EPR Tumor Oximetry With CE India Ink

Tumor Oximetry Using Electron Paramagnetic Resonance (EPR) With India Ink (Using Carbon Particulates From Carlo Erba [CE])

It has been well established that malignant tumors tend to have low levels of oxygen and that tumors with very low levels of oxygen are more resistant to radiotherapy and other treatments, such as chemotherapy and immunotherapy. Previous attempts to improve response to therapy by increasing the oxygen level of tissues have had disappointing results and collectively have not led to changing clinical practice. Without a method to measure oxygen levels in tumors or the ability to monitor over time whether tumors are responding to methods to increase oxygen during therapy, clinician's reluctance to use oxygen therapy in usual practice is not surprising.

The hypothesis underlying this research is that repeated measurements of tissue oxygen levels can be used to optimize cancer therapy, including combined therapy, and to minimize normal tissue side effects or complications. Because studies have found that tumors vary both in their initial levels of oxygen and exhibit changing patterns during growth and treatment, we propose to monitor oxygen levels in tumors and their responsiveness to hyperoxygenation procedures. Such knowledge about oxygen levels in tumor tissues and their responsiveness to hyper-oxygenation could potentially be used to select subjects for particular types of treatment, or otherwise to adjust routine care for patients known to have hypoxic but unresponsive tumors in order to improve their outcomes.

The overall objectives of this study are to establish the clinical feasibility and efficacy of using in vivo electron paramagnetic resonance (EPR) oximetry-a technique related to magnetic resonance imaging (MRI)-to obtain direct and repeated measurements of clinically useful information about tumor tissue oxygenation in specific groups of subjects with the same types of tumors, and to establish the clinical feasibility and efficacy of using inhalation of enriched oxygen to gain additional clinically useful information about responsiveness of tumors to hyper-oxygenation. Two devices are used: a paramagnetic charcoal suspension (Carlo Erba India ink) and in vivo EPR oximetry to assess oxygen levels. The ink is injected and becomes permanent in the tissue at the site of injection unless removed; thereafter, the in vivo oximetry measurements are noninvasive and can be repeated indefinitely.

Study Overview

• Status: Terminated
• Conditions: Melanoma; Head and Neck Neoplasms; Carcinoma, Squamous Cell; Carcinoma, Basal Cell; Breast Neoplasm; Neoplasms, Malignant; Skin Neoplasm
• Intervention / Treatment: Device: Carlo Erba Ink Injection; Other: EPR Oximetry Measurement

Detailed Description

The study design uses consecutively enrolled patients. Patients can participate as long as they are willing, fit the criteria for being assigned to a cohort, and the India ink spot remains measurable by EPR. Patients whose ink spot is resected during usual care and who do not have or are not willing to obtain additional injections will be withdrawn. Otherwise, patients can be re-measured using the previously injected ink at any time during the course of the study.

The study is split into four cohorts, with a minimum of 1-5 patients expected to be enrolled annually in each cohort, and a total of approximately 10 subjects expected for each cohort. The cohorts are defined by the type of tumor and by scenarios when our measurements will be made relative to the patient's standard therapies: 1) intraoral tumors with planned resection and adjuvant radiation therapy; 2) cutaneous malignant tumors receiving surgical resection only, receiving radiation therapy only, or receiving both surgical resection and adjuvant radiation therapy; 3) breast tumor receiving radiation therapy following surgery; and 4) other tumors receiving radiation therapy. The diagnosis for patients in all cases assumes that an eligible tumor (or the postsurgical area receiving radiation) occurs within approximately one-half centimeter of the surface, as determined by physical exam or imaging if available. All potentially eligible subjects are approached by their treating physician; those who agree to be contacted and are subsequently consented are assigned to the cohort for which they qualify. There is no randomization and no stratification within the cohorts.

Our interest in in situ tumor oxygenation relates to the clinical need to measure oxygen in tumors prior to therapy, to understand tumor oxygen dynamics over the course of therapy, and to assess the effectiveness of oxygen modulation therapy during treatment. Our interest in the postsurgical radiation field relates to the clinical need to understand whether the temporal dynamics of oxygen within the postsurgical radiation field has the potential to enhance the effectiveness of adjuvant therapies, and to understand how changes in short and long term oxygenation within the postsurgical radiation field may facilitate diminishment of late side effects from surgery and/or radiotherapy.

Following enrollment in the study, each subject will receive an initial placement of one or more geographically separate injections of India ink into the tissue of interest (i.e., tumor and/or tumor bed and/or adjacent tissue) using the established procedures for the injection of the ink. The subject is expected to agree to periodic measurements of all injection sites (unless the ink injection has been surgically removed); the subject will be told to expect six or more visits for measurements during treatment, but must agree to have at least one measurement per injection site. Each measurement will typically consist of 3 ten minute consecutive periods during which the subject initially breathes room air, then 100% oxygen delivered through a non-rebreather face mask followed by a period breathing room air.

