Phase II Trial of Weekly Bortezomib in Combination with Rituximab in Relapsed or Relapsed/Refractory Waldenstrom's Macroglobulinemia.

Abstract Abstract 2727 Poster Board II-703 INTRODUCTION: This study aimed to determine activity and safety of weekly bortezomib and rituximab in patients with relapsed/refractory Waldenstrom's Macroglobulinemia (WM). METHODS: Patients who had at least one previous therapy were eligible. All patients received bortezomib IV weekly at 1.6 mg/m2 on days 1, 8, 15, q 28 days x 6 cycles, and rituximab 375 mg/m2 weekly on cycles 1 and 4. Primary endpoint was the percent of patients with at least a minor response. RESULTS: Thirty-seven patients were treated. Majority of patients (78%) completed treatment per protocol. At least minimal response (MR) or better was observed in 81% (95% CI: [65,92]) with 2 patients (5%) in complete remission (CR)/near CR, 17 (46%) in partial response (PR), and 11(30%) in MR. The median time to progression was 16.4 months (95% CI, 11.4–21.1). Death occurred in 1 patient due to viral pneumonia. The most common grade 3 and 4 therapy related adverse events included reversible neutropenia in 16%, anemia in 11%, and thrombocytopenia in 14%. Grade-3 peripheral neuropathy occurred in only 2 patients (5%). The median event-free survival (EFS) is 12 months (95% CI, 11–20) with estimated 12 month and 18 month EFS of 49% (95% CI: [31, 67%]) and 38% (95% CI: [20, 56%]). The median overall survival has not been reached. CONCLUSIONS: The combination of weekly bortezomib and rituximab showed significant activity and minimal neurological toxicity in patients with relapsed WM. Disclosures: Ghobrial: Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Consultancy, Honoraria, Speakers Bureau; Novartis: Honoraria, Speakers Bureau. Anderson:Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Consultancy, Honoraria, Research Funding; Millennium: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Richardson:Millennium Pharmaceuticals, Inc.: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Johnson and Johnson: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Novartis: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Keryx: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; BMS: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Treon:Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Honoraria, Research Funding, Speakers Bureau; Genentech: Honoraria, Research Funding, Speakers Bureau. Matous:Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees; Cephalon: Membership on an entity's Board of Directors or advisory committees.

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Phase II Trial of Weekly Bortezomib in Combination with Rituximab in Untreated Patients with Waldenstrom's Macroglobulinemia.

Blood ◽

10.1182/blood.v114.22.3752.3752 ◽

2009 ◽

Vol 114 (22) ◽

pp. 3752-3752

Author(s):

Irene M. Ghobrial ◽

Swaminathan Padmanabhan ◽

Ashraf Z. Badros ◽

Renee Leduc ◽

Meghan Rourke ◽

...

Keyword(s):

Herpes Zoster ◽

Board Of Directors ◽

Research Funding ◽

Waldenström’S Macroglobulinemia ◽

Advisory Committees ◽

Minor Response ◽

Waldenstrom's Macroglobulinemia ◽

A Minor ◽

Waldenström's Macroglobulinemia

Abstract Abstract 3752 Poster Board III-688 INTRODUCTION This study aimed to determine activity and safety of weekly bortezomib and rituximab in patients with untreated Waldenstrom's Macroglobulinemia (WM). Prior studies using twice a week bortezomib in this population showed high responses, but significant neuropathy. METHODS Patients who had symptomatic WM and were not previously treated were eligible. All patients received bortezomib IV weekly at 1.6 mg/m2 on days 1, 8, 15, q 28 days x 6 cycles, and rituximab 375 mg/m2 weekly on cycles 1 and 4. Dexamethasone was not added. Primary endpoint was the percent of patients with at least a minor response. Patients were encouraged to receive herpes zoster prophylaxis but it was not mandated. RESULTS Twenty-six patients were treated. At least minimal response or better was observed, assessed using serum protein electropheresis, in 24/26 cases (92%) with 2 patients (8%) in complete remission (CR)/near CR, 15 (54%) in partial response (PR), and 7(27%) in minimal response (MR). Two patients (8%) had stable disease. By using IgM by nephlometry, all 26 patients (100%) had at least a minor response, with 2 (8%) CR, 15 (58%) in PR and 9 (35%) with minor response. The median time of follow up is 11.2 months (range, 3-18.6). To date, six (23%) patients have developed progressive disease or required a new therapy. A single patient has died due to disease progression. The median progression-free survival and overall survival have not been reached. The most common grade 3 and 4 therapy related adverse events included anemia in 3 patients, lymphopenia in 2 patients; neutropenia, leucopenia, thrombocytopenia, pneumonia, fatigue, allergic reaction and nausea and vomiting in 1 patient for each. Five patients developed grade 2 peripheral neuropathy including 4 did who did not have neuropathy at baseline. It required dose reductions in cycles 4 and 5 and these neuropathies resolved to grade 1 or less with follow up. One case developed grade 1 herpes zoster reactivation in cycle 1. CONCLUSIONS The combination of weekly bortezomib and rituximab showed significant activity and minimal neurological toxicity in patients with untreated WM. Disclosures: Ghobrial: Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Consultancy, Honoraria, Speakers Bureau; Novartis: Honoraria, Speakers Bureau. Anderson:Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Consultancy, Honoraria, Research Funding; Millennium: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Richardson:Keryx Biopharmaceuticals: Honoraria. Treon:Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Honoraria, Research Funding, Speakers Bureau; Genentech: Honoraria, Research Funding, Speakers Bureau. Matous:Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees; Cephalon: Membership on an entity's Board of Directors or advisory committees.

