Prevalence and Clinical Impact of Additional Cytogenetic Abnormalities in Patients (Pts) with Myelodysplastic Syndromes (MDS) and Deletion 5q from the MDS-003 and MDS-004 Studies

Abstract Introduction: Around 50% of pts with de novo MDS present with chromosomal abnormalities at diagnosis. One of the most common cytogenetic abnormalities in MDS, deletion 5q [del(5q)], occurs in ~15% of pts (Haase et al. Blood 2007;110:4385-95). The presence of cytogenetic abnormalities in addition to del(5q) may be associated with shorter overall survival (OS) and increased risk of progression to acute myeloid leukemia (AML) versus del(5q) alone (Mallo et al. Leukemia 2011;25:110-20). In 2 large multicenter studies (MDS-003 and MDS-004), lenalidomide (LEN) was evaluated in RBC transfusion-dependent pts with IPSS Low/Intermediate (Int)-1-risk MDS and del(5q) (List et al. N Engl J Med 2006;355:1456-65; Fenaux et al. Blood 2011;118:3765-76). This analysis describes the prevalence and clinical impact of the most common cytogenetic abnormalities in pts with del(5q) from MDS-003 and MDS-004. Methods: Of 353 pts enrolled in MDS-003 and MDS-004, 281 pts had available cytogenetic data with ≥ 16 metaphases evaluable, and were included in the analysis. Pts received 10 mg LEN on days 1–21 of each 28-day cycle; LEN 5 mg or 10 mg continuously; or placebo. In MDS-004, placebo pts could crossover to LEN 5 mg by Week (Wk) 16. Centrally reviewed cytogenetic studies were performed at baseline, and wks 24 and 48 (MDS-003); or baseline, Wk 24, and every 24 wks thereafter (MDS-004). RBC-transfusion independence (RBC-TI) ≥ 26 wks, cytogenetic response (CyR), AML progression, and OS were assessed by most common cytogenetic abnormalities in LEN-treated pts with del(5q) plus 1 additional abnormality. Some pts did not fulfill the IPSS lower-risk classification after central pathologic/cytogenetic evaluation. For this analysis outcomes in the del(5q) plus ≥ 2 additional abnormalities group were not evaluated. Results: Of the 281 pts, 70.8% had isolated del(5q), 19.9% del(5q) plus 1 additional abnormality, and 9.3% had del(5q) plus ≥ 2 additional abnormalities. Baseline characteristics including age, time from diagnosis, RBC transfusion burden, hemoglobin level, and platelet and absolute neutrophil counts were comparable across the cytogenetic groups. In pts with del(5q) plus 1 additional abnormality at baseline, the most common numerical abnormalities were +8 (17.9%; n = 10), +21 (14.3%; n = 8), and −7 (3.6%; n = 2); the most common balanced structural rearrangements were translocation 2;11 [t(2;11)] (5.4%; n = 3) and isochromosome 21q [i(21q)] (3.6%; n = 2); and the most common unbalanced structural rearrangements were del(11q) (7.1%; n = 4), del(20q) (5.4%; n = 3), del(9q) (3.6%; n = 2), and del(12p) (3.6%; n = 2) (Figure). In the del(5q) plus 1 additional abnormality group, baseline characteristics were comparable across pts with +8, +21, or other abnormalities (i.e. excluding those with +21 and +8), with the exception of age (P = 0.023). Rates of RBC-TI ≥ 26 wks and CyR did not significantly differ among LEN-treated pts with +8 (n = 9), +21 (n = 8), or other abnormalities (n = 37). Rates of RBC-TI ≥ 26 wks were 66.7%, 50.0%, and 54.1% (P = 0.839), respectively. In pts evaluable for CyR (n = 40), CyR rates were 42.9%, 42.9%, and 65.4% (P = 0.407), respectively. Median time to AML progression was shorter in LEN-treated pts with +21 (2.6 years [yrs]; 95% CI 1.2–4.8) versus +8 (4.8 yrs; 95% CI 1.6–not estimable) or other abnormalities (7.5 yrs; 95% CI 4.1–7.5) (P = 0.0143). The 5-year AML progression rates were 68.8% (95% CI 26.6–98.7), 85.7% (95% CI 53.5–99.3), and 36.3% (95% CI 19.2–61.3) in pts with +8, +21, or other abnormalities, respectively. Median OS was 4.1 yrs (95% CI 0.9–5.3), 3.0 yrs (95% CI 1.1–4.9), and 3.4 yrs (95% CI 2.6–6.5) (P = 0.423), respectively. Of the 2 pts with −7: 1 pt with Int-1-risk MDS had a 92% to 8% reduction of −7-positive metaphases at Day 84 on treatment, but no RBC-TI ≥ 26 wks, and died at Day 709 without AML; the other Int-2-risk pt progressed to AML on Day 147 with clearance of −7 from 8%, and development of new +8 and del(16q) abnormalities. Conclusions:In MDS pts with del(5q) plus 1 additional abnormality from MDS-003 and MDS-004, the most common cytogenetic abnormalities were +8, +21, del(11q), del(20q), and t(2;11), which accounted for 50% of the additional abnormalities at baseline. In the del(5q) plus 1 additional abnormality population, median time to AML progression was shorter in pts with +21 versus either +8 or other abnormalities. Due to small pt numbers, larger prospective analyses are needed to confirm these observations. Figure 1 Figure 1. Disclosures Giagounidis: Celgene Corporation: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees. List:Celgene Corporation: Consultancy. Hellstrom-Lindberg:Celgene: Research Funding. Mufti:Celgene Corporation: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Schlegelberger:Celgene Corporation: Consultancy. Morrill:Celgene Corporation: Employment, Equity Ownership. Wu:Celgene Corporation: Employment, Equity Ownership. Skikne:Celgene: Employment, Equity Ownership. Fenaux:Novartis: Research Funding; Janssen: Research Funding; Celgene Corporation: Research Funding.

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Impact Of The Proportion Of Metaphases With Isolated Del(5q) On Clinical Outcomes In Lenalidomide (LEN)-Treated Patients With IPSS Low-/Int-1-Risk Myelodysplastic Syndromes (MDS) In MDS-003 and MDS-004

Blood ◽

10.1182/blood.v122.21.1538.1538 ◽

2013 ◽

Vol 122 (21) ◽

pp. 1538-1538

Author(s):

Aristoteles Giagounidis ◽

Alan List ◽

Eva Hellström-Lindberg ◽

Mikkael A. Sekeres ◽

Ghulam J. Mufti ◽

...

Keyword(s):

