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Leukemia & Lymphoma

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Vaccine May Help Fight Lymphoma

Vaccine Made From Patient's Own Tumor Cells Teaches Immune System to Fight Cancer
WebMD Health News
Reviewed by Louise Chang, MD

Sept. 19, 2006 -- A custom-made, experimental vaccine made from a patient's own tumor cells appears to dramatically increase remission time in people with a common form of non-Hodgkin's lymphoma, researchers in Spain report.

Twenty of the 25 patients with follicular lymphomalymphoma participating in the study showed an immune response after receiving the vaccination.

All of those responding patients had longer disease-free remissions than would have been expected without the experimental vaccinations. Most are still in remission.

The findings must be confirmed in larger studies. But the hope is that the targeted-vaccine approach will increase overall survival times in patients with the cancercancer.

"We will see in another five years what happens to these patients, and that should certainly tell us more," Maurizio Bendandi, MD, PhD, tells WebMD.

Teaching the Immune System

Follicular lymphoma is the most common type of slow-growing cancer of the lymphatic system, accounting for one in five non-Hodgkin's lymphomas diagnosed in the U.S.

The average survival for patients with the most advanced forms of the disease is seven to 10 years.

But despite its typically slow progression, the cancer is not generally curable with conventional treatments.

Chemotherapy, radiotherapy, and even other treatments that enlist the immune system have been shown to improve remission times in patients. But their impact on overall survival remains unclear.

Remission times typically become shorter and shorter with each relapse in such patients.

Researchers have been studying vaccines made from a patient's own tumor cells as a possible treatment strategy for lymphatic cancers for more than a decade.

The idea is that these custom-made vaccines can essentially teach the immune system how to recognize and kill cancerous cells.

The newly reported findings are described in the Sept. 20 issue of the Journal of the National Cancer Institute.

Most Patients Haven't Relapsed

The 25 patients in the study were in their first relapse following initial treatment with a widely used chemotherapy regimen.

All responded to a second course of chemotherapy, and all were also vaccinated periodically with the experimental vaccine over more than two years.

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