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A Phase II Trial of the Oral mTOR Inhibitor Everolimus (RAD001) in Relapsed or Refractory Waldenstrom's Macroglobulinemia.

Blood ◽

10.1182/blood.v114.22.587.587 ◽

2009 ◽

Vol 114 (22) ◽

pp. 587-587

Author(s):

Irene M Ghobrial ◽

Morie A Gertz ◽

Betsy LaPlant ◽

John Camoriano ◽

Suzanne R. Hayman ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Overall Response Rate ◽

Response Rate ◽

Single Agent ◽

Waldenström’S Macroglobulinemia ◽

Advisory Committees ◽

Overall Response ◽

Waldenstrom's Macroglobulinemia ◽

Waldenström's Macroglobulinemia

Abstract Abstract 587 Background: The phosphatidylinositol 3-kinase/mammalian target of rapamycin (mTOR) signal transduction pathway controls cell proliferation and survival. Everolimus is an oral agent targeting raptor mTOR (mTORC1). The trial's goal was to determine the anti-tumor activity and safety of single-agent everolimus in patients with relapsed/refractory Waldenstrom's macroglobulinemia (WM). Patients and Methods: Eligible patients had measurable disease (IgM monoclonal protein >1000 mg/dL with >10% marrow involvement or nodal masses >2 cm), a platelet count ≥75,000 × 106/L, a neutrophil count ≥1,000 × 106/L, and a creatinine and bilirubin ≤2x laboratory upper limit of normal. Patients received everolimus 10 mg PO daily and were evaluated monthly. Tumor response was assessed after cycles 2 and 6 and then every 3 cycles until progression. Results: 50 pts were treated. The median age was 63 years (range, 43-85). The overall response rate (CR+PR+MR) was 70% (95% CI: 55-82%), with a PR of 42% and 28% MR. The median duration of response and median progression-free survival (PFS) has not been reached. The estimated PFS at 6 and 12 months is 75% (95%CI: 64-89%) and 62% (95%CI: 48-80%), respectively. Grade 3 or higher related toxicities were observed in 56% of patients. The most common were hematological toxicities with cytopenias. Pulmonary toxicity occurred in 10% of patients. Dose reductions due to toxicity occurred in 52% of patients. Conclusions: Everolimus has high single-agent activity with an overall response rate of 70% and manageable toxicity in patients with relapsed WM, and offers a potential new therapeutic strategy for this patient group. Disclosures: Ghobrial: Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Consultancy, Honoraria, Speakers Bureau; Novartis: Honoraria, Speakers Bureau. Gertz:celgene: Honoraria; millenium: Honoraria, Membership on an entity's Board of Directors or advisory committees. Richardson:Millennium Pharmaceuticals, Inc.: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Johnson and Johnson: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Novartis: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Keryx: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; BMS: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Treon:Millennium: Honoraria, Research Funding, Speakers Bureau; Celgene: Honoraria, Research Funding, Speakers Bureau; Genentech: Honoraria, Research Funding, Speakers Bureau. Witzig:Novartis: Research Funding.

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Enzastaurin in Previously Treated Waldenstrom's Macroglobulinemia: An Open-Label, Multicenter, Phase II Study.

Blood ◽

10.1182/blood.v114.22.3867.3867 ◽

2009 ◽

Vol 114 (22) ◽

pp. 3867-3867

Author(s):

Irene M Ghobrial ◽

Jean-Luc Harousseau ◽

Steven P Treon ◽

Brianna Harris ◽

Courtney E Lin ◽

...

Keyword(s):