Board Of Directors ◽

Clinical Outcomes ◽

Research Funding ◽

Rank Test ◽

Employment Equity ◽

Advisory Committees ◽

Log Rank Test ◽

Equity Ownership ◽

Baseline Characteristics ◽

Rbc Transfusion

Abstract Introduction The proportion of aberrant metaphases is prognostic for overall survival (OS) in MDS patients with trisomy 8 (Mallo M, et al. Leuk Res. 2011;35:834-6). The impact of the proportion of metaphases with del(5q) on clinical outcomes, including OS, disease progression and response to therapy with LEN in MDS remains undefined. In two large multicenter studies of LEN (MDS-003 and MDS-004) in RBC transfusion-dependent patients with International Prognostic Scoring System (IPSS) Low- or Intermediate (Int)-1-risk del(5q) MDS, RBC transfusion independence (TI) ≥ 8 weeks was achieved in 51–67% of patients (List A, et al. N Engl J Med. 2006;355:1456-65; Fenaux P, et al. Blood. 2011;118:3765-76). This retrospective analysis evaluated response to treatment, progression to acute myeloid leukemia (AML) and OS by proportion of del(5q) metaphases in patients with isolated del(5q) from the MDS-003 and 004 studies. Methods In order to allow sufficient patient numbers for analysis, ≥ 16 metaphases were evaluated for del(5q) by standard karyotyping (MDS-003 and MDS-004) and 200 interphase nuclei were evaluated by fluorescence in situ hybridization (FISH; MDS-004 only) using a probe for the commonly deleted region 5q31 (LSI EGR1/D5S721, Abbott, Wiesbaden, Germany). Patients received LEN on days 1–21 of each 28-day cycle (10 mg) or continuously (5 mg or 10 mg), or placebo. In MDS-004, patients randomized to placebo could cross over to LEN 5 mg by week 16. RBC-TI ≥ 26 weeks, time to AML progression and OS were analyzed by the proportion of del(5q) metaphases or interphases (≤ 60% vs > 60%) using standard karyotyping and FISH, respectively. Results Of the 353 patients from MDS-003 and MDS-004, 194 had isolated del(5q) by standard karyotyping; median proportion of del(5q) metaphases was 96% (range 4–100). Baseline characteristics including age, time from diagnosis, RBC transfusion burden, hemoglobin level, platelet and absolute neutrophil counts were comparable among patients with ≤ 60% (n = 21) and > 60% (n = 173) del(5q) metaphases. Rates of RBC-TI ≥ 26 weeks were similar across patients in the ≤ 60% and > 60% groups (P = 0.6515). Time to AML progression was comparable for patients in the ≤ 60% group versus the > 60% group (log-rank test P = 0.9802); 2-year rates were 22.2% (95% confidence interval [CI]: 7.7–54.5%) and 14.6% (95% CI: 9.9–21.2%), respectively. Time to AML progression was similar when analyzed with death without AML as competing risk (Gray’s test P = 0.5514). OS was longer in the > 60% versus the ≤ 60% group (log-rank test P = 0.0436); median OS was 3.7 years (95% CI: 3.0–4.2) and 2.4 years (95% CI: 1.5–4.9), respectively. In MDS-004, the proportion of del(5q) interphases was analyzed using FISH in 106 patients, including 46 with ≤ 60% and 60 with > 60%. When analyzed by FISH, rates of RBC-TI ≥ 26 weeks were similar across patients in the ≤ 60% and > 60% groups (P = 1.000). Time to AML progression and OS were similar across these groups (log-rank test P = 0.7311 and P = 0.8639, respectively) when analyzed by FISH. In the ≤ 60% and > 60% groups respectively, 2-year AML progression rates were 14.8% (95% CI: 6.9–30.1%) and 18.6% (95% CI: 10.4–32.0%), and median OS was 3.1 years (95% CI: 2.3–4.8) and 2.9 years (95% CI: 2.3–4.4). Time to AML progression was similar when analyzed with death without AML as competing risk (Gray’s test P = 0.8631). Conclusions In IPSS Low- or Int-1-risk MDS patients with isolated del(5q) treated with LEN in MDS-003 and MDS-004 studies, baseline characteristics, RBC-TI ≥ 26 weeks and AML progression were comparable in patients with > 60% versus ≤ 60% del(5q) metaphases. Although similar across groups when analyzed by FISH in a subset of patients, surprisingly, OS was longer in patients with > 60% del(5q) metaphases than in those with ≤ 60% del(5q) metaphases by standard karyotyping. However, the number of patients with ≤ 60% del(5q) metaphases was limited and no adjustment was made for multiple testing. These findings suggest that the number of cells with the isolated del(5q) abnormality measured by FISH does not impact clinical outcome in this RBC transfusion-dependent study population, but this finding could not be confirmed for OS by standard karyotyping. Disclosures: Giagounidis: Celgene: Consultancy, Honoraria, Membership on an entity’s Board of Directors or advisory committees. List:Celgene: Serve on Celgene Data Safety & Monitoring Committee Other. Hellström-Lindberg:Celgene: Membership on an entity’s Board of Directors or advisory committees, Research Funding. Sekeres:Celgene: Membership on an entity’s Board of Directors or advisory committees; Amgen: Membership on an entity’s Board of Directors or advisory committees. Mufti:Celgene: Honoraria, Membership on an entity’s Board of Directors or advisory committees, Research Funding. Schlegelberger:Celgene: Consultancy. Morrill:Celgene: Employment, Equity Ownership. Wu:Celgene: Employment, Equity Ownership. Skikne:Celgene: Employment, Equity Ownership. Fenaux:Celgene: Honoraria.

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Imerge: A Study to Evaluate Imetelstat (GRN163L) in Transfusion-Dependent Subjects with IPSS Low or Intermediate-1 Risk Myelodysplastic Syndromes (MDS) That Is Relapsed/Refractory to Erythropoiesis-Stimulating Agent (ESA) Treatment

Blood ◽

10.1182/blood-2019-127435 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 4248-4248 ◽

Cited By ~ 1

Author(s):

Uwe Platzbecker ◽

David P. Steensma ◽

Koen Van Eygen ◽

Azra Raza ◽

Valeria Santini ◽

...

Keyword(s):

Board Of Directors ◽

Myelodysplastic Syndromes ◽

Research Funding ◽

Phase 2 ◽

Employment Equity ◽

Phase 3 ◽

Advisory Committees ◽

Equity Ownership ◽

The Impact ◽

Rbc Transfusion

Background: Current treatment options for red blood cell (RBC) transfusion-dependent (TD) patients with lower risk (LR) myelodysplastic syndromes (MDS) relapsed after or refractory to erythropoiesis-stimulating agents (ESAs) have limited efficacy and durability; new approaches are needed. Imetelstat is a 13-mer lipid-conjugated oligonucleotide that targets the RNA template of human telomerase and is a competitive inhibitor of telomerase enzymatic activity (Asai et al, Cancer Res 2003; Herbert et al, Oncogene 2005). Preclinical, in vivo xenograft models (Dikmen et al, Cancer Res 2005; Hochreiter et al, Clin Cancer Res 2006) and preliminary clinical data from a pilot study conducted at Mayo Clinic (Tefferi et al, Blood Cancer Journal 2016) supported initiation of a study in TD LR MDS patients. A Phase 2 study of imetelstat, IMerge, demonstrated an 8-week RBC transfusion independence (RBC-TI) rate of 42%, 24-week RBC-TI rate of 29%, and 68% erythroid hematologic improvement (HI-E) rate in 38 heavily TD patients (median prior RBC transfusion burden 8 units / 8 weeks over the 16 weeks pre-study period) with LR MDS. Responses were durable with median duration of 8-week RBC-TI of 85.9 weeks by Kaplan Meier estimates (range 8.0-140.9) (Steensma ASH 2018, Fenaux EHA 2019). These Phase 2 results provided further evidence of potential clinical benefit of imetelstat treatment in TD LR MDS, and supported initiation of a Phase 3 trial. Methods: IMerge is two-part, Phase 2/3 study (ClinicalTrials.gov: NCT02598661). The Phase 2 portion of the study described above is closed for enrollment. The Phase 3 portion of the study is open for enrollment of adult patients with International Prognostic Scoring System (IPSS) low or intermediate-1 risk, non-del(5q) MDS, who are TD, are relapsed after or refractory to ESAs, and have not received treatment with lenalidomide or hypomethylating agents. The study is a randomized (2:1) double-blind, placebo-controlled trial to compare efficacy of imetelstat vs. placebo that will enroll approximately 170 patients and will be conducted at approximately 90 centers in North America, Europe, Asia and Middle East. Imetelstat will be administered as 2-hour IV infusion every 4 weeks at 7.5 mg/kg. The primary endpoint of the study is to assess the rate of RBC-TI lasting ≥8 weeks. Secondary endpoints include safety, rate of RBC-TI ≥24 weeks, time to RBC-TI start, RBC-TI duration, rate of HI-E, the amount and relative change in RBC transfusions, rate of CR or PR, overall survival, progression of MDS, pharmacokinetics and effect of treatment on quality of life. Biomarkers relevant to the mechanism of action of imetelstat will be assessed to demonstrate target inhibition and their association with clinical responses. Cytogenetics and mutation analyses will be performed to evaluate the impact of imetelstat on reduction/depletion of malignant clones leading to disease modification. Disclosures Platzbecker: Novartis: Consultancy, Honoraria, Research Funding; Celgene: Consultancy, Honoraria, Research Funding; Abbvie: Consultancy, Honoraria. Steensma:Astex: Consultancy; Arrowhead: Equity Ownership; Summer Road: Consultancy; Onconova: Consultancy; Aprea: Research Funding; Pfizer: Consultancy; Stemline: Consultancy; H3 Biosciences: Other: Research funding to institution, not investigator.. Santini:Celgene Corporation: Honoraria, Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees; Johnson & Johnson: Honoraria; Acceleron: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees; Menarini: Membership on an entity's Board of Directors or advisory committees. Germing:Novartis: Honoraria, Research Funding; Celgene: Honoraria, Research Funding; Jazz Pharmaceuticals: Honoraria; Amgen: Honoraria. Font:Celgene: Consultancy, 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; Pfizer: Membership on an entity's Board of Directors or advisory committees. Díez-Campelo:Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Celgene Corporation: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. Patnaik:Stem Line Pharmaceuticals.: Membership on an entity's Board of Directors or advisory committees. Sherman:Geron Corporation: Employment, Equity Ownership. Dougherty:Geron Corporation: Employment, Equity Ownership. Feller:Geron Corporation: Employment. Sun:Geron Corporation: Employment, Equity Ownership. Wan:Geron Corporation: Employment, Equity Ownership. Huang:Geron Corporation: Employment, Equity Ownership. Rizo:Geron Corporation: Employment, Equity Ownership. Fenaux:Celgene Corporation: Honoraria, Research Funding; Aprea: Research Funding; Astex: Honoraria, Research Funding; Jazz: Honoraria, Research Funding.

