Spk-9001: Adeno-Associated Virus Mediated Gene Transfer for Hemophilia B Achieves Sustained Mean Factor IX Activity Levels of >30% without Immunosuppression

Abstract Background: Earlier data demonstrated long-term expression of factor IX (mean FIX:C ~5.1%) following AAV8-mediated gene transfer at 2 x1012 vg/kg in hemophilia B (Nathwani et al., 2014). While the clinical improvement imparted by stable FIX levels is clear, these levels of expression fall short of trough values obtained by long-acting FIX prophylaxis (Santagostino et al. 2016), and of natural history data suggesting that levels of ~12% are required to eliminate spontaneous hemarthroses (den Uijl et al. 2011). Achieving higher levels of FIX:C with dose escalation has not been possible without eliciting a dose-dependent, capsid-specific immune response that may prevent sustained expression and efficacy (Mingozzi et al. 2007, Monahan et al. 2015). We sought to develop a highly efficient vector capsid and expression cassette that could be administered at low doses to achieve hemostatic FIX expression without need for immunosuppression. Methods: The investigational product, SPK-9001, utilizes a bioengineered AAV capsid (Spark100) with liver specific tropism. The prevalence of neutralizing antibodies (NAb) to Spark100 among sampled hemophilia B sera was 40% (Anguela et al. 2015). The expression cassette is a codon-optimized, single-stranded transgene encoding FIX Padua, a naturally occurring variant with a single amino acid substitution (R338L) that confers ~8-fold greater specific activity compared to wild-type FIX (Simioni et al. 2009). Data on bleeding and factor infusions in the year prior to enrollment were retrospectively compiled. Laboratory values, bleeding frequency, FIX consumption, changes in activity and quality-of-life via Haem-A-QoL were prospectively evaluated after vector infusion. Results: We enrolled 9 subjects, of whom 2 failed screening for liver fibrosis and 7 were infused with SPK-9001 at a dose of 5 x1011 vg/kg. Infused subjects were adult males ages 18-52 years with baseline FIX:C </=2% and Spark100 NAb titer of <1:1 or 1:1. Table 1 outlines infused subject data with a follow up interval of >2-34 weeks after vector infusion. Figure 1 outlines subject vector-derived FIX:C for the first 12 weeks. There have been no vector or procedure related adverse events. Steady-state FIX expression is reached by 12 weeks after vector infusion, resulting in a mean FIX:C of 32.3% ±6.5%. To date, no subjects required immunosuppression or demonstrated evidence of a cytotoxic immune response (characterized by loss of FIX activity, elevation of transaminase values >/=1.5-times the upper limit of normal, and positive IFN-gammaELISPOT response to capsid peptides). No subjects developed a FIX inhibitor or demonstrated ELISPOT reactivity to the FIX (R338L) gene product. Subject 3 infused with FIX concentrate for a suspected ankle bleed 2 days after vector infusion. Beyond this, no subjects required factor or experienced any bleeding events. The 4 subjects previously maintained on prophylaxis safely stopped without break-through bleeding. As of today (cumulative 724 days post vector infusion), total factor consumption was reduced by 543,589 IU, tantamount to a cumulative savings of $1,182,298 USD.Six of 7 subjects report increased physical activity and improved quality of life. Conclusion: As of 8/4/2016, we report the highest and most consistent levels of sustained vector-derived FIX:C following FIX gene transfer. Levels of FIX:C achieved by SPK-9001 permitted termination of prophylaxis, prevention of bleeding, and nearly complete cessation of factor use. Despite the heterogeneity in subjects with respect to presence and extent of hemophilic arthropathy, age, and co-morbidities, consistency of transgene expression and clinical outcomes have been observed in all participants studied to date. A vector dose of 5x1011 vg/kg is the lowest dose currently reported in hemophilia gene transfer trials; the absence of any observed CD8+ T cell immune response supports the hypothesis that lowering the dose can reduce or eliminate the risk of a capsid-specific immune response and maximize efficacy. In summary, preliminary data suggest SPK-9001 safely and consistently produces sustained elevation in FIX:C levels sufficient to prevent spontaneous hemarthroses without the need for factor consumption or immunosuppression. Disclosures Ducore: Octapharama: Membership on an entity's Board of Directors or advisory committees; LFB: Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees; Biogen: Membership on an entity's Board of Directors or advisory committees; CSL Behring: Membership on an entity's Board of Directors or advisory committees; Baxalta (Shire): Membership on an entity's Board of Directors or advisory committees; Bayer: Membership on an entity's Board of Directors or advisory committees. Cuker:Biogen-Idec: Consultancy, Research Funding; T2 Biosystems: Research Funding; Genzyme: Consultancy; Stago: Consultancy; Amgen: Consultancy. McGuinn:Spark: Research Funding; Biogen: Research Funding; Novo Nordisk: Research Funding; Baxalta: Research Funding. Luk:Spark Therapeutics, Inc.: Employment. Wright:Spark Therapeutics, Inc.: Employment, Equity Ownership, Patents & Royalties: SPK-9001. Chen:Spark Therapeutics, Inc.: Employment. Hui:Spark Therapeutics, Inc.: Employment. Wachtel:Spark Therapeutics, Inc.: Employment. Urich:Spark Therapeutics, Inc.: Employment. Takefman:Spark Therapeutics, Inc.: Employment. Couto:Spark Therapeutics, Inc.: Employment. Carr:Pfizer, Inc.: Research Funding. Anguela:Spark Therapeutics, Inc.: Employment, Patents & Royalties: SPK-9001. High:Spark Therapeutics, Inc.: Employment, Equity Ownership, Patents & Royalties: SPK-9001.

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Pharmacokinetics Of Recombinant Factor IX Fc Fusion Protein (rFIXFc) In Pediatric Subjects With Hemophilia B: An Interim Analysis Of The Kids B-LONG Study

Blood ◽

10.1182/blood.v122.21.3599.3599 ◽

2013 ◽

Vol 122 (21) ◽

pp. 3599-3599

Author(s):

Kathelijn Fischer ◽

Roshni Kulkarni ◽

Myles Bradbury ◽

Margaret V. Ragni ◽

Savita Rangarajan ◽

...

