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Abstract Details

The Safety and Efficacy of Chronic Weekly Rozanolixizumab Treatment in Patients with Generalized Myasthenia Gravis (MG0004)
Autoimmune Neurology
P4 - Poster Session 4 (11:45 AM-12:45 PM)
14-017
To evaluate the safety, tolerability and efficacy of chronic, weekly rozanolixizumab in patients with generalized myasthenia gravis (MG). 
In the Phase 3 MycarinG study (MG0003/NCT03971422), six once-weekly subcutaneous infusions of rozanolixizumab 7mg/kg or 10mg/kg significantly improved MG-specific outcomes versus placebo. After MycarinG, patients could enroll in open-label extension MG0004 (NCT04124965).
In MG0004, patients were randomized (1:1) to once-weekly subcutaneous rozanolixizumab 7mg/kg or 10mg/kg for 52 weeks, followed by an 8-week observation period. Patients could switch dose at the investigators’ discretion. After ≥6 visits, patients could roll over into MG0007 (NCT04650854), which replaced MG0004. Analyses are presented by first dose received unless specified otherwise. Efficacy data are presented to Week 33.
In MG0004, 70 patients received rozanolixizumab 7mg/kg (n=35) or 10mg/kg (n=35). Mean duration of rozanolixizumab was 22.9 (7mg/kg) and 23.7 (10mg/kg) weeks. Patient numbers after Week 33 (17/70 [24.3%]) were low, primarily due to rollover into MG0007. Eight (11.3%) patients completed 52 weeks in MG0004. Treatment-emergent adverse events by most recent dose were reported in 76.0% (38/50; 7mg/kg) and 78.6% (33/42; 10mg/kg) of patients; most mild or moderate. Headache occurred in 30.0% (15/50; 7mg/kg) and 28.6% (12/42; 10mg/kg) of patients and infections in 26.0% (13/50; 7mg/kg) and 21.4% (9/42; 10mg/kg) of patients. Clinically relevant improvements in MG-Activities of Daily Living score were observed; mean reduction from baseline between Weeks 7–33 ranged from −2.7 to −3.1 (7mg/kg) and −3.4 to −4.1 points (10mg/kg). Mean Quantitative MG score improvements ranged from −2.6 to −5.4 (7mg/kg) and −4.2 to −6.2 points (10mg/kg). Mean maximum reduction from baseline in total serum immunoglobulin G was 74.7% (7mg/kg) and 78.4% (10mg/kg). No clinically relevant reductions in albumin were observed.
Chronic, weekly rozanolixizumab was well tolerated, with a safety profile similar to repeated cycles of rozanolixizumab treatment. Clinically relevant mean improvements were maintained across MG-specific outcomes.
Authors/Disclosures
Vera Bril, MD (Toronto General Hospital)
PRESENTER 		Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for CSL. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Alnylam. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Janssen. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Grifols. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Takeda. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Octapharma. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Pfizer. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Powell Mansfield. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Akcea. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Ionis. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Immunovant. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sanofi. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Momenta (now J&J). Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Alexion. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving as a Consultant for NovoNordisk. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Takeda. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Immunovant. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Bril has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Akcea. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alnylam. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for CSL. Dr. Bril has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Argenx. The institution of Dr. Bril has received research support from UCB. The institution of Dr. Bril has received research support from Argenx. The institution of Dr. Bril has received research support from Momenta (now J&J). The institution of Dr. Bril has received research support from Immunovant. The institution of Dr. Bril has received research support from Alexion. The institution of Dr. Bril has received research support from Takeda. The institution of Dr. Bril has received research support from Grifols. The institution of Dr. Bril has received research support from CSL. The institution of Dr. Bril has received research support from Octapharma. The institution of Dr. Bril has received research support from Akcea. The institution of Dr. Bril has received research support from Ionis. The institution of Dr. Bril has received research support from Viela Bio (now Horizon). Dr. Bril has received intellectual property interests from a discovery or technology relating to health care.
Artur Druzdz Artur Druzdz has nothing to disclose.
Julian Grosskreutz Dr. Grosskreutz has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biogen. Dr. Grosskreutz has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Alexion. Dr. Grosskreutz has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Grosskreutz has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Amylyx. The institution of Dr. Grosskreutz has received research support from Boris Canessa Foundation.
Ali A. Habib, MD (University of California, Irvine) Dr. Habib has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Alexion. Dr. Habib has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for argenx. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Immunovant. Dr. Habib has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for UCB. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Pfizer. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Genentech/Roche. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for NMD Pharma. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Horizon/ Amgen. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Grifols. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Kyverna. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Jansen/Johnson & Johnson. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving as a Consultant for EMDSerono/Merck. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for NIH/NINDS. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Immunis Biomedical. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Hoffman-La Roche. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Habib has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Alexion. Dr. Habib has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for argenx. Dr. Habib has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for UCB. Dr. Habib has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Jansen/Joohnson & Johnson. The institution of Dr. Habib has received research support from Alexion. The institution of Dr. Habib has received research support from Horizon/Amgen. The institution of Dr. Habib has received research support from Immunovant. The institution of Dr. Habib has received research support from UCB. The institution of Dr. Habib has received research support from argenx. The institution of Dr. Habib has received research support from CabalettaBio. The institution of Dr. Habib has received research support from Regeneron. The institution of Dr. Habib has received research support from Arcellx. The institution of Dr. Habib has received research support from Novartis. The institution of Dr. Habib has received research support from EMDSerono/Merck. The institution of Dr. Habib has received research support from Cour Pharmaceuticals.
