Treatment and Natural History Study of Lymphomatoid Granulomatosis

Study Summary

This study will evaluate the response and long-term effects of alpha-interferon in patients with lymphomatoid granulomatosis (LYG). The disease causes proliferation of destructive cells involving the lungs, skin, kidneys, and central nervous system. Patients ages 12 and older who have LYG and who are not pregnant, or breast feeding may be eligible for this study. Alpha interferon or chemotherapy, or both, will be used. Alpha interferon is a protein the body naturally produces. If patients have grade 3 disease, they will usually receive etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (EPOCH)-rituximab (EPOCH-R) chemotherapy (each letter representing a drug). If patients have grade 1 or 2 disease, they will usually receive alpha interferon. If patients have LYG after receiving alpha interferon and/or EPOCH-R, they may receive rituximab alone or with alpha interferon. Rituximab is an antibody, binding to a specific molecule cluster of differentiation 20 (CD20) present on most B-cell lymphomas. Doses of several drugs in EPOCH-R may be increased if patients tolerated them in the previous cycle. If patients respond to EPOCH-R but still have low grade LYG, they may receive alpha interferon. Researchers will also try to obtain a biopsy of patient's lesions, to help in understanding the disease. Patients self-administer alpha interferon by injection under the skin three times weekly. They will visit the clinic every 2 to 12 weeks for follow-up. Patients will receive alpha interferon for 1 year after LYG goes away, depending on response. EPOCH-R has these drugs: rituximab by vein on Day 1; prednisone by mouth on Days 1 to 5; etoposide, doxorubicin, and vincristine as a continuous intravenous infusion on Days 1 to 5; and cyclophosphamide by intravenous injection over 1 hour on Day 5. Each cycle lasts 3 weeks: 5 days of chemotherapy and 16 days of no chemotherapy. Etoposide, doxorubicin, and vincristine are infused through a small pump worn by patients.

Primary Outcome

Overall response rate will be classified as the following: complete remission (CR), partial remission (PR), disease progression or disease stabilization measured by the Response Criteria. CR is no evidence of active disease on restaging for at least 2 months duration. All lesions must have decreased by \> 75%, be gallium or positron emission tomography (PET) negative (if obtained) and be stable for \> 3 months without new lesions appearing. PR is 50% or greater decrease in the sum of the product

Interventions

• PROCEDURE Tumor biopsy
• PROCEDURE Bone marrow biopsy
• BIOLOGICAL Interferon
• DRUG Rituxan and EPOCH
• BIOLOGICAL Bone marrow aspirate