Keyword(s):

Board Of Directors ◽

Half Life ◽

Interim Analysis ◽

Research Funding ◽

Factor Ix ◽

Hemophilia B ◽

Employment Equity ◽

Advisory Committees ◽

Age Cohorts ◽

Equity Ownership

Abstract Introduction Prophylaxis with factor IX (FIX) is the optimal treatment for patients with hemophilia B; however, due to the short half-life of currently available FIX products, frequent injections may be required to prevent bleeding episodes. To prolong half-life and reduce injection frequency, a long-acting recombinant FIX Fc fusion protein (rFIXFc) consisting of one rFIX molecule covalently linked to the Fc domain of immunoglobulin G1 (IgG1) was developed. In a phase 3 study in adults and adolescents, rFIXFc had a 2.43-fold increase in half-life and 50% reduction in clearance (CL) compared with FIX (BeneFIX®) (J Thromb Haemost. 2013;11[2]:241). The Kids B-LONG study (NCT01440946) was designed to evaluate the pharmacokinetics (PK), safety, and efficacy of rFIXFc prophylaxis in previously treated pediatric subjects with hemophilia B. The objective of this planned interim analysis was to determine the PK parameters of rFIXFc in subjects enrolled in Kids B-LONG and compare these parameters to their pre-study FIX PK parameters. Methods This multicenter, open-label, phase 3 study is currently enrolling previously treated subjects aged<12 years with severe hemophilia B (≤2 IU/dL endogenous FIX), at least 50 exposure days (EDs) to FIX products, and no inhibitors to FIX. Subjects are stratified into two age cohorts (<6 and 6 to<12 years of age). A weekly prophylactic regimen of 50-60 IU/kg of rFIXFc is administered to all subjects, with subsequent dose and interval adjustments based upon PK data and bleeding frequency. Subjects will continue treatment until they achieve 50 EDs. The primary endpoint is the incidence of inhibitor formation. A sequential PK analysis is performed to compare the PK parameters of rFIXFc with that of pre-study FIX products. PK sampling of pre-study FIX occurs at baseline prior to first dose of FIX (50 IU/kg) and at 5 additional time points through 48 hours. PK sampling of rFIXFc occurs prior to first dose of 50 IU/kg rFIXFc and at 7 additional time points through 168 hours following the first dose; a washout period of 96 hours is required before the first dose of both pre-study FIX and rFIXFc. Plasma FIX activity is measured using the one-stage clotting assay calibrated against a commercially available FIX plasma standard and the FIX activity-over-time profiles are analyzed by non-compartmental analysis (NCA) using the PK data analysis software Phoenix™ WinNonlin 6.2.1.51. A data cut-off date of 23 April 2013 was used to report PK data in this interim analysis. Results At the time of this interim analysis, 24 subjects were enrolled and had received at least one dose of pre-study FIX and/or rFIXFc. Of 18 subjects with evaluable PK profiles, 15 had complete PK profiles for both pre-study FIX (BeneFIX®, Haemosolvex®, or Alphanine®) and rFIXFc. A comparison of PK parameters for rFIXFc versus FIX for both age cohorts is presented in Table 1. rFIXFc had a more than 3-fold prolongation in half-life and a more than 60% reduction in CL compared to the FIX products. Conclusion In comparison to currently available FIX products, rFIXFc had a prolonged half-life and reduced CL in pediatric subjects, which was similar to previous observations in adults and adolescents. The final analysis of the Kids B-LONG study will provide further PK information and evaluate the safety and efficacy of rFIXFc in children. Disclosures: Fischer: Biogen Idec, Baxter, Novo Nordisk, Bayer: Membership on an entity’s Board of Directors or advisory committees; Baxter, Bayer, Novo Nordisk, Pfizer: Research Funding. Kulkarni:Biogen Idec, Novo Nordisk, Baxter : Membership on an entity’s Board of Directors or advisory committees. Ragni:Biogen Idec: Membership on an entity’s Board of Directors or advisory committees; Bristol Myers Squibb, Smith Kline Glaxo, Tacere Benitec: Consultancy; Baxter, Bayer, Biogen Idec, Bristol Myers Squibb, CSL Behring, Merck, Novo Nordisk, Pfizer, Smith Kline Glaxo: Research Funding. Rangarajan:Baxter, Pfizer: Research Funding; Biogen Idec : Membership on an entity’s Board of Directors or advisory committees. Dong:Biogen Idec: Employment, Equity Ownership. Li:Biogen Idec: Employment, Equity Ownership. Jiang:Biogen Idec: Employment, Equity Ownership. Nugent:Biogen Idec: Employment, Equity Ownership. Pierce:Biogen Idec: Employment, Equity Ownership. Allen:Biogen Idec: Employment, Equity Ownership.

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Recombinant Factor IX in Surgical Management of Hemostasis in Hemophilia B Patients: A Prospective Clinical Trial

Blood ◽

10.1182/blood.v128.22.2585.2585 ◽

2016 ◽

Vol 128 (22) ◽

pp. 2585-2585

Author(s):

Jerzy Windyga ◽

Toshko Jelev Lissitchkov ◽

Vasily Mamonov ◽

Miranda Chapman ◽

Srilatha D. Tangada ◽

...

Keyword(s):

Blood Loss ◽

Board Of Directors ◽

Research Funding ◽

Factor Ix ◽

Hemophilia B ◽

Employment Equity ◽

Advisory Committees ◽

Recombinant Factor Ix ◽

Previously Treated ◽

Equity Ownership

Abstract Management of hemostasis with factor IX replacement during surgical procedures on patients with hemophilia B is vital to patient safety. A recombinant factor IX (rFIX, nonacog gamma, RIXUBIS, BAX 326) presents a treatment alternative for hemophilia B; nonacog gamma is manufactured with no materials of human or animal origin, and includes as two-step virus inactivation (solvent/detergent treatment and nanofiltration). This multi-national clinical trial was conducted to investigate the efficacy and safety of nonacog gamma for perioperative use in previously-treated patients with severe (FIX level < 1%) or moderately severe (FIX level 1-2%) hemophilia B. Interim results of 14 (11 major) surgeries showed that nonacog gamma is safe and effective in maintaining hemostasis in the surgical setting;1 the results of all 38 surgeries are presented here. Previously-treated hemophilia B immunocompetent patients aged 12 to 65 years with no evidence of a history of FIX inhibitors were eligible for participation if they were either: 1) participating in another trial with nonacog gamma and required an emergency or elective major or minor surgical, dental, or other invasive procedure; or 2) if not participating in any other nonacog gamma clinical study, they required elective major surgery and had been treated previously with plasma-derived and/or recombinant FIX concentrate(s) for a minimum of 150 exposure days. Pre-operative FIX levels were targeted at 80%-100% of normal for major, and 30%-60% of normal for minor surgeries, through an individualized nonacog gamma dosing approach. Hemostatic efficacy was evaluated intra- and post-operatively by determination of actual versus predicted blood loss and a semi-quantitative 4-point hemostatic efficacy rating scale (excellent, good, fair, none); safety was assessed in terms of the occurrence of adverse events. Thirty patients participated in this study, 10 of whom underwent multiple surgeries and were re-enrolled for each surgery. Of a total of 38 surgeries performed, 21 were major (14 orthopedic) and 17 were minor. Hemostatic efficacy for 37/38 surgeries (including 20/21 major surgeries) had a rating of 'excellent' and one was 'good' (a knee joint replacement). At drain removal (n=14), the ratings for all major surgeries were either 'excellent' (10/14) or 'good' (4/14). On postoperative day 3, 6 of 7 major surgeries where no drain was employed had a rating of 'excellent', and one had a rating of 'good'. At discharge from hospital, 12/21 were 'excellent', 7/21 were 'good' and 2 were 'fair' (both had ratings of 'excellent' intraoperatively and at drain removal). For 16/21 major surgeries, the actual blood loss was below (n=8) or equal to (n=8) the average predicted blood loss and the mean post-operative blood loss was 552.4 mL (range: 11-1100 mL) in subjects who had a drain placed. For 12/17 minor surgeries, actual intraoperative blood loss was below the average predicted blood loss, for 4/17 minor surgeries, the actual intraoperative blood loss matched the average predicted blood loss, and for 1 minor surgery (intra-articular infiltration) actual blood loss was between the average predicted and maximum predicted blood loss. Nonacog gamma was safe and well tolerated. One possibly related AE (hemorrhagic anemia) was reported. This event was resolved at the completion of the study. No thrombogenic events or severe allergic reactions, nor induction of inhibitory antibodies to FIX or total binding antibodies to FIX were observed. Conclusion: Nonacog gamma provides a safe and effective treatment alternative for perioperative management of hemostasis in hemophilia B patients in a variety of surgical settings. References 1 Windyga J, Lissitchkov T, Stasyshyn O, et al. Efficacy and safety of a recombinant factor IX (Bax326) in previously treated patients with severe or moderately severe haemophilia B undergoing surgical or other invasive procedures: a prospective, open-label, uncontrolled, multicentre, phase III study. Haemophilia. 2014 Sep;20(5):651-8. Disclosures Windyga: CSL Behring: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Biogen: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Nordisk: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Aspen: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Sanofi: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Baxalta, now part of Shire: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Investigator Clinical Studies, Patents & Royalties, Research Funding, Speakers Bureau; Octapharma: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Alexion: Other: Speaker's honorarium. Mamonov:Baxalta (Now part of Shire): Research Funding. Chapman:Baxalta (Now part of Shire): Employment, Equity Ownership. Tangada:Baxalta US Inc., now part of Shire: Employment, Equity Ownership. Abbuehl:Shire, formerly Baxalta and Baxter: Employment, Equity Ownership.