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Influence of Karyotype On Overall Survival in Patients with Higher-Risk Myelodysplastic Syndrome Treated with Azacitidine or a Conventional Care Regimen.

Blood ◽

10.1182/blood.v114.22.1755.1755 ◽

2009 ◽

Vol 114 (22) ◽

pp. 1755-1755 ◽

Cited By ~ 5

Author(s):

Ghulam J Mufti ◽

Steven D. Gore ◽

Valeria Santini ◽

Pierre Fenaux ◽

Lewis R. Silverman ◽

...

Keyword(s):

Overall Survival ◽

Board Of Directors ◽

Research Funding ◽

Conventional Care ◽

Complex Karyotype ◽

Trisomy 8 ◽

Employment Equity ◽

Advisory Committees ◽

Cytogenetic Abnormalities ◽

Equity Ownership

Abstract Abstract 1755 Poster Board I-781 Background Karyotypic abnormalities are common in myelodysplastic syndromes (MDS), and specific chromosomal abnormalities are associated with poor prognosis. The phase III AZA-001 study (Lancet Oncol, 2009) showed azacitidine (AZA) prolonged overall survival (OS) regardless of IPSS cytogenetic risk category. This analysis assessed the effects of specific cytogenetic abnormalities on OS in patient (pt) subgroups treated with AZA or a conventional care regimen (CCR). Methods Pts with higher-risk MDS (FAB RAEB, RAEB-t, or CMML and IPSS Int-2 or High) were enrolled and randomized to receive AZA or CCR. CCR comprised 3 treatments: best supportive care only, low-dose ara-C, or induction chemotherapy. Erythropoietins were prohibited. OS was determined in subgroups of pts with del 5/5q-, del 7/7q-, or trisomy 8, each as part of a non-complex karyotype (<3 cytogenetic abnormalities) or as part of a complex karyotype (≥3 cytogenetic abnormalities). OS was also analyzed in pts with combinations of del 5/5q- and/or del 7/7q- as part of non-complex or complex karyotypes (Table). Pt karyotype was determined at baseline. OS was assessed using Kaplan-Meier methods. A stratified Cox proportional hazards regression model was used to estimate hazard ratios (HRs) and associated 95% confidence intervals (CI). Results A total of 358 pts were enrolled (AZA 179, CCR 179). Of them, 153 had normal karyotypes (AZA 77, CCR 76). Median OS in pts with normal karyotypes was not reached at 21.1 months with AZA vs 17.2 months (95%CI: 15.2 – 24.1 months) with CCR; HR = 0.63 (95%CI: 0.39 – 1.03). Of remaining pts, 136 had del 5/5q-, del 7/7q-, and/or trisomy 8 as part of a non-complex or complex karyotype. AZA was associated with longer OS vs CCR in all subgroups of pts with non-complex cytogenetics, with HRs ranging from 0.20 (95%CI: 0.06 – 0.65) to 0.51 (95%CI: 0.05 – 4.74) (Table). In both the AZA and CCR treatment groups, pts in all subgroups with non-complex karyotypes had substantially longer OS than pts with complex karyotypes. Pts with complex karyotypes in some subgroups had longer OS with AZA vs CCR: median OS in pts with del 5/5q-, del 5/5q- WITHOUT del 7/7q-, or trisomy 8 as part of a complex karyotype treated with AZA survived 5.1, 8.0, and 12.4 months longer, respectively, than their counterparts who received CCR. HRs with AZA vs CCR in pts with complex cytogenetics ranged from 0.42 (95%CI: 0.10 – 1.69) to 0.55 (95%CI: 0.29 – 1.05). Conclusions These findings support earlier data showing effectiveness of AZA in higher-risk MDS pts with complex or non-complex karyotypes. Major gains in OS were obtained with AZA vs CCR (12-18 months longer OS with AZA) for the following categories: del 7/7q- (non-complex), del 7/7q- WITHOUT del 5/5q- (non-complex), and trisomy 8 (non-complex and complex). Pts with trisomy 8 treated with AZA experienced a 3-fold increase in median OS compared with similar pts who received CCR. Longer OS (AZA 15.3 vs CCR 7.3 months) was also obtained for pts with del5/5q- WITHOUT del7/7q- as part of a complex karyotype. The worse cytogenetic categories, del 7/7q- and del 5/5q- AND del 7/7q-, both with complex karyotype, were associated with the poorest OS regardless of treatment. Pt subgroups in this post hoc analysis were small and heterogeneous; confirmation of these findings in larger pt samples is warranted. Disclosures Mufti: Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Gore:Celgene: Consultancy, Equity Ownership, Research Funding; Johnson & Johnson: Research Funding. Santini:Celgene: Honoraria. Fenaux:Celgene: Honoraria, Research Funding; Ortho Biotech: Honoraria, Research Funding; Roche: Honoraria, Research Funding; Amgen: Honoraria, Research Funding; Cephalon: Honoraria, Research Funding; Novartis: Honoraria, Research Funding; MSD: Honoraria, Research Funding; Epicept: Honoraria, Research Funding. Skikne:Celgene: Employment, Equity Ownership. Hellstrom-Lindberg:Celgene: Research Funding. Seymour:Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Beach:Celgene: Employment, Equity Ownership. Backstrom:Celgene: Employment, Equity Ownership. Fernando:Celgene: Employment, Equity Ownership.

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Patterns of Care of Aged Chronic Lymphocytic Leukemia Patients in the United States: Systematic Analysis of 457 Patients in the Connect CLL Registry

Blood ◽

10.1182/blood.v124.21.4672.4672 ◽

2014 ◽

Vol 124 (21) ◽

pp. 4672-4672

Author(s):

