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Chemical Structure| 1825352-65-5 Chemical Structure| 1825352-65-5

Structure of Risdiplam
CAS No.: 1825352-65-5

Chemical Structure| 1825352-65-5

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Risdiplam is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels.

Synonyms: RG7916; RO7034067; RO703406

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Product Details of Risdiplam

CAS No. :1825352-65-5
Formula : C22H23N7O
M.W : 401.46
SMILES Code : O=C1C=C(C2=NN3C(C(C)=C2)=NC(C)=C3)N=C4N1C=C(N(C5)CCNC65CC6)C=C4
Synonyms :
RG7916; RO7034067; RO703406
MDL No. :MFCD31657372
InChI Key :ASKZRYGFUPSJPN-UHFFFAOYSA-N
Pubchem ID :118513932

Safety of Risdiplam

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Related Pathways of Risdiplam

DNA

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
Lymphoblastoid cell lines (LCLs) 636 nM 24 hours To confirm the splice modulation effect of risdiplam on HTT, producing two major HTT alternative splice products Nat Commun. 2024 Apr 12;15(1):3182.
MDCKII cells 1 µM 3.5 hours To evaluate the passive permeability and transport properties of Risdiplam. Results showed that Risdiplam had an average passive permeability of around 350 nm/s in MDCKII cells and was not a substrate of human multidrug resistance protein 1 (MDR1). Pharmacol Res Perspect. 2018 Nov 29;6(6):e00447
LLC-PK1 cells 1 µM 3.5 hours To evaluate the passive permeability and transport properties of Risdiplam. Results showed that Risdiplam had an average passive permeability of around 350 nm/s in LLC-PK1 cells and was not a substrate of human multidrug resistance protein 1 (MDR1). Pharmacol Res Perspect. 2018 Nov 29;6(6):e00447

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
Mice, rats, and monkeys SMA mouse models (C/C-allele and SMN Δ7) Oral or intraperitoneal injection 0.1-10 mg/kg Once daily for 7-219 days To assess the tissue distribution of Risdiplam and its effect on SMN protein expression in animal models. Results showed that Risdiplam had similar drug levels in plasma, muscle, and brain, and increased SMN protein levels in both CNS and peripheral tissues. Pharmacol Res Perspect. 2018 Nov 29;6(6):e00447
Human 5q-spinal muscular atrophy (SMA) Oral 5 mg daily Once daily for 12 months To evaluate the effect of Risdiplam on swallowing function in adult SMA patients. Results showed significant improvement in subjective swallowing quality after 12 months of treatment. J Neurol. 2024 May;271(5):2649-2657
Cynomolgus monkeys Cynomolgus monkey retinal toxicity model Oral Daily administration for 39 weeks To evaluate retinal toxicity of Risdiplam in cynomolgus monkeys. Peripheral photoreceptor degeneration was observed at mid and high doses, and MMD in the central retina at high dose. These changes were partially reversible in the high-dose group. Ann Clin Transl Neurol. 2021 Jan;8(1):54-65
Human infants Type 1 spinal muscular atrophy (SMA) Oral At least 36 months To evaluate the long-term efficacy and safety of risdiplam versus nusinersen in children with type 1 SMA. Results showed that compared with nusinersen, risdiplam treatment was associated with a 78% reduction in the rate of death, an 81% reduction in the rate of death or permanent ventilation, and a 57% reduction in the rate of serious adverse events. Additionally, children treated with risdiplam had higher response rates on the Hammersmith Infant Neurological Examination, Module 2 and the Children’s Hospital of Philadelphia Infant Test of Neuromuscular Disorders. Adv Ther. 2024 Jun;41(6):2414-2434

Clinical Trial:

NCT Number Conditions Phases Recruitment Completion Date Locations
NCT03040635 Healthy Volunteers Phase 1 Completed - United States, California ... More >> Collaborative Neuroscience Network, Inc. Garden Grove, California, United States, 92845 Less <<
NCT02908685 Muscular Atrophy, Spinal Phase 2 Phase 3 Active, not recruiting July 12, 2020 -
NCT02633709 Spinal Muscular Atrophy Phase 1 Completed - Netherlands ... More >> Pra International Group B.V Groningen, Netherlands, 9728 NZ Less <<
NCT03036501 Healthy Phase 1 Completed - Netherlands ... More >> Pra International Group B.V Groningen, Netherlands, 9728 NZ Less <<
NCT02913482 Muscular Atrophy, Spinal PHASE2 COMPLETED 2023-12-22 Stanford University Medical Ce... More >>nter, Palo Alto, California, 94304, United States|Ann and Robert H. Lurie Children Hospital of Chicago, Chicago, Illinois, 60611, United States|Boston Childrens Hospital, Boston, Massachusetts, 02115, United States|Columbia University Medical Center; The Neurological Institute of New York, New York, New York, 10032, United States|UZ Gent, Gent, 9000, Belgium|UZ Leuven Gasthuisberg, Leuven, 3000, Belgium|Chr de La Citadelle, Liège, 4000, Belgium|Instituto de Puericultura E Pediatria Martag?o Gesteira, Rio de Janeiro, RJ, CEP 21941-912, Brazil|Hospital das Clinicas - FMUSP_X; Neurologia, Sao Paulo, SP, 05403-000, Brazil|Peking University First Hospital, Beijing City, 100034, China|Children's Hospital of Fudan University, Shanghai, 201102, China|Clinical Medical Center Zagreb; University Hospital Rebro Department of Paediatrics, Zagreb, 10000, Croatia|Hopital Femme Mere Enfant; Medecine Physique et Readaptation Pediatrique ? L?ESCALE, Bron, 69677, France|Hopital Armand Trousseau, Paris, 75571, France|IRCCS Ospedale Pediatrico Bambino Gesù; U.O. Malattie Neuromuscolari e Neurodegenerative, Roma, Lazio, 00165, Italy|Policlinico Agostino Gemelli; Dipartimento di Neuropsichiatria Infantile, Roma, Lazio, 00168, Italy|IRCCS Istituto Giannina Gaslini; U.O.S.D. Centro di Miologia e Patologie Neurodegenerative, Genova, Liguria, 16147, Italy|Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico; Unità Operativa Complessa di Neurologia, Milano, Lombardia, 20122, Italy|Fondazione IRCCS Istituto Neurologico ?Carlo Besta?; UO di Neurologia dello Sviluppo, Milano, Lombardia, 20133, Italy|Hyogo Medical University Hospital, Hyogo, 663-8501, Japan|Szpital Gdanskiego Uniwersytetu Medycznego; Clinic of developmental neurology, Gda?sk, 80-952, Poland|The Children?s Memorial Health Institute Department of Neurology and Epileptology, Warszawa, 04-730, Poland|Russian Children Neuromuscular Center of Veltischev, Moscow, Moskovskaja Oblast, 125412, Russian Federation|King Faisal Specialist Hospital and Research Centre Building, Riyadh, 11211, Saudi Arabia|Institute for Mother and Child Dr. Vukan Cupic, Belgrade, 11000, Serbia|Hospital Sant Joan De Deu, Esplugues De Llobregas, Barcelona, 08950, Spain|Hospital Universitari Vall d'Hebron; Area Genética Clínica y Molecular, Barcelona, 08035, Spain|Hospital Universitario Virgen del Rocio, Sevilla, 41013, Spain|Universit?ts-Kinderspital (UKBB) Neurop?diatrie, Basel, 4005, Switzerland|Hacettepe University, School of Medicine; Pediatrics Department; Pediatrics Child Neurology Unit, Ankara, 06100, Turkey|Hospital Yeditepe University Kozyatagi; Pediatry, Atasehir- Istanbul, 34752, Turkey|Ams of Ukraine; Inst. of Neurology, Psychiatry & Narcology, Kharkov, 61068, Ukraine Less <<