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IPH4102; An Anti-KIR3DL2 Monoclonal Antibody in Refractory Sezary Syndrome: Results from a Multicenter Phase 1 Trial

Blood ◽

10.1182/blood-2018-99-118021 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 684-684 ◽

Cited By ~ 1

Author(s):

Martine Bagot ◽

Pierluigi Porcu ◽

Basem M. William ◽

Maxime Battistella ◽

Maarten Vermeer ◽

...

Keyword(s):

Quality Of Life ◽

Monoclonal Antibody ◽

Board Of Directors ◽

Research Funding ◽

Phase 1 ◽

Employment Equity ◽

Advisory Committees ◽

Multicenter Phase ◽

Equity Ownership

Abstract Aims: Sezary Syndrome (SS) is the most aggressive form of cutaneous T cell lymphoma (CTCL), characterized with high blood involvement and expression of Killer cell immunoglobulin like receptor 3DL2 (KIR3DL2). IPH4102 is a first-in-class monoclonal antibody that targets KIR3DL2. Very limited effective treatment options are available for SS patients with refractory disease. We conducted a phase 1 study testing IPH4102 in patients with refractory CTCL. Here we report results from the SS subset. Methods: IPH4102-101 study is a multicenter phase I trial composed of a dose escalation and cohort expansion portions that evaluated IPH4102 in patients with refractory CTCL. Key eligibility criteria included failure of ≥ 2 prior systemic therapies. KIR3DL2 testing was performed for all patients at baseline and at different time points throughout the study. IPH4102 was given Q1w x 4 weeks, followed by Q2w x 10 weeks then Q4w until disease progression or unacceptable toxicity. Primary endpoint is safety. Main 2ry endpoints include best global response (BGR) using the Olsen criteria, progression-free survival (PFS), duration of response (DOR), quality of life (QOL) and biomarker analyses. Results: The study included 35 SS patients, 20 in the dose escalation and 15 in the cohort expansion, with a median age of 70 years (37-90). Median time from initial SS diagnosis to starting IPH4012 was 22.8 months. Nineteen patients (54%) received IPH4102 as ≥ 4th line of systemic therapy and 7 (20%) were previously treated with mogamulizumab. Thirteen patients (37%) had lymph node involvement as per investigator assessment and based on radiological examination while 7 patients (20%) had evidence of large cell transformation. KIR3DL2 expression was observed in either skin or blood in 33 patients (94%) and in both in 28 patients (80%). Most common adverse events (AEs) were asthenia (26%), peripheral edema (26%), and fatigue (23%), which were all grade 1-2. Possibly related grade ≥ 3 AEs were observed in 7 patients (20%), and only 2 patients (6%) stopped treatment for an AE. Table 1 shows BGR and response by compartment. Overall response rate was 42.9% [95% CI: 28.0% - 59.1%], with median time to response of 4.8 months. Median DOR and PFS were 5.6 months [95% CI: 3.2-not reached] and 12.8 months [95% CI: 8.1-not reached], respectively. Mogamulizumab pretreated patients showed BGR, median DOR and PFS of 42.9%, 13.8 and 20.9 months, respectively. Quality of life assessment was performed using the Pruritus VAS score andSkinDex29. Patients with CR, PR or SD showed marked improvement overtime of all evaluated parameters including SkinDex29 global, symptoms, emotional, and functional scores. Biomarker analysis showed progressive decrease in CD4/CD8 ratio in responding patients. The decrease of KIR3DL2+ expressing cells in skin evaluated by immunohistochemistry at week 5 and 14 was able to predict BGR (AUC=0.749, 0.714, respectively). Figure 1 shows reduction in KIR3DL2 expressing cells at week 5 and week 14 in a patient who had PR as BGR. To date, 9 patients are still ongoing treatment. Updated clinical and correlative research analyses will be presented at the meeting. Conclusions: IPH4102 is highly effective in patients with refractory SS. It induces meaningful clinical activity and improves quality of life placing it as an encouraging treatment option for these patients. Further development in SS and other T-cell malignancies is underway. Disclosures Bagot: Actelion: Membership on an entity's Board of Directors or advisory committees; Innate Pharma: Consultancy, Equity Ownership, Membership on an entity's Board of Directors or advisory committees; Takeda: Membership on an entity's Board of Directors or advisory committees; Kyowa Kirin: Membership on an entity's Board of Directors or advisory committees. Porcu:Innate Pharma: Consultancy. Khodadoust:Innate Pharma: Research Funding. Sicard:Innate Pharma: Employment, Equity Ownership. Azim:Innate Pharma: Employment, Equity Ownership. Kim:miRagen: Research Funding; Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Horizon Pharma: Consultancy, Research Funding; Galderma: Research Funding; Tetralogic: Research Funding; Neumedicine: Consultancy, Research Funding; Soligenix: Research Funding; Portola: Research Funding; Forty Seven Inc: Research Funding; Seattle Genetics: Membership on an entity's Board of Directors or advisory committees; Merck: Research Funding; Medivir: Membership on an entity's Board of Directors or advisory committees; Kyowa-Kirin-Pharma: Membership on an entity's Board of Directors or advisory committees, Research Funding; Innate Pharma: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Eisai: Membership on an entity's Board of Directors or advisory committees, Research Funding.

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Venetoclax Improves Quality of Life for Patients with Elapsed/Refractory Chronic Lymphocytic Leukemia

Blood ◽

10.1182/blood-2018-99-117127 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 4858-4858 ◽

Cited By ~ 1

Author(s):

Tara Cochrane ◽

Tatiana Chagorova ◽

Tadeusz Robak ◽

Su-Peng Yeh ◽

Evgeny Nikitin ◽

...