Patients will be evaluated during clinical and oximetry appointments with respect to the presence of any adverse events.

• Study Type: Observational
• Enrollment (Actual): 3

Contacts and Locations

Study Locations

• United States
  • New Hampshire
    • Lebanon, New Hampshire, United States, 03766
      • Dartmouth-Hitchcock Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Cancer patients with eligible tumors within 5mm of the surface, or that will be receiving postsurgical radiation following the resection of eligible tumors.

Description

Inclusion Criteria:

1. Subject must be capable of giving informed consent or has an acceptable surrogate capable of giving consent on behalf of the subject.

2. Subject has an eligible tumor that is within 5 mm of the surface (either skin or mucosa) or has had a tumor removed with a tumor bed that is within 5 mm of the surface.

   1. Eligible tumors types:

      • Intraoral tumors: squamous cell carcinoma (SCC), melanoma;
      • Primary cutaneous tumors (including, but not limited to): SCC, basal cell carcinoma (BCC,) melanoma;
      • Breast malignancies post surgery;
      • Other tumors: any tumor within 5 mm of the surface and with planned radiation therapy.

Exclusion Criteria:

1. Previous adverse reaction to a charcoal product e.g., a local hypersensitive response from a black tattoo or from ingestion of activated charcoal
2. Previous adverse reaction to the suspending agent
3. Subject has a pacemaker that is not known to be MRI compatible
4. Subject has a non-removable implant or device with metal that is not known to be MRI compatible
5. Subject is pregnant or has a likelihood for becoming pregnant during the basic study timeframe.

Note: There is no known harm to the woman or her fetus from participating; this is precautionary only.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

