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Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET in Diagnosing Patients With CEA Positive Cancer

Pilot Study: Detection of Carcinomas Using 64Cu-Labeled M5A Antibody to Carcinoembryonic Antigen (CEA)

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02293954
Enrollment
20
Registered
2014-11-19
Start date
2015-11-11
Completion date
2026-08-11
Last updated
2025-11-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer, Colon Cancer, Extrahepatic Bile Duct Cancer, Gallbladder Cancer, Gastrointestinal Cancer, Liver and Intrahepatic Biliary Tract Cancer, Lung Cancer, Metastatic Cancer, Pancreatic Cancer, Rectal Cancer, Thyroid Gland Medullary Carcinoma, Unspecified Adult Solid Tumor, Protocol Specific

Brief summary

This pilot clinical trial studies copper Cu 64 anti-carcinoembryonic antigen (CEA) monoclonal antibody M5A positron emission tomography (PET) in diagnosing patients with CEA positive cancer. Diagnostic procedures, such as copper Cu 64 anti-CEA monoclonal antibody M5A PET, may help find and diagnose CEA positive cancer that may not be detected by standard diagnostic methods.

Detailed description

PRIMARY OBJECTIVES: I. To determine the ability of 64Cu labeled M5A antibody (copper Cu 64 anti-CEA monoclonal antibody M5A) to localize CEA positive cancers (such as gastrointestinal, lung, medullary thyroid and breast cancers), as determined by PET imaging. SECONDARY OBJECTIVES: I. To characterize the frequency of titer of the human anti-human antibody (HAHA) response to 64Cu labeled M5A antibody. II. To determine the safety of administration of 64Cu labeled M5A antibody. OUTLINE: Patients receive copper Cu 64 anti-CEA monoclonal antibody M5A intravenously (IV) on day 0 and then undergo PET on day 1 and day 2. After completion of study, patients are followed up at 1 and 3 months.

Interventions

PROCEDUREradionuclide imaging

Given copper Cu 64 anti-CEA monoclonal antibody M5A IV

PROCEDUREpositron emission tomography

Undergo PET

OTHERlaboratory biomarker analysis

Correlative studies

OTHERpharmacological study

Correlative studies

DRUGCu 64 anti-CEA monoclonal antibody M5A IV

Cu 64 anti-CEA monoclonal antibody M5A IV

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
City of Hope Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have histologically confirmed primary or metastatic cancer; if biopsies were performed at an outside facility, the histology must be reviewed and confirmed by the Department of Pathology at the City of Hope * Patients must have tumors that produce CEA as documented by a current or past history of an elevated serum CEA above the institutional limit of normal, or by immunohistochemical methods; NOTE: Patients with colorectal cancer are exempt from this requirement since \> 95% are CEA positive * Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control or abstinence) prior to study entry and for six months following duration of study participation; should a woman become pregnant or suspect that she is pregnant while participating on the trial, she should inform her treating physician immediately * Patients must have a known site of disease; please note, for patients undergoing neoadjuvant therapy, this requirement must be met retrospectively prior to the start of neoadjuvant therapy; patients who are in radiological/clinical remission after neoadjuvant therapy, prior to infusion of radiolabeled antibody, are still eligible * Although not mandated by the protocol, the results of the CT scan and labs (complete blood count \[CBC\], comprehensive metabolic panel \[CMP\]) that are performed as part of the standard work up should be available and should have been done within 2 months prior to study entry * All subjects must have the ability to understand and the willingness to sign a written informed consent * Prior therapy (chemotherapy, immunotherapy, radiotherapy) must be completed at least 2 weeks prior to infusion of radiolabeled antibody

Exclusion criteria

* Patients should not have any uncontrolled illness including ongoing or active infection * History of allergic reactions attributed to compounds of similar chemical or biologic composition to copper Cu 64 anti-CEA monoclonal antibody M5A (64Cu-M5A) * Patients must not have received prior chemotherapy or radiation for \>= 2 weeks before study enrollment * Pregnant women are excluded from this study; breastfeeding should be discontinued is the mother is treated with 54Cu-m5A * Any patient who has had exposure to mouse or chimeric (human/mouse) immunoglobulin and has antibody to the M5A * Subjects, who in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study

Design outcomes

Primary

MeasureTime frameDescription
Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 1At day 1Tumor uptake measured by SUVmax of 64Cu-DOTA-hT4.66-M5A at day1 for hottest lesion from each patient. For tumors of at least 2 cm in diameter SUV (=tumor activity concentration/injected activity per unit body weight).
Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 2At day 2Tumor uptake measured by SUVmax of 64Cu-DOTA-hT4.66-M5A at day 2 for hottest lesion from each patient. For tumors of at least 2 cm in diameter SUV (=tumor activity concentration/injected activity per unit body weight).

