FDA Grants Priority Review for Biologics License Application (BLA) and EMA Accepts Marketing Authorisation Application (MAA) for Apitegromab as a Treatment for Spinal Muscular Atrophy
Scholar Rock (NASDAQ: SRRK) has received FDA Priority Review for its Biologics License Application (BLA) for apitegromab, a first-in-class muscle-targeted treatment for Spinal Muscular Atrophy (SMA). The FDA has set a PDUFA date of September 22, 2025.
Additionally, the European Medicines Agency (EMA) has validated the Marketing Authorisation Application (MAA) for apitegromab. The submissions are supported by positive data from the Phase 3 SAPPHIRE trial, which demonstrated statistically significant and clinically meaningful motor function improvements in SMA patients receiving apitegromab alongside SMN-targeted treatments.
The company is preparing for commercial launch in the U.S. in 2025, followed by European launch in 2026. The FDA's priority review designation indicates potential significant improvement in treatment effectiveness for SMA patients.
Scholar Rock (NASDAQ: SRRK) ha ricevuto la Revisione Prioritaria da parte della FDA per la sua Domanda di Licenza Biologica (BLA) per apitegromab, un trattamento innovativo mirato ai muscoli per l'Atrofia Muscolare Spinale (SMA). La FDA ha fissato una data PDUFA per il 22 settembre 2025.
Inoltre, l'Agenzia Europea dei Medicinali (EMA) ha convalidato la Domanda di Autorizzazione alla Commercializzazione (MAA) per apitegromab. Le domande sono supportate da dati positivi provenienti dallo studio di Fase 3 SAPPHIRE, che ha dimostrato miglioramenti significativi e clinicamente rilevanti nella funzione motoria nei pazienti con SMA che ricevono apitegromab insieme a trattamenti mirati a SMN.
L'azienda si sta preparando per il lancio commerciale negli Stati Uniti nel 2025, seguito dal lancio europeo nel 2026. La designazione di revisione prioritaria da parte della FDA indica un potenziale miglioramento significativo nell'efficacia del trattamento per i pazienti con SMA.
Scholar Rock (NASDAQ: SRRK) ha recibido la Revisión Prioritaria de la FDA para su Solicitud de Licencia Biológica (BLA) para apitegromab, un tratamiento de primera clase dirigido a los músculos para la Atrofia Muscular Espinal (AME). La FDA ha establecido una fecha PDUFA para el 22 de septiembre de 2025.
Además, la Agencia Europea de Medicamentos (EMA) ha validado la Solicitud de Autorización de Comercialización (MAA) para apitegromab. Las presentaciones están respaldadas por datos positivos del ensayo de Fase 3 SAPPHIRE, que demostró mejoras significativas y clínicamente relevantes en la función motora de los pacientes con AME que reciben apitegromab junto con tratamientos dirigidos a SMN.
La empresa se está preparando para el lanzamiento comercial en los EE. UU. en 2025, seguido del lanzamiento europeo en 2026. La designación de revisión prioritaria de la FDA indica una mejora potencial significativa en la efectividad del tratamiento para los pacientes con AME.
Scholar Rock (NASDAQ: SRRK)는 apitegromab에 대한 생물학적 제품 허가 신청(BLA)에 대해 FDA의 우선 검토를 받았습니다. 이는 척수성 근위축증(SMA)을 위한 최초의 근육 표적 치료제입니다. FDA는 2025년 9월 22일을 PDUFA 날짜로 설정했습니다.
또한, 유럽 의약품청(EMA)은 apitegromab에 대한 마케팅 허가 신청(MAA)을 검증했습니다. 이 제출물은 SMA 환자들이 SMN 표적 치료와 함께 apitegromab을 받으면서 보여준 통계적으로 유의미하고 임상적으로 중요한 운동 기능 개선을 입증한 3상 SAPPHIRE 시험의 긍정적인 데이터를 지원합니다.
회사는 2025년 미국에서 상업적 출시를 준비하고 있으며, 2026년에는 유럽 출시를 계획하고 있습니다. FDA의 우선 검토 지정은 SMA 환자에 대한 치료 효과의 잠재적인 중요한 개선을 나타냅니다.
Scholar Rock (NASDAQ: SRRK) a reçu une Révision Prioritaire de la FDA pour sa Demande de Licence Biologique (BLA) pour apitegromab, un traitement ciblé sur les muscles de première classe pour l'Atrophie Musculaire Spinale (AMS). La FDA a fixé une date PDUFA au 22 septembre 2025.
De plus, l'Agence Européenne des Médicaments (EMA) a validé la Demande d'Autorisation de Mise sur le Marché (MAA) pour apitegromab. Les soumissions sont soutenues par des données positives de l'essai de Phase 3 SAPPHIRE, qui a démontré des améliorations statistiquement significatives et cliniquement pertinentes de la fonction motrice chez les patients atteints d'AMS recevant apitegromab en plus des traitements ciblés sur SMN.