Number of groups / cohorts

4

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
1: Intraoral Squamous Cell Carcinomas; Intraoral squamous cell carcinomas that are resected and receive adjuvant radiation therapy. These patients may receive a Carlo Erba Ink injection before surgical tumor resection, after tumor resection (in the postsurgical radiation field), or in both instances. Patients whose tumor is within 5 mm of the surface will have injections of India ink into the tumor itself and measurements made in the tumor prior to surgery. Patients whose tumor is deeper than 5 mm of the surface could participate only in the measurements of the postsurgical radiation field. EPR Oximetry measurements will be made in the tumor and/or, if applicable, over the course of radiation in the postsurgical radiation field as appropriate.	Device: Carlo Erba Ink Injection; Carlo Erba India ink is used in this study as a paramagnetic oxygen sensor that is injected into tissue, and which, when measured using EPR Oximetry, can provide sensitive, repeated, and direct measurements of tissue oxygen. Each study participant will receive at least one ink injection of 20-50µL of Carlo Erba India Ink. The ink injection will occur within 5mm of the body surface (i.e., skin or mucosa), and may be injected into tumor, postsurgical field of radiation, and/or adjacent normal tissue. Carlo Erba Ink is an aqueous suspension composed of charcoal powder, water for injection, and a suspending agent. Carlo Erba is the name of the manufacturer that supplies the charcoal.; Other Names: Carbon particulate suspension; Charcoal suspension; Other: EPR Oximetry Measurement; An oximetry measurement visit consists of ~ 30 minutes of continuous scans of tissue oxygen in vivo, using an oxygen sensor (i.e., India ink) injected into the tumor that is noninvasively scanned using EPR oximetry. Scans, converted into measurements of pO2, characterize the current tumor oxygen level at: (1) 'steady state' (while breathing room air), 2) response to hyperoxygenation therapy (inhaling oxygen-enriched air for 10 min), and 3) response to resuming inhaling room air. EPR measurements are repeated noninvasively throughout radiation or chemotherapy, to examine changes. The minimum number of visits depends on the patient's cohort; all may have additional measurements. If the ink injection is not surgically removed, EPR oximetry measurements can be repeated indefinitely.; Other Names: Oxygen measurement; oximetry measurement
2: Cutaneous Malignant Tumors; Patients with primary cutaneous malignant tumors (including but not limited to squamous cell carcinoma, basal cell carcinoma, or melanoma) whose tumor is within 5 mm of the surface and whose treatment plan includes surgical resection and/or postsurgical radiation therapy. These patients may receive a Carlo Erba Ink injection before surgical tumor resection, after tumor resection (in the postsurgical radiation field), in both the tumor and the postsurgical radiation field, or in the tumor prior to radiation therapy. EPR Oximetry measurements will be made in the tumor and/or, if applicable, over the course of radiation in the tumor or postsurgical radiation field as appropriate.	Device: Carlo Erba Ink Injection; Carlo Erba India ink is used in this study as a paramagnetic oxygen sensor that is injected into tissue, and which, when measured using EPR Oximetry, can provide sensitive, repeated, and direct measurements of tissue oxygen. Each study participant will receive at least one ink injection of 20-50µL of Carlo Erba India Ink. The ink injection will occur within 5mm of the body surface (i.e., skin or mucosa), and may be injected into tumor, postsurgical field of radiation, and/or adjacent normal tissue. Carlo Erba Ink is an aqueous suspension composed of charcoal powder, water for injection, and a suspending agent. Carlo Erba is the name of the manufacturer that supplies the charcoal.; Other Names: Carbon particulate suspension; Charcoal suspension; Other: EPR Oximetry Measurement; An oximetry measurement visit consists of ~ 30 minutes of continuous scans of tissue oxygen in vivo, using an oxygen sensor (i.e., India ink) injected into the tumor that is noninvasively scanned using EPR oximetry. Scans, converted into measurements of pO2, characterize the current tumor oxygen level at: (1) 'steady state' (while breathing room air), 2) response to hyperoxygenation therapy (inhaling oxygen-enriched air for 10 min), and 3) response to resuming inhaling room air. EPR measurements are repeated noninvasively throughout radiation or chemotherapy, to examine changes. The minimum number of visits depends on the patient's cohort; all may have additional measurements. If the ink injection is not surgically removed, EPR oximetry measurements can be repeated indefinitely.; Other Names: Oxygen measurement; oximetry measurement
3: Breast Cancers; Breast cancer patients whose treatment plan includes surgical resection followed by radiation therapy. All patients who receive a surgical resection will receive a Carlo Erba Ink injection in the radiation field after sufficient healing has occurred to the area to be injected, as determined in consultation with the treating physicians, and using topical anesthetic or local anesthetic, if the patient so desires. All patients in this cohort will be expected to agree to a minimum of one EPR Oximetry measurement in the planned radiation field prior to radiation and a minimum of one measurement made over the course of radiation therapy.	Device: Carlo Erba Ink Injection; Carlo Erba India ink is used in this study as a paramagnetic oxygen sensor that is injected into tissue, and which, when measured using EPR Oximetry, can provide sensitive, repeated, and direct measurements of tissue oxygen. Each study participant will receive at least one ink injection of 20-50µL of Carlo Erba India Ink. The ink injection will occur within 5mm of the body surface (i.e., skin or mucosa), and may be injected into tumor, postsurgical field of radiation, and/or adjacent normal tissue. Carlo Erba Ink is an aqueous suspension composed of charcoal powder, water for injection, and a suspending agent. Carlo Erba is the name of the manufacturer that supplies the charcoal.; Other Names: Carbon particulate suspension; Charcoal suspension; Other: EPR Oximetry Measurement; An oximetry measurement visit consists of ~ 30 minutes of continuous scans of tissue oxygen in vivo, using an oxygen sensor (i.e., India ink) injected into the tumor that is noninvasively scanned using EPR oximetry. Scans, converted into measurements of pO2, characterize the current tumor oxygen level at: (1) 'steady state' (while breathing room air), 2) response to hyperoxygenation therapy (inhaling oxygen-enriched air for 10 min), and 3) response to resuming inhaling room air. EPR measurements are repeated noninvasively throughout radiation or chemotherapy, to examine changes. The minimum number of visits depends on the patient's cohort; all may have additional measurements. If the ink injection is not surgically removed, EPR oximetry measurements can be repeated indefinitely.; Other Names: Oxygen measurement; oximetry measurement
4: Other tumors; Other tumors within 5 mm of the surface, whose planned treatment includes radiotherapy of the tumor and does not include a planned resection of the tumor. As these other qualifying malignancies are expected to occur only rarely, they will be grouped into a single cohort despite potential varied histology. These patients will receive a Carlo Erba Ink injection in their tumor prior to radiation therapy. All patients in this cohort will be expected to agree to a minimum of one EPR Oximetry measurement in the planned radiation field prior to radiation and a minimum of one measurement made over the course of radiation therapy.	Device: Carlo Erba Ink Injection; Carlo Erba India ink is used in this study as a paramagnetic oxygen sensor that is injected into tissue, and which, when measured using EPR Oximetry, can provide sensitive, repeated, and direct measurements of tissue oxygen. Each study participant will receive at least one ink injection of 20-50µL of Carlo Erba India Ink. The ink injection will occur within 5mm of the body surface (i.e., skin or mucosa), and may be injected into tumor, postsurgical field of radiation, and/or adjacent normal tissue. Carlo Erba Ink is an aqueous suspension composed of charcoal powder, water for injection, and a suspending agent. Carlo Erba is the name of the manufacturer that supplies the charcoal.; Other Names: Carbon particulate suspension; Charcoal suspension; Other: EPR Oximetry Measurement; An oximetry measurement visit consists of ~ 30 minutes of continuous scans of tissue oxygen in vivo, using an oxygen sensor (i.e., India ink) injected into the tumor that is noninvasively scanned using EPR oximetry. Scans, converted into measurements of pO2, characterize the current tumor oxygen level at: (1) 'steady state' (while breathing room air), 2) response to hyperoxygenation therapy (inhaling oxygen-enriched air for 10 min), and 3) response to resuming inhaling room air. EPR measurements are repeated noninvasively throughout radiation or chemotherapy, to examine changes. The minimum number of visits depends on the patient's cohort; all may have additional measurements. If the ink injection is not surgically removed, EPR oximetry measurements can be repeated indefinitely.; Other Names: Oxygen measurement; oximetry measurement

