Although long-term proteasome inhibitor therapy improves outcomes in multiple myeloma, many patients cannot tolerate long-term treatment or might require or prefer to continue treatment outside the hospital or clinic. The US MM-6 study is evaluating the in-class transition from parenteral bortezomib-to oral ixazomibbased therapy in routine clinical practice. Preliminary results indicate feasibility, prolonged therapy duration, promising efficacy, and treatment adherence and satisfaction. Background: The ongoing US MM-6 study is investigating in-class transition (iCT) from parenteral bortezomibbased induction to all-oral IRd (ixazomib-lenalidomide-dexamethasone) with the aim of increasing proteasome inhibitor (PI)-based treatment adherence and duration while maintaining patients' health-related quality of life (HRQoL) and improving outcomes. Patients and Methods: US community sites are enrolling nonetransplanteligible patients with newly diagnosed multiple myeloma (MM) with no evidence of progressive disease after 3 cycles of bortezomib-based therapy to receive IRd (up to 39 cycles or until progression or toxicity). The patients use mobile or wearable digital devices to collect actigraphy (activity and sleep) data and electronically complete HRQoL, treatment satisfaction and medication adherence questionnaires. The primary endpoint is progressionfree survival. The key secondary endpoints include response rates and therapy duration. Results: At the data cutoff, 84 patients had been treated (median age 73 years; 44% aged ! 75 years; 49% men; 15% Black or African American; and 10% Hispanic or Latino). Of the 84 patients, 62% were continuing therapy. The mean duration of total PI therapy was 10.1 months and for the IRd regimen was 7.3 months. With an 8-month median follow-up, the 12-month progression-free survival rate was 86% (95% confidence interval, 73%-93%) from both the start of bortezomib-based treatment and the start of IRd. The overall response rate was 62% (complete response, 4%; very good partial response, 25%; partial response, 33%) after bortezomib-based induction and 70% (complete response, 26%; very good partial response, 29%; partial response, 15%) after iCT. The IRd safety profile was consistent with previous clinical trial data, and HRQoL and treatment satisfaction were maintained. Conclusion:
Background Ixazomib, the first oral proteasome inhibitor, has been approved for >3 years in >70 countries, for the treatment of RRMM pts who have received ≥1 prior therapy, on the basis of the TOURMALINE-MM1 study, which reported an overall response rate (ORR) of 78% and median progression free survival (PFS) of 20.6 mos. Although outcomes and tolerability in routine clinical practice often differ from data reported in clinical trials, growing evidence suggest that outcomes in patients treated with ixazomib-based regimens are comparable to those in the Phase 3 TOURMALINE-MM1 trial. We report on an expanded pooled analysis with longer follow-up of IRd therapy from the INSIGHT MM study (NCT02761187) and the Czech Registry of Monoclonal Gammopathies (RMG) to evaluate the effectiveness of IRd in RRMM pts in routine clinical practice. Methods INSIGHT MM is a large, prospective, observational study which has enrolled over 4,200 adult pts with MM from Europe (plus Israel, EUR), the US, Asia, and Latin America, with a planned follow-up of ≥5 years. The RMG comprises clinical data for >6,000 MM pts enrolled at 19 Czech and 4 Slovak centers. Eligible pts had 1-3 (INSIGHT) or ≥1 prior therapy (RMG) including an IR-based regimen. Individual pt level data on demographics, disease characteristics, treatment history, effectiveness, and safety from INSIGHT and RMG were integrated and analyzed. Best response or time to first response and PFS were determined as per investigator assessment, using IMWG criteria. PFS, duration of treatment (DOT), and overall survival (OS) were estimated using Kaplan Meier (KM) methodology, applying an exclusion criterion to account for immortal time bias (INSIGHT only). Results At data cutoff of 22 Nov 2018, 217 pts (83 in INSIGHT and 134 in RMG) from 11 countries had been included: 191 (88%) from EUR, 17 (8%) from the US, and 9 (4%) from Taiwan; 89% of pts were treated in an academic facility. At diagnosis, 32% of pts had ISS Stage III disease, 78% had bone lesions, 46% had anemia, and 12% had elevated creatinine. At study start, median age was 67 years with 12% >75 years; 58%/14% of pts had ECOG performance status 1/2. The distribution of immunoglobulin (Ig) heavy and light chain MM was as expected; 69% of pts had IgG MM. Overall, 21% of pts had extramedullary disease. Prior therapies included: bortezomib (90%), stem cell transplant (60%), thalidomide (47%), lenalidomide (26%), carfilzomib (8%), daratumumab (6%), and pomalidomide (2%). Median time from diagnosis to start of IRd therapy was 42.1 mos; 43%/35%/22% of pts received IRd at 2nd/3rd/≥4th line. The most common reasons for starting IRd were relapse/progression (87%) and insufficient response (10%). The most common CRAB criteria present were bone lesions (48%) and anemia (18%). Median duration of follow-up was 12.6 mos in all pts. At data cutoff, 117 (54%) pts had discontinued IRd; median DOT was 11.9 (95% CI: 9.4-15.2) mos; at 12 mos, 49% (41.3-56.2) of pts were still on treatment (KM estimates). Data on best response to therapy were available for 152 pts. The ORR was 74%, with 36% ≥VGPR; ORR with IRd at 2nd/3rd/ ≥4th-line therapy was 82%/71%/59%, including 43%/37%/17% ≥VGPR. Median time to first response was 1.2 mos (RMG); median time to best response was 3.7 mos (INSIGHT). Median PFS was 21.6 (95% CI: 13.6-26.7) mos across all lines. PFS rate at 12 mos was 62%, and 86 (40%) pts had progressed at data cutoff. Median time to next therapy (TTNT) was 31.5 (95% CI: 24.5-35.9) mos, with a 12-month rate of 74% across all lines. Overall, 60 (28%) pts received subsequent therapies including daratumumab (22%), pomalidomide (22%), bortezomib (20%), carfilzomib (17%), lenalidomide (15%), and thalidomide (12%). At data cutoff, 53 (24%) pts had died. Median OS was 36.7 (95% CI: 24.4-NR) mos, with 79% of pts alive at 12 mos (Figure). Regarding safety, ixazomib and lenalidomide dose reductions were required in 16% and 36% of pts, respectively, including 10% and 21% who required dose reductions due to AEs. Conclusions These findings show that the effectiveness of IRd in routine clinical practice (ORR 74%, median PFS 21.6 mos) is comparable to the efficacy of IRd reported in the registrational TOURMALINE MM1 trial (ORR 78%, median PFS 20.6 mos). IRd is well tolerated with no new safety signals, and low rates of dose reductions due to AEs for ixazomib (10%) and lenalidomide (21%). Outcomes should be interpreted with caution due to limited maturity of data. Disclosures Hajek: Janssen: Honoraria, Other: Consultant or advisory relationship, Research Funding; Amgen: Honoraria, Other: Consultant or advisory relationship, Research Funding; Celgene: Honoraria, Other: Consultant or advisory relationship, Research Funding; AbbVie: Other: Consultant or advisory relationship; Bristol-Myers Squibb: Honoraria, Other: Consultant or advisory relationship, Research Funding; Novartis: Other: Consultant or advisory relationship, Research Funding; PharmaMar: Honoraria, Other: Consultant or advisory relationship; Takeda: Honoraria, Other: Consultant or advisory relationship, Research Funding. Minarik:Celgene: Consultancy, Honoraria, Research Funding; Amgen, BMS, Janssen-Cilag, Takeda: Consultancy, Honoraria. Straub:Amgen, Takeda, Celgene: Consultancy. Berdeja:Amgen Inc, BioClinica, Celgene Corporation, CRISPR Therapeutics, Bristol-Myers Squibb Company, Janssen Biotech Inc, Karyopharm Therapeutics, Kite Pharma Inc, Prothena, Servier, Takeda Oncology: Consultancy; AbbVie Inc, Amgen Inc, Acetylon Pharmaceuticals Inc, Bluebird Bio, Bristol-Myers Squibb Company, Celgene Corporation, Constellation Pharma, Curis Inc, Genentech, Glenmark Pharmaceuticals, Janssen Biotech Inc, Kesios Therapeutics, Lilly, Novartis, Poseida: Research Funding; Poseida: Research Funding. Boccadoro:AbbVie: Honoraria; Mundipharma: Research Funding; Novartis: Honoraria, Research Funding; Bristol-Myers Squibb: Honoraria, Research Funding; Sanofi: Honoraria, Research Funding; Celgene: Honoraria, Research Funding; Amgen: Honoraria, Research Funding; Janssen: Honoraria, Research Funding. Spencer:AbbVie: 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, Speakers Bureau; Haemalogix: Consultancy, Honoraria, 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, Speakers Bureau; Secura Bio: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Servier: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Specialised Therapeutics Australia: Consultancy, Honoraria; Sanofi: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Janssen Oncology: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Amgen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. van Rhee:Karyopharm Therapeutics: Consultancy; Kite Pharma: Consultancy; Adicet Bio: Consultancy; EUSA: Consultancy; Castleman Disease Collaborative Network: Consultancy; Takeda: Consultancy; Sanofi Genzyme: Consultancy. Thompson:Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; VIA Oncology: Membership on an entity's Board of Directors or advisory committees; Adaptive: Membership on an entity's Board of Directors or advisory committees; UpToDate: Patents & Royalties: Myeloma reviewer; GSK: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees; Doximity: Equity