Abstract Details

Title Pooled Safety Data from the Risdiplam Clinical Trial Development Program

Topic Child Neurology and Developmental Neurology

Presentation(s) P18 - Poster Session 18 (5:30 PM-6:30 PM)

Poster/Presentation
Number 6-001

Background Risdiplam (EVRYSDI®) is a centrally and peripherally distributed, oral survival of motor neuron 2 (SMN2) pre-mRNA splicing modifier that has been approved by the FDA for the treatment of patients with SMA, aged ≥2 months.

Objective To determine the long-term safety of risdiplam in patients with spinal muscular atrophy (SMA) who have participated in the risdiplam studies.

Design/Methods Safety data were pooled from three studies within the risdiplam clinical trial program:
• FIREFISH (NCT02913482) assesses safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD) and efficacy of risdiplam in infants with Type 1 SMA (aged 1–7 months at enrollment)
• SUNFISH (NCT02908685) assesses safety, tolerability, PK, PD and efficacy of risdiplam in patients with Types 2/3 SMA (aged 2–25 years at enrollment)
• JEWELFISH (NCT03032172) assesses safety, tolerability, PK and PD of risdiplam in patients with SMA (aged 6 months–60 years at enrollment) who previously received RG7800 (RO6885247), nusinersen (SPINRAZA®), olesoxime or onasemnogene abeparvovec (ZOLGENSMA®).

Results

Pooled analyses from FIREFISH Parts 1 and 2, SUNFISH Parts 1 and 2 and JEWELFISH showed no treatment-related safety findings leading to withdrawal in 465 patients treated with risdiplam for up to 38.9 months (data-cuts: 14 November 2019, 15 January 2020 and 31 January 2020, respectively). Differences in adverse event (AE) profiles between Type 1 and Types 2/3 SMA populations appeared to be driven by the severity of underlying disease, and AEs/serious AEs reflected illnesses and conditions that are common in the respective age groups. There was a marked decline in SAE rates over time in Type 1 SMA, which may be indicative of the therapeutic benefit of risdiplam. Here we present updated pooled safety analyses for risdiplam.

Conclusions

Pooled data across the risdiplam studies suggest risdiplam has a positive benefit-risk profile. This analysis will add to the understanding of the long-term safety profile of risdiplam.

