News | June 17, 2008

PET Identifies Patients Responsive to Non-Hodgkin’s Lymphoma Treatments

June 18, 2008 - Positron emission tomography (PET) could be an important tool for identifying non-Hodgkin’s lymphoma patients who are likely to respond well to treatment with 90 ibritumomab tiuxetan (IT)—the first radioimmunotherapy treatment approved for use by the FDA, said researchers at SNM’s 55th Annual Meeting.

PET imaging allows practitioners to identify patients who could be treated, predict how they would respond and identify relapses early in patients who have follicular lymphoma, a common type of slow-growing lymphoma.

“This study illustrates how PET could be used to advance the goal of personalized medicine—identifying and targeting the right treatment for each individual,” said Stefano Fanti, professor of nuclear medicine at the Policlinico S. Orsola–Università di Bologna in Bologna, Italy, and a researcher of this study. “The functional data provided by PET are essential for determining stages of cancer, detecting disease relapses and evaluating how patients respond to particular therapies. Our study clearly indicates that the next step—using PET for predicting how patients will respond to treatment—can be achieved.”

In the United States, about 65,000 new cases of non-Hodgkin’s lymphoma are diagnosed every year. The number of new cases is on the rise, especially among older people and people whose immune systems are not functioning normally. Those at risk include people who have had organ transplants and those with human immunodeficiency virus (HIV).

Non-Hodgkin's lymphomas are a diverse group of cancers that develop in B or T lymphocytes, which are white blood cells that normally defend the body against bacteria and other pathogens. This group of cancers is actually the cause of more than 20 diseases, which have distinct appearances under the microscope and different clinical courses. Most non-Hodgkin's lymphomas are from B cells.

IT is a monoclonal antibody used in conjunction with radioactive medications to treat non-Hodgkin’s lymphoma patients who have relapsed after treatment or for those with slow-growing forms of the disease such as follicular lymphoma. While there have been studies to investigate the usefulness of PET in patients with lymphoma and research into the effectiveness of radioimmunotherapy, no data were available regarding the role of PET in determining whether patients would be good candidates for IT.

In their study, Fanti and his team examined 38 non-Hodgkin’s lymphoma patients who were treated with IT after a relapse. PET scans were taken before IT treatment and then three months after treatment began. All patients had a final assessment at six months using clinical data.

Results indicated that the first set of PET scans detected the relapse and extent of the disease in all of the patients. At the six-month follow up, 89 percent of the patients were either in complete or partial remission after the IT treatment. Comparison of PET data on the extent of patients’ disease at relapse and their response after three months indicated a higher rate of response to the treatment in patients whose cancer was limited. In all of the cases, the findings of the PET scans at three months were consistent with the clinical findings at six months.

Scientific Paper 584: P. Castellucci, G. Montini, I. Santi, V. Ambrosini, R. Franchi, S. Fanti, Nuclear Medicine, Policlinico S. Orsola, Bologna, Italy; P. Zinzani, M. Tani, V. Stefoni, Haematology, Policlinico S. Orsola, Bologna, Italy; D. Rubello, Ospedale S. Maria della Misericordia, Rovigo, Italy; “FDG-PET in the Assessment of Patients with non-Hodgkin’s Lymphoma Treated by Ibritumomab Tiuxetan,” SNM’s 55th Annual Meeting, June 14–18, 2008.

For more information: www.snm.org

Related Content

International Working Group Releases New Multiple Myeloma Imaging Guidelines

X-ray images such as the one on the left fail to indicate many cases of advanced bone destruction caused by multiple myeloma, says the author of new guidelines on imaging for patients with myeloma and related disorders. Image courtesy of Roswell Park Comprehensive Cancer Center.

News | Computed Tomography (CT) | June 17, 2019
An International Myeloma Working Group (IMWG) has developed the first set of new recommendations in 10 years for...
A high-fidelity 3-D tractography of the left ventricle heart muscle fibers of a mouse

Figure 1. A high-fidelity 3-D tractography of the left ventricle heart muscle fibers of a mouse from Amsterdam Ph.D. researcher Gustav Strijkers.

News | Magnetic Resonance Imaging (MRI) | June 07, 2019
The Amsterdam University Medical Center has won MR Solutions’ Image of the Year 2019 award for the best molecular...
BGN Technologies Introduces Novel Medical Imaging Radioisotope Production Method
News | Radiopharmaceuticals and Tracers | June 05, 2019
BGN Technologies, the technology transfer company of Ben-Gurion University (BGU), introduced a novel method for...
RefleXion Opens New Manufacturing Facility for Biology-guided Radiotherapy Platform
News | Radiation Therapy | May 31, 2019
RefleXion Medical recently announced the opening of its new manufacturing facility at its headquarters in Hayward,...
Study Explores Magnetic Nanoparticles as Bimodal Imaging Agent for PET/MRI

Image courtesy of MR Solutions.

News | PET-MRI | May 23, 2019
Researchers from Bourgogne University in Dijon, France, showed that use of superparamagnetic iron oxide nanoparticles (...
New Phase 2B Trial Exploring Target-Specific Myocardial Ischemia Imaging Agent
News | Radiopharmaceuticals and Tracers | May 17, 2019
Biopharmaceutical company CellPoint plans to begin patient recruitment for its Phase 2b cardiovascular imaging study in...
Blue Earth Diagnostics Expands Access to Axumin in Europe
News | Radiopharmaceuticals and Tracers | May 13, 2019
Blue Earth Diagnostics announced expanded access to the Axumin (fluciclovine (18F)) imaging agent in Europe. The first...
NIH Study of Brain Energy Patterns Provides New Insights into Alcohol Effects

NIH scientists present a new method for combining measures of brain activity (left) and glucose consumption (right) to study regional specialization and to better understand the effects of alcohol on the human brain. Image courtesy of Ehsan Shokri-Kojori, Ph.D., of NIAAA.

News | Neuro Imaging | March 22, 2019
March 22, 2019 — Assessing the patterns of energy use and neuronal activity simultaneously in the human brain improve