Chadi Nabhan ◽

Natalie Galanina ◽

Neil E. Kay ◽

Anthony R. Mato ◽

David L. Grinblatt ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

The United States ◽

Initial Therapy ◽

Patterns Of Care ◽

First Line ◽

Employment Equity ◽

Advisory Committees ◽

Equity Ownership ◽

Baseline Characteristics

Abstract Introduction: The median age at diagnosis for CLL pts in the US is 72 years. As clinical trials in CLL have largely enrolled younger pt populations, data on disease and pts' characteristics, patterns of care, prognosis, and molecular features in aged CLL pts are limited. With this in mind, we conducted a prospective study to update critical demographic data and patterns of care for aged CLL pt. Patients and Methods: Connect®-CLL is a US-based prospective, longitudinal, multi-center, observational registry that is aimed at understanding patterns of CLL management without a study-specific intervention. We enrolled pts treated at an academic (n=155) or community (n=1340) setting between 2010 and 2014. Eligible pts were adults with a clinical diagnosis of CLL who required therapy 2 or less months after enrollment. Data on demographics, baseline characteristics, and treatment selection are presented here using descriptive statistics. Continuous variables are reported using appropriate measures of dispersion and central tendency (means, medians, ranges and standard deviations) while categorical variables are summarized as number and percentage of the analysis population. Results: Of 1495 enrolled pts, 457 (30.5%) were ≥75 years (57.3% males, 94.2% white). Rai stage III/IV was noted in 33% and B symptoms (predominantly fatigue (58.4%)) were observed in 68.1%. These and other clinical baseline characteristics appeared similar to pts younger than 75 years except that older pts had more prior malignancies (33.5% vs. 19.8%) and co-morbidities (69.3% vs. 53.6%). Cardiac, neurologic, and renal disorders were the most common morbidities in pts ≥75 years (11.5%, 8.8%, and 4.6% respectively). Imaging studies were performed in 157 (60.2%) older pts and in 416 (65.7%) pts less than 75 years prior to initial therapy. Percentage of pts with bulky nodes (> 5 cm) by imaging was similar in the two groups, 19.3% overall. Prognostic biomarker data were available on 247 pts (178 (72%) <75 years; 69 (28%) ≥75 years). While a higher proportion of older pts had CD38+ CLL (55.1% vs. 40.5%, P=0.038), the proportions of patients with ZAP-70+ CLL were similar between the two groups. In total, 137 (9%) older and 378 (25%) younger pts had 17p and 11q analysis by FISH at enrollment prior to first-line therapy. Of these, 27.0% of pts ≥75 years and 20.6% of pts <75 years had a deletion of either 17p or 11q (P=0.125). Out of all pts enrolled in the registry, 894 (60%) received first-line treatment (261 (29%) pts ≥75 years and 633 (71%) <75 years) as their indication for study entry. Amongst these treated pts, interim analysis shows (data cutoff date: 25 June 2014) progressive marrow failure was more commonly used as the indication for therapy in older pts compared to younger pts (52.1% vs. 38.5%; P<0.001), while splenomegaly was a more common cause for therapy in younger pts (16% vs. 9%; P<0.01). Rai stage III/IV at time of first therapy was 46% and 49% for younger and older pts, respectively. Progressive lymphocytosis was used as the indication for therapy in one third of pts regardless of age. Seventy-four percent of older CLL pts received first-line therapies containing rituximab (R) vs. 85% in pts <75 years (P<0.0001). R-bendamustine was the most common first-line regimen for CLL pts ≥75 (23.4%) while FCR was more commonly given to pts <75 years (32.5%). R-monotherapy was used in 18.8% of older pts versus 9.5% in pts <75 years (P<0.0001). Of note, approximately 25% of CLL pts ≥75 years did not receive R-based regimens for initial therapy. Conclusions: Connect®-CLL is the largest prospective, multicenter CLL registry in the United States. CLL Pts ≥75 years more frequently overexpress CD38 and may more commonly demonstrate high risk cytogenetics by FISH, although the difference did not reach statistical significance. Pts ≥75 years also more commonly had co-morbid diseases, and surprisingly 25% did not receive first-line R-based therapy. CLL pts are rarely included in front-line clinical trials (<3%). Given that novel therapies are increasingly available for CLL patients a continued analysis is warranted to determine their use in elderly vs younger patients as well. A longer follow up is needed to evaluate the impact of these findings on outcomes. Disclosures Nabhan: Celgene: Honoraria, Research Funding. Off Label Use: Lenalidomide in CLL. Kay:Celgene: Research Funding. Mato:Genentech, Celgene, Millenium: Speakers Bureau. Grinblatt:Celgene: Honoraria, Speakers Bureau. Kipps:Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Lamanna:Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. Weiss:Celgene: Consultancy. Flinn:Celgene: Research Funding. Swern:Celgene: Employment, Equity Ownership. Street:Celgene: Employment, Equity Ownership. Kristen:Celgene: Employment, Equity Ownership. Flowers:Celgene, Prescription Solutions, Seattle Genetics, Millennium (unpaid), Genentech (unpaid) : Consultancy; Gilead, Spectrum, Millennium, Janssen: Research Funding.

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Imetelstat Treatment Leads to Durable Transfusion Independence (TI) in RBC Transfusion-Dependent (TD), Non-Del(5q) Lower Risk MDS Relapsed/Refractory to Erythropoiesis-Stimulating Agent (ESA) Who Are Lenalidomide (LEN) and HMA Naive

Blood ◽

10.1182/blood-2018-99-114877 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 463-463 ◽

Cited By ~ 5

Author(s):

David P. Steensma ◽

Uwe Platzbecker ◽

Koen Van Eygen ◽

Azra Raza ◽

Valeria Santini ◽

...

Keyword(s):

Board Of Directors ◽

Lower Risk ◽

Research Funding ◽

Employment Equity ◽

Advisory Committees ◽

Transfusion Independence ◽

Equity Ownership ◽

Grade 3 ◽

Rbc Transfusion

Abstract BACKGROUND: Patients with TD lower-risk (LR)-MDS relapsed or refractory to ESA have limited treatment options. Imetelstat is a first-in-class telomerase inhibitor that targets cells with short telomere lengths and active telomerase, characteristics observed in some MDS patients. IMerge is an ongoing global study of imetelstat in RBC TD patients with LR-MDS (IPSS Low or Int-1). In the first 32 patients enrolled, 8-week TI rate was 34%, with 24-week TI of 16%, and HI-E of 59%. The most frequently reported adverse events were reversible grade ≥3 cytopenias (Fenaux et al EHA 2018 Abstr S1157). Higher response rates were observed in patients (n=13) who were LEN and HMA naïve without del(5q). We report here results in an additional 25 LEN and HMA naïve patients without del(5q), with longer term follow-up of the 13 initial patients meeting the same criteria. METHODS: IMerge is a phase 2/3 trial (NCT02598661) that includes LR-MDS patients with a high transfusion burden (≥4 units / 8 weeks) who are relapsed/refractory to ESA or have sEPO >500 mU/mL. The additional 25 were required to be LEN and HMA naïve and lack del(5q). Imetelstat 7.5 mg/kg was administered IV every 4 weeks. In addition to the key endpoints noted above, secondary endpoints include safety, time to and duration of TI. Biomarkers are also being explored, including telomerase activity, hTERT, telomere length, and genetic mutations. RESULTS: Overall, for the 38 LEN/HMA naïve and non-del(5q) patients, median age was 71.5 years and 66% were men. 63% of patients were IPSS Low and 37% Int-1. Median prior RBC transfusion burden was 8.0 (range 4-14) U, and 71% had WHO 2008 RARS or RCMD-RS. 9/37 (24%) patients with evaluable sEPO levels had baseline level >500 mU/mL. As of July 2018, with a median follow-up of 25.8 months for the initial 13 patients, and 5.2 months for the 25 recently included patients, the 8-week RBC-TI rate was 37% (14/38). Durability of 24-week TI responses was demonstrated, with a median duration of 10 months and the longest ongoing response now >2 years. Among the patients achieving durable TI, all showed a Hb rise of ≥3.0 g/dL compared to baseline during the transfusion-free interval. Response rates were similar in RARS/RCMD-RS (33% [9/27]) and other patients (27% [3/11]), and those with baseline EPO levels >500 mU/mL (33% [3/9]) and ≤500 mU/mL (32% [9/28]). Reversible grade ≥3 neutropenia and thrombocytopenia were each reported in 58% of the patients. Liver function test (LFT) elevations were mostly grade 1/2. Reversible grade 3 LFTelevations were observed in 3 (8%) patients on study. An independent Hepatic Review Committee deemed the observed LFT elevations were not imetelstat-related hepatic toxicities. SUMMARY / CONCLUSIONS: In this cohort of 38 non-del(5q) LR-MDS patients with a high RBC transfusion burden who were ESA relapsed/refractory and naïve to LEN/HMA, single-agent imetelstat yielded a TI rate of 37%, with a median duration of 10 months and limited side effects. Durable responses were characterized by transfusion independence >24 weeks and accompanied by Hb rise. Updated data will be presented. Disclosures Steensma: Takeda: Consultancy; Syros: Research Funding; Otsuka: Membership on an entity's Board of Directors or advisory committees; Onconova: Consultancy; Novartis: Membership on an entity's Board of Directors or advisory committees; Kura: Research Funding; Janssen: Consultancy, Research Funding; H3 Biosciences: Research Funding; Celgene: Research Funding; Amphivena: Membership on an entity's Board of Directors or advisory committees; Acceleron: Consultancy. Platzbecker:Celgene: Research Funding. Van Eygen:Janssen: Consultancy, Research Funding; Roche: Research Funding; Amgen: Research Funding. Raza:Kura Oncology: Research Funding; Onconova: Research Funding, Speakers Bureau; Celgene: Research Funding; Novartis: Speakers Bureau; Geoptix: Speakers Bureau; Janssen: Research Funding; Syros: Research Funding. Santini:Amgen: Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria; AbbVie: Membership on an entity's Board of Directors or advisory committees; Otsuka: Consultancy; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Celgene: Honoraria, Research Funding. Germing:Celgene: Honoraria, Research Funding; Janssen: Honoraria; Novartis: Honoraria, Research Funding. Font:Celgene: Membership on an entity's Board of Directors or advisory committees. Samarina:Janssen: Research Funding. Díez-Campelo:Novartis: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Bussolari:Janssen: Employment, Equity Ownership. Sherman:Janssen: Employment, Equity Ownership. Sun:Janssen: Employment, Equity Ownership. Varsos:Janssen: Employment, Equity Ownership. Rose:Janssen: Employment, Equity Ownership. Fenaux:Roche: Honoraria; Otsuka: Honoraria, Research Funding; Jazz: Honoraria, Research Funding; Janssen: Honoraria, Research Funding; Celgene: Honoraria, Research Funding.

