A Phase 1/2 interventional study of EGFR Antisense DNA in Squamous Cell Carcinoma and Head and Neck Cancer, sponsored by The University of Texas Health Science Center at San Antonio. Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-09-21.
Sponsored by The University of Texas Health Science Center at San Antonio · Phase 1/2, Interventional, and Treatment
The incorporation of novel targeted therapies to radiation therapy is of particular interest in head and neck cancer and may improve efficacy without significantly increasing toxicity. The investigators hypothesize that the addition of a second EGFR-targeted agent that inhibits EGFR at the intracellular level will improve the antitumor effect of standard radiation and cetuximab. The goal of this study is to evaluate the safety, efficacy, and the biologic effects in patients with locally advanced SCCHN of an antisense gene targeting the EGFR in combination with standard therapy with radiation and cetuximab.
The Epidermal Growth Factor Receptor (EGFR) is highly expressed in SCCHN and its overexpression is associated with poor patient outcome. EGFR is a promising target of anticancer therapy. The investigators have developed EGFR antisense DNA as a safe and potentially efficacious treatment for SCCHN as shown in a previous phase I study conducted at the University of Pittsburgh. Cetuximab (Erbitux or C225) is a chimerized EGFR monoclonal antibody that has produced positive results in a phase III trial in SCCHN when added to radiation therapy and was approved by the FDA for the treatment of locally advanced SCCHN. Radiation plus cetuximab is considered a standard treatment, especially for patients who are not good candidates for chemotherapy. In the current study, the investigators plan to evaluate the addition of intratumoral EGFR antisense DNA (EGFR AS) to standard radiation with concurrent cetuximab in patients.
Objectives
Subject population
The investigators will enroll patients with SCCHN who are suitable for intratumoral injections of EGFR antisense.
Treatment plan
EGFR AS will be administered by direct intratumoral injection using direct visualization, endoscopy, or imaging-guidance (ultrasound) as clinically determined (see protocol). Patients will receive a total of up to 4 weekly intratumoral injections of EGFR antisense (or less if there is no identifiable tumor) starting 2 weeks prior to radiation (study schema in protocol). Patients will receive standard radiation 70 Gy/200 cGy/daily, 5 days/week, with concurrent cetuximab 250 mg/m2, after a loading dose of 400 mg/m2 2 weeks prior to starting radiation.
Statistical Design and Sample Size
The study will be conducted in two-stages. In the first stage, 11 patients with stage IVA-C or recurrent disease will be evaluated for safety. If the regimen is deemed safe, a total of 31 patients with stage III or IVA-B, previously untreated SCCHN will be enrolled in the second stage of the study.
6,741 studies on the registry are indexed under Carcinoma; 1,161 are open to participants now.
This study's enrollment of 6 is below the median of 45 across 5,170 interventional studies indexed under Carcinoma.
Browse Carcinoma studies →The University of Texas Health Science Center at San Antonio is the lead sponsor of 435 studies on the registry; 88 are open to participants now.
Of its 62 completed or terminated interventional studies of FDA-regulated products, 31 (50%) have results posted.
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Absolute neutrophil count above/equal to 1,000/µL Platelets above/equal to 75,000/µL Hemoglobin above/ equal to 10 g/dL Total bilirubin \<2 x upper normal institutional limits Creatinine clearance > 20 mL/min
Exclusion Criteria:
EGFR AS will be administered by direct intratumoral injection using direct visualization, endoscopy, or imaging-guidance (ultrasound) as clinically determined. Patients will receive a total of up to 4 weekly intratumoral injections of EGFR antisense (or less if there is no identifiable tumor) starting 2 weeks prior to radiation. Patients will receive standard radiation 70 Gy/200 cGy/daily, 5 days/week, with concurrent cetuximab 250 mg/m2, after a loading dose of 400 mg/m2 2 weeks prior to starting radiation.
Biological: EGFR Antisense DNA
EGFR AS will be administered by direct intratumoral injection using direct visualization, endoscopy, or imaging-guidance (ultrasound) as clinically determined. Patients will receive a total of up to 4 weekly intratumoral injections of EGFR antisense (or less if there is no identifiable tumor) starting 2 weeks prior to radiation. Patients will receive standard radiation 70 Gy/200 cGy/daily, 5 days/week, with concurrent cetuximab 250 mg/m2, after a loading dose of 400 mg/m2 2 weeks prior to starting radiation.
Toxicity Rate
This is a 2-stage clinical trial. In the first stage, toxicity will be the primary endpoint. Toxicity measures will be graded according to NCI CTCAE version 4.0. All AEs reported are grade 1 to grade 3 AEs.