Board Of Directors ◽

Phase Ii ◽

Waldenström’S Macroglobulinemia ◽

Two Stage ◽

Advisory Committees ◽

Minor Response ◽

Previously Treated ◽

Grade 3 ◽

A Minor ◽

Waldenström's Macroglobulinemia

Abstract Abstract 3867 Poster Board III-803 Background Enzastaurin is an oral serine/threonine kinase inhibitor that targets the PKC and PI3K/AKT pathways. Enzastaurin has demonstrated activity in preclinical models of multiple myeloma (MM) and Waldenstrom's macroglobulinemia (WM), and clinical studies suggest encouraging activity and a well-tolerated safety profile in a variety of hematologic cancers. We are conducting a multicenter, two (parallel) cohort, two-stage, phase II trial to determine whether further study of single-agent enzastaurin is warranted in patients with previously treated WM or MM. The primary objective is to assess the response rate (RR); secondary objectives include assessment of time to progression (TTP), safety, biomarkers, and the impact of adding dexamethasone to enzastaurin in patients with progressive disease (PD). Preliminary results for the WM cohort are reported here. Methods Eligible patients with WM and 1-5 prior therapies were enrolled and treated with 250 mg oral enzastaurin twice daily (1125-mg loading dose on day 1) in 28-day cycles. Patients continued for 8 cycles or until PD or unacceptable toxicity occurred. At the investigator's discretion, dexamethasone (20-40 mg po QD, days 1-4, 9-12, and 17-20 for 4 cycles; days 1-4 of each cycle thereafter) was added to enzastaurin in patients with PD. According to the Simon two-stage design, if 2 of the first 10 patients (in stage 1) experienced a minor response (MR) or better, then the study would be expanded to 29 patients (stage 2). Best response was determined according to the response assessment recommendations of the Third International Workshop on WM (IWWM). Adverse events were graded according to CTCAE version 3.0. Results Twenty-nine patients (7 females, 22 males) with WM were enrolled. The median age was 65.6 years (range: 51.7-82.3 years) and 93% of patients had an Eastern Cooperative Oncology Group performance status of 0. Patients had a median of 2 prior systemic therapies and 26 patients (89.7%) had prior rituximab. Patients completed a median of 4 cycles. Six patients received ≥6 cycles of enzastaurin treatment. Twenty patients remain on study. There were no drug-related discontinuations. None of the patients had a complete response (CR). One patient had a partial response (PR) and 7 patients had a minor response (MR), for a RR (CR+PR+MR) of 27.6%. Immunoglobulin M decreased by ≥25% in 11 patients. Three (10.3%) patients had a PD. One patient had a drug-related grade 3 wound complication; there were no other drug-related grade ≥3 toxicities. One patient died on study due to infection unrelated to enzastaurin. Conclusions Although the results are preliminary, enzastaurin appears to have activity and is well tolerated in patients with previously treated WM. The WM cohort was expanded to allow up to 50 patients to be treated on study. Disclosures: Ghobrial: Novartis: Honoraria, Speakers Bureau; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Millennium: Honoraria, Research Funding, Speakers Bureau. Lin:Eli Lilly and Company: Employment. Yuan:Eli Lilly and Company: Employment. Benhadji:Eli Lilly and Company: Employment. Wooldridge:Eli Lilly and Company: Employment. Leblond:Roche: Consultancy, Membership on an entity's Board of Directors or advisory committees; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria.

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Global Waldenström's Macroglobulinemia Patient-Derived Data Registry, Whimsical, Highlights Real-World Treatment Outcomes and COVID-19 Data

Blood ◽

10.1182/blood-2021-147720 ◽

2021 ◽

Vol 138 (Supplement 1) ◽

pp. 1343-1343

Author(s):

Ibrahim Tohidi-Esfahani ◽

Andrew Warden ◽

Elena Malunis ◽

Peter Liburdi deNardis ◽

Michelle Postek ◽

...

Keyword(s):

