Updated Results of Phase 2 Study of Ruxolitinib in Combination with 5-Azacitidine in Patients with Myelofibrosis

Abstract Background: JAK1/2 inhibitor ruxolitinib (RUX) abrogates symptoms and organomegaly in patients with myelofibrosis (MF). Combination with azacitidine (AZA) may further improve its efficacy. Methods: We initiated a single institutional, single arm, prospective, phase 2 study of RUX AZA combination in adult patients with MF and < 20% blasts. Previous therapy with RUX or AZA was not allowed. RUX 5 - 20 mg orally twice daily was given continuously since cycle 1. AZA 25 - 75 mg/m2 on days 1 - 5 of each 28-day cycle was added starting cycle 4. Responses were assessed per International Working Group for Myelofibrosis Research and Treatment 2013 criteria (IWG-MRT). Enrollment cut-off for this analysis was December 31st, 2017 to allow > 6 months of follow-up for all enrolled patients. We plan to present updated results with additional 5 months of enrollment at the meeting. Results: Fifty two pts were enrolled on study between 03/2013-12/2017, and were evaluable for responses. Forty seven pts (84%) were treated with both agents (RUX and AZA), with a median of 25 cycles (range, 1-55). Median age was 66 years (range, 48-87). Thirty four pts (65%) had int-2/high DIPSS score, 40 pts (77%) had spleen ≥5 cm. Thirty pts (58%) were JAK2V617F positive. Among 36 pts tested for non-driver mutations (28-gene panel); 7 pts had ASXL1, 6 had TET2, 3 had IDH1/2 and 2 had EZH2 and TP53. After a median follow-up of 22+ months (range, 1-59+); 21 pts (40%) are on therapy with a median overall follow-up of 30+ months. The most common reasons for therapy discontinuation were elective stem cell transplantation (n=12), and uncontrolled disease (n=8), including progression to acute leukemia (n=4). Four pts (8%) primarily discontinued therapy due to drug related toxicity (cytopenias). Three treatment unrelated deaths occurred on study; one each due to sepsis, meningitis and metastatic melanoma. Thirty eight pts (73%) had objective response on a study (Table). Median time to response was 1.8 months (range, 0.7-19). Seven responses (21% of responders) occurred after the addition of AZA with a median time to response of 2 months. These responses included spleen and symptom clinical improvements in 26% and 16% of pts, respectively. In total, 26 (65%), and 23 (58%) pts had palpable spleen reduction by > 50% at any time on study, and at week 24, respectively. JAK2V617F allele reduction was noted in 13 (81%) of 16 evaluable pts. Thirty one pts (60%) had available bone marrow for sequential evaluation. Nineteen pts (61%) had a documented improvement in bone marrow fibrosis, collagen or osteosclerosis, with a median time to first response of 12 months (range, 6-18). The most common grade ≥3 non-hematologic toxicity on a study was infection (34%), constipation (21%), and nausea (14%). New onset of grade ≥3 anemia, thrombocytopenia and neutropenia occurred in 33%, 30% and 16% of pts, respectively. Conclusion: Concomitant RUX with AZA was feasible with overall IWG-MRT response rate of 73%, including >50% spleen reduction in 65% of pts. Moreover, 61% of pts achieved improvement in bone marrow fibrosis, collagen or osteosclerosis. ClinicalTrials.gov Identifier: NCT01787487. Table. Disclosures Verstovsek: Celgene: Membership on an entity's Board of Directors or advisory committees; Incyte: Consultancy; Italfarmaco: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Cortes:novartis: Research Funding. Pemmaraju:novartis: Research Funding; daiichi sankyo: Research Funding; Affymetrix: Research Funding; plexxikon: Research Funding; samus: Research Funding; celgene: Consultancy, Honoraria; abbvie: Research Funding; cellectis: Research Funding; stemline: Consultancy, Honoraria, Research Funding; SagerStrong Foundation: Research Funding. Bose:Blueprint Medicines Corporation: Research Funding; Incyte Corporation: Honoraria, Research Funding; Constellation Pharmaceuticals: Research Funding; Astellas Pharmaceuticals: Research Funding; Pfizer, Inc.: Research Funding; CTI BioPharma: Research Funding; Celgene Corporation: Honoraria, Research Funding. Daver:Pfizer: Consultancy; Novartis: Research Funding; ImmunoGen: Consultancy; Alexion: Consultancy; Incyte: Consultancy; Karyopharm: Research Funding; Sunesis: Research Funding; Otsuka: Consultancy; Novartis: Consultancy; Karyopharm: Consultancy; Sunesis: Consultancy; Daiichi-Sankyo: Research Funding; ARIAD: Research Funding; Incyte: Research Funding; Kiromic: Research Funding; Pfizer: Research Funding; BMS: Research Funding.

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Efficacy and Safety of Retreatment with Bortezomib in Patients with Multiple Myeloma: Interim Results From RETRIEVE, a Prospective International Phase 2 Study.

Blood ◽

10.1182/blood.v114.22.3866.3866 ◽

2009 ◽

Vol 114 (22) ◽

pp. 3866-3866 ◽

Cited By ~ 2

Author(s):

Maria Teresa Petrucci ◽

Igor W. Blau ◽

Paolo Corradini ◽

Meletios A. Dimopoulos ◽

Johannes Drach ◽

...

Keyword(s):