Henry J. Kaminski, MD, FAAN (George Washington University) Dr. Kaminski has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Kaminski has received personal compensation in the range of $0-$499 for serving as a Consultant for Cabaletta Bio. The institution of Dr. Kaminski has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Merck. Dr. Kaminski has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Canopy Immunotherapeutics. Dr. Kaminski has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Curie.bio. Dr. Kaminski has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Samsung. Dr. Kaminski has received personal compensation in the range of $0-$499 for serving as a Consultant for Care Constitution. Dr. Kaminski has stock in mimivax. The institution of Dr. Kaminski has received research support from National Institutes of Health. Dr. Kaminski has received publishing royalties from a publication relating to health care.
Renato Mantegazza, MD Dr. Mantegazza has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Mantegazza has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for UCB. Dr. Mantegazza has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for argenx. Dr. Mantegazza has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Dr. Mantegazza has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for SERB. The institution of Dr. Mantegazza has received research support from Alpine Immune Sciences, Inc.
Sabrina Sacconi, MD Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving as a Consultant for LUPIN. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for SANOFI. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for BIOGEN. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for AMICUS. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for UCB Pharma. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for ALEXION. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for FULCRUM THERAPEUTICS. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving as an Expert Witness for AXELYS. Dr. Sacconi has received personal compensation in the range of $500-$4,999 for serving as an Expert Witness for OLOGY. The institution of Dr. Sacconi has received research support from Solve FSHD.
Kimiaki Utsugisawa, MD, PhD (Hanamaki General Hospital) Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for argenx. Dr. Utsugisawa has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for UCB pharma. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Janssen pharma. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Viela Bio. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Chugai. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Mitsubisi Tanabe pharma. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Merck. Dr. Utsugisawa has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for argenx. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Alexion phama. Dr. Utsugisawa has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Japan Blood Products Organization. Dr. Utsugisawa has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for UCB.
Tuan H. Vu, MD (University of South Florida) Dr. Vu has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Dianthus. Dr. Vu has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amgen. Dr. Vu has received personal compensation in the range of $500-$4,999 for serving as a Consultant for NMD Pharma. Dr. Vu has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for ARGENX. Dr. Vu has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alexion. Dr. Vu has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for UCB. Dr. Vu has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Amgen (Horizon). Dr. Vu has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Johnson & Johnson. Dr. Vu has received personal compensation in the range of $50,000-$99,999 for serving on a Speakers Bureau for Alexion. Dr. Vu has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for CSL Behring. Dr. Vu has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Argenx. The institution of Dr. Vu has received research support from CSL Behring. The institution of Dr. Vu has received research support from Alexion. The institution of Dr. Vu has received research support from RA Pharma/UCB. The institution of Dr. Vu has received research support from Mass Gen Hospital/Healy Platform Study. The institution of Dr. Vu has received research support from ARGENX. The institution of Dr. Vu has received research support from Horizon/Amgen. The institution of Dr. Vu has received research support from Woolsey Pharma. The institution of Dr. Vu has received research support from CSL Behring. The institution of Dr. Vu has received research support from Cartesian Therapeutics. The institution of Dr. Vu has received research support from Janssen/Johnson & Johnson. The institution of Dr. Vu has received research support from Immunovant. The institution of Dr. Vu has received research support from Regeneron. The institution of Dr. Vu has received research support from Dianthus. The institution of Dr. Vu has received research support from COUR.
Marion Boehnlein Marion Boehnlein has stock in UCB.
Franz Woltering No disclosure on file
Bernhard Greve, MD (UCB Biosciences GmbH) Dr. Greve has received personal compensation for serving as an employee of UCB Biosciences. Dr. Greve has stock in UCB Biosciences.
Maryam Gayfieva (UCB) No disclosure on file
John Vissing, MD (Rigshospitalet) Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sanofi. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Dyne Therapeutics. Prof. Vissing has received personal compensation in the range of $0-$499 for serving as a Consultant for Denali Therapeutics. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amicus therapeutics. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amgen. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Avidity Therapeutics. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Italfarmaco. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Alexion. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biogen. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Merck. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sarepta. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for NMD Pharma. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Amgen. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for NMD Pharma. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avidity. Prof. Vissing has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Sarepta. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Alexion Pharmaceuticals. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Johnson & Johnson (Janssen). Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Edgewise Therapeutics. Prof. Vissing has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for UCB. The institution of Prof. Vissing has received research support from Rigshospitalet. The institution of Prof. Vissing has received research support from Avidity. The institution of Prof. Vissing has received research support from Sanofi. The institution of Prof. Vissing has received research support from Roche. The institution of Prof. Vissing has received research support from AnnJi.