Ownership, Membership on an entity's Board of Directors or advisory committees; AbbVie: Research Funding; BMS: Research Funding; Lynx Bio: Research Funding. Abonour:BMS: Consultancy; Celgene: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding. Chari:Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Oncoceutics: Research Funding; Novartis Pharmaceuticals: Research Funding; GlaxoSmithKline: Research Funding; Array Biopharma: Research Funding; Karyopharm: Consultancy, Membership on an entity's Board of Directors or advisory committees; Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Millennium/Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Bristol-Myers Squibb: Consultancy; Pharmacyclics: Research Funding; Seattle Genetics: Membership on an entity's Board of Directors or advisory committees, Research Funding; Sanofi: Membership on an entity's Board of Directors or advisory committees. Cook:Karyopharm: Consultancy, Honoraria, Speakers Bureau; Celgene: Consultancy, Honoraria, Research Funding, Speakers Bureau; Sanofi: Consultancy, Honoraria, Speakers Bureau; Takeda: Consultancy, Honoraria, Research Funding, Speakers Bureau; Janssen: Consultancy, Honoraria, Research Funding, Speakers Bureau. Costello:Takeda: Honoraria, Research Funding; Janssen: Research Funding; Celgene: Consultancy, Honoraria, Research Funding. Davies:Amgen, Celgene, Janssen, Oncopeptides, Roche, Takeda: Membership on an entity's Board of Directors or advisory committees, Other: Consultant/Advisor; Janssen, Celgene: Other: Research Grant, Research Funding. Hungria:Janssen: 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, Speakers Bureau; Celgene: 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, Speakers Bureau; BMS: Consultancy, Honoraria, Speakers Bureau; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Amgen: 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, Speakers Bureau; BMS: Consultancy, Honoraria, Speakers Bureau; Abbvie: Consultancy, Membership on an entity's Board of Directors or advisory committees; Abbvie: Consultancy, 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, Speakers Bureau. 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. Leleu:Sanofi: Honoraria; Takeda: Honoraria; Oncopeptide: Honoraria; Karyopharm: Honoraria; Amgen: Honoraria; Carsgen: Honoraria; Incyte: Honoraria; Novartis: Honoraria; Celgene: Honoraria; Janssen: Honoraria; BMS: Honoraria; Merck: Honoraria. Puig:Takeda: Consultancy, Honoraria; The Binding Site: Honoraria; Janssen: Consultancy, Honoraria, Research Funding; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Rifkin:Takeda: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees. Terpos:Celgene: Honoraria; Takeda: Honoraria, Other: Travel expenses, Research Funding; Medison: Honoraria; Janssen: Honoraria, Other: Travel expenses, Research Funding; Amgen: Honoraria, Research Funding; Genesis: Honoraria, Other: Travel expenses, Research Funding. Usmani:Bristol-Myers Squibb: Consultancy, Research Funding; Sanofi: Patents & Royalties, Research Funding, Speakers Bureau; Janssen: Consultancy, Patents & Royalties, Research Funding, Speakers Bureau; Takeda: Consultancy, Patents & Royalties, Research Funding, Speakers Bureau; Celgene: Consultancy, Patents & Royalties, Research Funding, Speakers Bureau; Merck: Consultancy, Research Funding; Pharmacyclics: Patents & Royalties, Research Funding; Amgen: Consultancy, Patents & Royalties, Research Funding, Speakers Bureau; Array Biopharma: Patents & Royalties, Research Funding; Skyline DX: Consultancy. Weisel:Sanofi: Consultancy, Honoraria, Research Funding; Juno: Consultancy; GSK: Honoraria; Takeda: Consultancy, Honoraria; Amgen: Consultancy, Honoraria, Research Funding; Bristol-Myers Squibb: Consultancy, Honoraria; Celgene Corporation: Consultancy, Honoraria, Research Funding; Adaptive Biotech: Consultancy, Honoraria; Janssen: Consultancy, Honoraria, Research Funding. Zonder:Celgene Corporation: Consultancy, Honoraria, 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; Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees; Intellia: Consultancy, Membership on an entity's Board of Directors or advisory committees; Caelum: Consultancy, Membership on an entity's Board of Directors or advisory committees; Alnylam: Consultancy, Membership on an entity's Board of Directors or advisory committees; BMS: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees; Oncopeptides: Consultancy, Membership on an entity's Board of Directors or advisory committees. Skacel:Millennium Pharmaceuticals, Inc., subsidiary of Takeda Pharmaceutical Company Limited: Employment. Elliott:Takeda: Employment. Demers:Takeda: Employment. Stull:Takeda: Employment. Ren:Takeda: Employment. Maisnar:Janssen, Amgen, Celgene, Takeda, BMS: Consultancy, Honoraria.