Board Of Directors ◽

Median Time ◽

Research Funding ◽

Phase 2 ◽

Efficacy And Safety ◽

Advisory Committees ◽

Bortezomib Treatment ◽

Best Response ◽

Phase 2 Study ◽

Grade 3

Abstract Abstract 3866 Poster Board III-802 Bortezomib (Velcade®) retreatment has been shown to be active and well tolerated in patients with relapsed multiple myeloma (MM) in a number of retrospective studies and a small prospective phase 4 study (EVEREST). This large, prospective, international, multi-center, open-label phase 2 study was conducted to confirm the efficacy and safety of retreatment with bortezomib in MM patients who had previously responded (at least partial response [PR]) to bortezomib-based therapy as their most recent prior treatment. Patients had to have previously tolerated bortezomib 1.0 or 1.3 mg/m2 alone or in combination and have had a treatment-free interval (TFI; time from last dose of initial bortezomib treatment to first dose of bortezomib retreatment) of ≥6 months. Additional eligibility criteria included progressive disease or relapse from complete response (CR) by EBMT criteria, no MM therapy (except maintenance with dexamethasone, thalidomide, or interferon) since the last dose of initial bortezomib treatment, KPS ≥60, and adequate renal, hepatic, and hematologic function; patients with grade ≥2 peripheral neuropathy or neuropathic pain (as defined by NCI CTCAE v3.0) were excluded. Patients received bortezomib at the last tolerated dose (1.0 or 1.3 mg/m2) during initial treatment on days 1, 4, 8, and 11 for up to eight 21-day cycles, either alone or in combination with dexamethasone at the investigator's discretion. Response was assessed by EBMT criteria every 6 weeks during treatment and then every 2 months until disease progression. Adverse events (AEs) were graded according to NCI CTCAE v3.0. A total of 130 patients received at least 1 dose of bortezomib retreatment and were included in the safety population. Patients had a median age of 67 years, 57% were male, and 16% had KPS '70%. Median time from diagnosis of MM was 4.5 years (range 0–14 years); median number of prior therapies was 2; 15, 80, 23, and 12 patients had received 1, 2, 3, and ≥4 prior lines of therapy (excluding initial bortezomib therapy). Best response by EBMT criteria to initial bortezomib treatment was CR in 26% and PR in 74% of patients; median time to progression and TFI after initial bortezomib treatment were 17.9 months and 14.3 months, respectively. Last tolerated dose of previous bortezomib therapy was 1.3 mg/m2 and 1.0 mg/m2 for 62% and 29% of patients, respectively; 9% received another dose. Patients received a median 7.0 (range 1–8) cycles of bortezomib retreatment (23% of patients completed all 8 cycles); 72% of patients received concomitant dexamethasone. A total of 126 patients were evaluable for response. In the 126 response-evaluable patients, the overall response rate (ORR; CR+PR) by best confirmed response (EBMT criteria) was 40%; in addition, 18% of patients achieved minimal response (MR), to give a CR+PR+MR rate of 58%. After a planned secondary efficacy analysis, the ORR (CR+PR) by single best response was 55% (75% ≥MR). Median time to best confirmed response (≥MR) was 2.9 months; time to first response was 1.5 months. Analysis of ORR by patient subgroups showed comparable results in patients who did versus did not receive concomitant dexamethasone (42% vs 32%), in those who received ≤1.0 mg/m2 vs 1.3 mg/m2 bortezomib (35% vs 41%), and in those aged ≤65 years vs >65 years (45% vs 36%). ORR was 67%, 39%, 33%, and 25% in patients who had received 1, 2, 3, and ≥4 prior lines of therapy (excluding initial bortezomib), respectively. Analysis of best confirmed responses according to response to initial bortezomib showed that 63% and 52% of patients who achieved a CR or PR, respectively, to initial bortezomib treatment responded to retreatment. Most (98%) patients experienced a treatment-emergent AE; 60% experienced a grade 3/4 AE, and 32% experienced a serious AE; there were 8 deaths, 2 of which (due to sepsis and stroke) were possibly treatment-related. The most common grade 3/4 AEs were thrombocytopenia (35%), neutropenia (7%), diarrhea (7%), and pneumonia (5%). AEs leading to dose reductions or discontinuations were reported for 22% and 12% of patients, respectively. The incidence of neuropathy was 39%, including 9% grade 3; 4% of patients discontinued treatment due to PN; 61% of neuropathy events resolved or improved within a median 1.3 months. These results confirm that bortezomib retreatment is a well-tolerated, feasible, and active therapeutic option for heavily pretreated MM patients without evidence of cumulative toxicity. Disclosures: Petrucci: Janssen-Cilag: Honoraria; Celgene: Honoraria. Dimopoulos:Ortho-Biotech: Consultancy, Honoraria; Millennium Pharmaceuticals, Inc.: Honoraria. Drach:Janssen-Cilag: Consultancy, Honoraria; Amgen: Honoraria; Celgene: Honoraria. Blade:Janssen-Cilag: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Honoraria; Johnson and Johnson: Honoraria; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding.

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Phase 2 Study of Nilotinib 400 Mg Twice Daily in Newly Diagnosed Patients with Accelerated Phase of Chronic Myeloid Leukemia, Results after 5.7 Years of Follow-up

Blood ◽

10.1182/blood-2018-99-120155 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 3011-3011 ◽

Cited By ~ 1

Author(s):

Lucia Masarova ◽

Jorge E. Cortes ◽

Keyur P. Patel ◽

Susan M. O'Brien ◽

Graciela M. Nogueras González ◽

...

Keyword(s):

Overall Survival ◽

Board Of Directors ◽

Research Funding ◽

Phase 2 ◽

Advisory Committees ◽

Free Survival ◽

Genetics Research ◽

Phase 2 Study ◽

Grade 3

Abstract OBJECTIVES Nilotinib is a potent, second generation inhibitor of BCR-ABL tyrosine kinase (TKI) and represent a standard of care for patients with chronic myeloid leukemia (CML), including accelerated phase (AP-CML). In 2005, we initiated a phase 2 study of nilotinib 400 mg twice daily as a frontline therapy in patients with AP-CML, and herein present the efficacy and safety data after a median follow-up of 68.4 months (range, 0.3-124.8). METHODS This was a prospective, single institution, phase 2 study in patients of age ≥18 years with a newly diagnosed, untreated AP-CML (except for <1 month of previous imatinib) defined according to MD Anderson criteria (Kantarjian, 1988). Patients were treated with nilotinib 400 mg twice daily (BID). Data are presented on an intention to treat analysis with a cutoff date of June 30st, 2018. Response criteria are standard. Fisher exact test and χ2 were used for analysis of categorical variables; and survival probabilities were estimated using the Kaplan-Meier method. Time to events (e.g., overall survival, event free survival) was calculated from the date of treatment to the date of an event or to last follow-up as previously reported (Cortes et al, 2010). RESULTS Twenty two patients of a median age of 53.7 years (range, 26-79.7) were enrolled. Table 1 summarizes clinical characteristics of all patients. The median treatment duration was 47.3 months (range; 0.3-124.4), and the median follow-up 68.4 months (range, 0.3-124.8). All patients discontinued study as of January 2017 due to planned study closure; but 11 patients (50%) continued on nilotinib off protocol at data cut-off (400 mg BID [3]; 300 mg BID [2]; and 200 mg BID [6]). Median time to treatment discontinuation in the remaining 11 patients was 12.9 months (range, 0.3-112); reason for discontinuation was: inadequate response [3], toxicity [2], non-compliance/financial [4]; elective discontinuation after sustained MR4.5 >2 years [1]; and death due to stroke [1]. Sixteen patients (73%) achieved complete hematologic response (CHR). Overall rates of CCyR, MMR, MR4.5 and CMR (undetectable transcripts with at least 100,000 ABL copies) were 73%, 73%, 55%, and 41%, respectively. Median times to CCyR, MMR, and MR4.5 were 2.9 months (range, 2.7-6.4), 5.7 months (range, 2.7-99.2) and 6.0 months (range, 2.7-36), respectively. Seven patients (32%) achieved sustained MR4.5 >2 years. In total, 4 patients lost their best achieved response (CHR [1], CCyR [2] and MR4.5 [1]) while on study. All events were associated with acquired ABL domain mutation; Y253H [2], T315I [1], and F359I [1] with a median time to detection of 16.7 months (range, 7-40). During the study conduct, one patient progressed to blast phase after 2 months on nilotinib. Two patients died while on study, one due to stroke and one due to unrelated medical condition, after being on therapy for 3 and 0.4 months, respectively. One patient electively discontinued nilotinib after being in sustained MR4.5 for 107 months, and remains in MR4.5 after 6 months off therapy. Estimated overall survival and event free survival at 5 years were 84% and 70%, respectively (Figures 1a & 1b). On univariate analysis, age >55 years was associated with lower rate of MMR (p = 0.034; HR 0.34; 95% CI 0.12-0.92); MR4 (p = 0.013; HR 0.25; 95% CI 0.08-0.75); and MR4.5 (p = 0.01; HR 0.15; 95% CI 0.04-0.63). Overall survival was inferior in patients older than 55 years (p = 0.014; HR 2.4; 95% CI 2.36-not estimated); and in those with > 1 AP-CML defining abnormality (p = 0.018; HR 9.53; 95% CI 0.98-92). The most frequent non-hematologic adverse events (AEs) were hyperbilirubinemia (63% of patients), rash (63%), hypertension (59%), and transaminitis (50%). Grade ≥3 AEs observed in more than one patient were hyperbilirubinemia (n=2), and transaminitis (=2). Two patients developed arterio-thrombotic AEs: stroke and myocardial infarction (one each). Hematologic AEs included (all grades; grade ≥3): anemia (36%; 9%), thrombocytopenia (32%; 14%) and neutropenia (14%; 9%). Two patients (9%) discontinued therapy due to nilotinib related AE, one for G3 peripheral neuropathy and one for G3 hyperbilirubinemia with G2 thrombocytopenia. CONCLUSION Nilotinib is safe and highly effective in patients with AP-CML, and induces fast and durable responses. More than 50% of patients can achieve MR4.5. Clinical trial.gov: NCT00129740. Disclosures Cortes: novartis: Research Funding. O'Brien:Pfizer: Consultancy, Research Funding; Janssen: Consultancy; Aptose Biosciences Inc.: Consultancy; Kite Pharma: Research Funding; Regeneron: Research Funding; Vaniam Group LLC: Consultancy; Amgen: Consultancy; Pharmacyclics: Consultancy, Research Funding; Celgene: Consultancy; Alexion: Consultancy; Abbvie: Consultancy; GlaxoSmithKline: Consultancy; Acerta: Research Funding; Gilead: Consultancy, Research Funding; Sunesis: Consultancy, Research Funding; Astellas: Consultancy; TG Therapeutics: Consultancy, Research Funding. Konopleva:Stemline Therapeutics: Research Funding; Immunogen: Research Funding; abbvie: Research Funding; cellectis: Research Funding. Verstovsek:Incyte: Consultancy; Celgene: Membership on an entity's Board of Directors or advisory committees; Italfarmaco: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Kadia:Celgene: Research Funding; Jazz: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Novartis: Consultancy; Abbvie: Consultancy; BMS: Research Funding; Novartis: Consultancy; Takeda: Consultancy; Celgene: Research Funding; BMS: Research Funding; Pfizer: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; Jazz: Consultancy, Research Funding; Abbvie: Consultancy; Takeda: Consultancy; Amgen: Consultancy, Research Funding. Ravandi:Macrogenix: Honoraria, Research Funding; Orsenix: Honoraria; Orsenix: Honoraria; Astellas Pharmaceuticals: Consultancy, Honoraria; Xencor: Research Funding; Sunesis: Honoraria; Bristol-Myers Squibb: Research Funding; Astellas Pharmaceuticals: Consultancy, Honoraria; Jazz: Honoraria; Abbvie: Research Funding; Bristol-Myers Squibb: Research Funding; Seattle Genetics: Research Funding; Macrogenix: Honoraria, Research Funding; Abbvie: Research Funding; Amgen: Honoraria, Research Funding, Speakers Bureau; Amgen: Honoraria, Research Funding, Speakers Bureau; Jazz: Honoraria; Sunesis: Honoraria; Xencor: Research Funding; Seattle Genetics: Research Funding.