NCT03032172 Spinal Muscular Atrophy PHASE2 ACTIVE_NOT_RECRUITING 2025-02-25 Stanford University Medical Ce... More >>nter, Palo Alto, California, 94304, United States|Nemours Children's Hospital, Orlando, Florida, 32827, United States|Boston Childrens Hospital, Boston, Massachusetts, 02115, United States|Columbia University Medical Center, New York, New York, 10032, United States|UZ Gent, Gent, 9000, Belgium|UZ Leuven Gasthuisberg, Leuven, 3000, Belgium|Hopital Femme Mere Enfant, Bron, 69677, France|Hopital Roger Salengro, Lille, 59037, France|CHRU de Montpellier, Hopital Gui de Chauliac, Montpellier, 34295, France|H?pital Necker-Enfants Malades, Paris, 75015, France|Hopital des Enfants, Toulouse, 31059, France|Universit?tsklinikum Essen, Essen, 45147, Germany|Universit?tsklinikum Freiburg, Freiburg, 79106, Germany|IRCCS Ospedale Pediatrico Bambino Gesù, Roma, Lazio, 00165, Italy|Policlinico Agostino Gemelli, Roma, Lazio, 00168, Italy|IRCCS Istituto Giannina Gaslini, Genova, Liguria, 16147, Italy|Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Lombardia, 20122, Italy|UOSD Malattie Neurodegenerative, Messina, Sicilia, 98125, Italy|UMC Utrecht, Utrecht, 3584 CX, Netherlands|Klinika Neurologii I Wydzialu Lekarskiego WUM w Warszawie, Warszawa, 02-097, Poland|Universit?ts-Kinderspital (UKBB) Neurop?diatrie, Basel, 4005, Switzerland|Birmingham Heartlands Hospital, Birmingham, B9 5SS, United Kingdom|UCL Institute of Child Health & Great Ormond Street Hospital for Children, London, WC1N 1EH, United Kingdom|The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE1 4LP, United Kingdom Less <<
NCT04256265 Muscular Atrophy, Spinal APPROVED_FOR_MARKETING - Arkansas Children's Hospital; ... More >>Pediatrics, Little Rock, Arkansas, 72202, United States|Children's Hospital Los Angeles, Los Angeles, California, 90010, United States|Stanford University, Palo Alto, California, 94304, United States|University of Colorado in Denver-Anschutz Medical Campus, Aurora, Colorado, 80045, United States|Nemours Children's Hospital, Orlando, Florida, 32827, United States|Comprehensive NeuroBehavioral Institute, Plantation, Florida, 33317, United States|Rare Disease Research, LLC, Atlanta, Georgia, 30318, United States|Ann and Robert H. Lurie Children Hospital of Chicago, Chicago, Illinois, 60611, United States|Southern Illinois University, School of Medicine, Springfield, Illinois, 62702, United States|Indiana Hemophilia & Thrombosis center, Indianapolis, Indiana, 46260, United States|University of Iowa, Iowa City, Iowa, 52242, United States|University of Kansas Medical Center, Kansas City, Kansas, 66160, United States|University of Louisville, Louisville, Kentucky, 40202, United States|Massachusetts General Hospital; Neurology, Boston, Massachusetts, 02114, United States|Helen DeVos Children's Hospital at Spectrum Health, Grand Rapids, Michigan, 49503, United States|University of Mississippi Medical Center; Neurology, Jackson, Michigan, 39216, United States|Gillette Spcl Children's Clin; Pediatric Endocrinology, Saint Paul, Minnesota, 55101, United States|St. Louis Children Hospital, Saint Louis, Missouri, 63110, United States|Goryeb Children's Hospital, Morristown, New