Keyword(s):

Quality Of Life ◽

Board Of Directors ◽

Research Funding ◽

Lymphocytic Leukemia ◽

Employment Equity ◽

Advisory Committees ◽

Equity Ownership ◽

Eortc Qlq ◽

The Impact

Abstract INTRODUCTION: Patients with chronic lymphocytic leukemia (CLL) have significantly decreased health related quality of life (HRQoL), particularly related to severe and progressive fatigue. Side effects of chemotherapies and the emotional burden of living with an often poor prognosis disease also negatively impact patient HRQoL. Venetoclax, an oral agent that targets the anti-apoptotic protein BCL2, has demonstrated high rates of deep and durable response in patients with relapsed/refractory (R/R) CLL, including those with 17p deletions, and has been shown to facilitate clinically relevant improvement in several key aspects of functioning and HRQoL. We evaluated the impact of venetoclax monotherapy on the quality of life of patients with R/R CLL. METHODS: VENICE II is an ongoing open-label, phase 3b, multicenter study (NCT02980731) that assessed patient-reported HRQoL in patients who were ≥18 years old with R/R CLL, including those with 17p deletion, TP53 mutations, and/or prior experience with B-cell receptor pathway inhibitor-containing (BCRi) therapy, treated with venetoclax monotherapy (5-week dose-titration, starting at 20mg once daily, then increased weekly to 50 mg, 100 mg, 200 mg, and 400 mg, followed by 400mg once daily). The primary endpoint was the mean change from baseline to Week 48 in the European Organization for Research and Treatment of Cancer Quality of Life Core Questionnaire (EORTC QLQ-C30) subscale. HRQoL subscales analyzed included: Global Health Status, Role Functioning, Emotional Functioning, Cognitive Functioning, Social Functioning, and Fatigue. The impact on QoL was also assessed on the CLL Module (EORTC QLQ-CLL16). Relevance of mean changes in HRQoL measures from baseline were analyzed based on minimum important difference (MID); a 5-10 point change was defined as MID, and >10 points was considered clinically meaningful.(Osoba, D., et al. J Clin Oncol. 1998;16:139-44. Osoba, D., et al. Qual Life Res. 1994;3:353-64.) Safety and adverse events (AEs) were also monitored. RESULTS: As of the data cutoff, April 30, 2018, the median time on study was 28 weeks (range: 1 - 73) and the median time on therapy was 23 weeks (range: 0.1 - 69) in this ongoing study. Of the 169 treated patients, 70% were male; the median age was 65 years (range: 24 - 86). Among those with available data, 17p deletions and TP53 mutations were confirmed in 34% (41/122) and 38% (19/50) of patients, respectively. Overall, 38%, 20%, and 42% of patients had one, two, and three (or more) prior lines of therapy respectively; 21% of patients had prior BCRi therapy. Clinically meaningful improvements from baseline were observed by week 12 and were sustained through week 48 in the EORTC-QLQ-C30 global health status and the role function, social function, and fatigue subscales (Table and Figure 1A) and EORTC-QLQ-CLL16 future health and disease effect subscales (Table and Figure 1B). Eighty-two percent of patients had at least 1 AE; most commonly observed AEs (≥10% of patients) were neutropenia (35%), diarrhea (17%), thrombocytopenia (15%), anemia (12%), nausea (12%), and upper respiratory infection (11%). Twenty-eight percent of patients had a serious AE, of which the most common were pneumonia (5%), febrile neutropenia (4%) and pyrexia (3%). Five percent of patients discontinued the study due to an AE. CONCLUSIONS: Preliminary data from this ongoing study suggest that patients with R/R CLL experienced improvement in several key aspects of functioning and quality of life with venetoclax monotherapy within the first 12 weeks which is sustained over time. Venetoclax monotherapy was well tolerated in R/R CLL patients. These findings are consistent with previous studies of R/R CLL patients who received venetoclax monotherapy. Disclosures Cochrane: Janssen: Membership on an entity's Board of Directors or advisory committees; Cilag: Membership on an entity's Board of Directors or advisory committees; Takeda: Honoraria; Bristol-Myers Squibb: Honoraria; Calgene: Honoraria; Amgen: Honoraria; Novartis: Honoraria; MSD: Honoraria. Robak:AbbVie, Inc: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Roche: Consultancy, Honoraria; Janssen: Consultancy, Honoraria; Gilead: Consultancy. Yeh:GNT Biotech & Medicals Crop.: Research Funding. Nikitin:AbbVie, Inc: Speakers Bureau. Breuleux:Roche: Employment, Equity Ownership; Gilead: Equity Ownership; Basilea: Patents & Royalties; Novartis: Patents & Royalties. Masud:AbbVie, Inc: Employment, Equity Ownership. Sail:AbbVie, Inc: Employment, Equity Ownership. Komlosi:AbbVie, Inc: Employment, Equity Ownership. Anderson:Walter and Eliza Hall: Employment, Patents & Royalties; AbbVie, Inc: Research Funding; Genentech: Research Funding.

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Ahead Study: A 3 Year Follow-up of 522 Severe and Moderate Hemophilia a Patients

Blood ◽

10.1182/blood.v128.22.3786.3786 ◽

2016 ◽

Vol 128 (22) ◽

pp. 3786-3786

Author(s):