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The MP0250-CP201 Mirror Study: A Phase 2 Study Update of MP0250 Plus Bortezomib and Dexamethasone in Relapse/Refractory Multiple Myeloma (RRMM) Patients Previously Exposed to Proteasome Inhibitors and Immunomodulatory Drugs

Blood ◽

10.1182/blood-2019-129827 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 1899-1899 ◽

Cited By ~ 2

Author(s):

Norbert Grząśko ◽

Stefan Knop ◽

Hartmut Goldschmidt ◽

Marc S Raab ◽

Jan Dürig ◽

...

Keyword(s):

Multiple Myeloma ◽

Bone Marrow ◽

Board Of Directors ◽

Research Funding ◽

Proteasome Inhibitors ◽

Immunomodulatory Drugs ◽

Phase 2 ◽

Advisory Committees ◽

Phase 2 Study ◽

Grade 3

Background Bone marrow neovascularization is a hallmark of multiple myeloma and progression is associated with a substantial increase in pro-angiogenic factors that promote bone marrow angiogenesis, including vascular endothelial growth factor (VEGF-A) and hepatocyte growth factor (HGF). At present, anti-angiogenic agents are not part of treatment strategies in multiple myeloma, neither alone nor in combination with approved agents. MP0250 is a first-in-class, tri-specific multi-DARPin® drug candidate neutralizing VEGF-A and HGF as well as binding to human serum albumin to increase plasma half-life. This is a report on early safety and efficacy of MP0250 in combination with bortezomib plus dexamethasone (Vd) in RRMM patients that have previously been exposed to proteasome inhibitors (PIs) and immunomodulatory drugs (IMiDs). Aims To assess the efficacy and safety of MP0250 in combination with bortezomib and dexamethasone in patients with RRMM (MiRRoR, NCT03136653). Trial Design This trial is recruiting adults ≥18 years of age with RRMM who have progressed after at least two prior treatment regimens including bortezomib and an IMiD. Patients were enrolled to receive iv MP0250 on day 1 + subcutaneous bortezomib 1.3 mg/m² on days 1, 4, 8, 11, oral dexamethasone 20 mg on days 1-2, 4-5, 8-9, 11-12 of each 21-day cycle. Patients will receive treatment until there is documented disease progression or unacceptable toxicity. Methods The primary endpoint is efficacy in terms of overall response rate (ORR) per International Myeloma Working Group criteria. Secondary endpoints include safety, immunogenicity, progression-free survival (PFS) and duration of response (DOR). Exploratory endpoints include overall survival, and pharmacokinetics. Exploratory biomarkers for HGF and cMET in bone marrow biopsies are detected by IHC; MM specific markers, circulating HGF and VEGF levels are measured using patient plasma samples. Results As of 01 July 2019, 20 patients (7 ongoing) received a total of 137 doses (1-33 cycles) of MP0250 at the maximum tolerated dose of 8 mg/kg on Day 1 of each 21-day cycle in combination with Vd. Median age was 61 years (46-76), median time since diagnosis was 6.7 years. Median number of prior therapies was 4 (range, 2-9). All 20 patients had prior exposure to IMiDs and PIs and 9 patients received PI-based regimens as their immediate prior line of therapy before start of MP0250 + Vd. Importantly, 6 out of these 9 patients achieved responses ≥ Partial Response (PR). Treatment had been discontinued in 40% of patients due to PD, 15% due to Adverse Event (AE), 5% due to physician's decision and in 1 case at patient's request. The most frequent drug-related grade 3/4 AEs were hypertension in 7/1 patients, thrombocytopenia in 4/1 patients, grade 3 proteinuria in 4 patients and grade 3 anemia in 4 patients. There were no infusion-related reactions. No treatment-related deaths were reported. 20 patients received ≥ 1 dose of MP0250 + Vd and had at least 1 assessment of response and were included in the efficacy analysis. 1 patient (5%) achieved Complete Response, 4 patients achieved Very Good Partial Response (20%) and 3 patients achieved PR (15%) for an ORR of 40%. DOR at cutoff date is 6 months (range, 2-21). Pharmacokinetic data show sustained exposure over multiple cycles with a mean half-life of 11 days (range, 6-17). No indication of ADA-mediated drug clearance was observed. Summary Combining MP250 at 8 mg/kg with standard doses of bortezomib and dexamethasone was generally well tolerated with discontinuation due to AE in only 15% of patients. No unexpected toxicity was observed and AEs consistent with the toxicity profile of the individual agents. Analysis of the preliminary efficacy results showed an encouraging ORR of 40%. Recruitment to this Phase 2 study is ongoing. Disclosures Knop: Janssen, AMGEN, Bristol-Myers Squibb, Celgene: Consultancy, Honoraria. Goldschmidt:Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Bristol-Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Amgen: Consultancy, Research Funding; John-Hopkins University: Research Funding; MSD: Research Funding; Sanofi: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Adaptive Biotechnology: Membership on an entity's Board of Directors or advisory committees; Janssen: Consultancy, Research Funding; John-Hopkins University: Research Funding; Chugai: Honoraria, Research Funding; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Dietmar-Hopp-Stiftung: Research Funding; Molecular Partners: Research Funding; Mundipharma: Research Funding; Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding. Dürig:Roche: Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel support; Celgene: Consultancy, Other: Travel or accommodations, Speakers Bureau. Bringhen:Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Janssen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Karyopharm: Membership on an entity's Board of Directors or advisory committees; Takeda: Consultancy; Bristol-Myers Squibb: Honoraria; Celgene Corporation: Honoraria, Membership on an entity's Board of Directors or advisory committees. Gamberi:Amgen: Honoraria; Celgene Corporation: Consultancy, Membership on an entity's Board of Directors or advisory committees; Janssen: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Sanofi: Consultancy, Membership on an entity's Board of Directors or advisory committees. Castellano Acosta:Molecular Partners AG: Employment. Lang:Molecular Partners AG: Employment. Lemaillet:Molecular Partners AG: Employment. Sudhir:Molecular Partners AG: Employment.