Jersey, 07960, United States|Northwell Hospital, New Hyde Park, New York, 11042, United States|NYU Langone, New York, New York, 10003, United States|University of Rochester Medical Center, Rochester, New York, 14642, United States|Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, 27157, United States|Akron Childrens Hospital, Akron, Ohio, 44308, United States|Nationwide Children's Hospital, Columbus, Ohio, 43205, United States|University of Virginia Children's Hospital; Developmental, Charlottesville, Virginia, 22903, United States|University of Wisconsin American Family; Childrens Hospital, Madison, Wisconsin, 53792, United States|Childrens Hospital of Wisconsin, Milwaukee, Wisconsin, 53201, United States|Medical College of Wisconsin, Inc., Milwaukee, Wisconsin, 53226-3596, United States Less <<
NCT05808764 Muscular Atrophy, Spinal PHASE2 RECRUITING 2025-08-31 Ann and Robert H. Lurie Childr... More >>en Hospital of Chicago, Chicago, Illinois, 60611, United States|University Of Michigan, Ann Arbor, Michigan, 48109, United States|Clinic for Special Children., Gordonville, Pennsylvania, 17529, United States|Hopital Universitaire des Enfants Reine Fabiola, Bruxelles, 1020, Belgium|CHR Citadelle, Liege, 4000, Belgium|Children'S Hospital of Eastern Ontario, Ottawa, Ontario, K1H 8L1, Canada|Universitatsklinikum Essen, Essen, 45147, Germany|Fondazione Serena Onlus - CENTRO CLINICO NEMO, Milano, Emilia-Romagna, 20162, Italy|Fondazione Policlinico Univeristario A. Gemelli, Roma, Emilia-Romagna, 00168, Italy|UMC Utrecht, Utrecht, 3508, Netherlands|OUS (Oslo University Hospital), Rikshospitalet, Oslo, 0372, Norway|Uniwersyteckie Centrum Kliniczne, Gda?sk, 80-952, Poland|Instytut Pomnik - Centrum Zdrowia Dziecka, Warszawa, 04-730, Poland Less <<
NCT03779334 Muscular Atrophy, Spinal PHASE2 ACTIVE_NOT_RECRUITING 2027-03-31 Nemours Children's Hospital, O... More >>rlando, Florida, 32827, United States|Sydney Children's Hospital; CENTRE FOR CHILD HEALTH RESEARCH & INNOVATION (CHeRI), Randwick, New South Wales, 2031, Australia|Chr de La Citadelle, Liège, 4000, Belgium|Hospital das Clinicas - FMUSP_X; Neurologia, Sao Paulo, SP, 05403-000, Brazil|Szpital Gdanskiego Uniwersytetu Medycznego; Clinic of developmental neurology, Gda?sk, 80-952, Poland|Russian Children Neuromuscular Center of Veltischev, Moscow, Moskovskaja Oblast, 125412, Russian Federation|Kaohsiung Medical University Chung-Ho Hospital; Pediatric Neurology, Kaohsiung, 807, Taiwan Less <<
NCT05522361 Spinal Muscular Atrophy PHASE4 ACTIVE_NOT_RECRUITING 2026-06-15 Clinic for Special Children, S... More >>trasburg, Pennsylvania, 17579, United States Less <<
NCT05219487 Spinal Muscular Atrophy RECRUITING 2025-12-31 The Ohio State University Wexn... More >>er Medical Center, Columbus, Ohio, 43210, United States Less <<
NCT03920865 Muscular Atrophy, Spinal PHASE1 COMPLETED 2020-01-02 Clinical Pharmacology of Miami... More >>, Inc., Miami, Florida, 33014, United States|Orlando Clinical Research Center, Orlando, Florida, 32809, United States|American Research Corporation Inc., San Antonio, Texas, 78215, United States Less <<

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

2.49mL

0.50mL

0.25mL

12.45mL

2.49mL

1.25mL

24.91mL

4.98mL

2.49mL

References

 

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