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Azacitidine (AZA) Prolongs Overall Survival in Older Patients with Acute Myeloid Leukemia (AML) with Poor Prognostic Karyotypes Compared with Conventional Care Regimens (CCR)

Blood ◽

10.1182/blood.v128.22.1638.1638 ◽

2016 ◽

Vol 128 (22) ◽

pp. 1638-1638 ◽

Cited By ~ 2

Author(s):

Hartmut Döhner ◽

Paresh Vyas ◽

John F. Seymour ◽

Valeria Santini ◽

Richard M. Stone ◽

...

Keyword(s):

Overall Survival ◽

Board Of Directors ◽

Older Patients ◽

Research Funding ◽

Complex Karyotype ◽

Employment Equity ◽

Advisory Committees ◽

Cytogenetic Abnormalities ◽

Poor Risk ◽

Equity Ownership

Abstract Background: Karyotype is the strongest independent prognostic factor for survival in AML. The randomized phase 3 AZA-AML-001 study of older patients with AML showed AZA prolonged overall survival (OS) compared with CCR (10.4 vs 6.5 months, respectively; P=0.101) (Dombret et al, Blood, 2015). In a prospective subanalysis of the study, AZA was shown to meaningfully prolong OS by 3.2 months compared with CCR (P=0.0185) in the subgroup of patients with NCCN-defined poor-risk cytogenetics (Döhner et al, Blood, 2014: Abstract 621). Aim: This analysis evaluates treatment effects of AZA vs CCR on OS in subgroups of patients with specific cytogenetic abnormalities as well as in patient subgroups defined by cytogenetic risk per modified European LeukemiaNet (ELN) recommendations (not considering molecular markers) (Döhner et al, Blood, 2010). Methods: Patients aged ≥65 years with newly diagnosed AML (>30% bone marrow [BM] blasts), ECOG performance status score ≤2, intermediate- or poor-risk cytogenetics per NCCN 2009 criteria, and WBC count ≤15x109/L were randomized to receive AZA (75 mg/m2/day [d] x7d/28d) or CCR: intensive chemotherapy (cytarabine 100-200mg/m2IV x7d + anthracycline IV x3d induction), low-dose ara-C (20mg SC BID x10d/28d), or best supportive care only. Karyotypes obtained from BM were reviewed centrally by an independent cytogeneticist. OS was evaluated in subgroups of patients with frequent specific abnormalities, including -5/del(5q), -7, -7/del(7q), abnormal (17p) or complex karyotype (based on specific abnormalities, patients may have been evaluated in more than one category). OS was also assessed for patients in ELN-defined karyotype risk subgroups: Intermediate (Int)-I (normal karyotype), Int-II (all abnormalities not classified as Favorable or Adverse), and Adverse karyotype. OS was assessed using Kaplan-Meier methods and compared using a weighted log-rank test. Results: Centrally reviewed cytogenetic data were available for 485/488 patients (99.4%). In all, 220 patients (45.4%; AZA n=114, CCR n=106) had Int-I karyotype, 111 patients (22.9%; AZA n=53, CCR n=58) had Int-II karyotype, and 154 patients (31.8%, AZA n=73, CCR n=81) had Adverse karyotype (Figure 1). OS was comparable between AZA and CCR in patients with Int-I karyotype (14.1 vs 10.1 months, respectively; hazard ratio [HR] 0.83, 95%CI 0.60, 1.1; P=0.44) and patients with Int-II karyotype (8.9 vs 9.6 months; HR 1.19, 95%CI 0.79, 1.8; P=0.78). There was a significant 2.4-month median OS difference in favor of AZA in patients with Adverse karyotype (5.3 vs 2.9 months with CCR; HR 0.71, 95%CI 0.51, 0.99; P=0.046; Figure 2), with 1-year survival rates of 29.1% vs 14.7% for AZA and CCR, respectively. AZA was associated with longer median OS and higher 1-year survival compared with CCR for all subgroups of patients with the specific cytogenetic abnormalities under study: -5/del(5q), -7, -7/del(7q), abnormal (17p), and complex karyotype, with HRs ranging from 0.54 to 0.69(Table). Median OS in the CCR arm was less than 3 months for each of these subgroups. Similar to what has been reported in MDS (Ravandi et al, Cancer, 2009), AML patients with chromosome 7 abnormalities responded particularly well to AZA, with an improvement in median OS of 4.1 months over CCR. Patients with complex karyotypes also had meaningful improvements in OS, with ~15% more AZA-treated patients alive at 1 year than CCR patients. Conclusions: Prognosis is dismal for older AML patients with adverse karyotypes, and is especially poor for patients with complex karyotypes. Median OS and 1-year survival in patients with ELN-defined Adverse karyotype treated with AZA were almost double those of patients treated with CCR. AZA-treated patients with the specific cytogenetic abnormalities and/or complex karyotype in this analysis had a 31-46% reduction in risk of death vs CCR, and proportions of patients alive at 1 year were 11-22% greater with AZA. These data suggest AZA should be the preferred treatment for older patients with AML and adverse karyotypes. Disclosures Seymour: Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel support, Speakers Bureau; AbbVie: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel support, Research Funding, Speakers Bureau; Genentech: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Gilead: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Janssen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Roche: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Takeda: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees. Santini:Astex: Consultancy; Amgen: Consultancy; Onconova: Consultancy; Novartis: Consultancy, Honoraria; Janssen: Consultancy, Honoraria; Celgene: Consultancy, Honoraria, Research Funding. Stone:Celator: Consultancy; Novartis: Consultancy; Abbvie: Consultancy, Membership on an entity's Board of Directors or advisory committees; Xenetic Biosciences: Consultancy; Agios: Consultancy; Amgen: Consultancy; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees; Karyopharm: Consultancy; Jansen: Consultancy; Pfizer: Consultancy; ONO: Consultancy; Juno Therapeutics: Consultancy; Merck: Consultancy; Roche: Consultancy; Seattle Genetics: Consultancy; Sunesis Pharmaceuticals: Consultancy. Al-Ali:Celgene: Consultancy, Honoraria, Research Funding; Novartis: Consultancy, Honoraria, Research Funding. Morrill:Celgene: Employment, Equity Ownership. Songer:Celgene: Employment, Equity Ownership. Weaver:Celgene Corporation: Employment, Equity Ownership. Skikne:Celgene: Employment, Equity Ownership. Beach:Celgene Corporation: Employment, Equity Ownership. Dombret:Agios: Honoraria; Ambit (Daiichi Sankyo): Honoraria; Menarini: Honoraria; Menarini: Honoraria; Servier: Honoraria; Sunesis: Honoraria; Karyopharm: Honoraria; Kite Pharma.: Honoraria, Research Funding; Astellas: Honoraria; Janssen: Honoraria; Seattle Genetics: Honoraria; Roche/Genentech: Honoraria, Research Funding; Amgen: Consultancy, Honoraria, Research Funding; Pfizer: Honoraria; Ariad: Honoraria, Research Funding; Novartis: Honoraria; Celgene: Consultancy, Honoraria; Jazz Pharma: Honoraria, Research Funding.