Johannes Oldenburg ◽

Dimitrios Tsakiris ◽

Cedric R. Hermans ◽

RI Liesner ◽

Kate Khair ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Hemophilia A ◽

Employment Equity ◽

Advisory Committees ◽

Prophylaxis Group ◽

Equity Ownership

Abstract Introduction: Long-term, real-world data on natural history of hemophilia A patients, safety and treatment outcome are still insufficient, particularly as far as the impact of bleeding on patient lives is concerned, as most of clinical trials and PASS studies are limited in study population size and length of follow-up, often no longer than 12 months. Methods: The AHEAD study is a non-interventional, prospective long-term cohort study including severe and moderate hemophilia A patients treated with ADVATE. Study endpoints include long-term joint health outcomes, annualized (joint) bleeding rates (ABR/AJBR), factor consumption, quality of life and safety data. Globally, AHEAD aims to evaluate data on approximately 1,000 patients, with a maximum follow-up period of up to 8 years. This interim data report includes 3 years of follow-up after study start. Results: The interim data report includes 522 patients from 21 countries (German study arm is not included in this analysis), for overall 1160 patient years. Of these, 334 completed year 1, 238 year 2 and 136 year 3 study visits. Median age at screening was 17 years (min-max: 0 - 78) and 57% of patients had severe HA (FVIII<1%); 78% were on prophylaxis, 21% were on demand (OD) and 1% on ITI treatment. The median ABRs in year 1, 2 and 3 were 1.2/1.2/1.9 respectively in patients on prophylaxis and 8.4/10.0/7.2, respectively in patients on OD. Median AJBRs were 0.9/0.9/1.0 in the prophylaxis group and 6.4/5.5/5.9 for patients on OD in the first three years of observation. Very similar data were reported taking only severe hemophilia A patients on prophylaxis into account (ABR: 1.9/1.7/2.5 and AJBR: 1.0/1.0/1.1) Overall, 56% of patients on prophylaxis and 32% of patients OD had an AJBR <1 in the first year, 54% and 33% in the second year and 52% and 22% in the third year. In the OD group about half of the patients had an AJBR ≥ 6, in the 3 years of follow up, while only 10% of patients in the prophylaxis group. Median annualized total dose in the prophylaxis group was consistently approximately 245,000IU while the FVIII consumption in the OD group was ranging from 26,000 to 47,000. Effectiveness of prophylaxis assessed by investigators was excellent/good in 93-96% of cases in the three years of observation. Functionality assessment using the hemophilia activity level (HAL) questionnaire showed a median summary score of 77.3-86.7 for patients on prophylaxis and 67.9-71.3 in patients OD over the 3 year follow up period. Differences of health related quality of life (HRQoL) as assessed by the SF-12 were found in the domain physical functioning (median score of 75-100 vs. 50-75 in patients on prophylaxis and OD, respectively) and role physical (median scores of 75 vs. 62.5-75 in patients on prophylaxis and OD, respectively). There were 7 treatment-related adverse events (AEs): 6 serious AEs (5 transient low titer inhibitors and 1 transient high titer inhibitor). The remaining non serious treatment-related adverse event was a mild allergic cutaneous reaction with rhinitis. All patients continued to receive ADVATE. Conclusion: Interim read-out of 3 year follow-up of patients enrolled in the AHEAD study show a clinically meaningful difference in ABR/AJBR, HAL, HRQoL of patients on prophylaxis or OD treatment. This study represents the largest cohort of hemophilia patients with the longest follow-up period. Disclosures Tsakiris: Baxalta, now part of Shire: Consultancy, Honoraria, Research Funding; Bayer Switzerland GmbH: Consultancy, Honoraria, Research Funding. Hermans:Baxalta, now part of Shire: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Investigator Clinical Studies. Liesner:Baxalta, now part of Shire: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Bayer: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Octapharma: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Sobi: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; BPL: Research Funding; Cangene: Research Funding; CSL Behring: Membership on an entity's Board of Directors or advisory committees. Khair:Pfizer: Research Funding; NovoNordisk: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Baxalta, now part of Shire: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Study Investigator, Research Funding; Octapharma: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Study Investigator, Patents & Royalties, Research Funding, Speakers Bureau; Sobi/Biogen: Research Funding. Mazzucconi:Baxalta, now part of Shire: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Bayer: Speakers Bureau; NovoNordisk: Speakers Bureau; Pfizer: Speakers Bureau; Roche: Membership on an entity's Board of Directors or advisory committees; Amgen: Speakers Bureau; Novartis: Speakers Bureau; Shire: Speakers Bureau. Steinitz-Trost:Baxalta, now part of Shire: Employment. Spotts:Shire: Employment. Reininger:Baxalta, now part of Shire: Employment, Equity Ownership. Gringeri:Shire: Employment, Equity Ownership.

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Pharmacokinetic Profile of Nonacog Gamma (recombinant factor IX) in Previously-Treated Patients with Severe or Moderately Severe Hemophilia B

Blood ◽

10.1182/blood.v128.22.4978.4978 ◽

2016 ◽

Vol 128 (22) ◽

pp. 4978-4978

Author(s):

Jerzy Windyga ◽

Toshko Jelev Lissitchkov ◽

Miranda Chapman ◽

Srilatha D. Tangada ◽

Nirjhar Chatterjee

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Factor Ix ◽

Hemophilia B ◽

Pivotal Trial ◽

Advisory Committees ◽

Recombinant Factor Ix ◽

Previously Treated Patients ◽

Previously Treated ◽

Equity Ownership

Abstract Pharmacokinetic (PK) parameters are important surrogate indicators for hemostatic efficacy replacement therapy in the treatment of haemophilia patients. Nonacog gamma (Rixubis) is a recombinant factor IX (rFIX) concentrate that is manufactured using two viral inactivation steps (solvent/detergent treatment and nanofiltration) and without any materials of animal origin. Clinical trials of nonacog gamma included a comprehensive evaluation of PK in hemophilia B patients across multiple age groups and a direct comparison to determine equivalence with another licensed, commercially-available factor IX product. The objective of this evaluation was to assess the factor IX activity across clinical development with nonacog gamma. PK parameters for nonacog gamma were evaluated in a non-bleeding state in previously-treated patients with severe (FIX level < 1%) or moderately severe (FIX level 1-2%) hemophilia B in three prospective clinical trials (a pivotal trial in adults,1 a pediatric trial in children aged 2 to 12 years,2 and a third trial in patients undergoing surgical procedures3). Factor IX activity was determined using a one-stage clotting assay. In the pivotal trial, PK equivalence with a comparator recombinant factor IX product (nonacog alfa) was determined by the ratio of AUC0-72 h (area under the plasma concentration versus time curve from 0 to 72 hours post-infusion), per dose with a type I error of 5% for the two-sided 90% confidence interval (equivalence margin: 80% to 125%). Windyga et al. (2014) established bioequivalence of nonacog gamma with a comparator recombinant factor IX in the pivotal trial (N=27), as the 90% CI for the ratio of the AUC0-72 h per dose ranged from 103% to 109%.1 A plot of mean factor IX activity levels versus time after start of infusion on a linear scale and log scale (figure 1a and 1b) depicts the equivalence throughout the 72-hour follow-up period. A similar pattern can be observed in the linear and log regression for mean factor IX activity in pediatric patients (N=23). These results are further supported by consistent PK parameters determined prior to surgical intervention in the surgery trial (N=12).3 Two important PK parameters determined in each study were as follows: mean [STD] T ½ 26.70h (9.55), incremental recovery (IR) 0.87 (0.22) for nonacog gamma and 27.87h (9.22), IR 0.76 (0.20) for the comparator rFIX in the pivotal trial, 25.31h (3.130), IR 0.67 (0.16) in the pediatric trial, and 23.60h (3.60), IR 1.06 (0.35) in the surgery trial. Conclusion Factor IX activity of nonacog gamma throughout its clinical development support previous finding of its equivalence with another licensed recombinant factor IX concentrate in patients with severe to moderately severe hemophilia B. References 1. Windyga J, Lissitchkov T, Stasyshyn O, et al. Pharmacokinetics, efficacy and safety of BAX326, a novel recombinant factor IX: a prospective, controlled, multicentre phase I/III study in previously treated patients with severe (FIX level <1%) or moderately severe (FIX level ≤2%) haemophilia B. Haemophilia. 2014 Jan;20(1):15-24. 2. Urasinski T, Stasyshyn O, Andreeva T, et al. Recombinant factor IX (BAX326) in previously treated paediatric patients with haemophilia B: a prospective clinical trial. Haemophilia. 2015 Mar;21(2):196-203. 3. Windyga J, Lissitchkov T, Stasyshyn O, et al. Efficacy and safety of a recombinant factor IX (Bax326) in previously treated patients with severe or moderately severe haemophilia B undergoing surgical or other invasive procedures: a prospective, open-label, uncontrolled, multicentre, phase III study. Haemophilia. 2014 Sep;20(5):651-8. Disclosures Windyga: Baxalta, now part of Shire: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: Investigator Clinical Studies, Patents & Royalties, Research Funding, Speakers Bureau; Nordisk: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Sanofi: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Biogen: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; CSL Behring: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Octapharma: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau; Alexion: Other: Speaker's honorarium; Aspen: Consultancy, Equity Ownership, Honoraria, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding, Speakers Bureau. Chapman:Baxalta (Now part of Shire): Employment, Equity Ownership. Tangada:Baxalta US Inc., now part of Shire: Employment, Equity Ownership. Chatterjee:Baxalta (Now part of Shire): Employment, Equity Ownership.