Real World ◽

Research Funding ◽

Waldenström’S Macroglobulinemia ◽

First Line ◽

Advisory Committees ◽

Eortc Qlq C30 ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Eortc Qlq ◽

Waldenström's Macroglobulinemia

Abstract Introduction: WhiMSICAL (Waldenström's Macroglobulinemia Study Involving CArt-wheeL) is the first global Waldenström's Macroglobulinemia (WM) registry capturing patient-derived data to complement scarce clinical trials data in this rare cancer (Tohidi-Esfahani et al, Am J Hematol 2021). The registry was interrogated to identify real-world first line treatment outcomes, quality of life (QoL) and coronavirus disease 2019 (COVID-19) data. Methods: The registry captures data through www.cart-wheel.org, an online rare cancer database, utilizing a tailored questionnaire developed by clinician and patient investigators. WM patients complete consent online, then enter symptom, pathology, treatment, QoL (EORTC QLQ-C30) and COVID-19 data, and can return to update their data on an ongoing basis. Recruitment is driven by social media messaging by the International Waldenström's Macroglobulinemia Foundation investigators. Time to next treatment (TTNT) was assessed from start of first therapy to start of second therapy. Patients without a documented second therapy were censored at the time of last edit to their account. COVID-19 questions included testing, disease severity, vaccination and impact on WM management. Results: As of July 2021, 558 patients from 20 countries have participated in the registry, predominantly from USA (50%), Australia (22%) and the UK (9%). Median age at diagnosis was 61 years (range 24-83) with male predominance (61%). 371 patients documented first-line therapies, with a total of 54 unique therapeutic combinations listed. The seven most common therapies were: bendamustine rituximab (BR, n=94), rituximab monotherapy (Rit., n=52), dexamethasone rituximab cyclophosphamide (DRC, n=33), ibrutinib (n=25), bortezomib dexamethasone rituximab (n=15), rituximab cyclophosphamide vincristine prednisolone (n=14) and chlorambucil (n=10). Comparison of TTNT was limited to the four most common first-line therapies: BR, Rit., DRC, with zanubrutinib (n=5) and ibrutinib plus rituximab (n=2) adding to the first line Bruton tyrosine Kinase inhibitor (BTKi) cohort (n=32). Median ages for the BR, BTKi, DRC and Rit. cohorts were 65, 66, 61 & 65 years, respectively. More patients in the BR cohort listed comorbidities (37%), with BTKi-treated patients reporting the least (19%). Pre-treatment disease burden (median IgM and hemoglobin) trended to being higher in the BR and DRC cohorts (figure 1B-D, IgM p=0.24, Hb p=0.27). At median follow up ranging from 31 to 39 months, BR had superior TTNT to DRC (median: not reached and 104 months, p=0.007, figure 1C) and Rit. (median 26 months, p < 0.0001, figure 1D), and trended to superiority compared to BTKi (median not reached, p=0.08, figure 1B). Median TTNT for the entire cohort (n=371) was 108 months (median follow up 55 months, figure 1A). Assessment of QoL was conducted in all patients (any line of treatment) and compared between patients currently on BTKi therapy (n=64) and patients not exposed to BTKi and treated within the last 12 months (n=84). The expanded BTKi cohort reported better QoL, with mean EORTC QLQ-C30 global scale of 82 ± 14.4 compared to the BTKi-naïve cohort mean 73.4 ± 20.9, p=0.005. This was despite more prior lines of treatment (median 2 [IQR 1-4] compared to 1 [IQR 1-1]; p<0.0001). 324 (58%) patients responded to the COVID-19 questions. 144/324 (44%) had undergone testing for COVID-19, with 11 (8%) returning a positive result; none after vaccination. Median length of symptoms was seven days (range 2-30), with two hospitalized, one requiring intensive care. Both hospitalized patients were on second line ibrutinib. Of 211 responses regarding vaccination status, 15 (7%) were not vaccinated, eight due to availability, five due to personal choice and two due to clinician advice. Regarding impact of the pandemic on their WM management, 5% had treatment schedule disruption and 53% reported reduced face-to-face consultations. Conclusion: The WhiMSICAL registry provides a scientifically robust and ethically approved portal for the patients' voice. The data highlight the real-world efficacy of combination chemoimmunotherapy, particularly first-line BR, and suggest a better QoL with BTKi than other therapies. As this global data platform grows, the breadth of data allows for new insights into WM with patient reported outcomes advancing knowledge and facilitating treatment decisions for clinicians and patients. Figure 1 Figure 1. Disclosures D'Sa: Sanofi: Honoraria; BeiGene: Honoraria, Research Funding; Janssen Cilag: Honoraria, Research Funding. Kersten: Roche: Consultancy, Honoraria, Other: Travel support, Research Funding; Miltenyi Biotec: Consultancy, Honoraria, Other: Travel support; Novartis: Consultancy, Honoraria, Other: Travel support; BMS/Celgene: Consultancy, Honoraria; Takeda: Research Funding; Kite, a Gilead Company: Consultancy, Honoraria, Other: Travel support, Research Funding; Celgene: Research Funding. Thomas: Acerta Pharma: Research Funding; Ascentage Pharma: Research Funding; BeiGene: Membership on an entity's Board of Directors or advisory committees; BMS: Research Funding; Pharmacyclics: Membership on an entity's Board of Directors or advisory committees; X4 Pharma: Research Funding; Genentech: Research Funding. Palomba: Ceramedix: Honoraria; Rheos: Honoraria; Nektar: Honoraria; Priothera: Honoraria; Lygenesis: Honoraria; WindMIL: Honoraria; Wolters Kluwer: Patents & Royalties; Juno: Patents & Royalties; BeiGene: Consultancy; Kite: Consultancy; Magenta: Honoraria; Seres: Honoraria, Other: Stock, Patents & Royalties, Research Funding; PCYC: Consultancy; Notch: Honoraria, Other: Stock; Novartis: Consultancy; Pluto: Honoraria. Olszewski: Acrotech Pharma: Research Funding; Celldex Therapeutics: Research Funding; TG Therapeutics: Research Funding; PrecisionBio: Research Funding; Genentech, Inc.: Research Funding; Genmab: Research Funding. Trotman: PCYC: Research Funding; roche: Research Funding; BMS: Research Funding; TAKEDA: Research Funding; JANSSEN: Research Funding; beigene: Research Funding.

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International Phase III Study of Chlorambucil Versus Fludarabine As Initial Therapy for Waldenstrom's Macroglobulinemia and Related Disorders: Results in 414 Patients on Behalf of FCG CLL/ WM, GOELAMS, GELA, NCRI, ALLG

Blood ◽

10.1182/blood.v118.21.776.776 ◽

2011 ◽

Vol 118 (21) ◽

pp. 776-776 ◽

Cited By ~ 1

Author(s):

Veronique Leblond ◽

Julie Lejeune ◽

Olivier Tournilhac ◽

Pierre Morel ◽

marie Sarah Dilhuydy ◽

...