Time frame: 1 year
Locoregional Progression-free Survival
In the second stage (phase II component), the primary endpoint will be locoregional progression-free survival (PFS) at 1 year measured from patient initial date of treatment to date of documented progression or date of death (in absence of progression).
Time frame: 1 year
Tumor Response
Clinical secondary endpoints include objective response rates, estimated by the proportion of patients with a best response of complete response (CR), partial response (PR), or stable disease (SD) by RECIST criteria, with corresponding exact 90% confidence limits.
Time frame: 5 years
Progression-free Survival
Progression-free survival (PFS) will be measured from initial date of treatment to date of documented progression or date of death (in absence of progression) and estimated by the Kaplan-Meier method with 90% confidence limits.
Time frame: 8 years and 10 months
Overall Survival
Overall survival (OS) will be measured from initial date of treatment to recorded date of death and will be estimated by the Kaplan-Meier method with 90% confidence limits.
Time frame: 5 years
Participants enrolled at two sites, University of Pittsburgh and University of Texas Health Science Center, San Antonio. Participants were followed to completion of treatment and then long-term follow up.
| Milestone | EGFR Antisense DNA |
|---|---|
| Started | 6 |
| Completed | 6 |
| Not completed | 0 |
| Milestone | EGFR Antisense DNA |
|---|---|
| Started | 6 |
| Completed | 5 |
| Not completed | 1 |
| Withdrew: Death | 1 |
This is a 2-stage clinical trial. In the first stage, toxicity will be the primary endpoint. Toxicity measures will be graded according to NCI CTCAE version 4.0. All AEs reported are grade 1 to grade 3 AEs.
| Number of adverse events | EGFR Antisense DNA |
|---|---|
| Toxicity Rate | 20 |
In the second stage (phase II component), the primary endpoint will be locoregional progression-free survival (PFS) at 1 year measured from patient initial date of treatment to date of documented progression or date of death (in absence of progression).
| Participants | EGFR Antisense DNA |
|---|---|
| Locoregional Progression-free Survival | 6 |
Clinical secondary endpoints include objective response rates, estimated by the proportion of patients with a best response of complete response (CR), partial response (PR), or stable disease (SD) by RECIST criteria, with corresponding exact 90% confidence limits.
No measurements were reported for this outcome.
Progression-free survival (PFS) will be measured from initial date of treatment to date of documented progression or date of death (in absence of progression) and estimated by the Kaplan-Meier method with 90% confidence limits.
No measurements were reported for this outcome.
Overall survival (OS) will be measured from initial date of treatment to recorded date of death and will be estimated by the Kaplan-Meier method with 90% confidence limits.
| Participants | EGFR Antisense DNA |
|---|---|
| Overall Survival | 5 |
Collected over Serious Adverse Events and Other (Not Including Serious) Adverse Events were monitored up to 5 years. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| EGFR Antisense DNA | 1/6 (16.7%) | 0/6 (0%) | 6/6 (100%) |
| Event | EGFR Antisense DNA |
|---|---|
| OdynphagiaGastrointestinal disorders | 3/3 |
| DysguesiaGastrointestinal disorders | 3/6 |
| HyperglycemiaEndocrine disorders | 2/6 |
| DiarrheaGastrointestinal disorders | 2/6 |
| HeadacheNervous system disorders | 1/6 |
| Neck burnsSkin and subcutaneous tissue disorders | 1/6 |
| ParotiditisGeneral disorders | 1/6 |
| Submadibular duct infectionInfections and infestations | 1/6 |
| Hot Flashes/sweatsGeneral disorders | 1/6 |
| DizzinessNervous system disorders | 1/6 |
| Age, Categorical(Participants) | EGFR Antisense DNA |
|---|---|
| <=18 years | 0 |
| Between 18 and 65 years | 4 |
| >=65 years | 2 |
| Age, Continuous(Years) | EGFR Antisense DNA |
|---|---|
| Mean | 66.5 (50 to 87) |
| Sex: Female, Male(Participants) | EGFR Antisense DNA |
|---|---|
| Female | 2 |
| Male | 4 |
| Race/Ethnicity, Customized(Participants) | EGFR Antisense DNA |
|---|---|
| Black or African American | 1 |
| White | 5 |
| Hispanic or Latino | 4 |
| Unknown or Not Reported | 2 |
| Region of Enrollment(participants) | EGFR Antisense DNA |
|---|---|
| United States | 6 |
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The University of Texas Health Science Center at San Antonio