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Efficacy and Safety of Pomalidomide in Combination with Prednisone in Patients with Myelofibrosis and Anemia — Final Results of a Prospective Phase 2 Study

Blood ◽

10.1182/blood-2018-99-120203 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 1764-1764

Author(s):

Lucia Masarova ◽

Naval G. Daver ◽

Tapan M. Kadia ◽

Naveen Pemmaraju ◽

Elias J. Jabbour ◽

...

Keyword(s):

Board Of Directors ◽

Median Time ◽

Research Funding ◽

Hemorrhagic Stroke ◽

Phase 2 ◽

Efficacy And Safety ◽

Advisory Committees ◽

Phase 2 Study ◽

Prospective Phase

Abstract INTRODUCTION: Pomalidomide (POM) is a potent second-generation immunomodulatory agent that has been suggested to have a better toxicity and safety profile than thalidomide and lenalidomide. In patients with myelofibrosis (MF) and anemia, the combination of POM plus prednisone showed up to 36% responses per International Working Group for Myelofibrosis Research and Treatment criteria (IWG-MRT). OBJECTIVE: We present an efficacy and safety data of a prospective phase 2 study of POM in MF patients with anemia after a median follow up of 37.5 months (range, 2-98 months). This report substantiate on previously published results (Daver et al., Leuk Res, 2014; Daver et al., Leuk Res, 2013) and represents final analysis of the study. METHODS: Newly diagnosed or previously treated patients ≥ 18 years with MF and anemia (hemoglobin < 10 g/dL or transfusion [PRBC] dependency) in a need for therapy were eligible. Patients were treated with single POM 3 mg / daily (3 weeks on / 1 week off) or POM 0.5 mg daily continuously with prednisone taper for first 3 months. Responses were re-assessed according to IWG-MRT 2013 criteria. RESULTS: Seventy patients with MF (primary MF, n = 64) of median age of 68 years were enrolled between 07/2009 - 03/2013. Cohort with POM 3 mg (n=21) was closed after 3 months due to excessive toxicity (Daver et al, Leuk Res, 2013). Nine patients who remained on the therapy continued on POM 0.5 mg daily along with 49 additionally enrolled patients, accounting for 58 patients included in this analysis (Table 1). The median time on therapy was 7 months (range, 2-97 months); with 19 patients (33%) treated with more than 12 cycles. Median follow-up from enrollment to data cut-off (May 2018) was 32.5 months (range, 1-99). In total, IWG-MRT responses were identified in 9 patients (16%); only one of them was originally treated with POM 3 mg. The median time on study for responding patients was 16 months (range, 8-71 months). Responses included Clinical Improvement (CI) in hemoglobin in 3 patients (5%); PRBC independence in 6 (10% all, 26% of PRBC dependent patients), and CI spleen in 2 patients (3% all, 20% of patients with splenomegaly). Two patients achieved combined responses; CI spleen with CI hemoglobin and CI spleen with PRBC independence (1 each). Overall median response duration was 8.4 months (range, 3.7-30.3); and it was longer for PRBC independence (30.3 months; range, 8-30.3), and CI spleen (14 months; range, 13-15). Additional 13 patients (without achievement of IWG-MRT response) derived clinical benefit while on study and continued on therapy for a median of 24.5 months (range, 12-93). Observed benefit in these patients included improvement of thrombocytopenia [1], improvement of performance status and/or reduced frequency of PRBC [11], and disease stabilization [1]. One patient progressed to acute leukemia (AML) on a study after 7 cycles of therapy. The treatment was well tolerated with 26 patients (45%) experiencing at least one adverse event (AE) regardless of causality. The most frequent AE were neutropenia (12%); rash (10%); fatigue (10%); and gastrointestinal symptoms (diarrhea/constipation, nausea; 9%). Grade 3/4 AE occurred in 12 patients (21%). All enrolled patients discontinued study due to the following reasons: no response / loss of response [42]; progression to AML [1]; toxicity [4]; stem cell transplantation (SCT) [2]; patient's preference [4]; death [2]; unrelated medical conditions [3]. Reasons for treatment discontinuation due to drug related AE were thrombocytopenia in 2 patients, pneumonitis in 1 patient and allergic reaction in 1 patient. By the time of data cut-off, 43 patients (74%) died with 20 known causes of death: MF progression [4]; AML [2], other medical conditions [7], sepsis [3], myocardial infarction and hemorrhagic stroke [2 each], SCT complications and mesenteric artery ischemia [1 each]). Two of these deaths occurred while on a study; one due to hemorrhagic stroke and one of unknown cause after 31 and 42 months on study, respectively. CONCLUSION: Pomalidomide with prednisone is safe therapy with good anti-anemia activity in patients with MF. It could lead to transfusion independence in one third of patients for a median duration of about 30 months. ClinicalTrials.gov Identifier: NCT00946270. Table 1. Disclosures Daver: Alexion: Consultancy; ImmunoGen: Consultancy; Pfizer: Research Funding; Karyopharm: Research Funding; Otsuka: Consultancy; Novartis: Consultancy; ARIAD: Research Funding; Incyte: Consultancy; Pfizer: Consultancy; BMS: Research Funding; Sunesis: Research Funding; Daiichi-Sankyo: Research Funding; Sunesis: Consultancy; Kiromic: Research Funding; Incyte: Research Funding; Karyopharm: Consultancy; Novartis: Research Funding. Kadia:BMS: Research Funding; BMS: Research Funding; Abbvie: Consultancy; Pfizer: Consultancy, Research Funding; Takeda: Consultancy; Novartis: Consultancy; Novartis: Consultancy; Amgen: Consultancy, Research Funding; Takeda: Consultancy; Jazz: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; Celgene: Research Funding; Celgene: Research Funding; Pfizer: Consultancy, Research Funding; Abbvie: Consultancy; Jazz: Consultancy, Research Funding. Pemmaraju:plexxikon: Research Funding; Affymetrix: Research Funding; celgene: Consultancy, Honoraria; SagerStrong Foundation: Research Funding; samus: Research Funding; stemline: Consultancy, Honoraria, Research Funding; abbvie: Research Funding; cellectis: Research Funding; novartis: Research Funding; daiichi sankyo: Research Funding. Cortes:novartis: Research Funding. Verstovsek:Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Italfarmaco: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees; Incyte: Consultancy.