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Hepcidin Suppression By Momelotinib Is Associated with Increased Iron Availability and Erythropoiesis in Transfusion-Dependent Myelofibrosis Patients

Blood ◽

10.1182/blood-2018-99-111349 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 4282-4282 ◽

Cited By ~ 3

Author(s):

Stephen T Oh ◽

Moshe Talpaz ◽

Aaron T. Gerds ◽

Vikas Gupta ◽

Srdan Verstovsek ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Serum Iron ◽

Iron Availability ◽

Spleen Volume ◽

Employment Equity ◽

Advisory Committees ◽

Equity Ownership ◽

La Jolla ◽

Rbc Transfusion

Abstract Introduction: Patients develop anemia as a result of myelofibrosis (MF) or its treatment, including Janus kinase (JAK) inhibitors. However, momelotinib (MMB), a JAK1/2 and Activin A receptor type I (ACVR1) inhibitor with demonstrated clinical activity in MF, improved anemia in prior clinical trials. JAK1/2 and ACVR1 respond to inflammation and iron stores to control iron availability through hepcidin, the key regulator of the entry of iron into circulation. Like other inflammatory diseases, MF is characterized by high hepcidin. MMB inhibited ACVR1 to modulate hepcidin and ameliorate anemia in a rodent model (Asshoff, Blood 2017). The impact of MMB was investigated on blood hepcidin, along with markers of iron storage and availability, erythropoiesis, and inflammation to explore mechanisms of the favorable effects of MMB on MF-associated anemia. Methods: In a phase 2 open-label study, MMB 200 mg once daily was given for 24 weeks to transfusion-dependent (TD; ≥4 units red blood cells [RBC] transfusion in the 8 weeks prior to first dose of MMB) patients with primary or post-ET/PV MF (age ≥18 yrs, required MF therapy, CrCl ≥ 60 mL/min, platelets ≥50 K, and absence of Gr ≥2 peripheral neuropathy, baseline palpable spleen was not required, patients with prior splenectomy were excluded). Patients were evaluated for MMB efficacy and safety. Total symptom score (TSS) was based on a modified Myeloproliferative Neoplasm Symptom Assessment Form. Transfusion-independent response/non-response (TI-R/NR) was defined as RBC transfusion-independence ≥12 weeks at any time on study. Serial blood samples were analyzed for a panel of biomarkers and liver iron content (LIC) was measured by MRI. Blood hepcidin was evaluated at every study visit in the morning (8-10am) pre-dose and 6 hours post-dose using a mass spectrometry assay and, prior to first dose, the normal daily increase of blood hepcidin was observed in half the population. Results: 41 patients (mean age 70, 63% male, 88% white) received MMB. By week 24, 14 (34.1%, 90% CI: 22.0-48.1%) patients had a TI-R and 39.0% had no RBC transfusion for ≥8 weeks at any time (90% CI: 26.2-53.1%). Six patients (15.8%, 90% CI: 7.1-28.8%) had a ≥50% reduction from baseline to week 24 in TSS and 5 patients (12.2%, 90% CI: 4.9-23.9%) had a ≥35% reduction in spleen volume; in those patients with week 24 data, the TSS and splenic response rates were 28.6% and 19.2% respectively. TSS and spleen volume assessments were not available for 17 (44.5%) and 15 (36.6%) patients, respectively, and these patients were considered non-responders. Adverse events were consistent with previous studies of MMB in MF, with cough, diarrhea, nausea, and fatigue as the most common. AEs ≥Gr 3 were experienced by 21 patients, most commonly anemia and neutropenia. At every study visit, median blood hepcidin decreased 6 hours after dosing with MMB (Fig. 1). Daily inhibition of hepcidin did not lead to an increase in serum iron for the entire population. However, serum iron, transferrin, hemoglobin, reticulocytes, and hematocrit increased at week 2 in patients with TI-R. Following this peak, serum iron decreased while hemoglobin, hematocrit and platelet count increased through week 24. At baseline, TI-R was associated with lower hepcidin, LIC, serum iron, reduced inflammation (C-reactive protein and ferritin), and higher hematocrit, erythrocytes, reticulocytes, platelets, and hemoglobin than TI-NR (Fig. 2). In multivariable analysis, TI-R was strongly associated with baseline hemoglobin ≥8g/dL (p=0.036) and lower morning hepcidin (p=0.013), weakly associated with younger age (p=0.070) and lower DIPSS score (p=0.075), but not with gender, type of MF (primary vs post-ET/PV), spleen volume, TSS, or JAK2V617F mutation. Conclusion: Safety findings and rate of TI-R were similar to TD MF patients in other MMB trials. Consistent with preclinical data, daily MMB treatment led to a transient decrease in blood hepcidin. In patients with TI-R, hepcidin suppression was associated with increased iron availability and markers of erythropoiesis. At baseline, TI-R associated with reduced inflammation, lower hepcidin, and increased markers of erythropoiesis and bone marrow function. Overall, the study suggests that transient modulation of hepcidin by MMB is sufficient to boost erythropoiesis in those transfusion-independent MF patients with lower baseline inflammation and greater erythropoietic potential. Disclosures Oh: Takeda: Research Funding; Janssen: Research Funding; CTI Biopharma: Research Funding; Gilead: Research Funding; Incyte: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. Gerds:Celgene: Consultancy; Apexx Oncology: Consultancy; CTI Biopharma: Consultancy; Incyte: Consultancy. Gupta:Novartis: Consultancy, Honoraria, Research Funding; Incyte: Research Funding. 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. Mesa:Novartis: Consultancy; Celgene: Research Funding; NS Pharma: Research Funding; Genentech: Research Funding; Incyte Corporation: Research Funding; Promedior: Research Funding; Pfizer: Research Funding; CTI Biopharma: Research Funding; Gilead: Research Funding; UT Health San Antonio - Mays Cancer Center: Employment. Miller:Gilead Sciences, Inc.: Consultancy, Research Funding; Incyte: Consultancy, Honoraria, Research Funding, Speakers Bureau; Novartis: Honoraria, Research Funding, Speakers Bureau. Heaney:Decipheral: Research Funding; Novartis: Research Funding; Blueprint: Research Funding; Incyte: Research Funding; Roche: Consultancy, Research Funding. O'Connell:Incyte: Research Funding. Arcasoy:Gilead Sciences, Inc.: Research Funding; Incyte: Research Funding; CTI BioPharma: Research Funding; Samus Therapeutics: Research Funding. Zhang:Gilead Sciences, Inc.: Employment. Kawashima:Gilead Sciences, Inc.: Employment, Equity Ownership. Ganz:Intrinsic LifeScience: Consultancy, Equity Ownership, Membership on an entity's Board of Directors or advisory committees; Silarus Pharma: Consultancy, Equity Ownership; Keryx Pharma: Consultancy, Research Funding; Akebia: Consultancy, Research Funding; Vifor: Consultancy; Gilead: Consultancy; Ablynx: Consultancy; La Jolla Pharma: Consultancy, Patents & Royalties: Patent licensed to La Jolla Pharma by UCLA. Baker Brachmann:Gilead Sciences, Inc.: Employment, Equity Ownership.

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Progression-Free Survival Analysis of Denosumab Vs Zoledronic Acid in Intent to Transplant Multiple Myeloma Patients Based on Treatment Regimen and Baseline Characteristics

Blood ◽

10.1182/blood-2019-127290 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 606-606 ◽

Cited By ~ 7

Author(s):

Evangelos Terpos ◽

Ramón García-Sanz ◽

Kazuyuki Shimizu ◽

Wolfgang Willenbacher ◽

Anthony Glennane ◽

...

Keyword(s):