Secondary

MeasureTime frameDescription
Number of Participants With Human Anti-human Antibody (HAHA) Positive Response to 64Cu Labeled M5A AntibodyAt 1 and 3 months post study drug infusionApproximately 5 ml (1 teaspoon) of blood in a red top tube will be drawn at 1 month post study drug infusion and 3 months post study drug infusion. Response at either 1 or 3 months post study drug infusion constitutes a positive response.
The Average Increase of Tumor-to-blood (T:B) Ratio From Day 1 to Day 2At day 1 and day 2Scan results were compared to known sites of disease as defined by sites identified on CT scans, MRI scans, FDG PET scans, or sites identified at surgery that were histologically positive for cancer. The 64Cu SUVs on both day 1 and 2 scans were evaluated in tumors and selected nontumor organs and tissues (blood pool, liver, spleen, and kidney). Tumor uptake was measured in terms of SUVmax values, while organ uptake to assess biodistribution was measured in terms of SUVmean values. Ratios of tumor-to-blood activity concentration (T:B) were calculated as the ratio of tumor SUVmax to average SUV (SUVmean) measured in the blood pool.

Countries

United States

Participant flow

Participants by arm

ArmCount
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)
Patients receive 15 mCi/5 mg copper Cu 64 anti-CEA monoclonal antibody M5A IV on day 0 and then undergo PET on day 1 and day 2. radionuclide imaging: Given copper Cu 64 anti-CEA monoclonal antibody M5A IV positron emission tomography: Undergo PET Cu 64 anti-CEA monoclonal antibody M5A IV: Cu 64 anti-CEA monoclonal antibody M5A IV
20
Total20

Baseline characteristics

CharacteristicDiagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)
Age, Continuous57 years
Race/Ethnicity, Customized
Asian
4 Participants
Race/Ethnicity, Customized
Hispanic
6 Participants
Race/Ethnicity, Customized
Non-Hispanic White
10 Participants
Region of Enrollment
United States
20 participants
Sex: Female, Male
Female
6 Participants
Sex: Female, Male
Male
14 Participants
Tumor Stage @ Diagnosis
I
1 Participants
Tumor Stage @ Diagnosis
II
1 Participants
Tumor Stage @ Diagnosis
III
5 Participants
Tumor Stage @ Diagnosis
IV
11 Participants
Tumor Stage @ Diagnosis
Unknown
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 20
other
Total, other adverse events
20 / 20
serious
Total, serious adverse events
0 / 20

Outcome results

Primary

Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 1

Tumor uptake measured by SUVmax of 64Cu-DOTA-hT4.66-M5A at day1 for hottest lesion from each patient. For tumors of at least 2 cm in diameter SUV (=tumor activity concentration/injected activity per unit body weight).

Time frame: At day 1

ArmMeasureValue (MEDIAN)Dispersion
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 122.0 SUVmax (g/mL)Standard Deviation 16.9
Primary

Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 2

Tumor uptake measured by SUVmax of 64Cu-DOTA-hT4.66-M5A at day 2 for hottest lesion from each patient. For tumors of at least 2 cm in diameter SUV (=tumor activity concentration/injected activity per unit body weight).

Time frame: At day 2

ArmMeasureValue (MEAN)Dispersion
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)Tumor Uptake of 64Cu-DOTA-hT4.66-M5A at Day 230.7 SUVmax (g/mL)Standard Deviation 24.4
Secondary

Number of Participants With Human Anti-human Antibody (HAHA) Positive Response to 64Cu Labeled M5A Antibody

Approximately 5 ml (1 teaspoon) of blood in a red top tube will be drawn at 1 month post study drug infusion and 3 months post study drug infusion. Response at either 1 or 3 months post study drug infusion constitutes a positive response.

Time frame: At 1 and 3 months post study drug infusion

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)Number of Participants With Human Anti-human Antibody (HAHA) Positive Response to 64Cu Labeled M5A Antibody1 Participants
Secondary

The Average Increase of Tumor-to-blood (T:B) Ratio From Day 1 to Day 2

Scan results were compared to known sites of disease as defined by sites identified on CT scans, MRI scans, FDG PET scans, or sites identified at surgery that were histologically positive for cancer. The 64Cu SUVs on both day 1 and 2 scans were evaluated in tumors and selected nontumor organs and tissues (blood pool, liver, spleen, and kidney). Tumor uptake was measured in terms of SUVmax values, while organ uptake to assess biodistribution was measured in terms of SUVmean values. Ratios of tumor-to-blood activity concentration (T:B) were calculated as the ratio of tumor SUVmax to average SUV (SUVmean) measured in the blood pool.

Time frame: At day 1 and day 2

ArmMeasureGroupValue (MEAN)Dispersion
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)The Average Increase of Tumor-to-blood (T:B) Ratio From Day 1 to Day 2Day 26.5 T:BStandard Deviation 4.9
Diagnostic (Copper Cu 64 Anti-CEA Monoclonal Antibody M5A PET)The Average Increase of Tumor-to-blood (T:B) Ratio From Day 1 to Day 2Day 13.3 T:BStandard Deviation 2.7

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026