Conclusion:In summary, our data confirmed the favorable prognosis of the t(14; undefined) and no IgH groups, especially in the era of novel agents. Most importantly, translocation t(14; undefined) was identified as an independent protective factor for prolonged OS in multivariate analysis. Our study further validated the short survival of patients with t(4;14)/t(14;16), who are generally classified as high-risk disease; and conversely, indicated that survival of patients with t(11;14) is decreased relative to other patients with standard-risk disease.
Background The introduction of multiple novel agents and regimens for NDMM and relapsed/refractory MM (RRMM) has improved outcomes while increasing the complexity of treatment selection and disease management. The real-world effectiveness of many novel-agent-based regimens remains to be elucidated. INSIGHT MM (NCT02761187) is the largest global, prospective, observational MM study to date. It aims to understand global NDMM/RRMM disease and pt characteristics, treatment patterns, and clinical outcomes, as well as regional variations. Here we report data for 1056 NDMM pts enrolled from July 1, 2016 to April 27, 2018. Methods INSIGHT MM is enrolling ~4200 adult pts with NDMM/RRMM (1-3 prior therapies) from 15 countries; 9 in Europe (EU), 3 in Latin America (LA), the United States (US), and 2 in Asia. Pts will be followed prospectively for ≥5 yrs. Data are collected from hospital/clinic records at baseline (MM-specific disease characteristics, prior therapies) and every 3 mos (disease management, effectiveness, safety). Results At data cut-off, 1056 NDMM pts had been enrolled from 14 countries, including 495 (47%) from EU, 361 (34%) from the US, 112 (11%) from LA, and 88 (8%) from Taiwan. Median age at enrollment was 64 (range 32-89) yrs and 139 (13%) pts were aged >75 yrs (14%/12%/11%/13% in EU/US/Taiwan/LA); 57% of pts were male (60%/58%/61%/39% in EU/US/Taiwan/LA); 72%, 13%, and 8% were White/Caucasian, Asian, and Black/African American, respectively. Overall, 62% of pts were treated at academic centers and 38% in community settings. Based on accrual at data cut-off, regional differences were observed, with more pts treated at academic centers in EU/Taiwan (88%/91%) vs the US/LA (30%/25%). 87% of pts were treated outside of clinical trials (88%/82%/95%/98% in EU/US/Taiwan/LA). Bone pain (32%, including 33%/28%/40%/37% in EU/US/Taiwan/LA), weakness/fatigue (anemia; 11%, including 12%/10%/6%/18% in EU/US/Taiwan/LA), and kidney problems (5%, including 3%/3%/17%/2% in EU/US/Taiwan/LA) were the most common reasons for pts seeking care; 32% (36%/32%/22%/24% in EU/US/Taiwan/LA) were asymptomatic at diagnosis. At diagnosis, 27%/26%/31% of pts had physician-reported ISS Stage I/II/III MM, and 88% had ECOG PS 0-1; 8% of pts had hypercalcemia, 34% creatinine clearance <60 ml/min, 56% anemia, and 30% >3 bone lesions. The most common reasons for initiating therapy were the presence of CRAB criteria, e.g. bone involvement (54%) and anemia (37%). At start of treatment, fixed-duration therapy, treat-to-best-response, and treat-to-progression approaches were planned for 38%, 29%, and 31% of pts, respectively. The most frequently administered regimens are shown in the Table; 20%/66% of pts received a doublet/triplet. V-based regimens were the most frequently used. Regional differences in regimen selection are emerging: among IMiDs, T is most commonly prescribed in EU, Taiwan, and LA; R is more common in the US. After a median follow-up of 9.3 mos, 72 (7%) pts had discontinued the study, most often due to death (57%), consent withdrawal (14%), or change of treatment provider (11%). At data cut-off, data for 236 (22%) pts who received 1st-line ASCT were available (median age 60 yrs; 12%/63%/25% of pts aged <50/50-65/>65 yrs). Of these, 64% received ASCT at academic centers; 42% of pts each in EU and the US received ASCT vs 11% in Taiwan and 4% in LA. The most frequently administered regimens in ASCT-eligible (n=429) vs ASCT-ineligible (n=571) pts were VC±d (21% vs 21%), VR±d (19% vs 17%) and VT±d (17% vs 10%). At data cut-off, 115 NDMM pts had progressed to 