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A Phase 2 Study of Carfilzomib, Lenalidomide, and Dexamethasone with Lenalidomide Maintenance (KRd-r) in Newly Diagnosed Multiple Myeloma (NDMM): Sustained Long Term Deep Remissions and Prolonged Progression-Free Duration Regardless of Age or Cytogenetic Risk after 5 Years of Follow up

Blood ◽

10.1182/blood-2018-99-111712 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 1957-1957

Author(s):

Dickran Kazandjian ◽

Neha Korde ◽

Sham Mailankody ◽

Yong Zhang ◽

Jennifer Hsu ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Risk Profile ◽

Phase 2 ◽

Time To Progression ◽

Advisory Committees ◽

Phase 2 Study ◽

Grade 3

Abstract Background: State of the art treatment for patients with NDMM involves induction with triplet-based regimens utilizing combinations of immunomodulatory drugs and proteasome inhibitors (PI) which improve time to progression (TTP), progression-free survival, and overall survival (OS) over doublet regimens. Carfilzomib is a selective PI with FDA approval in the KRd combination regimen for the treatment of patients with relapsed or refractory MM. Carfilzomib-based combinations are associated with increased clinical benefit over bortezomib-based combinations and carfilzomib does not cause neuropathy. This phase 2 study of 45 patients demonstrated that deep responses with KRd-r is achieved in the NDMM setting (Korde et al. JAMA Onc 2015). Here, we expand on our initial results in assessing response to present the long-term durability of minimal residual disease negativity (MRDneg) complete response (CR) and time to progression. We also characterize TTP by depth of response, age, and cytogenetic risk profile. Methods:Treatment-naïve patients with MM were treated for 8 cycles (28-day cycles) with carfilzomib 20/36 mg/m2 IV days 1, 2, 8, 9, 15, 16; lenalidomide 25 mg PO days 1-21, and dexamethasone 20/10 mg IV/PO days 1, 2, 8, 9, 15, 16, 22, 23. Transplant eligible patients underwent stem cell collection after ≥4 cycles and then continued KRd treatment (i.e. without default autologous stem cell transplant (ASCT)). After 8 cycles of KRd, patients received 2 years of lenalidomide 10 mg PO maintenance on days 1-21. The primary objective of the study was to estimate the rate of ≥ Grade 3 peripheral neuropathy with secondary objectives of International Myeloma Working Group criteria for overall response rate (ORR), MRDneg CR, TTP, and response duration (DoR) assessed after every cycle during induction and subsequently after every 90 days of maintenance therapy. Assessment of MRDneg CR by multi-color flow cytometry (bone marrow aspirate; 10-5 sensitivity) was performed after 8 cycles of induction, 1 and 2 years of lenalidomide maintenance, and then annually. Results: Forty-five patients meeting eligibility criteria were enrolled (60% male; 42% ≥ age 65, range 40-89; race: 82% White, 13% Black, 4% Asian; isotypes: 51% IgG kappa, 16% IgG lambda, 13% IgA kappa, 9% IgA lambda, 9% free kappa, and 4% free lambda; 33% high risk cytogenetics, del(17p), t(4;14), t(14;16)or t(14;20)). The median potential follow up was 5.7 years (68.3 months). The ORR was 97.8% (95% Confidence Interval (CI): 88.2-99.9%) with a median DoR of 65.7 months (95% CI: 55.6-not reached (NR) months). Strikingly, 28 of the 45 patients, 62.2%, (95% CI: 46.5-76.2%) attained deep responses of MRDneg CR; durability of MRDneg CR was observed up to at least 70 months with a median duration of over 4 years (52.4 months; 95% CI: 35.3-61.6 months). Moreover, the median TTP was over five and a half years (67.3 months; 95% CI: 51.0-NR months) and the median OS was NR, however, at 80 months, 84.3% of patients were still alive. As expected, patients who attained MRDneg CR, by cycle 8, had a 78% reduction in the risk of progression (Hazard Ratio (HR): 0.22 (95% CI: 0.07-0.69); p=0.005) (Figure 1). Importantly, these deep responses of MRDneg CR and long progression free durations were observed regardless of age group or cytogenetic-based risk profile (Table 1). Toxicities have been previously reported and were generally manageable with no Grade ≥ 3 neuropathy or death due to toxicity. Conclusions: Upfront treatment of NDMM with the modern and highly efficacious KRd-r regimen incorporating a "by-default-delayed" ASCT strategy led to high rates of MRDneg CR (10-5 sensitivity) which even more importantly were sustained with a median duration of over 4 years. Moreover, attaining MRDneg CR, was strongly associated with a delay in progression. Clinically important, we observed that these deep responses and long progression-free durations are observed regardless of age or cytogenetic risk and stress the importance of utilizing highly efficacious triplet-based regimens for these sub-categories of NDMM. Lastly, our results with KRd-r in NDMM compare favorably to ASCT-based regimens and question the use of upfront ASCT for all patients. Our observed median TTP of 67 months is approximately 17 months longer than published data using the regimen of bortezomib, lenalidomide, and dexamethasone with ASCT (Attal et al. NEJM 2017). Updated results will be presented at the Annual Meeting. Disclosures Korde: Amgen: Research Funding. Mailankody:Janssen: Research Funding; Juno: Research Funding; Takeda: Research Funding; Physician Education Resource: Honoraria. Landgren:Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Celgene: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; Merck: Membership on an entity's Board of Directors or advisory committees; Karyopharm: Consultancy; Pfizer: Consultancy; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding.

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A Phase 2 Study of Cpi-0610, a Bromodomain and Extraterminal (BET) Inhibitor, in Patients with Myelofibrosis (MF)

Blood ◽

10.1182/blood-2018-99-119157 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 5481-5481 ◽

Cited By ~ 4

Author(s):

Marina Kremyanskaya ◽

Ronald Hoffman ◽

John Mascarenhas ◽

Srdan Verstovsek ◽

Jennifer Mertz ◽

...

Keyword(s):

Bone Marrow ◽

Board Of Directors ◽

Research Funding ◽

Inadequate Response ◽

Phase 2 ◽

Spleen Volume ◽

Bone Marrow Fibrosis ◽

Advisory Committees ◽

Phase 2 Study ◽

Marrow Fibrosis

Abstract MF is a myeloproliferative neoplasm characterized by abnormal megakaryocytes and elevated proinflammatory cytokines which results in bone marrow fibrosis, progressive hepatosplenomegaly due to extramedullary hematopoiesis, and debilitating constitutional symptoms. Current treatments, including ruxolitinib (the only approved drug for MF), provide symptomatic relief but have limited effects on the underlying disease. Effective therapies with potential MF disease course modification and second line therapies are urgently needed. CPI-0610 has been evaluated in 3 Phase 1 studies in > 140 patients with lymphoma, multiple myeloma and acute leukemias/myelodysplastic syndrome/MF. Although CPI-0610 was tested at doses as high as 400 mg PO QD, the maximum tolerated dose was 225 mg PO QD for 2 weeks on, 1 week off. Clear anti-tumor activity was observed in patients with lymphomas, particularly ABC-DLBCL (Blum et al. TAT conference 2018). Preclinical data on CPI-0610 demonstrated downregulation of pro-inflammatory cytokines through its effects on NF-κB pathway as well as inhibition of megakaryocyte differentiation. Both of these features are thought to be important in the pathogenesis of MF. In addition, a recent preclinical publication using a mouse model of MF, suggests that BET inhibition reduces inflammatory cytokine production, platelet counts, spleen volume and bone marrow fibrosis, the effects of which were further magnified when combined with ruxolitinib (Kleppe et al. 2018). Taken together, these data suggest that BET inhibitors such as CPI-0610, administered with and without ruxolitinib, have the potential to affect the underlying MF disease and supports further clinical evaluation of CPI-0610 in patients with MF. Therefore, we have embarked on a Phase 2 trial of CPI-0610 as monotherapy or in combination with ruxolitinib. This Phase 2 study aims to evaluate CPI-0610 as a monotherapy and in combination with ruxolitinib in patients with MF who are not eligible to receive a JAK inhibitor or have had an inadequate response to ruxolitinib. The primary objectives are to evaluate spleen volume response by imaging after 24 weeks of therapy and to evaluate the effect on transfusion independence rate. Other key secondary objectives are to evaluate the change in patient reported outcomes and the duration of splenic response. Exploratory objectives include characterizing the effects of treatment on the bone marrow and blood biomarkers. The Phase 2 study has a 2-stage design to enroll up to 35 patients in each arm (monotherapy and combination therapy) if ≥2 responses are observed during stage 1. The study is registered at ClinicalTrials.gov NCT02158858. Disclosures Kremyanskaya: Incyte: Research Funding. Hoffman:Formation Biologics: Research Funding; Summer Road: Research Funding; Incyte: Research Funding; Merus: Research Funding; Janssen: Research Funding. Mascarenhas:CTI Biopharma: Membership on an entity's Board of Directors or advisory committees, Research Funding; Roche: Research Funding; Incyte: Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Research Funding; Promedior: Research Funding; Merck: Research Funding; Janssen: Research Funding; Celgene: Membership on an entity's Board of Directors or advisory committees. Verstovsek:Italfarmaco: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Incyte: Consultancy; Celgene: Membership on an entity's Board of Directors or advisory committees. Mertz:Constellation Pharma: Employment. Garner:Constellation Pharma: Employment. Senderowicz:Constellation Pharma: Employment.

