The purpose of this study is to compare the efficacy of cyclophosphamide plus dexamethasone combined with rituximab or bortezomib regimens in newly diagnosed Waldenström macroglobulinemia patients.

Newly diagnosed WM patients will be randomly assigned to BCD or RCD group for introduction chemotherapy. Chemotherapeutic response will be evaluated after 3 cycles. If a PR or better response achieves, addition 3 cycles will be given. If not, patients will be crossed to control group for another 3 cycles. If a PR or better response comes out, addition 3 cycles will be given, otherwise, the patients will quit this study.

Inclusion Criteria:

1. aged >=18 years
2. diagnosed with LPL/WM
3. untreated or mild treated without standard regimens,especially untreated with rituximab and/or bortezomib
4. symptom patients
5. with life-expectancy more than 3 months.

Exclusion Criteria:

1. diagnosed with other malignancies outside B-NHL within one year(including active center neural system lymphoma)
2. transformed lymphoma
3. liver or renal function lesion unrelated to lymphoma
4. serious complications such as uncontrolled diabetes,gastric ulcer or other serious angiocardiopathy determined by the physician
5. HIV positive or active HBV infection or other uncontrolled systematic infection
6. clinical central nervous dysfunction
7. serious surgery within 30 days
8. pregnancy or baby nursing period or un-contracepted child-bearing period woman; 9. allergy to the trail drugs.

we will make the data publicly available according to the local law