L'entreprise se prépare à un lancement commercial aux États-Unis en 2025, suivi d'un lancement européen en 2026. La désignation de révision prioritaire de la FDA indique une amélioration potentielle significative de l'efficacité du traitement pour les patients atteints d'AMS.
Scholar Rock (NASDAQ: SRRK) hat von der FDA eine Prioritätsprüfung für seinen Antrag auf biologische Lizenz (BLA) für apitegromab erhalten, eine erstmalige muskelgerichtete Behandlung für die spinale Muskelatrophie (SMA). Die FDA hat einen PDUFA-Termin für den 22. September 2025 festgelegt.
Darüber hinaus hat die Europäische Arzneimittel-Agentur (EMA) den Antrag auf Marktzulassung (MAA) für apitegromab validiert. Die Einreichungen werden durch positive Daten aus der Phase-3-Studie SAPPHIRE unterstützt, die statistisch signifikante und klinisch relevante Verbesserungen der motorischen Funktion bei SMA-Patienten zeigt, die apitegromab zusammen mit SMN-zielgerichteten Behandlungen erhalten.
Das Unternehmen bereitet sich auf den kommerziellen Launch in den USA im Jahr 2025 vor, gefolgt von einem europäischen Launch im Jahr 2026. Die Prioritätsprüfungsbezeichnung der FDA deutet auf eine potenziell signifikante Verbesserung der Behandlungseffektivität für SMA-Patienten hin.
- FDA granted Priority Review status, indicating potential significant treatment improvement
- First-in-class muscle-targeted treatment for SMA
- Positive Phase 3 SAPPHIRE trial results showing significant motor function improvement
- Dual regulatory submissions to FDA and EMA increase global market potential
- Commercial revenue generation delayed until 2025-2026
- Will require concurrent use with existing SMN-targeted treatments, increasing total treatment cost
Insights
The FDA's Priority Review designation for apitegromab represents a significant milestone for Scholar Rock, potentially accelerating their novel muscle-targeted SMA therapy toward commercialization. This designation, coupled with the EMA's validation of their Marketing Authorisation Application, substantially derisks SRRK's regulatory pathway.
What makes this development particularly notable is that apitegromab aims to be the first muscle-targeted treatment for SMA patients already receiving SMN-targeted therapies like nusinersen or risdiplam. This positions the drug as a complementary therapy rather than a direct competitor to existing treatments, potentially expanding Scholar Rock's addressable market.
The scientific rationale is compelling - while current SMN-targeted treatments address the underlying genetic cause of SMA, apitegromab's novel mechanism targets muscle function directly. The Phase 3 SAPPHIRE trial demonstrated statistically significant and clinically meaningful motor function improvements using the Hammersmith Functional Motor Scale Expanded, the gold standard assessment in SMA.
With the PDUFA date set for September 22, 2025, Scholar Rock has a clear timeline for potential U.S. market entry, followed by European commercialization in 2026. This provides a defined catalyst path for a company whose
The FDA's decision to grant Priority Review for apitegromab's BLA application significantly shortens the regulatory timeline from the standard 10-month review to approximately 6 months. This designation is only awarded when the FDA determines a therapy could offer substantial improvements in safety or effectiveness for serious conditions - signaling regulatory recognition of apitegromab's potential clinical value.
Importantly, Scholar Rock has achieved parallel regulatory progress in two major markets simultaneously, with both FDA acceptance and EMA validation occurring in close proximity. This coordinated global regulatory strategy is particularly advantageous, as it streamlines the path to worldwide commercialization and maximizes potential market exclusivity periods.
The regulatory submissions are supported by robust clinical evidence from the pivotal Phase 3 SAPPHIRE trial, which met its primary endpoint, alongside supportive data from earlier Phase 2 TOPAZ and long-term extension ONYX trials. This comprehensive data package strengthens the application considerably.
While approval remains contingent on thorough FDA review, the Priority Review status, combined with positive Phase 3 results and the first-in-class therapeutic potential, positions apitegromab favorably within the regulatory landscape. The established PDUFA date of September 22, 2025 provides a concrete timeline for potential market authorization, enabling Scholar Rock to advance commercial preparations with greater certainty.
- Apitegromab remains on track to be the first and only muscle-targeted treatment for people living with Spinal Muscular Atrophy
- FDA to review BLA application under priority review, with a PDUFA date of September 22, 2025
- Apitegromab Marketing Authorisation Application to the European Medicines Agency validated and under review
The Company has also submitted and received validation for its Marketing Authorisation Application (MAA) to the European Medicines Agency (EMA) for apitegromab for the treatment of SMA. Validation confirms that the application is complete and the formal review process by EMA can begin.
“We are delighted with the priority review designation for apitegromab, which is consistent with the potential of apitegromab to be a transformative therapy and the first muscle-targeted treatment for people living with SMA who continue to have decline in motor function despite receiving SMN-targeted treatments,” said Jay Backstrom, M.D., MPH, President and Chief Executive Officer of Scholar Rock. “In addition to the positive news from the FDA, we are pleased with the parallel acceptance of the MAA by the EMA and look forward to continue working with regulatory agencies to bring apitegromab to the SMA community as we prepare for our global commercial launch, starting with the U.S.”