2nd-line therapy; 99 pts received a PI with 1st-line therapy, of whom 33 (33%) then received a PI-based regimen in 2nd line; 61 pts received an IMiD with 1st-line therapy, of whom 35 (57%) then received an IMiD-based regimen in 2nd line. Among 1st/2nd-line pts, 2%/12% received monoclonal antibody therapy. Conclusions PIs and IMiDs remain the global backbones of MM therapy, with V-based regimens most commonly used in NDMM pts, regardless of intended transplant status. These data from INSIGHT MM are beginning to elucidate regional differences in disease presentation and treatment selection, including higher numbers of pts receiving ASCT in the US/EU vs Taiwan/LA, which are likely reflective of differences in healthcare systems and access to MM treatments in the participating countries. Future studies will evaluate the impact of these regional variations on outcomes. Table. Table. Disclosures Usmani: Abbvie, Amgen, Celgene, Genmab, Merck, MundiPharma, Janssen, Seattle Genetics: Consultancy; Amgen, BMS, Celgene, Janssen, Merck, Pharmacyclics,Sanofi, Seattle Genetics, Takeda: Research Funding. Hungria:Celgene: Honoraria; Takeda: Honoraria; Janssen: Honoraria; Amgen: Honoraria. Leleu:Karyopharm: Honoraria; Incyte: Honoraria, Other: steering committee membership ; Celgene: Honoraria, Other: steering committee membership ; Janssen: Honoraria, Other; BMS: Honoraria, Other: steering committee membership ; Merk: Honoraria, Other: steering committee membership ; Takeda: Honoraria, Other: steering committee membership ; Amgen: Honoraria, Other: steering committee membership ; Sanofi: Honoraria, Other: steering committee membership steering committee membership ; Novartis: Honoraria, Other: steering committee membership ; Roche: Honoraria; Gilead: Honoraria. Lee:Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees; Adaptive Biotechnologies Corporation: Consultancy; Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees; Chugai Biopharmaceuticals: Consultancy; Takeda Oncology: Consultancy, Membership on an entity's Board of Directors or advisory committees; Kite Pharma: Consultancy, Membership on an entity's Board of Directors or advisory committees. Davies:Abbvie: Consultancy; Janssen: Consultancy, Honoraria; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees; TRM Oncology: Honoraria; ASH: Honoraria; MMRF: Honoraria. Costello:Poseida Therapeutics, Inc.: Research Funding; Takeda: Consultancy; Celgene: Consultancy. Rifkin:Takeda: Consultancy; EMD Serono: Consultancy; McKesson: Equity Ownership; Celgene: Consultancy; Amgen: Consultancy; Sandoz: Consultancy; Boehringer Ingelheim: Consultancy. Weisel:Amgen, BMS, Celgene, Janssen, and Takeda: Honoraria; Amgen, BMS, Celgene, Janssen, Juno, Sanofi, and Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees; Amgen, Celgene, Janssen, and Sanofi: Research Funding. Chari:Adaptive Biotechnology: Membership on an entity's Board of Directors or advisory committees; Celgene: Consultancy, 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; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; The Binding Site: Consultancy; Pharmacyclics: Research Funding; Seattle Genetics: Membership on an entity's Board of Directors or advisory committees; Array Biopharma: Research Funding; Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Bristol Myers Squibb: Consultancy; Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. Puig:Janssen: Consultancy, Honoraria, Research Funding; Takeda: Consultancy, Honoraria; Celgene: Honoraria, Research Funding. Boccadoro:Amgen: Honoraria, Research Funding; Celgene: Honoraria, Research Funding; Janssen: Honoraria, Research Funding; Novartis: Honoraria, Research Funding; AbbVie: Honoraria; Mundipharma: Research Funding; Bristol-Myers Squibb: Honoraria, Research Funding; Sanofi: Honoraria, Research Funding. Cook:Bristol-Myers Squibb: Consultancy, Honoraria; Glycomimetics: Consultancy, Honoraria; Sanofi: Consultancy, Honoraria, Speakers Bureau; Janssen: Consultancy, Honoraria, Research Funding, Speakers Bureau; Celgene Corporation: Consultancy, Honoraria, Research Funding, Speakers Bureau; Janssen: Consultancy, Honoraria, Research