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Effect of Ruxolitinib On the Incidence of Splenectomy in Patients with Myelofibrosis: A Retrospective Analysis of Data From Ruxolitinib Clinical Trials.

Blood ◽

10.1182/blood.v120.21.2847.2847 ◽

2012 ◽

Vol 120 (21) ◽

pp. 2847-2847

Author(s):

Srdan Verstovsek ◽

Jean-Jacques Kiladjian ◽

Ruben A. Mesa ◽

Alessandro M. Vannucchi ◽

Jason Gotlib ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Phase Iii ◽

Employment Equity ◽

Massive Splenomegaly ◽

Advisory Committees ◽

Equity Ownership ◽

Phase Iii Studies

Abstract Abstract 2847 Background and Purpose: Myelofibrosis (MF) is a progressive Philadelphia-negative myeloproliferative neoplasm characterized by debilitating symptoms, massive splenomegaly, and anemia, which severely impairs quality of life. When medical therapy is not effective or tolerated, splenectomy may be required to ease symptoms in patients with symptomatic portal hypertension, massive splenomegaly, and/or frequent red blood cell transfusions (Barbui et al. J Clin Oncol. 2011;29:761–770). In a recent study (Tefferi et al. Mayo Clin Proc. 2012;87:25–33) up to 27% of patients diagnosed with MF eventually underwent splenectomy. However, splenectomy is associated with limited duration of symptom response, high rates of perioperative morbidity and mortality, and acceleration of hepatomegaly. Clinical studies in patients with MF have demonstrated that ruxolitinib, an oral JAK1/JAK2 inhibitor, provides significant and durable reductions in splenomegaly, the burden of MF-associated symptoms, and also improved quality of life. In this post hoc analysis of pooled data from these studies, we determined the incidence of splenectomy in patients treated with ruxolitinib and those who received placebo or best available therapy (BAT) to evaluate whether ruxolitinib therapy may affect the need for splenectomy. Methods: This analysis included patients who participated in the ruxolitinib phase I/II trial (N=153; Verstovsek et al. N Engl J Med. 2010;363:1117–1127); COMFORT-I, a phase III, 24-month placebo-controlled trial of ruxolitinib (N=309; Verstovsek et al. N Engl J Med. 2012;366:799–807); and COMFORT-II, a phase III, 48-month randomized trial comparing the effects of ruxolitinib and BAT (N=219; Harrison et al. N Engl J Med. 2012;366:787–798). Incidence of splenectomy while on treatment or during the protocol-specified follow-up period, adjusted for differences in the duration of follow up, was calculated for patients on ruxolitinib, placebo, or BAT. Results: As a result of the crossover rules and a higher discontinuation rate on the comparator arms in the phase III studies, mean follow-up duration for placebo (0.67 years) or BAT (0.95 years) overall was substantially shorter than mean follow-up duration for ruxolitinib (1.78 years). Baseline characteristics of the 14 patients who underwent splenectomy were as follows: median age=63 years; median time since initial diagnosis=7.8 years; median spleen length (n=13): 17.0 cm (range: 0–28.0 cm); median spleen volume (in those with measurement, n=11)=2924 cm3 (range: 1203–6807 cm3); IPSS high risk=50%, intermediate-2 risk=43%, intermediate-1=7%. Among patients originally randomized and treated with ruxolitinib, the incidence of splenectomy was 1.1 events per 100 patient years (Table). For patients treated with placebo or BAT in the phase III studies, the incidence of splenectomy was approximately three times higher at 2.9 events per 100 patient years, despite the fact that patients on placebo or BAT were allowed to crossover to ruxolitinib if they had worsening symptomatic splenomegaly. Conclusions: Although limited by small numbers, results of this analysis suggest that ruxolitinib reduces the need for splenectomy in patients with MF. Because of crossover to ruxolitinib and higher discontinuation rates in placebo and BAT, follow-up duration was shorter in these treatment arms compared with ruxolitinib. Further, ruxolitinib treatment in crossover patients may have prevented progression of symptomatic splenomegaly in some patients who may have otherwise become candidates for splenectomy. Our analysis may underestimate the true incidence of splenectomy among patients not receiving ruxolitinib therapy and therefore, the relative reduction in splenectomy rate in patients receiving this therapy. Longer-term follow up will better define the splenectomy rate in ruxolitinib-treated patients. Disclosures: Verstovsek: Incyte Corporation: Research Funding. Kiladjian:Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding; Shire: Membership on an entity's Board of Directors or advisory committees; Incyte: Membership on an entity's Board of Directors or advisory committees; Celgene: Research Funding. Mesa:Incyte: Research Funding; Lilly: Research Funding; Sanofi: Research Funding; NS Pharma: Research Funding; YM Bioscience: Research Funding. Vannucchi:Novartis: Membership on an entity's Board of Directors or advisory committees. Gotlib:Incyte Corporation: Consultancy, Honoraria, Support for travel to meeting for the study or other purposes from Incyte Other. Kantarjian:Incyte: grant support Other. Sirulnik:Novartis: Employment, Equity Ownership. Peng:Incyte Corporation: Employment, Equity Ownership. Sandor:Incyte Corporation: An employee of Incyte and receiving stock options as part of his compensation Other, Employment. Harrison:Novartis: Honoraria, Research Funding, Speakers Bureau; YM Bioscience: Consultancy, Honoraria; Sanofi Aventis: Honoraria; Shire: Honoraria, Research Funding.

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Health-Related Quality of Life Among Patients with Relapsed or Refractory Multiple Myeloma Who Received Pomalidomide, Bortezomib, and Low-Dose Dexamethasone Versus Bortezomib and Low-Dose Dexamethasone - Results from the Phase 3 Optimismm Study

Blood ◽

10.1182/blood-2018-99-112155 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 1960-1960 ◽

Cited By ~ 1

Author(s):

Katja Weisel ◽

Meletios A Dimopoulos ◽

Philippe Moreau ◽

Munci Yagci ◽

Alessandra Larocca ◽

...