Keyword(s):

Overall Survival ◽

Board Of Directors ◽

Second Malignancies ◽

Waldenström’S Macroglobulinemia ◽

Advisory Committees ◽

Free Survival ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Waldenström's Macroglobulinemia ◽

Grade Iii

Abstract Abstract 776 Background: Waldenstrom's macroglobulinemia (WM) and related-disorders (Marginal Zone Lymphoma: MZL, and non immunoglobulin IgM lymphoplasmacytic lymphoma: LPL) are rare diseases Very few randomized trials were reported in this setting. Most commonly patients with WM are initially treated with an alkylating agent, such as chlorambucil (CBL) or with a nucleoside analogue such as fludarabine (F) or 2CdA, alone or in association with monoclonal antibody. Methods: WM1 study was a prospective international randomized open-label study that included patients with previously untreated WM MZL and LPL. At registration, patients were stratified as having WM, SLVL, or LPL, and were randomized in the two arms. The aim of the study was to compare the efficacy of oral CBL at a dose of 8 mg/m2 for 10 days every 28 days to a maximum of 12 cycles with oral F at a dose of 40 mg/m2 orally for 5 days every 28 days to a maximum of 6 cycles. 418 patients were enrolled into the study from 07/01 to12/09. 414 patients were included and 405 received at least one course of chemotherapy. There were 339 WM, 37 MZL and 38 LPL with a median age of 68 years (40-89). 207 patients were randomized in the F arm and 207 patients in the CBL arm. At inclusion, the median of haemoglobin (g/l), platelets (Giga/l), albumin (g/l) and beta 2 microglobulin (mg/l) were 9.9, 218, 37.1 and 3.47 respectively. Results: In intention to treat basis, the overall response rate (CR+PR) was 47.8 % in the F arm versus 38.6% in the CBL arm (p=0.06). With a median follow-up time of 35.9 months, the median of progression free survival time (PFS) and disease free survival (DFS) were statistically longer in the F arm: PFS 36.3m vs 27.1 m ( p=0.01) and DFS 38.3m vs 19. 9m (p= 0.0006). In WM group, factors influencing negatively PFS were CBL arm, albumin< 35g/l, platelets<100 G/l and age> 70 years. Main toxicity was haematological with 17/203 (8.3%) vs 18/203 (9%) of grade III- IV thrombocytopenia and 50/203 (24.6%) vs 39/202 (19.3%) of grade III-IV anemia in F and CBL arms respectively. Overall survival rate at 5 years was 61.4% [52.9;71.3] in CBL arm and 70.3% [62.7-78.8] in F arm (p=0.04) (Fig 1). Cumulative Incidence of second malignancies (solid tumors and haematological malignancies except Richter syndrome (RS)) was statistically higher in the chlorambucil arm (25 versus 8, p= 0.004) (Fig 2). The number of RS was 8 in F arm and 9 in CBL arm. Conclusion: F by oral route is a safe and effective ambulatory treatment in WM and close related disorders patients, even in the elderly and more effective than CBL with a duration of response over 3 years. An unexpected finding was a statistically higher number of second malignancies in the C arm and we cannot rule out an oncogenic role of CBL in this setting. Of note, we stress that it is the first time that a front- line treatment has a significant impact on overall survival in WM patients. Disclosures: Leblond: mundipharma: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; genzyme: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Roche: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Tournilhac:Amgen: Research Funding; Mundipharma: Membership on an entity's Board of Directors or advisory committees; GSK: Membership on an entity's Board of Directors or advisory committees.

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Long-lasting responses after four doses of rituximab in Waldenström's macroglobulinemia: Clinical value of minor responses: A follow-up of the Eastern Cooperative Oncology Group E3A98 trial

Journal of Clinical Oncology ◽

10.1200/jco.2009.27.15_suppl.8513 ◽

2009 ◽

Vol 27 (15_suppl) ◽

pp. 8513-8513

Author(s):

M. A. Gertz ◽

R. Abonour ◽

L. T. Heffner ◽

P. R. Greipp ◽

H. Uno ◽

...