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Carfilzomib, Pomalidomide and Dexamethasone (KPd) in Patients with Multiple Myeloma Refractory to Bortezomib and Lenalidomide. the EMN011 Trial

Blood ◽

10.1182/blood-2018-99-114029 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 801-801 ◽

Cited By ~ 4

Author(s):

Pieter Sonneveld ◽

Sonja Zweegman ◽

Michele Cavo ◽

Kazem Nasserinejad ◽

Rosella Troia ◽

...

Keyword(s):

Multiple Myeloma ◽

Board Of Directors ◽

Median Time ◽

Research Funding ◽

Advisory Board ◽

Phase 2 ◽

Advisory Committees ◽

Grade 3 ◽

Advisory Role

Abstract Introduction and background The treatment of patients with Multiple Myeloma (MM) with relapse or progressive disease after bortezomib, lenalidomide and high-dose therapy represents an important challenge. In the EMN02 collaborative trial newly diagnosed patients with symptomatic MM were randomized to receive VCD induction followed by HDM/ASCT or VMP, followed by a second randomization for VRD consolidation or no consolidation, followed by lenalidomide maintenance until progression (Cavo et al, ASH2017, abstract #397; Sonneveld et al, EHA2018, abstract #108). The present Phase 2 trial was designed for patients with refractory disease or first progression after inclusion in EMN02 in order to evaluate a salvage treatment with next generation proteasome inhibition and IMId, i.e., Carfilzomib, Pomalidomide and Dexamethasone. The primary endpoints were response and progression-free survival (PFS). This trial is registered at www.trialregister.nl as NTR5349 and EudraCT 2013-003265-34. Methods Patients who were included received four 28-days re-induction cycles of KPd, i.e. Carfilzomib (20/36mg/m2, days 1,2,8,9,15,16) with Pomalidomide (4 mg days 1-21) and Dexamethasone (20mg days 1,2,8,9,15,16). In patients who had not previously received HDM/ASCT, HDM(200 mg/m2) was administered followed by autologous stem cell transplantation with stem cells harvested during after induction therapy in the EMN02 trial. Consolidation consisted of 4 additional cycles of KPd, identical to the induction cycles. Patients with stable disease or better received Pomalidomide 4mg w/o Dexamethasone in 28 days cycles until progression. Results At the time of this first planned interim analysis 82 patients were registered and this analysis was performed in the first 60 patients. 48% were randomized prior HDM/ASCT and 42% VMP, and 10% were not randomized. Prior best responses in the EMN02 trial were 35% CR/sCR , 75% ≥VGPR, 97% ≥PR. The median follow-up from inclusion in EMN02 was 43 months (range 21 - 62 months). In 44 patients cytogenetic risk were known, 15 (34%) of them had high-risk FISH (del17p, t(14;16) or t(4;14)). 57 fifty-seven (95%) of patients had progressed during lenalidomide maintenance, 3 patient's data are not yet available. In the present trial 38 (63%) of patients achieved normal completion of treatment according to of the protocol. Twenty patients received their first HDM plus ASCT. Median time on therapy was 14 months. Full dose re-induction treatment according to protocol could be administered in 68% (for Carfilzomib) and 64% (for Pomalidomide) of patients respectively, while for consolidation this was 62% for both Carfilzomib and Best response on protocol was 31% CR/sCR, 65% ≥VGPR, 87% ≥PR, respectively, with no difference according to response on initial treatments. Median time to response (≥PR) was 2 months. At a median follow-up of 16.3 months (range 3 - 32 months) median PFS was 18 months with better outcome in standard risk cytogenetics (HR=0.27 (0.09, 0.83) 95% CIs vs NR) and in patients with prior VMP treatment (HR=0.49 (0.21, 1.16) 95% CIs vs NR). 48 (80%) of patients are alive and in follow-up. KPd-emerging non-hematologic grade 3 and 4 adverse events included cardiovascular (5%), respiratory (5%), infections (20%) and neuropathy (3%). There were 3 fatal SAEs not related to progression (1 patient cardiac failure, 2 patients pneumonia). KPd-emerging hematological toxicity grade 3 and 4 occurred in 30% of patients. Discussion This Phase 2 clinical trial demonstrates that KPd is a feasible, effective and safe triple drug regimen in RRMM patients who have been previously treated and/or are refractory to bortezomib and refractory to lenalidomide. A 87% overall response rate including 31% CR/sCR is clinically relevant in this population. Since median OS has not been reached, longer follow-up is needed. Acknowledgments This trial was conducted as an investigator sponsored trial in EMN and supported by independent grants and drug supply from Amgen and Celgene. Disclosures Sonneveld: BMS: Honoraria, Research Funding; Karyopharm: Honoraria, Research Funding; Amgen: Honoraria, Research Funding; Celgene: Honoraria, Research Funding; Janssen: Honoraria, Research Funding. Zweegman:Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Celgene Corp.: Membership on an entity's Board of Directors or advisory committees, Research Funding; Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Janssen: Membership on an entity's Board of Directors or advisory committees, Research Funding. Cavo:Takeda: Honoraria, Membership on an entity's Board of Directors or advisory committees; Adaptive Biotechnologies: Honoraria, Membership on an entity's Board of Directors or advisory committees; AbbVie: Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Bristol-Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees; GlaxoSmithKline: Honoraria, Membership on an entity's Board of Directors or advisory committees; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Corradini:Roche: Honoraria, Other: Advisory Board & Lecturer; Gilead: Honoraria, Other: Advisory Board & Lecturer; Takeda: Honoraria, Other: Advisory Board & Lecturer; Novartis: Honoraria, Other: Advisory Board & Lecturer; Sandoz: Other: Advisory Board; Amgen: Honoraria, Other: Advisory Board & Lecturer; Abbvie: Honoraria, Other: Advisory Board & Lecturer; Janssen: Honoraria, Other: Lecturer; Sanofi: Honoraria, Other: Advisory Board & Lecturer; Celgene: Honoraria, Other: Advisory Board & Lecturer. Patriarca:Janssen: Other: Advisory role; Celgene: Other: Advisory Role; Travel, accommodations, expenses; Jazz: Other: Travel, accommodations, expenses; MSD Italy: Other: Advisory Role; Medac: Other: Travel, accommodations, expenses. Minnema:Celgene: Consultancy, Research Funding; Janssen: Consultancy; Amgen: Consultancy; Takeda: Consultancy; Servier: Consultancy. Costa:celgene: Employment. Iskander:amgen: Employment. Boccadoro:Mundipharma: Research Funding; Amgen: Honoraria, Research Funding; Janssen: Honoraria, Research Funding; Novartis: Honoraria, Research Funding; AbbVie: Honoraria; Bristol-Myers Squibb: Honoraria, Research Funding; Celgene: Honoraria, Research Funding; Sanofi: Honoraria, Research Funding.

