Combination Chemotherapy in Treating Patients With Lymphoma

OBJECTIVES:

- Compare the efficacy of early intensification vs alternating triple chemotherapy in
patients with intermediate-grade or immunoblastic lymphoma with poor prognostic
features.

- Compare, in a prospective manner, the cost/benefit ratio of these regimens in these
patients.

- Determine the value of monitoring minimal residual disease detection via in vitro
culture methods and polymerase chain reaction analysis of peripheral stem cell apheresis
products and by longitudinal monitoring of blood and bone marrow samples in these
patients treated with these regimens.

OUTLINE: This is a randomized study. Patients are stratified according to tumor score (3 or 4
vs 5 or 6).

During the first course of induction, patients receive IDSHAP comprising idarubicin (IDA) and
cisplatin IV continuously on days 1-4, cytarabine (ARA-C) IV over 2 hours on day 5, and
methylprednisolone (MePRDL) IV over 15 minutes on days 1-5. During the second course of
induction, patients receive MBIDCOS comprising vincristine, bleomycin, and cyclophosphamide
IV over 15 minutes on day 1, IDA IV continuously and MePRDL IV over 15 minutes on days 1-3,
methotrexate (MTX) IV over 2 hours on day 10, and oral leucovorin calcium every 6 hours on
days 11 and 12. Each course lasts 3 weeks in the absence of disease progression or
unacceptable toxicity.

Patients with stable or responding disease after induction are randomized to 1 of 2 treatment
arms.

Arm I

- Patients receive the following 3 courses of early intensification.

- First course: Patients receive ifosfamide (IFF) IV continuously and etoposide
(VP-16) IV over 2 hours every 12 hours on days 1-3. Filgrastim (G-CSF) is
administered subcutaneously (SC) beginning on day 5 and continuing until blood
counts recover and then autologous peripheral blood stem cells (PBSC) are
harvested, selected for CD34 positive cells, and purged in vitro. If more than 5%
of the WBC contains lymphoma cells after induction, then 2 courses of IFF and VP-16
are administered before PBSC harvest.

- Second course: Patients receive IFF IV continuously on days 1-3, mitoxantrone
(DHAD) IV on day 1, and G-CSF SC as in the first course.

- Third course: Patients receive carmustine IV over 1 hour on day -6, ARA-C and VP-16
IV every 12 hours on days -5 to -2, and melphalan IV on day -1. PBSC are reinfused
on day 0. G-CSF is administered SC beginning on day 0 and continuing until blood
counts recover. Each course lasts 3 weeks in the absence of disease progression or
unacceptable toxicity.

Arm II

- Patients receive IDSHAP during courses 2 and 5, MBIDCOS during courses 3 and 6, and IFF
and VP-16 IV over 1 hour on days 1-3 and DHAD IV over 15 minutes on day 1 during courses
1, 4, and 7. Each course lasts 4 weeks in the absence of disease progression or
unacceptable toxicity.

Patients with residual disease after completion of arm I or II treatment undergo radiotherapy
to areas of bulk disease if feasible. Patients on both arms with meningeal involvement
receive ARA-C intrathecally (IT) alternated with MTX every other day until 1 week after
clearing of CNS disease and then 2 IT injections during every course of chemotherapy
thereafter. Patients with divergent histology who achieve complete response after completion
of arm I or II treatment receive interferon alfa 3 times a week for 1 year.

Patients are followed at 1 month, every 3 months for 1 year, every 6 months for 1 year, and
then annually for 2 years.

PROJECTED ACCRUAL: A maximum of 136 patients will be accrued for this study within 4 years.

DISEASE CHARACTERISTICS:

- Diagnosis of previously untreated intermediate-grade or immunoblastic lymphoma

- Tumor score of 3 or greater, defined by the presence of 3 or more of the
following criteria :

- Ann Arbor stage III or IV disease

- B symptoms (fever, sweats, and weight loss greater than 10%)

- At least 1 tumor mass greater than 7 cm or mediastinal mass visible on plain
chest x-ray

- Beta-2 microglobulin at least 3.0

- Lactic dehydrogenase at least 1.1 times the upper limit of normal

- T- and B-cell lymphomas allowed if intermediate grade or immunoblastic

- Divergent histologies, including bone marrow involvement, allowed

- CNS involvement allowed NOTE: A new classification scheme for adult non-Hodgkin's
lymphoma has been adopted by PDQ. The terminology of "indolent" or "aggressive"
lymphoma will replace the former terminology of "low", "intermediate", or "high" grade
lymphoma. However, this protocol uses the former terminology.

PATIENT CHARACTERISTICS:

Age:

- 15 to 59

Performance status:

- Not specified

Life expectancy:

- Not specified

Hematopoietic:

- Not specified

Hepatic:

- Bilirubin less than 2.0 mg/dL (unless elevation due to lymphoma)

Renal:

- Creatinine no greater than 1.5 mg/dL (unless elevation due to lymphoma)

Cardiovascular:

- LVEF greater than 50% by echocardiogram if over age 45

- No congestive heart failure, angina, history of myocardial infarction, or arrhythmia
unless cleared by principal investigator after cardiology consultation

Pulmonary:

- No history of chronic obstructive or restrictive lung disease

- Pulmonary consultation required for smokers or patients with questionable lung
function

Other:

- HIV negative

- Not pregnant or nursing

- Fertile patients must use effective contraception

- No prior malignancy with poor prognosis (less than 90% probability of surviving for 5
years)

- No geographic, economic, emotional, or social condition that would preclude study

PRIOR CONCURRENT THERAPY:

Biologic therapy

- No prior biologic therapy

Chemotherapy

- No prior chemotherapy

Endocrine therapy

- No prior endocrine therapy

Radiotherapy

- No prior radiotherapy

Surgery

- Not specified