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Imaging Colo-rectal Cancer Using a Two Step Antibody Technique in Nuclear Imaging

This study has been completed.
Immunomedics, Inc.
Information provided by (Responsible Party):
Radboud University Identifier:
First received: September 15, 2005
Last updated: April 6, 2016
Last verified: April 2016
The purpose of this study is to test the safety of the peptide and antibody and at the same time evaluate the tumor imaging of a two step antibody technique in nuclear imaging.

Condition Intervention Phase
Colonic Neoplasms Drug: Indium labeled IMP-205xm734 Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Radioimmunodetection of CEA-Producing Tumors Using a Bispecific Antibody Pre-targeting Method and an In-Labeled Peptide

Resource links provided by NLM:

Further study details as provided by Radboud University:

Primary Outcome Measures:
  • Safety evaluation of intravenous injection of In-labeled IMP-205 and hMN-14xm734
  • Tumor targeting of In-IMP-205 in patients with colorectal carcinoma
  • Pharmacokinetics, biodistribution and dosimetry of In-IMP-205

Estimated Enrollment: 42
Study Start Date: July 2005
Study Completion Date: December 2008
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
Detailed Description:

Colo-rectal cancer has an incidence of 8000 cases per year in The Netherlands. Eventually 50% of them will die as a consequence of this disease.

Treatment consists of resection of the primary tumor, followed by adjuvant chemotherapy in some patients. The chemotherapeutical agents, however, are only moderately effective with regard to increase of survival. New treatment modalities are therefore desirable.

Radioimmunotherapy using radioactive labelled antibodies have proven to be effective in hematologic malignancies. Due to slow absorption in solid tumors however an effective radiation dose is not yet achieved.

The aim of our study is to bypass this slow tumor uptake by the use of pre-targeting. We therefore use an unlabeled bispecific antibody infusion. This will be followed several days later by the infusion of a radiolabeled peptide that binds to the bispecific antibody.

We hypothesise that this small peptide will be readily absorbed by the tumor which is pre-saturated by the bispecific antibody. As a consequence a higher radiation dose can be given with a lower toxicity.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • > 18 years of age
  • Histologic or cytologic diagnosis of colorectal cancer
  • Karnofsky performance status >70%

Exclusion Criteria:

  • Pregnant or lactating women
  • Severe anorexia
  • Active second primary malignancy
  • Chemotherapy or radiotherapy within four weeks of study entry
  Contacts and Locations
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Please refer to this study by its identifier: NCT00185081

Radboud University Medical Centre Nijmegen
Nijmegen, Gelderland, Netherlands, 6500 HB
Sponsors and Collaborators
Radboud University
Immunomedics, Inc.
Study Director: Wim Oyen, MD PhD Radboud University Medical Centre Nijmegen
  More Information

Responsible Party: Radboud University Identifier: NCT00185081     History of Changes
Other Study ID Numbers: PRISCO
Study First Received: September 15, 2005
Last Updated: April 6, 2016

Keywords provided by Radboud University:
colon cancer
colon-specific antigen,

Additional relevant MeSH terms:
Colonic Neoplasms
Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Immunologic Factors
Physiological Effects of Drugs processed this record on September 21, 2017