Multiple Myeloma ◽

Zoledronic Acid ◽

Board Of Directors ◽

Research Funding ◽

Performance Status ◽

Employment Equity ◽

Advisory Committees ◽

Treatment Regimens ◽

Equity Ownership ◽

Baseline Characteristics

Introduction: Denosumab is a monoclonal antibody targeting Receptor Activator of Nuclear Factor-Kappa B Ligand (RANKL) that has been shown to reduce skeletal related events associated with bone lesions in patients with multiple myeloma and solid tumors. Results from the full primary analysis of 1718 patients with newly diagnosed multiple myeloma in an international double blind, randomized, controlled phase 3 (20090482) study that assessed the efficacy of denosumab (Dmab) vs zoledronic acid (ZA) for preventing SREs met its primary end point of non-inferiority regarding time to first SRE. The analysis of the PFS exploratory endpoint showed a clinically meaningful 10.7 months median PFS benefit (HR, 0.82; 95% CI, 0.68-0.99; descriptive P= 0.036) of Dmab vs ZA. This benefit was most pronounced in patients who were stratified into the "intent to undergo Autologous Stem Cell Transplant (ASCT)" group at randomization. Thus, we present an in-depth analysis of relevant baseline characteristics, treatment regimens and PFS outcome in patients with intent to undergo transplant receiving Dmab and ZA. Methods: Adult patients with newly diagnosed multiple myeloma (NDMM) and stratified as "intent to undergo ASCT" at randomization were included in this analysis. Patients received subcutaneous denosumab (120 mg) plus intravenous placebo or intravenous zoledronic acid (4 mg) plus subcutaneous placebo in 4-week cycles. In this subgroup, the PFS outcome was examined. Baseline characteristics and treatment regimens were compared between treatment arms. Results: 54.1% of the 1718 enrolled patients were stratified into "intent to undergo ASCT" as part of their front-line therapy, and 61.8% of "intent to undergo ASCT" did receive an ASCT. In the "intent to undergo ASCT" group, 19.6% patients had disease progression in the Dmab arm compared to 28.0% in the ZA arm (HR 0.65 (0.49-0.85)) (Figure 1). No imbalance in terms of triplet therapy use between the two study arms (TABLE 1). 55.1% in Dmab vs 52.6% in ZA arm received Triplet Therapies which included Bortezomib, Cyclophosphamide, Dexamethasone (VCD), Bortezomib, Thalidomide, Dexamethasone (VTD), Cyclophosphamide, Thalidomide, Dexamethasone (CTD), or Bortezomib, Lenalidomide, Dexamethasone (VRD). The percentage of triplet therapies used in the "intent to undergo ASCT"patients was higher than in patients with no intent to undergo ASCT. Percentage of patients with ECOG performance status 2 was 19.4% in the Dmab group vs 18.6% in the ZA group. 26.2% of patients in the Dmab arm and 25% in the ZA arm had Multiple Myeloma ISS stage III upon diagnosis. Among intent to transplant patients there was no imbalance in terms of age, performance status, ISS stage, risk status, weight, bone marrow plasma cell % between the ZA and the Dmab arm Conclusion: Results from this post-hoc subgroup analysis suggest a more profound PFS benefit in the "intent to undergo ASCT" patient subgroup. Multiple myeloma treatment received in the intent to undergo transplant subjects was similar between the denosumab and zoledronic acid arms. No significant imbalance in demographics or baseline disease characteristics was observed between the two treatment arms. Disclosures Terpos: Janssen: Honoraria, Other: Travel expenses, Research Funding; Amgen: Honoraria, Research Funding; Takeda: Honoraria, Other: Travel expenses, Research Funding; Medison: Honoraria; Genesis: Honoraria, Other: Travel expenses, Research Funding; Celgene: Honoraria. Shimizu:Medical Biological Laboratory: Consultancy; Takeda: Speakers Bureau; Daiichi: Consultancy; Amgen: Consultancy; Fujimoto: Consultancy. Willenbacher:Abbvie: Consultancy, Honoraria; Sandoz: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Merck: Consultancy, Membership on an entity's Board of Directors or advisory committees; Takeda: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; oncotyrol: Employment, Research Funding; Gilead Science: 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, Research Funding; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; European Commission: Research Funding; Janssen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Bristol-Myers Squibb: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Tirol Program: Research Funding; Fujimoto: Consultancy, Honoraria; Myelom- und Lymphomselbsthilfe Österreich: Consultancy, Honoraria; Sanofi: Membership on an entity's Board of Directors or advisory committees; Pfizer: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; IQVIA: Membership on an entity's Board of Directors or advisory committees. Glennane:amgen: Employment, Equity Ownership. Dai:Amgen: Employment, Equity Ownership. Pasteiner:Amgen: Employment, Equity Ownership. Raje:Amgen Inc.: Consultancy; Bristol-Myers Squibb: Consultancy; Celgene Corporation: Consultancy; Takeda: Consultancy; Janssen: Consultancy; Merck: Consultancy.

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Rapid and Robust Mobilization of CD34+ HSCs without G-CSF Following Administration of Mgta-145 Alone or in Combination with Plerixafor

Blood ◽

10.1182/blood-2019-127523 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 1961-1961

Author(s):

John F. DiPersio ◽

Jonathan Hoggatt ◽

Steven Devine ◽

Lukasz Biernat ◽

Haley Howell ◽

...

Keyword(s):

Single Dose ◽

Adverse Events ◽

Board Of Directors ◽

Preliminary Data ◽

Research Funding ◽

Fold Change ◽

Employment Equity ◽

Advisory Committees ◽

Cd34 Cells ◽

Equity Ownership

Background Granulocyte colony-stimulating factor (G-CSF) is the standard of care for mobilization of hematopoietic stem cells (HSCs). G-CSF requires 4-7 days of injections and often multiple aphereses to acquire sufficient CD34+ cells for transplant. The number of CD34+ HSCs mobilized can be variable and patients who fail to mobilize enough CD34+ cells are treated with the combination of G-CSF plus plerixafor. G-CSF use is associated with bone pain, nausea, headaches, fatigue, rare episodes of splenic rupture, and is contraindicated for patients with autoimmune and sickle cell disease. MGTA-145 (GroβT) is a CXCR2 agonist. MGTA-145, in combination with plerixafor, a CXCR4 inhibitor, has the potential to rapidly and reliably mobilize robust numbers of HSCs with a single dose and same-day apheresis for transplant that is free from G-CSF. MGTA-145 plus plerixafor work synergistically to rapidly mobilize HSCs in both mice and non-human primates (Hoggatt, Cell 2018; Goncalves, Blood 2018). Based on these data, Magenta initiated a Phase 1 dose-escalating study to evaluate the safety, PK and PD of MGTA-145 as a single agent and in combination with plerixafor. Methods This study consists of four parts. In Part A, healthy volunteers were dosed with MGTA-145 (0.0075 - 0.3 mg/kg) or placebo. In Part B, MGTA-145 dose levels from Part A were selected for use in combination with a clinically approved dose of plerixafor. In Part C, a single dose MGTA-145 plus plerixafor will be administered on day 1 and day 2. In Part D, MGTA-145 plus plerixafor will be administered followed by apheresis. Results MGTA-145 monotherapy was well tolerated in all subjects dosed (Table 1) with no significant adverse events. Some subjects experienced mild (Grade 1) transient lower back pain that dissipated within minutes. In the ongoing study, the combination of MGTA-145 with plerixafor was well tolerated, with some donors experiencing Grade 1 and 2 gastrointestinal adverse events commonly observed with plerixafor alone. Pharmacokinetic (PK) exposure and maximum plasma concentrations increased dose proportionally and were not affected by plerixafor (Fig 1A). Monotherapy of MGTA-145 resulted in an immediate increase in neutrophils (Fig 1B) and release of plasma MMP-9 (Fig 1C). Neutrophil mobilization plateaued within 1-hour post MGTA-145 at doses greater than 0.03 mg/kg. This plateau was followed by a rebound of neutrophil mobilization which correlated with re-expression of CXCR2 and presence of MGTA-145 at pharmacologically active levels. Markers of neutrophil activation were relatively unchanged (<2-fold vs baseline). A rapid and statistically significant increase in CD34+ cells occurred @ 0.03 and 0.075 mg/kg of MGTA-145 (p < 0.01) relative to placebo with peak mobilization (Fig 1D) 30 minutes post MGTA-145 (7-fold above baseline @ 0.03 mg/kg). To date, the combination of MGTA-145 plus plerixafor mobilized >20/µl CD34s in 92% (11/12) subjects compared to 50% (2/4) subjects receiving plerixafor alone. Preliminary data show that there was a significant increase in fold change relative to baseline in CD34+ cells (27x vs 13x) and phenotypic CD34+CD90+CD45RA- HSCs (38x vs 22x) mobilized by MGTA-145 with plerixafor. Mobilized CD34+ cells were detectable at 15 minutes with peak mobilization shifted 2 - 4 hours earlier for the combination vs plerixafor alone (4 - 6h vs 8 - 12h). Detailed results of single dose administration of MGTA-145 and plerixafor given on one day as well as also on two sequential days will be presented along with fully characterized graft analysis post apheresis from subjects given MGTA-145 and plerixafor. Conclusions MGTA-145 is safe and well tolerated, as a monotherapy and in combination with plerixafor and induced rapid and robust mobilization of significant numbers of HSCs with a single dose in all subjects to date. Kinetics of CD34+ cell mobilization for the combination was immediate (4x increase vs no change for plerixafor alone @ 15 min) suggesting the mechanism of action of MGTA-145 plus plerixafor is different from plerixafor alone. Preliminary data demonstrate that MGTA-145 when combined with plerixafor results in a significant increase in CD34+ fold change relative to plerixafor alone. Magenta Therapeutics intends to develop MGTA-145 as a first line mobilization product for blood cancers, autoimmune and genetic diseases and plans a Phase 2 study in multiple myeloma and non-Hodgkin lymphoma in 2020. Disclosures DiPersio: Magenta Therapeutics: Equity Ownership; NeoImmune Tech: Research Funding; Cellworks Group, Inc.: Membership on an entity's Board of Directors or advisory committees; Karyopharm Therapeutics: Consultancy; Incyte: Consultancy, Research Funding; RiverVest Venture Partners Arch Oncology: Consultancy, Membership on an entity's Board of Directors or advisory committees; WUGEN: Equity Ownership, Patents & Royalties, Research Funding; Macrogenics: Research Funding, Speakers Bureau; Bioline Rx: Research Funding, Speakers Bureau; Celgene: Consultancy; Amphivena Therapeutics: Consultancy, Research Funding. Hoggatt:Magenta Therapeutics: Consultancy, Equity Ownership, Research Funding. Devine:Kiadis Pharma: Other: Protocol development (via institution); Bristol Myers: Other: Grant for monitoring support & travel support; Magenta Therapeutics: Other: Travel support for advisory board; My employer (National Marrow Donor Program) has equity interest in Magenta. Biernat:Medpace, Inc.: Employment. Howell:Magenta Therapeutics: Employment, Equity Ownership. Schmelmer:Magenta Therapeutics: Employment, Equity Ownership. Neale:Magenta Therapeutics: Employment, Equity Ownership. Boitano:Magenta Therapeutics: Employment, Equity Ownership, Patents & Royalties. Cooke:Magenta Therapeutics: Employment, Equity Ownership, Patents & Royalties. Goncalves:Magenta Therapeutics: Employment, Equity Ownership, Patents & Royalties. Raffel:Magenta Therapeutics: Employment, Equity Ownership. Falahee:Magenta Therapeutics: Employment, Equity Ownership, Patents & Royalties. Morrow:Magenta Therapeutics: Employment, Equity Ownership, Patents & Royalties. Davis:Magenta Therapeutics: Employment, Equity Ownership.

