LBH589 in Relapsed or Relapsed and Refractory Waldenstrom's Macroglobulinemia

Overall response rate is percentage of participants with complete (CR), very good partial (VGPR), partial (PR), or minimal response (MR) as best response during treatment. CR * Disappearance of monoclonal protein by immunofixation * No histologic evidence of bone marrow involvement * Resolution of any adenopathy/organomegaly (confirmed by CT scan), or signs or symptoms attributable to WM. * Second immunofixation required for confirmation. VGPR -At least 90% reduction of serum monoclonal IgM concentration on protein electrophoresis. PR * At least 50% reduction of serum monoclonal IgM concentration on protein electrophoresis and at least 50% decrease in adenopathy/organomegaly on physical examination or on CT scan. * No new symptoms or signs of active disease. MR * At least 25% but less than 50% reduction of serum monoclonal IgM by protein electrophoresis. * No new symptoms or signs of active disease.

Time frame: Assessed after 2nd cycle and then every subsequent cycle for 6 cycles. The median number of completed cycles of therapy was 5 (0- 32). As such observed up to ~32 months.

Acetylated-histone-H3 levels were obtained through bone marrow biopsies and measured using established methods. This analysis aimed to analyze the association between overall response and percent change of acetylated histone h3 in samples using a paired t-test.

Time frame: Bone marrow biopsies were obtained at the start of treatment (baseline) and after the 6th cycle.

Population: Only three complete sample (baseline and post-therapy) were ascertained. The difference in percentage of acetylated histone h3 were not large enough to conduct the correlative analysis.

Duration of response DR is defined as the time from the date of first response after treatment to the date of disease progression Patients who have died for any cause or are alive without progression are censored at the date the patient is last know to be progression-free. Duration of response DR is defined as the time from the date of first response after treatment to the date of disease progression or death for any cause. Patients who are alive without progression are censored at the date the patient is last know to be progression-free.

Time frame: Assessed after 2nd cycle and then every subsequent cycle for 6 cycles and then every 3 months. If taken off treatment at cycle 2 for disease progression, assessed every 3 months. The median (range) follow up from treatment start is 7.7 month (0.9 - 29.7).

Progression free survival (PFS) is defined as the time from start of treatment to disease progression or death from any cause as estimated by Kaplan Meier methods. Patients who have not progressed and are alive are censored at the date the patient is known to be progression-free.

Time frame: Assessed after 2nd cycle and then every subsequent cycle for 6 cycles and then every 3 months. If taken off treatment at cycle 2 for disease progression, assessed every 3 months. The median (range) follow up from treatment start is 7.7 month (0.9 - 29.7).

Time to progression (TTP) is defined as the time from start of treatment to progression. Patients who have not progressed are censored at the date the patient is last known to be progression free.

Time frame: Assessed after 2nd cycle and then every subsequent cycle for 6 cycles and then every 3 months. If taken off treatment at cycle 2 for disease progression, assessed every 3 months. The median (range) follow up from treatment start is 7.7 month (0.9 - 29.7).

Grade 3 thrombocytopenia is defined as having 25,000-50,000 /uL platelets Grade 4 thrombocytopenia is defined as having \< 25,000 /uL platelets

Time frame: Assessed after 2nd cycle, every subsequent cycle for 6 cycles and then every 3 months. Once off-treatment, adverse events will be assessed for 30 days. The median (range) number of completed cycles of therapy was 5 (0- 32). Therefore, up to ~33 months.