Keyword(s):

Quality Of Life ◽

Board Of Directors ◽

Research Funding ◽

Low Dose ◽

Employment Equity ◽

Phase 3 ◽

Advisory Committees ◽

Treatment Groups ◽

Equity Ownership

Abstract Introduction : A diagnosis of multiple myeloma (MM) has a substantial impact on health-related quality of life (HRQoL) due to associated symptoms, such as bone pain, infection, and fatigue. Furthermore, HRQoL deteriorates with each subsequent line of therapy. The phase 3 OPTIMISMM study (NCT01734928) demonstrated that pomalidomide, bortezomib, and low-dose dexamethasone (PVd) resulted in a significantly longer progression-free survival (PFS) and greater overall response rate (ORR) compared with bortezomib and low-dose dexamethasone (Vd) in patients with relapsed or refractory multiple myeloma (RRMM), all of whom had received prior treatment with lenalidomide. Given that HRQoL in RRMM is an important consideration, we conducted this analysis to evaluate the effect of PVd versus Vd on HRQoL in patients enrolled in the OPTIMISMM study. Methods : The OPTIMISMM study was a phase 3, multicenter, randomized, open-label study that enrolled adult RRMM patients who had received 1 to 3 prior anti-myeloma regimens including lenalidomide. Patients (N=559) were randomly assigned to receive PVd (n=281) or Vd (n=278) per 21-day treatment cycle until progression or treatment discontinuation. HRQoL was assessed as an exploratory endpoint using the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Core 30 (QLQ-C30) questionnaire at Day 1 of each 21-day cycle prior to treatment administration and at the end of treatment. The primary domain of interest was the Global Health Status/QoL domain of the QLQ-C30. Analyses were performed in the HRQoL-evaluable population, which included randomized patients who completed the QLQ-C30 assessment at baseline and at least one post-baseline visit. Key primary analyses of PVd versus Vd on the global QoL domain of the QLQ-C30 included a longitudinal assessment of change from baseline using a mixed-model repeated measure (MMRM) approach; an assessment of the proportion of patients experiencing clinically meaningful deterioration (i.e., ≥10 points worsening from baseline) at pre-selected post-baseline visits; and an analysis of time to first clinically meaningful deterioration. Results : The HRQoL-evaluable population consisted of 240 patients in the PVd group and 209 in the Vd group; baseline characteristics were well-balanced between the treatment groups. HRQoL compliance rates based on the number of patients expected to complete the QLQ-C30 at each given visit exceeded 80% for most visits among both groups. Mean (SD) baseline scores for the global QoL domain of the QLQ-C30 were similar between groups (61.0 [23.2] in the PVd group and 63.5 [21.3] in the Vd group); these scores were maintained over time for both treatment groups, with no clinically meaningful differences observed between the treatment groups at any cycle (Figure 1). The MMRM analyses showed no clinically meaningful difference in global QoL of patients between the PVd group and the Vd group. There was also no significant difference observed in the proportion of patients who experienced clinically meaningful worsening in the global QoL domain between the treatment groups throughout the pre-selected post-baseline visits. The median time to the first clinically meaningful worsening was also similar between treatment groups: 3.0 months for the PVd group and 3.4 months for the Vd group, respectively (hazard ratio: 1.20; 95% confidence interval: 0.9456, 1.5151; p=0.1351; Figure 2 for when death was considered as an event); similar results were observed when death was censored. Conclusions: The results from this analysis of the OPTIMISMM study showed that the triplet regimen of PVd, which consisted of pomalidomide added to the doublet regimen of Vd, did not compromise HRQoL in lenalidomide-treated patients with RRMM. Overall, there were no clinically meaningful differences in the Global Health Status/QoL domain of the QLQ-C30 between treatment groups. These results are meaningful and provide further evidence of the clinical benefits of the addition of pomalidomide to Vd, which include significant improvements in PFS and ORR. Disclosures Weisel: 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; Amgen, BMS, Celgene, Janssen, and Takeda: Honoraria. Dimopoulos:Takeda: Honoraria; Bristol-Myers Squibb: Honoraria; Amgen: Honoraria; Janssen: Honoraria; Celgene: Honoraria. Moreau:Amgen: 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; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Abbvie: Honoraria, Membership on an entity's Board of Directors or advisory committees. Larocca:Amgen: Honoraria; Bristol-Myers Squibb: Honoraria; Celgene: Honoraria; Janssen-Cilag: Honoraria. Rodriguez Otero:Clínica Universidad de Navarra: Employment; Takeda: Consultancy; Bristol Myers Squibb: Research Funding; Celgene: Consultancy, Honoraria, Research Funding; Janssen: Consultancy, Honoraria. Anttila:Janssen: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees. Hayden:Celgene: Honoraria; Jassen: Honoraria; Amgen: Honoraria. Krauth:Celgene: Consultancy, Honoraria; BMS: Consultancy, Honoraria; Novartis: Consultancy, Honoraria; Janssen: Consultancy, Honoraria; Takeda: Consultancy, Honoraria; Amgen: Consultancy, Honoraria. Guo:Celgene Corporation: Consultancy. Purnomo:Celgene: Employment. Yu:Celgene: Employment, Equity Ownership. Grote:Celgene: Employment. Biyukov:Celgene Corporation: Employment, Equity Ownership. Zaki:Celgene Corporation: Employment, Equity Ownership. Richardson:Karyopharm: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Research Funding; Amgen: Membership on an entity's Board of Directors or advisory committees; Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Oncopeptides: Membership on an entity's Board of Directors or advisory committees; Jazz Pharmaceuticals: Membership on an entity's Board of Directors or advisory committees, Research Funding; Janssen: Membership on an entity's Board of Directors or advisory committees.

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Clinical Outcomes in Children with Hemophilia B Treated Long Term with rFIXFc: Interim Results of the B-YOND Extension Study

Blood ◽

10.1182/blood.v126.23.1093.1093 ◽

2015 ◽

Vol 126 (23) ◽

pp. 1093-1093

Author(s):

Roshni Kulkarni ◽

Beatrice Nolan ◽

Carolyn M. Bennett ◽

Kathelijn Fischer ◽

David J Perry ◽

...

Keyword(s):