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Measurement of oxygen levels in tissues in response to hyperoxic therapy	This study will assess whether the addition of hyperoxic therapy (100% oxygen delivered through a non-rebreather face mask) will increase the oxygen level of a tumor or tumor bed by > 5 mm Hg using EPR oximetry. Tumor oxygen values will be reported in millimeters of mercury (mmHg).	From time of ink injection to the time the ink is removed through surgical resection. This can range from days to years, or until the study's completion of enrollment, anticipated in 2020.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Characterize oxygen changes in tumor beds throughout the course of radiation therapy	This outcome will measure oxygen in the post-surgical tissue throughout the course of radiation therapy using EPR oximetry. Tissue oxygen values will be reported in millimeters of mercury (mmHg).	From time of ink injection through the completion of radiation therapy; an average of 4 months.
Characterize oxygen changes in tumors throughout the course of radiation therapy	This outcome will measure tumor tissue oxygen throughout the course of radiation therapy using EPR oximetry. Tissue oxygen values will be reported in millimeters of mercury (mmHg).	From time of ink injection through the completion of radiation therapy; an average of 4 months.
Characterize oxygen changes in tumor and tumor beds prior to radiation therapy	For those subjects receiving India ink injections in both the untreated tumor and in the post-surgical bed prior to radiation, we will examine patterns across these two 'states' in individual tumors, which can enhance our understanding of the relationship between the oxygen levels in the tumor and in the resulting tumor bed. Tissue oxygen values will be reported in millimeters of mercury (mmHg).	From time of ink injection through the completion of medical treatment for cancer; an average of 4 months.
Characterize oxygen changes in tumor and tumor beds through the course of radiation therapy	For those subjects receiving India ink injections in both the untreated tumor and in the post-surgical bed while undergoing radiation therapy, we will examine patterns across these two 'states' in individual tumors, which can enhance our understanding of the relationship between the oxygen levels in the tumor and in the resulting tumor bed. Tissue oxygen values will be reported in millimeters of mercury (mmHg).	From time of ink injection through the completion of medical treatment for cancer; an average of 6 months.

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Tissue Histology	For those subjects whose tumor is resected along with the tissue containing the India ink carbon particles as a part of their usual care, the tissue at the site of the injection will be submitted for processing with standard pathology procedures. Tissue sections spanning the injection site(s) will be evaluated for the extent and mechanism of dispersion and for the presence of acute or chronic inflammation or other tissue reaction (scar, fibrosis, capsule formation, or other). The tissue will be assessed as to whether the reaction observed is as expected for ink injections.	Approximately 30 days post-surgical excision of the tumor

Collaborators and Investigators

• Sponsor: Philip Schaner
• Collaborators: National Cancer Institute (NCI)
• Investigators: Principal Investigator: Philip E Schaner, M.D., Ph.D., Dartmouth-Hitchcock Medical Center

Publications and helpful links

General Publications

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Study record dates

Study Major Dates

• Study Start (Actual): August 30, 2017
• Primary Completion (Actual): October 27, 2019
• Study Completion (Actual): October 27, 2019

Study Registration Dates

• First Submitted: October 20, 2017
• First Submitted That Met QC Criteria: October 25, 2017
• First Posted (Actual): October 26, 2017

Study Record Updates

• Last Update Posted (Actual): December 19, 2019
• Last Update Submitted That Met QC Criteria: December 17, 2019
• Last Verified: December 1, 2019

More Information

Terms related to this study

• Keywords: Immunotherapy; Radiotherapy; Oxygen; Oximetry; ESR; Carbon; Electron Spin Resonance Spectroscopy; Charcoal; India Ink; EPR
• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms by Histologic Type; Neoplasms by Site; Neoplasms, Glandular and Epithelial; Breast Diseases; Neoplasms, Squamous Cell; Neoplasms, Basal Cell; Neoplasms; Breast Neoplasms; Head and Neck Neoplasms; Carcinoma; Carcinoma, Squamous Cell; Skin Neoplasms; Carcinoma, Basal Cell; Physiological Effects of Drugs; Protective Agents; Antidotes; Charcoal
• Other Study ID Numbers: 29880 D17008; P01CA190193 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No