Keyword(s):

Objective Response ◽

Progression Free Survival ◽

Waldenström’S Macroglobulinemia ◽

Minor Response ◽

Free Survival ◽

Previously Treated ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

A Minor ◽

Waldenström's Macroglobulinemia

8513 Background: Waldenström's macroglobulinemia is a low-grade lymphoplasmacytic lymphoma that is responsive to rituximab. Uniform response criteria define an objective response as a 50% reduction in the IgM level, and a minor response as a 25% reduction in IgM level. No publications in the literature exist that justify the use of the minor response. Clinicians who treat patients that achieve a minor response are left uncertain as to whether the response is adequate and patients should be monitored for progression or whether they should be considered therapy failures and crossover to an alternate chemotherapy regimen in an effort to achieve a deeper response. Methods: 69 patients, 34 previously untreated, and 35 previously treated (but rituximab naive) were included. All patients were treated with a single four-week course of rituximab 375 mg/m2 and were monitored with no further therapy until progression. Results: There were 19 objective and 17 minor responses out of 69 eligible patients (52.2%). Response rate and progression-free survival (26.6 mo) were similar whether patients were previously untreated or previously treated. Previously treated rituximab-naïve and previously untreated patients had, five-year survivals of 48% and 85%, respectively. There was no difference in overall or progression free survival between patients who achieved an objective response when compared to those who achieved a minor response. There was no difference between objective and minor responders by age, time from diagnosis to treatment in the treated group, bone marrow lymphoplasmacytes, hemoglobin level, creatinine, IgM level, or M-spike. The pre-treatment level of IgM did not predict overall survival, progression-free survival, time to progression, or response rate (All p>0.05). This lack of significance was found whether IgM was assessed as a continuous or discrete variable. Conclusions: These results reconfirm rituximab's efficacy as a single-agent for the treatment of Waldenström's macroglobulinemia, and patients who have a 25–50% reduction in their IgM protein derive significant clinical benefits that are durable and appear to not have an impact on overall survival. No significant financial relationships to disclose.

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Sildenafil citrate suppresses disease progression in patients with Waldenstrom’s macroglobulinemia

Journal of Clinical Oncology ◽

10.1200/jco.2006.24.18_suppl.7556 ◽

2006 ◽

Vol 24 (18_suppl) ◽

pp. 7556-7556 ◽

Cited By ~ 2

Author(s):

C. J. Patterson ◽

J. Soumerai ◽

Z. Hunter ◽

X. Leleu ◽

I. Ghobrial ◽

...

Keyword(s):

Disease Progression ◽

Maximum Tolerated Dose ◽

Preliminary Evidence ◽

Response To Therapy ◽

Sildenafil Citrate ◽

Waldenström’S Macroglobulinemia ◽

Minor Response ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Waldenström's Macroglobulinemia

7556 Background: Responses to sildenafil citrate (Viagra), a phosphodiesterase-5 inhibitor used to treat erectile dysfunction, have been observed in patients with Waldenstrom’s Macroglobulinemia (WM). Moreover, sildenafil citrate induces apoptosis of WM lymphoplasmacytic cells (Clin Lymphoma 5:205, 2004). We therefore conducted a prospective phase II study of sildenafil citrate in patients with slowly progressing WM who did not meet consensus eligibility for active therapy (Semin Oncol 2003; 30:116). Intended therapy was as follows: Week 1 25 mg po qD Week 2 50 mg po qD Week 3 75 mg po qD Week 4, then Months 2–24 100mg po qD or Maximum Tolerated Dose Methods: Thirty patients were enrolled, 18 of whom were previously untreated. All patients demonstrated progressing disease prior to enrollment. Median age was 66 (range 43–85 yrs), baseline BM involvement was 30% (range 5–90%), serum IgM was 3,640 (range 790–6,720 mg/dL), hematocrit was 37.1% (range 32.7–58.5%), and B2M was 2.3 (range 1.5–8.9 mg/dL). Patients were evaluable for response after 3 months of therapy. Results: At a median of 3 months, serum IgM levels declined in 19/30 (63%) patients from a median of 3,640 (range 790–6,720 mg/dL) to 2,965 (range 1,170–6,110 mg/dL). 5/30 patients (17%) demonstrated at least a minor response (≥25% IgM decrease). Two patients were taken off study for non-response to therapy. Toxicities were mild and included headaches, sinus congestion, facial flushing, dyspepsia, and generally resolved on their own with prolonged sildenafil citrate usage. Only two patients required dose modification to 25 mg and 75 mg po qD, respectively. Corollary studies to determine putative mechanisms of action for sildenafil citrate in WM were also performed and will be updated at the meeting. Conclusions: This prospective clinical trial provides preliminary evidence for activity of sildenafil citrate in patients with advancing WM. With minimal toxicity, sildenafil citrate appears to have suppressed disease progression in more than half of patients and has resulted in objective responses, thus warranting further investigation in WM and possibly other B-cell disorders. No significant financial relationships to disclose.

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Results of a Phase II Multicenter Study of Immunochemotherapy with Fludarabine, Cyclophosphamide and Rituximab (FCR) for Symptomatic Waldenstrom’s Macroglobulinemia

Blood ◽

10.1182/blood.v112.11.3692.3692 ◽

2008 ◽

Vol 112 (11) ◽

pp. 3692-3692

Author(s):

Alessandra Tedeschi ◽

Giulia Benevolo ◽

Marzia Varettoni ◽

Marta Battista ◽

Sara Miqueleiz ◽

...