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An Open-Label Phase 2 Study Of Ofatumumab In Combination With a Novel AKT Inhibitor (Afuresertib) In Previously Treated Patients With Chronic Lymphocytic Leukemia (CLL)

Blood ◽

10.1182/blood.v122.21.4175.4175 ◽

2013 ◽

Vol 122 (21) ◽

pp. 4175-4175

Author(s):

Christine I. Chen ◽

Susi Snitzler ◽

Trina Wang ◽

Harminder Paul ◽

Lisa W Le ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Single Agent ◽

Treatment Phase ◽

Phase 2 ◽

Akt Inhibitor ◽

Advisory Committees ◽

Phase 2 Study ◽

Previously Treated ◽

Grade 3

Abstract Introduction Ofatumumab is a novel anti-CD20 monoclonal antibody which led to impressive single-agent responses of 47-58% in a phase 2 study of CLL patients (pts) with refractory disease (Wierda et al 2010). Unfortunately, response durations were short (median 5.6-7.1 mos). In order to improve upon these results, we combined ofatumumab with a novel pan-AKT kinase inhibitor, afuresertib (GSK2110183). The AKT pathway plays a centralized role in tumor differentiation, migration, proliferation and survival and is frequently aberrantly activated in CLL (Longo et al 2007). Single agent afuresertib is very well-tolerated with minimal myelotoxicity in relapsed/refractory hematologic malignancies (Spencer et al ASH 2011). We present an interim analysis of the initial 19 of 31 planned pts in an ongoing trial of ofatumumab and afuresertib in relapsed/refractory CLL. Methods Previously treated CLL pts who have received at least one prior fludarabine-containing regimen with disease progression are eligible. During the initial 6 month Treatment Phase, ofatumumab 2000mg IV is administered weekly for 8 doses, then once every 4 week cycle for 4 doses (dose/schedule identical to the pivotal phase 2 trial) with afuresertib 125mg orally daily. An initial 10 day Lead-in Phase with afuresertib alone allows for evaluation of pharmacodynamic (PD) changes in phosphoproteins and pharmacokinetic (PK) studies. Pts are assessed for safety and response on day 1 of each cycle. Pts achieving SD, PR or CR by the end of the Treatment Phase proceed to the Maintenance Phase with single-agent afuresertib for a maximum of 12 mos (12 cycles). Results Demographics: To date, 19 pts have been enrolled. Median age is 65 yrs (range 43-76), baseline median Hb 108g/L (range 80-145), absolute lymphocytes 29.7 x109/L (range 1.0-464.9), β2M 4.42mg/L (range 1.42-3.21), bulky nodes ≥5cm in 5 pts (32%), organomegaly in 8 pts (42%), del17p/del11q on FISH in 9 pts (47%), and ZAP70+ in 13 pts (68%). Eight pts (42%) were fludarabine-refractory; only 2 pts had received prior alemtuzumab. The median number of prior therapies was 2 (range 1-6). Toxicity: Hematologic: 4 pts (21%) developed Gr 3-4 neutropenia during at least 1 cycle; 1 pt (5%) had a febrile neutropenia event. Only 2 pts (10.5%) have developed Gr 3-4 thrombocytopenia, without bleeding. Nonhematologic toxicity: Most common related grade 3-4 toxicities were GI: dyspepsia (53%), diarrhea (37%), nausea (21%), temporally related to oral afuresertib and easily managed symptomatically. Infusion reactions to ofatumumab were frequent (12 pts; 63%) with grade 3 reactions in 3 pts. Five pts (26%) developed non-infectious pneumonitis, with 3 pts requiring hospitalization. Two pts with preexisting atrial arrhythmias sustained exacerbation with weekly ofatumumab infusions. Most infections were mild, with only 1 grade 3 cellulitis. Efficacy: Of the 19 response-evaluable pts receiving a median of 6 cycles (range 1-9), 8 pts (42%) have achieved a PR, 11 SD (58%), and no CR. Response onset was rapid at a median 0.9 mos (range 0.8-2.8). At a median follow-up of 6.8 mos (range 0.3-12.9 mos), 5 pts (26%) have progressed and one patient has died after cycle 1 on therapy due to progressive CLL. PD Studies: CD19+ cells are assayed for phosphorylated AKT and its downstream targets RAS40 and GSK3 in addition to phospho-proteins of alternative pathways including ERK and pS6 by multiplexed phospho-flow cytometry. Peripheral blood samples are collected at screening and on cycle 1 day 10, after dosing with afuresertib. Of the 7 patients evaluated thus far, 5 demonstrated constitutive AKT phosphorylation at baseline. Partial inhibition of AKT signaling evidenced by increased phosphorylation of AKT and inhibition of GSK3 and/or RAS40 phosphorylation in response to BCR stimulation was observed post-treatment, indicating target engagement by afuresertib. PK Studies: Afuresertib exposure (Cmax and AUC) was similar when afuresertib was administered alone or in combination with ofatumumab. Conclusion Preliminary results from this phase 2 study suggests that a combination of ofatumumab plus a novel oral AKT inhibitor, afuresertib, has activity in previously treated CLL and is generally well-tolerated with minimal myelotoxicity. Response data are encouraging but whether durable responses can be achieved requires more mature follow-up. Disclosures: Chen: Johnson & Johnson: Consultancy, Research Funding; Lundbeck: Consultancy; Celgene: Consultancy, Research Funding; GlaxoSmithKline: Research Funding; Roche: Honoraria. Off Label Use: Off-label use of ofatumumab and afuresertib for the treatment of relapsed/refractory CLL. Smith:GSK: Employment, Equity Ownership. Johnston:Roche: Membership on an entity’s Board of Directors or advisory committees, Research Funding; Lundbeck: Membership on an entity’s Board of Directors or advisory committees, Research Funding; GSK: Membership on an entity’s Board of Directors or advisory committees, Research Funding.

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Observational Prospective Registry for the Assessment of the Clinical Impact of Starting Anti-Myeloma Treatment at Biological Relapse

Blood ◽

10.1182/blood.v124.21.4765.4765 ◽

2014 ◽

Vol 124 (21) ◽

pp. 4765-4765

Author(s):

Adrian Alegre ◽

Merche Gironella ◽

Juan Miguel Bergua ◽

Esther Gonzalez ◽

Fernando Escalante ◽

...

Keyword(s):

