Browsing by Author "Vu, Tuan"

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    Efficacy and safety of rozanolixizumab in patients with muscle-specific tyrosine kinase autoantibody-positive generalised myasthenia gravis: a subgroup analysis of the randomised, double-blind, placebo-controlled, adaptive phase III MycarinG study
    (Sage, 2024-09-12) Habib, Ali A.; Sacconi, Sabrina; Antonini, Giovanni; Cortés-Vicente, Elena; Grosskreutz, Julian; Mahuwala, Zabeen K.; Mantegazza, Renato; Pascuzzi, Robert M.; Utsugisawa, Kimiaki; Vissing, John; Vu, Tuan; Wiendl, Heinz; Boehnlein, Marion; Greve, Bernhard; Woltering, Franz; Bril, Vera; Neurology, School of Medicine
    Background: Muscle-specific tyrosine kinase (MuSK) autoantibody-positive (Ab+) generalised myasthenia gravis (gMG) is a rare and frequently severe subtype of gMG. Objectives: To assess the efficacy and safety of rozanolixizumab in the subgroup of patients with MuSK Ab+ gMG in the MycarinG study. Design: A randomised, double-blind, placebo-controlled phase III study. Methods: Patients with acetylcholine receptor (AChR) Ab+ or MuSK Ab+ gMG (aged ⩾18 years, Myasthenia Gravis Foundation of America Disease Class II-IVa, Myasthenia Gravis Activities of Daily Living [MG-‍ADL] score ⩾3.0 [non-ocular symptoms], Quantitative Myasthenia Gravis score ⩾11.0) were randomly assigned (1:1:1) to receive once-weekly subcutaneous infusions of rozanolixizumab 7 mg/kg, rozanolixizumab 10 mg/kg or placebo for 6 weeks, followed by an 8-week observation period. Randomisation was stratified by AChR and MuSK autoantibody status. The primary study endpoint was change from baseline to Day 43 in MG-ADL score. Treatment-emergent adverse events (TEAEs) were also assessed. Results: Overall, 200 patients were randomised, of whom 21 had MuSK Ab+ gMG and received rozanolixizumab 7 mg/kg (n = 5), 10 mg/kg (n = 8) or placebo (n = 8). In patients with MuSK Ab+ gMG, reductions from baseline to Day 43 in MG-ADL scores were observed: rozanolixizumab 7 mg/kg least squares mean (LSM) change (standard error), -7.28 (1.94); 10 mg/kg, -4.16 (1.78); and placebo, 2.28 (1.95). Rozanolixizumab 7 mg/kg LSM difference from placebo was -9.56 (97.5% confidence interval: -15.25, -3.87); 10 mg/kg, -6.45 (-11.03, -1.86). TEAEs were experienced by four (80.0%), five (62.5%) and three (37.5%) patients with MuSK Ab+ gMG receiving rozanolixizumab 7 mg/kg, 10 mg/kg and placebo, respectively. No patients experienced serious TEAEs. No deaths occurred. Conclusion: This subgroup analysis of adult patients with MuSK Ab+ gMG enrolled in the MycarinG study supports the use of rozanolixizumab as an effective treatment option for patients with gMG who have MuSK autoantibodies.
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    A Phase 2, Double-Blind, Randomized, Dose-Ranging Trial Of Reldesemtiv In Patients With ALS
    (Taylor & Francis, 2021-05) Shefner, Jeremy M.; Andrews, Jinsy A.; Genge, Angela; Jackson, Carlayne; Lechtzin, Noah; Miller, Timothy M.; Cockroft, Bettina M.; Meng, Lisa; Wei, Jenny; Wolff, Andrew A.; Malik, Fady I.; Bodkin, Cynthia; Brooks, Benjamin R.; Caress, James; Dionne, Annie; Fee, Dominic; Goutman, Stephen A.; Goyal, Namita A.; Hardiman, Orla; Hayat, Ghazala; Heiman-Patterson, Terry; Heitzman, Daragh; Henderson, Robert D.; Johnston, Wendy; Karam, Chafic; Kiernan, Matthew C.; Kolb, Stephen J.; Korngut, Lawrence; Ladha, Shafeeq; Matte, Genevieve; Mora, Jesus S.; Needham, Merrilee; Oskarsson, Bjorn; Pattee, Gary L.; Pioro, Erik P.; Pulley, Michael; Quan, Dianna; Rezania, Kourosh; Schellenberg, Kerri L.; Schultz, David; Shoesmith, Christen; Simmons, Zachary; Statland, Jeffrey; Sultan, Shumaila; Swenson, Andrea; Van Den Berg, Leonard H.; Vu, Tuan; Vucic, Steve; Weiss, Michael; Whyte-Rayson, Ashley; Wymer, James; Zinman, Lorne; Rudnicki, Stacy A.; Neurology, School of Medicine
    To evaluate safety, dose response, and preliminary efficacy of reldesemtiv over 12 weeks in patients with amyotrophic lateral sclerosis (ALS). Methods: Patients (≤2 years since diagnosis) with slow upright vital capacity (SVC) of ≥60% were randomized 1:1:1:1 to reldesemtiv 150, 300, or 450 mg twice daily (bid) or placebo; active treatment was 12 weeks with 4-week follow-up. Primary endpoint was change in percent predicted SVC at 12 weeks; secondary measures included ALS Functional Rating Scale-Revised (ALSFRS-R) and muscle strength mega-score. Results: Patients (N = 458) were enrolled; 85% completed 12-week treatment. The primary analysis failed to reach statistical significance (p = 0.11); secondary endpoints showed no statistically significant effects (ALSFRS-R, p = 0.09; muscle strength mega-score, p = 0.31). Post hoc analyses pooling all active reldesemtiv-treated patients compared against placebo showed trends toward benefit in all endpoints (progression rate for SVC, ALSFRS-R, and muscle strength mega-score (nominal p values of 0.10, 0.01 and 0.20 respectively)). Reldesemtiv was well tolerated, with nausea and fatigue being the most common side effects. A dose-dependent decrease in estimated glomerular filtration rate was noted, and transaminase elevations were seen in approximately 5% of patients. Both hepatic and renal abnormalities trended toward resolution after study drug discontinuation. Conclusions: Although the primary efficacy analysis did not demonstrate statistical significance, there were trends favoring reldesemtiv for all three endpoints, with effect sizes generally regarded as clinically important. Tolerability was good; modest hepatic and renal abnormalities were reversible. The impact of reldesemtiv on patients with ALS should be assessed in a pivotal Phase 3 trial. (ClinicalTrials.gov Identifier: NCT03160898).