Funding, Speakers Bureau; Takeda: Consultancy, Honoraria, Research Funding, Speakers Bureau; Seattle Genetics: Honoraria; Amgen: Consultancy, Honoraria, Research Funding, Speakers Bureau. Berdeja:Teva: Research Funding; Janssen: Research Funding; Takeda: Research Funding; Amgen: Research Funding; Poseida Therapeutics, Inc.: Research Funding; Bristol-Myers Squibb: Research Funding; Celgene: Research Funding; Bluebird: Research Funding; Genentech: Research Funding; Glenmark: Research Funding; Novartis: Research Funding; Sanofi: Research Funding. Zonder:Takeda: Honoraria; Coelum: Honoraria; BMS: Research Funding; Celgene: Consultancy, Honoraria; Alnylam: Honoraria; Janssen: Honoraria; Pharmacyclics: Other: DSMC. Abonour:Prothena: Research Funding; Takeda: Consultancy, Research Funding; Celgene: Consultancy, Research Funding. Hajek:Takeda: Consultancy, Honoraria, Research Funding; Bristol-Myers Squibb: Consultancy, Honoraria, Research Funding; Janssen: Consultancy, Honoraria, Research Funding; Amgen: Consultancy, Honoraria, Research Funding; Celgene: Consultancy, Honoraria, Research Funding. Spencer:Celgene: Honoraria, Research Funding, Speakers Bureau; Janssen-Cilag: Honoraria, Research Funding, Speakers Bureau; Amgen: Honoraria, Research Funding; BMS: Research Funding; Takeda: Honoraria, Research Funding, Speakers Bureau; STA: Honoraria. Omel:Takeda Oncology: Honoraria, Membership on an entity's Board of Directors or advisory committees; Celgene Corporation: Honoraria, Membership on an entity's Board of Directors or advisory committees. Demers:Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment. Romanus:Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment. Ren:Takeda Pharmaceuticals International Co.: Employment. Skacel:Department of Hematology, Charles University General Hospital, Prague, Czech Republic: Other: Affiliation; Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment. Stull:Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment. Terpos:Novartis: Honoraria; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees; Takeda: Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel Grant, Patents & Royalties; Genesis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel Grant, Research Funding; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel Grant, Patents & Royalties; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Travel Grant, Research Funding.
was 80 mg (10 mg daily for children < = 15years). Patients with baseline uric acid level >8 mg/dl, presence of hepatic or renal dysfunction and history of receiving rasburicase were excluded. The primary objective was to compare both the drugs in terms of decrease in serum uric acid levels analysed by area under curve (AUC) for a 7-day treatment period. Results: A total of 120 patients (60 patients in each group) were recruited. Both groups were comparable in terms of gender, age, diagnosis and baseline uric acid levels. Mean AUC of serum uric acid day1-8 was 457.68 ± 27.55 mg-h/dL versus 532.32 ± 34.39 mg-h/dL, in favour of febuxostat [P = 0.09]. The difference between the two study drugs was statistically significant for febuxostat on day+3 [P < 0.05] (Figure 1).10% (n = 6) patients on allopurinol developed TLS compared to 3.33% (n = 2) patients on febuxostat. The Odds ratio for tumor lysis syndrome in patients receiving febuxostat relative to those receiving allopurinol was 0.33. Drug related adverse events were 38.33% (n = 23) in allopurinol group, in contrast to 11.66% (n = 7) in the febuxostat group. Most common adverse event in allopurinol arm was gastrointestinal, whereas in febuxostat arm, it was asymptomatic transaminitis. Cutaneous reactions (6.6%;n = 4) were noticed only in allopurinol group. Summary/Conclusion: Irrespective of type of leukemia, lactate dehydrogenase levels, leukocyte counts and baseline uric acid levels, febuxostat in comparison to allopurinol, performed non-inferior with respect to its uric acid lowering efficacy. It had relatively lesser risk of tumor lysis syndrome with a trend towards significance and a better safety profile.
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