Bone Marrow ◽

Board Of Directors ◽

Median Time ◽

Research Funding ◽

Marrow Transplant ◽

Clinical Relapse ◽

First Line ◽

Advisory Committees ◽

Free Survival

Abstract Introduction: Despite the great medical advances associated with the introduction of thalidomide, bortezomib (BORT), and lenalidomide (LEN) for the treatment of multiple myeloma (MM), it remains an incurable disease. Most patients (pts) show disease progression, consistent with the clinical evolution of MM, and only a low percentage achieve long-term responses and extended progression-free survival (PFS). The heterogeneous nature of MM in both the clinical and biological setting is reflected in the heterogeneity of MM relapses. The International Myeloma Workshop Consensus Panel (Rajkumar, Blood 2011) states that treatment (Tx) shall begin either at clinical relapse with symptoms (clinR), or in the event of asymptomatic relapse with significant paraprotein relapse, biological relapse (BR). The purpose of this Spanish registry is to describe MM relapse patterns comparing the impact of Tx decisions in pts who meet the criteria for biological relapse (BR) according to IMWG criteria with those in whom Tx was delayed until clinical relapse (clinR). Here, the preliminary results of this study are presented. Methods: MM pts in (or previous to) first or second BR who have achieved ≥ PR since their last Tx are eligible for inclusion in this observational prospective registry at the time BR is detected. Evaluations performed at least bi-monthly are mandatory. A total of 41 Spanish sites participated in the registry following approval from their independent ethics committees, with 410 pts expected to be included, without physician’s decision of prescribing Tx affecting the inclusion. The main objective of the registry is to assess the time to progression (TTP) from the start of anti-MM Tx at the onset of asymptomatic BR vs. the start of Tx at the time of clinR. Secondary objectives are to describe demographics of BR; to assess the median time elapsing from BR to clinR; to assess overall response rate (ORR), event-free survival (EFS), PFS, overall survival (OS) at BR and at clinR (if appropriate); to asses safety and quality of life (QoL) using 2 validated questionnaires (European Organisation for Research and Treatment of Cancer [EORTC] QLQ-C30 and QLQ-MY24); to document the tolerability profile of the Tx; and to describe the use of associated resources. Here, we summarize baseline characteristics and preliminary results from 83 pts (out of 126 registered pts) who had basal data in the registry at the time of this report. Results: Overall, 79% of pts presented with a BR and 21% were in a bi-monthly watchful waiting follow up. The mean age of pts was 67 years, 53% were female, 57% were in first relapse, 43% and 27% had an ECOG performance status (PS) of 0 and 1, respectively, while the ECOG PS was unknown in 30% of pts at the time of this report. In total, 30% of pts had ISS stage I, 26% had ISS stage II, and 22% had ISS stage III, while ISS stage data were not available or unknown for 12% and 10% of pts, respectively. MM types were IgG Κ (37% of pts), IgG λ (23%), IgA Κ (13%), IgA λ (9%), and type was unknown in 17% of pts. 28% of IgG/IgA MM types were Bence-Jones. Cytogenetic risk assessments were available in 66% of pts. Among those pts with a BR, 51% received active Tx without waiting for a ClinR. First-line Tx was BORT-based in 70% of pts. Overall, 55% of pts had undergone autologous stem cell transplantation, 15% had received consolidation Tx and 34% had received maintenance Tx. After first-line Tx, 17% of pts achieved a stringent complete response (sCR), 31% achieved a CR, 24% achieved a very good partial response (VGPR), and 10% achieved a PR. The median time to BR was 24.53 months. Most (63%) pts who registered after second relapse received LEN-based Tx. Conclusions: To our knowledge, this is the first prospective study in MM to evaluate BR as well as the effects of Tx based on the decision to start Tx at BR vs. clinR. In this preliminary cohort, the physicians’ decision to start active Tx at BR, before the onset of clinR in 50% of cases, was noteworthy. Further follow-up is needed to identify the differences between these two strategies. Updated clinical results will be presented at the meeting. MM-BR Study, Spanish Myeloma Group-GEM/PETHEMA Bibliography Alegre A, et al. Haematologica. 2002;87:609-14. Brioli A, et al. Blood. 2014;123:3414-9. Fernández de Larrea C, et al. Bone Marrow Transplant. 2014;49:223-7. Lenhoff S, et al. Haematologica. 2006;91:1228-33. Rajkumar SV, et al. Blood. 2011;117:4691-5. Zamarin D, et al. Bone Marrow Transplant. 2013;48:419-24. Disclosures Alegre: Celgene: Membership on an entity's Board of Directors or advisory committees, Research Funding; Jansen: Membership on an entity's Board of Directors or advisory committees, Research Funding. Lahuerta:Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees. Ruiz:Celgene: Celgene Stock options as part of the employee's compensation plan Other, Employment. Vilanova:Celgene: Contracted by Celgene Other.

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A Phase 2 Study to Evaluate the Efficacy and Safety of Simtuzumab in Adult Subjects with Primary, Post Polycythemia Vera (PV) or Post Essential Thrombocythemia (ET) Myelofibrosis

Blood ◽

10.1182/blood.v126.23.2810.2810 ◽

2015 ◽

Vol 126 (23) ◽

pp. 2810-2810

Author(s):

Srdan Verstovsek ◽

Michael R. Savona ◽

Ruben A. Mesa ◽

Stephen Oh ◽

Hua Dong ◽

...

Keyword(s):

Bone Marrow ◽

Board Of Directors ◽

Research Funding ◽

Phase 2 ◽

Fibrosis Score ◽

Bone Marrow Fibrosis ◽

Advisory Committees ◽

Equity Ownership ◽

Stage 1 ◽

Marrow Fibrosis

Abstract Background: Simtuzumab (SIM) is a humanized monoclonal antibody that inhibits lysyl oxidase-like molecule 2 (LOXL2), an extracellular matrix enzyme that catalyzes the covalent cross-linking of collagen and is widely expressed across many fibrotic diseases. In pre-clinical models, inhibition of LOXL2 blocks fibroblast activation, which plays an important role in the development of organ fibrosis. In Phase 1 studies, SIM was well-tolerated in patients (pts) with advanced solid tumors, liver fibrosis, and idiopathic pulmonary fibrosis (IPF). A Phase 2, open-label study to determine the efficacy of SIM alone (Stage 1) and combined with ruxolitinib (rux) (Stage 2) in pts with primary myelofibrosis (PMF) and post-ET/PV MF was initiated. Methods: Eligible pts had intermediate-1, intermediate-2, or high risk disease and Eastern Cooperative Oncology Group performance status of <2. The primary endpoint was rate of clinical response as defined by a reduction in bone marrow fibrosis score following 24 weeks of treatment with SIM. Patients were randomized in a 1:1 ratio to receive 200 mg or 700 mg SIM by intravenous infusion every 2 weeks as monotherapy (Stage 1, n=24) or combined with rux (Stage 2, n=30). Patients received SIM for up to 24 weeks. Bone marrow biopsies and aspirates were performed approximately every 3 months. Bone marrow fibrosis scoring was performed and quantified at local investigator sites using the European Consensus on Grading Bone Marrow Fibrosis. Myelofibrosis symptoms were evaluated using the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) and changes in hematologic parameters and splenomegaly were assessed. Results: Between 7/14/11 and 9/22/14, 54 pts were randomized and treated (200 mg SIM [n=12], 700 mg SIM [n=12], 200 mg SIM/rux [n=15], and 700 mg SIM/rux [n=15]). In Stage 1, 0 subjects (0%) in the SIM 200 mg group and 2 subjects (16.7%; 90% CI 3.0%, 43.8%) in the SIM 700 mg group showed a reduction in bone marrow fibrosis score from Baseline to Week 24. In Stage 2, 1 subject (6.7%; 90% CI 0.3%, 27.9%) in the SIM 200 mg/rux group and 2 subjects (13.3%, 90% CI 2.4%, 36.3%) in the SIM 700 mg/rux group showed a reduction in bone marrow fibrosis score from Baseline to Week 24. In an exploratory analysis, similar numbers of subjects showed increases in bone marrow fibrosis scores. SIM treatment was not associated with meaningful improvements in hematologic parameters or reductions in MPN-SAF score or spleen size. The most frequent adverse events were those commonly associated with MF, including constitutional symptoms and reductions in hematological parameters. Conclusions: SIM treatment alone or in combination with rux is safe but does not reliably reduce bone marrow fibrosis in pts with MF. The reason for reduction of marrow fibrosis in some patients and increase in others is unclear and may be sampling variability. Clinical studies of SIM in IPF and liver fibrosis are ongoing. Disclosures Savona: Karyopharm: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Incyte: Membership on an entity's Board of Directors or advisory committees, Research Funding; TG Therapeutics: Research Funding; Astex Pharmaceuticals, Inc: Research Funding; Celgene: Membership on an entity's Board of Directors or advisory committees; Gilead: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees. Mesa:Incyte Corporation: Research Funding; CTI Biopharma: Research Funding; Novartis Pharmaceuticals Corporation: Consultancy; Pfizer: Research Funding; Promedior: Research Funding; Genentech: Research Funding; NS Pharma: Research Funding; Gilead: Research Funding. Oh:CTI Biopharma: Membership on an entity's Board of Directors or advisory committees; Incyte: Membership on an entity's Board of Directors or advisory committees. Dong:Gilead Sciences: Consultancy, Equity Ownership. Thai:Gilead Sciences: Employment, Equity Ownership. Gotlib:Allakos, Inc.: Consultancy.

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