Keyword(s):

Phase Ii ◽

Severe Neutropenia ◽

Waldenström’S Macroglobulinemia ◽

The Third ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Grade 3 ◽

Waldenström's Macroglobulinemia

Abstract Background: In Waldenstrom’s Macroglobulinemia (WM) the combination of Fludarabine (F) + Cyclophosphamide (C) induces response rates of 85% and 55–89% in previously untreated and relapsed/refractory pts, respectively. Rituximab (R) monotherapy is active and well tolerated in WM and there is evidence that R in association with chemotherapy may improve the quality of responses. Few studies with a small number of pts demonstrated the feasibility of FCR regimen in WM with responses ranging from 79% to 90%. Methods: in February 2005 we started a multicenter, two-stage design, phase II study on the effectiveness, tolerability and safety of FCR in symptomatic WM pts previously untreated or relapsed/refractory to one line of chemotherapy. Pts previously treated with FC combination or monoclonal antibodies were excluded. Treatment consisted of: R 375 mg/sqm d1, F 25 mg/sqm and C 250 mg/sqm iv d 2–4 every 4 weeks. Accrual of the planned 43 pts ended on March 2008. The first assessment of the disease, including bone marrow (BM) evaluation, was performed after the third FCR course. Pts with progressive disease (PD) were considered as failure, responding pts or those with SD went on to receive up to 3 further courses. Results: 18 females and 25 males, median age 65 yrs, were enrolled. Median time from diagnosis to FCR was 25.5 mos; 65% of pts were in first line treatment, 7% and 28% in relapsed and refractory disease, respectively. According to the International Scoring System for WM (ISSWM) 39.5% of pts were low risk, 51.2% intermediate and 9.3% high risk. As of August 10, 2008 analysis has been performed on 40 pts; final evaluation will be available in October 2008, since 3 pts completed treatment but response data are pending. A median of 6 courses (range 2–6) have been administered; 65% of pts received the planned 6 cycles. Reasons for not completing the 6 courses were: 1 PD, 1 hemolytic anemia, 1 hypersensitivity reaction to R, 8 severe neutropenia, 3 pneumonia. Thirty-six pts (90%) received ≥ 4 courses of therapy and have been considered valuable for response. As the protocol was designed before 2006, response criteria did not include MR and were categorized as follows: 14% CR, 69% PR, 14% SD, 3% PD (according to the updated criteria: 14% CR, 69% PR, 6% MR, 8% SD, 3% PD). Nine of the 25 patients in PR could be considered as in “near CR” as they fulfilled criteria for CR except for the persistence of a positive immunofixation. None of the patient and disease variables (age, sex, light chain, disease status, Hb, PLT and Ig level, % BM infiltration, b2m, albumin, creatinine, ISSWM) was significant for the achievement of a response. A comparison was performed between responses achieved after the third course and after the end of treatment. We observed that there was a significant improvement of responses (p=0.015) at last response assessment (5 CR+ 25 PR+ 5 SD+ 1 PD vs 2 CR+ 20 PR + 13 SD + 1 non evaluated after the third FCR course). Extrahematological toxicity was manageable and mostly limited to grade 1 and 2. An episode of grade 3 asthenia was reported. Twenty-one pts developed Rituximab-related reactions, grade 2 maximum, limited to the first or second infusion. In one case FCR treatment was interrupted because of grade 3 cutaneous hypersensitivity. Neutropenia occurring in 60% of courses was the main haematological toxicity, which caused the interruption of planned treatment in 20% of pts. Thirty-five percent of pts developed long lasting episodes of neutropenia (median duration 5 mos, range 3–15) mostly after 6 FCR courses (range 3–6). None of the clinical and disease characteristics analysed were statistically predictive of neutropenia development. Three episodes of pneumonia and 2 of FUO requiring hospitalization were observed during neutropenia. During follow-up we observed a late improvement of responses, as 3 further PR converted to CR (after a median of 10 mos), and 1 SD to PR (after 10 mos). Median DFS and OS have not been reached after a median follow-up of 15.1 and 20.4 mos, respectively. Conclusion: FCR produced a high ORR with good quality of responses, which improved over time. We registered, however, high incidence of neutropenia with long lasting neutropenic episodes limiting the administration of the planned therapeutic program. According to the analysis of our population it seems reasonable to reduce to four the number of planned FCR courses, administering, if required, Rituximab as consolidation/maintenance to avoid myelotoxicity.

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Combining Ixazomib With Subcutaneous Rituximab and Dexamethasone in Relapsed or Refractory Waldenström's Macroglobulinemia: Final Analysis of the Phase I/II HOVON124/ECWM-R2 Study

Journal of Clinical Oncology ◽

10.1200/jco.21.00105 ◽

2021 ◽

pp. JCO.21.00105

Author(s):

Marie José Kersten ◽

Karima Amaador ◽

Monique C. Minnema ◽

Josephine M. I. Vos ◽

Kazem Nasserinejad ◽

...

