in United States

About this study

Official title: A Phase 1b Trial of the IRX-2 Regimen and Durvalumab (MEDI4736), in Patients With Incurable Head and Neck Squamous Cell Carcinoma

The purpose of this study is to see if the IRX-2 regimen and Durvalumab, will have a tolerable safety profile and will increase the intratumoral immune profile compared with the pretreatment tumors.

Read the detailed description

Study Population:

Patients with histologically or cytologically confirmed recurrent or metastatic squamous cell carcinoma of oral cavity, oropharynx, paranasal sinuses, hypopharynx, or larynx that is not amenable to local therapy with curative intent. Squamous cell carcinoma of unknown primary in cervical lymph node can be included only if p16 status is positive.

Being tested
Durvalumab, IRX-2 Regimen
Medical subject headings
Carcinoma, Squamous Cell, Squamous Cell Carcinoma of Head and Neck

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DurvalumabDrug

    Also called MEDI4736, IMFINZI

    Phase 1 and Phase 2: 1500 mg every 4 weeks (Q4wks).

  • IRX-2 RegimenDrug

    Phase 1 and Phase 2 - Every 12 weeks - IRX-2 Regimen:

    Cyclophosphamide 300 mg/m^2 - intravenously.

    IRX-2: 460 units daily (4 injections of 115 units).

Study groups in NCT03381183
Study groupRoleWhat they receive
Phase 1 - Dose EscalationExperimentalSix patients will be enrolled at Dose Level 1 with IRX-2 230 units/day in combination with cyclophosphamide and durvalumab and treated sequentially at least 1 week apart. If less than 2 out of 6 patients have DLTs in Dose Level 1, the dose will be escalated to administration of IRX-2 460 Units/day in combination with cyclophosphamide and durvalumab as Dose Level 2. If 2 of 6 patients have DLTs, stop accrual and re-evaluate. In the next safety phase, six patients at IRX-2 460 Units/day in combination with cyclophosphamide and durvalumab will be enrolled and treated sequentially (at least 1 week apart). If DLT occurs in less than 2 of 6 patients during the first 6 weeks of treatment, enrollment can continue in the dose expansion phase at Dose Level 2. If DLT is observed in 2 of 6 patients, accrual will be stopped and Dose Level 1 will resume in the dose expansion phase.
Receives: Drug: Durvalumab; Drug: IRX-2 Regimen
Phase 2 - Dose ExpansionExperimental14 patients will be enrolled at the recommended dose level from the dose finding phase for a total enrollment of 20 patients; however, investigators will replace patients with any missing tumor sample collection and continue enrollment until there are at least 20 pre- and post-treatment paired tumors (i.e. minimum 2 of 3 tumors per patient). The 6 patients treated at the recommended dose in the dose finding phase of the study will be counted as a part of the dose expansion patient population,
Receives: Drug: Durvalumab; Drug: IRX-2 Regimen

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Phase 1 - Maximum Tolerated Dose (MTD)

    MTD of combination of the IRX-2 regimen and durvalumab as outlined in treatment arm.

    Measured: Up to 12 months

Secondary outcomes (4)

  1. Phase 2 - Objective Clinical Response Rate

    Response to combination of the IRX-2 regimen and durvalumab . Objective response will be documented using standard Response Evaluation in Solid Tumors (RECIST) criteria.

    Measured: Up to 12 months post treatment

  2. Phase 2 - Progression-free Survival (PFS)

    Progression Free Survival of IRX-Dura treatment participants at six months. Progression free survival is defined as the time from Day 1 of treatment to evidence of progression. Progression will be defined by RECIST v 1.1.

    Measured: Up to 6 months post treatment

  3. Median Progression-free Survival

    Median Progression Free Survival of IRX-Dura treatment participants. Progression free survival is defined as the time from Day 1 of treatment to evidence of progression. Progression will be defined by RECIST v 1.1.

    Measured: Up to 12 months post treatment

  4. Median Overall Survival (OS)

    Median Overall Survival of IRX-Dura treatment participants. OS: The length of time from the start of treatment that participants are still alive.

    Measured: Up to 12 months post treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Dec 2017
  2. Study start21 Aug 2019
  3. Primary completion12 May 2022
  4. Study completion30 Jun 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
19 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03381183
Sponsor's protocol ID
MCC-19356
Other IDs
ESR-16-12571
Status last verified
Dec 2025
First submitted
18 Dec 2017
Last updated
5 Dec 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Park R, Li J, Slebos RJC, Chaudhary R, Poole MI, Ferraris C, Farinhas J, Hernandez-Prera J, Kirtane K, Teer JK, Song X, Hall MS, Tasoulas J, Amelio AL, Chung CH. Phase Ib trial of IRX-2 plus durvalumab in patients with recurrent and/or metastatic head and neck squamous cell carcinoma. Oral Oncol. 2024 Jul;154:106866. doi: 10.1016/j.oraloncology.2024.106866. Epub 2024 May 30.

    PubMed 38820888

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Durvalumab and IRX-2 Regimen in people with Squamous Cell Carcinoma and Squamous Cell Carcinoma of the Head and Neck, run by H. Lee Moffitt Cancer Center and Research Institute at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Phase 1 - Maximum Tolerated Dose (MTD) (time frame: Up to 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03381183, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Dec 2025; AzTrials last refreshed its copy on 7 Nov 2026.

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