Apitegromab’s regulatory submissions are based on positive efficacy and safety data from the pivotal Phase 3 SAPPHIRE trial (NCT05156320), for which the Company reported positive topline data in October 2024, as well as supportive data from the Phase 2 TOPAZ trial and long-term extension ONYX trial. The results from SAPPHIRE, including primary and secondary endpoint analyses, were featured in multiple clinical presentations at the 2025 Muscular Dystrophy Association (MDA) Clinical & Scientific Conference earlier this month.
SAPPHIRE achieved its primary endpoint, demonstrating a statistically significant and clinically meaningful motor function improvement in people with SMA receiving apitegromab and chronic dosing of SMN-targeted treatments (either nusinersen or risdiplam) versus placebo (nusinersen or risdiplam) as measured by the gold standard Hammersmith Functional Motor Scale Expanded (HFMSE).
In anticipation of potential regulatory approvals, Scholar Rock is planning for a
About Apitegromab
Apitegromab is an investigational fully human monoclonal antibody inhibiting myostatin activation by selectively binding the pro- and latent forms of myostatin in the skeletal muscle. It is the first muscle-targeted treatment candidate in spinal muscular atrophy (SMA) to demonstrate clinical success in a pivotal phase 3 clinical trial. Myostatin, a member of the TGFβ superfamily of growth factors, is expressed primarily by skeletal muscle cells, and the absence of its gene is associated with an increase in muscle mass and strength in multiple animal species, including humans. Scholar Rock believes that its highly selective targeting of pro- and latent forms of myostatin with apitegromab may lead to a clinically meaningful improvement in motor function in patients with SMA. The
About the Phase 3 SAPPHIRE Trial
SAPPHIRE was a randomized, double-blind, placebo-controlled Phase 3 clinical trial that evaluated the safety and efficacy of apitegromab in nonambulatory patients with Types 2 and 3 SMA who were receiving current standard of care (either nusinersen or risdiplam). SAPPHIRE enrolled 156 patients aged 2-12 years old in the main efficacy population. These patients were randomized 1:1:1 to receive either apitegromab 10 mg/kg, apitegromab 20 mg/kg, or placebo by intravenous (IV) infusion every 4 weeks for 12 months. An exploratory population including 32 patients aged 13-21 years old was also evaluated. These patients were randomized 2:1 to receive either apitegromab 20 mg/kg or placebo every 4 weeks for 12 months.
The SAPPHIRE trial met its primary endpoint for the main efficacy population with a statistically significant 1.8-point improvement (p=0.0192) based on apitegromab combined dose (10 mg/kg and 20 mg/kg) and standard of care (SOC) versus placebo and SOC as measured by the Hammersmith Functional Motor Scale-Expanded at week 52 (additional details in the topline data release).
About Scholar Rock
Scholar Rock is a biopharmaceutical company that discovers, develops, and delivers life-changing therapies for people with serious diseases that have high unmet need. As a global leader in the biology of the transforming growth factor beta (TGFβ) superfamily, the company is named for the visual resemblance of a scholar rock to protein structures. Over the past decade, Scholar Rock has created a pipeline with the potential to advance the standard of care for neuromuscular disease, cardiometabolic disorders, cancer, and other conditions where growth factor-targeted drugs can play a transformational role.
This commitment to unlocking fundamentally different therapeutic approaches is powered by broad application of a proprietary platform, which has developed novel monoclonal antibodies to modulate protein growth factors with extraordinary selectivity. By harnessing cutting-edge science in disease spaces that are historically under-addressed through traditional therapies, Scholar Rock works every day to create new possibilities for patients. Learn more about our approach at ScholarRock.com and follow @ScholarRock and on LinkedIn.
Scholar Rock® is a registered trademark of Scholar Rock, Inc.
Availability of Other Information About Scholar Rock
Investors and others should note that we communicate with our investors and the public using our company website www.scholarrock.com, including, but not limited to, company disclosures, investor presentations and FAQs, Securities and Exchange Commission filings, press releases, public conference call transcripts and webcast transcripts, as well as on X (formerly known as Twitter) and LinkedIn. The information that we post on our website or on X (formerly known as Twitter) or LinkedIn could be deemed to be material information. As a result, we encourage investors, the media and others interested to review the information that we post there on a regular basis. The contents of our website or social media shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended.
Forward-Looking Statements
This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements regarding Scholar Rock’s future expectations, plans and prospects, including without limitation, Scholar Rock’s expectations regarding its growth, strategy, progress and plans for apitegromab, including expectations relating to regulatory review and approval timelines and commercial launch timelines in the US and
View source version on businesswire.com: https://www.businesswire.com/news/home/20250325289782/en/
Scholar Rock:
Investors & Media
Rushmie Nofsinger
ir@scholarrock.com
media@scholarrock.com
857-259-5573
Source: Scholar Rock