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Treatment Patterns and Outcomes in Elderly Patients with Newly Diagnosed Multiple Myeloma: Results from the Connect® MM Registry

Blood ◽

10.1182/blood-2019-126205 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 3129-3129

Author(s):

Hans C. Lee ◽

Sikander Ailawadhi ◽

Cristina Gasparetto ◽

Sundar Jagannath ◽

Robert M. Rifkin ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Causes Of Death ◽

Age Groups ◽

Treatment Patterns ◽

Age Group ◽

Newly Diagnosed ◽

Employment Equity ◽

Advisory Committees ◽

Equity Ownership

Background: Multiple myeloma (MM) is common among the elderly, with 35% of patients (pts) diagnosed being aged ≥75 years (y). With increasing overall life expectancy, the incidence and prevalence of newly diagnosed and previously treated MM patients ≥80 y is expected to increase over time. Because elderly pts are often excluded from clinical trials, data focused on their treatment patterns and clinical outcomes are lacking. The Connect® MM Registry (NCT01081028) is a large, US, multicenter, prospective observational cohort study of pts with newly diagnosed MM (NDMM) designed to examine real-world diagnostic patterns, treatment patterns, clinical outcomes, and health-related quality of life patient-reported outcomes. This analysis reviews treatment patterns and outcomes in elderly pts from the Connect MM Registry. Methods: Pts enrolled in the Connect MM registry at 250 community, academic, and government sites were included in this analysis. Eligible pts were adults aged ≥18 y with symptomatic MM diagnosed ≤2 months before enrollment, as defined by International Myeloma Working Group criteria; no exclusion criteria were applied. For this analysis, pts were categorized into 4 age groups: <65, 65 to 74, 75 to 84, and ≥85 y. Pts were followed from time of enrollment to the earliest of disease progression (or death), loss to follow-up, or data cutoff date of February 7, 2019. Descriptive statistics were used for baseline characteristics and treatment regimens. Survival outcomes were analyzed using Cox regression. Time to progression (TTP) analysis excluded causes of death not related to MM. Results: Of 3011 pts enrolled (median age 67 y), 132 (4%) were aged ≥85 y, and 615 (20%) were aged 75-84 y at baseline. More pts aged ≥85 y had poor prognostic factors such as ISS stage III disease and reduced hemoglobin (<10 g/dL or >2 g/dL <LLN) compared with other age groups, although no notable differences between creatinine and calcium levels were observed across age groups (Table). A lower proportion of elderly pts (75-84 and ≥85 y) received triplet regimens as frontline therapy. More elderly pts received a single novel agent, whereas use of 2 novel agents was more common in younger pts (Table). The most common frontline regimens among elderly pts were bortezomib (V) + dexamethasone (D), followed by lenalidomide (R) + D, whereas those among younger pts included RVD, followed by VD and CyBorD (Table). No pt aged ≥85 y, and 4% of pts aged 75-84 y received high-dose chemotherapy and autologous stem cell transplant (vs 61% in the <65 y and 37% in the 65-74 y age group). The most common maintenance therapy was RD in pts ≥85 y (although the use was low) and R alone in other age groups (Table). In the ≥85 y group, 27%, 10%, and 4% of pts entered 2L, 3L, and 4L treatments respectively, vs 43%, 23%, and 13% in the <65 y group. Progression-free survival was significantly shorter in the ≥85 y age group vs the 75-84 y age group (P=0.003), 65-74 y age group (P<0.001), and <65 y age group (P<0.001; Fig.1). TTP was significantly shorter in the ≥85 y group vs the <65 y group (P=0.020); however, TTP was similar among the 65-74 y, 75-84 y, and ≥85 y cohorts (Fig. 2). Overall survival was significantly shorter in the ≥85 y group vs the 75-84 y, 65-74 y, and <65 y groups (all P<0.001; Fig. 3). The mortality rate was lowest (46%) during first-line treatment (1L) in pts aged ≥85 y (mainly attributed to MM progression) and increased in 2L and 3L (47% and 54%, respectively); a similar trend was observed in the younger age groups. The main cause of death was MM progression (29% in the ≥85 y vs 16% in the <65 y group). Other notable causes of death in the ≥85 y group included cardiac failure (5% vs 2% in <65 y group) and pneumonia (5% vs 1% in <65 y group). Conclusions: In this analysis, elderly pts received similar types of frontline and maintenance regimens as younger pts, although proportions varied with decreased use of triplet regimens with age. Considering similarities in TTP across the 65-74 y, 75-84 y, and ≥85 y cohorts, these real-world data support active treatment and aggressive supportive care of elderly symptomatic pts, including with novel agents. Additionally, further clinical studies specific to elderly patients with MM should be explored. Disclosures Lee: Amgen: Consultancy, Research Funding; GlaxoSmithKline plc: Research Funding; Sanofi: Consultancy; Daiichi Sankyo: Research Funding; Celgene: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding. Ailawadhi:Janssen: Consultancy, Research Funding; Takeda: Consultancy; Pharmacyclics: Research Funding; Amgen: Consultancy, Research Funding; Celgene: Consultancy; Cellectar: Research Funding. Gasparetto:Celgene: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed ; Janssen: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed ; BMS: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed . Jagannath:AbbVie: Consultancy; Merck & Co.: Consultancy; Bristol-Myers Squibb: Consultancy; Karyopharm Therapeutics: Consultancy; Celgene Corporation: Consultancy; Janssen Pharmaceuticals: Consultancy. Rifkin:Celgene: Membership on an entity's Board of Directors or advisory committees; Takeda: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees. Durie:Amgen, Celgene, Johnson & Johnson, and Takeda: Consultancy. Narang:Celgene: Speakers Bureau. Terebelo:Celgene: Honoraria; Jannsen: Speakers Bureau; Newland Medical Asociates: Employment. Toomey:Celgene: Consultancy. Hardin:Celgene: Membership on an entity's Board of Directors or advisory committees. Wagner:Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees; American Cancer Society: Other: Section editor, Cancer journal. Omel:Celgene, Takeda, Janssen: Other: Patient Advisory Committees. Srinivasan:Celgene: Employment, Equity Ownership. Liu:TechData: Consultancy. Dhalla:Celgene: Employment. Agarwal:Celgene Corporation: Employment, Equity Ownership. Abonour:BMS: Consultancy; Celgene: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding.

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