Board Of Directors ◽

Research Funding ◽

Hemophilia B ◽

Employment Equity ◽

Advisory Committees ◽

Dosing Interval ◽

Treatment Groups ◽

Prophylactic Dose ◽

Age Cohort ◽

Equity Ownership

Abstract Background: Early prophylactic replacement of coagulation factor IX (FIX) improves clinical outcomes in children with hemophilia B; however, frequent intravenous infusions (2-3 times/week) are often required due to the short half-life of conventional FIX products. Recombinant FIX Fc fusion protein (rFIXFc), which is produced in a human cell line, binds the neonatal Fc receptor and utilizes the natural IgG recycling pathway to prolong the half-life of FIX.The phase 3 Kids B-LONG study (NCT01425723) demonstrated the safety, efficacy and prolonged half-life of once weekly recombinant factor IX Fc fusion protein (rFIXFc) in children aged <12 years with hemophilia B (endogenous FIX ≤2 IU/dL). Here, we report interim safety and efficacy data for children enrolled in the ongoing rFIXFc extension study, B-YOND (NCT01425723). Methods: Upon completing Kids B-LONG, eligible subjects could participate in one of 3 treatment groups in B-YOND: weekly prophylaxis (WP; 20-100 IU/kg every 7 days), individualized prophylaxis (IP; 100 IU/kg every 8-16 days), or modified prophylaxis (MP; for subjects not achieving optimal prophylactic dosing with individualized or weekly prophylaxis). Subjects could change treatment groups at the start of or at any time during the study; for efficacy analyses, data were summarized according to the treatment group in which they participated, for the time period they were in that treatment group. The primary endpoint was development of inhibitors (neutralizing antibodies; confirmed at a central laboratory per Nijmegen-modified Bethesda assay result ≥0.6 BU/mL observed twice within 2-4 weeks). Secondary outcomes included incidence of adverse events (AEs), annualized bleeding rate (ABR), and rFIXFc exposure days (EDs). Post hoc analyses of subjects' prophylactic dose and dosing interval were performed to evaluate the stability of prophylactic dosing regimens over time. Results: At the time of the B-YOND interim data cut (17 October 2014), 23 subjects had completed Kids B-LONG; all enrolled in B-YOND (<6 years of age cohort, n=9; 6 to <12 years of age cohort, n=14). As of the interim data cut, 2/23 subjects had completed and 21/23 subjects continued B-YOND (median time on study: 11.0 [range: 2.7-13.9] months). From the start of Kids B-LONG to the B-YOND interim data cut, subjects had a median 21.9 (range: 14.4-25.4) months of treatment with rFIXFc, and a median 94 (interquartile range: 87-106) cumulative rFIXFc EDs. No inhibitors were reported during B-YOND with rFIXFc treatment (n=23 subjects with at least 1 evaluable inhibitor test result). AEs were generally typical of the pediatric hemophilia B population; 17 subjects (74%) reported at least 1 AE and 2 subjects (9%) reported at least 1 serious AE (SAE) on study. None of the AEs that emerged during B-YOND were assessed by the investigator as related to rFIXFc treatment, and no subject discontinued the study due to an AE. There were no reports of serious allergic reactions or anaphylaxis associated with rFIXFc, no vascular thrombotic events, and no deaths. Compared with their prophylactic regimen at the end of Kids B-LONG, 70% of subjects had either no change to or decreased their total weekly prophylactic dose during B-YOND; the median (IQR) total weekly prophylactic dose at the B-YOND data cut was 60.0 (50.0, 70.0) IU/kg. During B-YOND, 22/23 subjects (96%) either did not change or lengthened their prophylactic dosing interval, including 4 subjects who extended their dosing interval to every 10 days (3 subjects) or every 14 days (1 subject). Median ABRs were low in both age cohorts (Table); the overall median ABRs for spontaneous bleeds and spontaneous joint bleeds were 0.00 in all treatment groups. Overall, 95% of bleeding episodes were controlled with 1 or 2 infusions. Conclusions: These data confirm the long-term safety of rFIXFc and the maintenance of a low ABR in children treated with extended-interval prophylaxis. Table 1. Median (IQR) ABR during B-YOND Prophylactic treatment group: Weekly Individualized Modified Age cohort: <6 yrs (n=9) 6 to <12 yrs (n=10) 6 to <12 yrs (n=5) 6 to <12 yrs (n=1) Overall ABR 0.0 (0.0, 1.3) 2.7 (1.1, 3.2) 2.4 (2.0, 6.3) 3.1 Spontaneous ABR 0.0 (0.0, 0.0) 0.0 (0.0, 3.2) 0.0 (0.0, 0.9) 0.0 Spontaneous joint ABR 0.0 (0.0, 0.0) 0.0 (0.0, 1.6) 0.0 (0.0, 0.0) 0.0 No subjects from the <6 years of age cohort participated in the individualized or modified prophylaxis group. ABR=annualized bleeding rate; IQR=interquartile range Disclosures Kulkarni: Kedrion: Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees; Novo Nordisk: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Bayer: Membership on an entity's Board of Directors or advisory committees, Research Funding; Baxter: Membership on an entity's Board of Directors or advisory committees, Research Funding; Biogen: Research Funding, Speakers Bureau; BPL: Membership on an entity's Board of Directors or advisory committees. Nolan:Biogen and Sobi: Research Funding. Fischer:Baxalta/Baxter, Bayer, Pfizer, Novo Nordisk, and Biogen: Consultancy; Baxalta/Baxter, Bayer, Pfizer, and Novo Nordisk: Research Funding; Baxalta/Baxter, Bayer, Pfizer, Novo Nordisk, CSL Behring, and Octopharma: Speakers Bureau. Perry:Biogen: Consultancy, Honoraria; Novo Nordisk: Consultancy, Membership on an entity's Board of Directors or advisory committees. Barnes:Bayer, Novo Nordisk, and Pfizer: Research Funding; Bayer, Baxter, and Novo Nordisk: Membership on an entity's Board of Directors or advisory committees. Yuan:Biogen: Employment, Equity Ownership. Ramirez-Santiago:Biogen: Employment, Equity Ownership. Pierce:Biogen: Equity Ownership, Other: Former employee. Mei:Biogen: Employment, Equity Ownership.

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Strategies for Selection of AAV Vectors for Administration to Liver: Studies in Nonhuman Primates

Blood ◽

10.1182/blood.v128.22.2316.2316 ◽

2016 ◽

Vol 128 (22) ◽

pp. 2316-2316 ◽

Cited By ~ 1

Author(s):

Lili Wang ◽

James M Wilson ◽

Roberto Calcedo ◽

Peter Bell ◽

Zhenning He ◽

...

Keyword(s):

Gene Therapy ◽

Clinical Trials ◽

Gene Transfer ◽

Board Of Directors ◽

Research Funding ◽

Nonhuman Primates ◽

Hemophilia B ◽

Advisory Committees ◽

Equity Ownership ◽

Liver Gene

Abstract Vectors based on adeno-associated virus (AAV) have demonstrated early promise in clinical trials, including published reports in patients with hemophilia B where therapeutic levels of factor IX have been achieved using AAV serotype 8, a member of the clade E family. With the success of these hemophilia B clinical trials utilizing AAV8, numerous alternative AAV capsid types that target the liver have begun to enter clinical testing across multiple disease indications. Specific properties of the various AAV capsids should be taken into account such as overall efficiency of hepatocyte gene transfer, differential gene transfer across the porto-central axis within the liver, durability of gene expression and the potential for vector re-administration. In this study, we evaluated these aspects of AAV-directed liver gene transfer in rhesus macaques across various capsid serotypes. Animals were injected with vectors expressing the secreted reporter gene rhesus bhCG and produced using different capsids [AAV5, AAV3b and two clade E vectors (AAVrh10 and AAV8)]. Nonhuman primates (NHPs) injected with clade E vectors expressing bhCG were administered 3 months later with AAV5 or AAV3b vectors expressing rhesus derived AFP. The key findings were: 1) in naïve animals, clade E vectors demonstrated the highest levels of periportal gene transfer with AAV5 vectors having the lowest levels of periportal gene transfer; 2) AAVrh10 and AAV5 elicited higher levels of neutralizing antibodies (NAb) than AAV8 and AAV3b; 3) significant animal-to-animal variation in transgene expression was noted with AAV3b in seronegative animals; and 4) within the short time frame tested NAb elicited from AAVrh10 appears to have inhibited subsequent in vivo transduction with the serologically distinct AAV3b serotype; prior exposure to AAV8 did not interfere with AAV3b transduction. These studies highlight the influence that capsids can play in efficiency and immunogenicity of AAV vectors for liver gene therapy. Disclosures Wilson: Dimension Therapeutics: Consultancy, Equity Ownership, Patents & Royalties, Research Funding; Solid Gene Therapy: Consultancy, Membership on an entity's Board of Directors or advisory committees; REGENXBIO: Consultancy, Equity Ownership, Membership on an entity's Board of Directors or advisory committees, Patents & Royalties, Research Funding. Kattenhorn:Dimension Therapeutics: Employment. Wadsworth:Dimension Therapeutics: Employment, Equity Ownership.

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