Authors/Disclosures
Basil T. Darras, MD (Children'S Hosp Boston Harvard Med School) PRESENTER	The institution of Dr. Darras has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amicus. Dr. Darras has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Amicus. The institution of Dr. Darras has received research support from National Institutes of Health/National Institute of Neurological Disorders and Stroke,. The institution of Dr. Darras has received research support from Slaney Family Fund for SMA. The institution of Dr. Darras has received research support from Spinal Muscular Atrophy Foundation. The institution of Dr. Darras has received research support from CureSMA. The institution of Dr. Darras has received research support from Working on Walking Fund . The institution of Dr. Darras has received research support from CHERISH, CS2/CS12 . The institution of Dr. Darras has received research support from Biogen for CS11. The institution of Dr. Darras has received research support from AveXis. The institution of Dr. Darras has received research support from Sarepta Pharmaceuticals. The institution of Dr. Darras has received research support from PTC Therapeutics. The institution of Dr. Darras has received research support from Roche. The institution of Dr. Darras has received research support from Santhera. The institution of Dr. Darras has received research support from Scholar Rock. The institution of Dr. Darras has received research support from Fibrogen. The institution of Dr. Darras has received research support from Summit. Dr. Darras has received publishing royalties from a publication relating to health care. Dr. Darras has received publishing royalties from a publication relating to health care.
Claudia A. Chiriboga, MD, FAAN (Columbia University)	Dr. Chiriboga has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Genentec. Dr. Chiriboga has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. The institution of Dr. Chiriboga has received research support from Roche. The institution of Dr. Chiriboga has received research support from Avexis/Novartis. The institution of Dr. Chiriboga has received research support from Biogen. The institution of Dr. Chiriboga has received research support from NIH. The institution of Dr. Chiriboga has received research support from Biohaven. The institution of Dr. Chiriboga has received research support from Genentec. Dr. Chiriboga has received publishing royalties from a publication relating to health care.
Laurent Servais (John Radcliffe Hospital)	Laurent Servais has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Biogen. Laurent Servais has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Roche. Laurent Servais has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Novartis. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Astellas. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Pfizer. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sarepta. The institution of Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Evox. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for PTC. Laurent Servais has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Sysnav. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for BioHaven. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Dyne. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Zentech. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving as a Consultant for MitoRx. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Lupin. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Fibrogen. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Alltrana. Laurent Servais has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Illumina. Laurent Servais has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. The institution of Laurent Servais has received research support from Roche. The institution of Laurent Servais has received research support from Novartis. The institution of Laurent Servais has received research support from Biogen. The institution of Laurent Servais has received research support from Zentech. The institution of Laurent Servais has received research support from BioHaven. The institution of Laurent Servais has received research support from PerkinHalmers. The institution of Laurent Servais has received research support from Scholar Rock.
Giovanni Baranello	Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving as a Consultant for AveXis. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for AveXis. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Roche. Giovanni Baranello has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for AveXis. The institution of Giovanni Baranello has received research support from Great Ormond Street Hospital Charity.
Enrico S. Bertini, MD (Bambino Gesu Hospital)	Dr. Bertini has received personal compensation for serving as an employee of Bambino Gesu' Children's Resesarch Hospital.
John W. Day, MD, PhD (Stanford University School of Medicine)	Dr. Day has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Affinia Therapeutics. Dr. Day has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis Gene Therapy. Dr. Day has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche/Genentech. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sarepta. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Scholar Rock. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avidity. Dr. Day has received personal compensation in the range of $10,000-$49,999 for serving as an officer or member of the Board of Directors for Muscular Dystrophy Association. The institution of Dr. Day has received research support from Audentes. The institution of Dr. Day has received research support from Novartis Gene Therapy. The institution of Dr. Day has received research support from Biogen. The institution of Dr. Day has received research support from Cytokinetics. The institution of Dr. Day has received research support from Roche/Genentech. The institution of Dr. Day has received research support from Sanofi/Genzyme. The institution of Dr. Day has received research support from Sarepta. The institution of Dr. Day has received research support from Scholar Rock. Dr. Day has received intellectual property interests from a discovery or technology relating to health care.
Nicholas Deconinck	Nicholas Deconinck has received personal compensation in the range of $500-$4,999 for serving as a Consultant for biogen. Nicholas Deconinck has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for roche. Nicholas Deconinck has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for avexis. Nicholas Deconinck has received publishing royalties from a publication relating to health care.
Dirk Fischer	The institution of Dirk Fischer has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Hoffmann La Roche AG. The institution of Dirk Fischer has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Hoffmann La Roche AG.
Nathalie M. Goemans, MD (University Hospitals Leuven)	Dr. Goemans has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Pfizer. Dr. Goemans has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Biogen. Dr. Goemans has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Roche. Dr. Goemans has received publishing royalties from a publication relating to health care.
Janbernd Kirschner	No disclosure on file
	No disclosure on file
	No disclosure on file
Maria Mazurkiewicz-Beldzin (Medical University of Gdansk)	Dr. Mazurkiewicz Beldzin has received personal compensation in the range of $0-$499 for serving as a Consultant for Biogen, . Dr. Mazurkiewicz Beldzin has received personal compensation in the range of $0-$499 for serving as a Consultant for Novartis. Dr. Mazurkiewicz Beldzin has received personal compensation in the range of $0-$499 for serving as a Consultant for Roche. Dr. Mazurkiewicz Beldzin has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Dr. Mazurkiewicz Beldzin has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis.
	No disclosure on file
Silvia Bader-Weder, MD (F. Hoffmann-La Roche)	Dr. Bader-Weder has received personal compensation for serving as an employee of F. Hoffmann - La Roche. Dr. Bader-Weder has received stock or an ownership interest from F. Hoffmann - La Roche.
Ksenija Gorni	Dr. Gorni has received personal compensation for serving as an employee of Hoffman La Roche.
Birgit Jaber	No disclosure on file
	No disclosure on file
	No disclosure on file
	No disclosure on file