Keyword(s):

Overall Survival ◽

Phase I ◽

Progression Free Survival ◽

Immunoglobulin M ◽

Waldenström’S Macroglobulinemia ◽

Minor Response ◽

Free Survival ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Waldenström's Macroglobulinemia

PURPOSE Proteasome inhibitors are effective in Waldenström's macroglobulinemia (WM) but require parenteral administration and are associated with polyneuropathy. We investigated efficacy and toxicity of the less neurotoxic oral proteasome inhibitor ixazomib combined with rituximab, in patients with relapsed WM. METHODS We conducted a multicenter phase I/II trial with ixazomib, rituximab, and dexamethasone (IRD). Induction consisted of eight cycles IRD wherein rituximab was started in cycle 3, followed by rituximab maintenance. Phase I showed feasibility of 4 mg ixazomib. Primary end point for phase II was overall response rate (ORR [≥ minimal response]) after induction. RESULTS A total of 59 patients were enrolled (median age, 69 years; range, 46-91 years). Median number of prior treatments was 2 (range 1-7); 70% had an intermediate or high WM-IPSS (International Prognostic Scoring System for WM) score. After eight cycles, ORR was 71% (42 out of 59) (14% very good partial response [PR], 37% PR, and 20% minor response). Depth of response improved until month 12 (best ORR 85% [50 out of 59]: 15% very good PR, 46% PR, and 24% minor response). Median duration of response was 36 months. The average hematocrit level increased significantly (0.33-0.38 L/L) after induction ( P < .001). After two cycles of ixazomib and dexamethasone, immunoglobulin M levels decreased significantly (median 3,700-2,700 mg/dL, P < .0001). Median time to first response was 4 months. Median progression-free survival and overall survival were not reached. After median follow-up of 24 months (range, 7.4-54.3 months), progression-free survival and overall survival were 56% and 88%, respectively. Toxicity included mostly grade 2 or 3 cytopenias, grade 1 or 2 neurotoxicity, and grade 2 or 3 infections. No infusion-related reactions or immunoglobulin M flare occurred with use of subcutaneous rituximab. Quality of life improved significantly after induction. In total, 48 patients (81%) completed at least six cycles of IRD. CONCLUSION Combination of IRD shows promising efficacy with manageable toxicity in patients with relapsed or refractory WM.

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Bortezomib Is Active in Patients With Untreated or Relapsed Waldenström's Macroglobulinemia: A Phase II Study of the National Cancer Institute of Canada Clinical Trials Group

Journal of Clinical Oncology ◽

10.1200/jco.2006.07.8659 ◽

2007 ◽

Vol 25 (12) ◽

pp. 1570-1575 ◽

Cited By ~ 121

Author(s):

Christine I. Chen ◽

C. Tom Kouroukis ◽

Darrell White ◽

Michael Voralia ◽

Edward Stadtmauer ◽

...

Keyword(s):

Single Agent ◽

Complete Response ◽

Immunoglobulin M ◽

Waldenström’S Macroglobulinemia ◽

Total Response Rate ◽

Previously Treated ◽

Waldenstrom's Macroglobulinemia ◽

Waldenstrom’S Macroglobulinemia ◽

Grade 3 ◽

Waldenström's Macroglobulinemia

PurposeTo evaluate the efficacy and toxicity of single-agent bortezomib in Waldenström's macroglobulinemia (WM).Patients and MethodsSymptomatic WM patients, untreated or previously treated, received bortezomib 1.3 mg/m2intravenously days 1, 4, 8, and 11 on a 21-day cycle until two cycles past complete response (CR), stable disease (SD) attained, progression (PD), or unacceptable toxicity. Responses were based on both paraprotein levels and bidimensional disease measurements.ResultsTwenty-seven patients were enrolled. A median of six cycles (range, two to 39) of bortezomib were administered. Twenty-one patients had a decrease in immunoglobulin M (IgM) of at least 25%, with 12 patients (44%) reaching at least 50% IgM reduction. Using both IgM and bidimensional criteria, responses included seven partial responses (PRs; 26%), 19 SDs (70%), and one PD (4%). Total response rate was 26%. IgM reductions were prompt, with nodal responses lagging. Hemoglobin levels increased by at least 10 g/L in 18 patients (66%). Most nonhematologic toxicities were grade 1 to 2, but 20 patients (74%) developed new or worsening peripheral neuropathy (five patients with grade 3, no grade 4), a common cause for dose reduction. Onset of neuropathy was within two to four cycles and reversible in the majority. Hematologic toxicities included grade 3 to 4 thrombocytopenia in eight patients (29.6%) and neutropenia in five (19%). Toxicity led to treatment discontinuation in 12 patients (44%), most commonly because of neuropathy.ConclusionBortezomib has efficacy in WM, but neurotoxicity can be dose limiting. The slower response in nodal disease may require prolonged therapy, perhaps with a less intensive dosing schedule to avoid early discontinuation because of toxicity. Future studies of bortezomib in combination with other agents are warranted.

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