Wave Life Sciences Announces Positive Data from FORWARD-53 Clinical Trial in DMD Including Significant Functional Benefit and Reversal of Muscle Damage after 48 Weeks of Dosing with WVE-N531
Wave Life Sciences (WVE) has announced positive 48-week data from its Phase 2 FORWARD-53 trial of WVE-N531, a treatment for Duchenne muscular dystrophy (DMD). The trial demonstrated a statistically significant 3.8-second improvement in Time-to-Rise versus natural history, marking the largest effect observed compared to any approved dystrophin restoration therapy.
Key findings include:
- Dystrophin expression stabilized at 7.8% average, with 88% of boys achieving above 5%
- 28.6% reduction in muscle fibrosis between weeks 24-48
- 50% decline in creatine kinase levels
- Significant improvements in muscle health markers
Following FDA feedback, Wave plans to file a New Drug Application in 2026 for accelerated approval. The company also intends to submit multiple clinical trial applications for other exon skipping programs in 2026, targeting a potential >$2.4 billion market opportunity in the United States.
Wave Life Sciences (WVE) ha annunciato dati positivi a 48 settimane dal suo studio di Fase 2 FORWARD-53 su WVE-N531, un trattamento per la distrofia muscolare di Duchenne (DMD). Lo studio ha mostrato un miglioramento significativo di 3,8 secondi nel Tempo di Alzata rispetto alla storia naturale, segnando l'effetto più grande osservato rispetto a qualsiasi terapia approvata per il ripristino della distrofina.
I risultati chiave includono:
- Espressione della distrofina stabilizzata al 7,8% in media, con l'88% dei ragazzi che ha raggiunto oltre il 5%
- Riduzione del 28,6% della fibrosi muscolare tra le settimane 24 e 48
- Declino del 50% nei livelli di creatina chinasi
- Miglioramenti significativi nei marcatori della salute muscolare
In seguito ai feedback della FDA, Wave prevede di presentare una Nuova Domanda di Farmaco nel 2026 per l'approvazione accelerata. L'azienda intende anche presentare diverse domande per studi clinici per altri programmi di skipping degli esoni nel 2026, mirando a un'opportunità di mercato potenziale superiore ai 2,4 miliardi di dollari negli Stati Uniti.
Wave Life Sciences (WVE) ha anunciado datos positivos a 48 semanas de su ensayo de Fase 2 FORWARD-53 de WVE-N531, un tratamiento para la distrofia muscular de Duchenne (DMD). El ensayo mostró una mejora estadísticamente significativa de 3.8 segundos en el Tiempo para Levantarse en comparación con la historia natural, marcando el efecto más grande observado en comparación con cualquier terapia aprobada de restauración de distrofina.
Los hallazgos clave incluyen:
- Expresión de distrofina estabilizada en un 7.8% en promedio, con el 88% de los niños alcanzando más del 5%
- Reducción del 28.6% en la fibrosis muscular entre las semanas 24 y 48
- Declive del 50% en los niveles de creatina quinasa
- Mejoras significativas en los marcadores de salud muscular
Tras la retroalimentación de la FDA, Wave planea presentar una Nueva Solicitud de Medicamento en 2026 para la aprobación acelerada. La empresa también tiene la intención de presentar múltiples solicitudes de ensayos clínicos para otros programas de omisión de exones en 2026, apuntando a una oportunidad de mercado potencial de más de 2.4 mil millones de dólares en los Estados Unidos.
웨이브 라이프 사이언스(WVE)가 두셴 근육 이영양증(DMD) 치료제 WVE-N531에 대한 48주 긍정적인 데이터를 발표했습니다. FORWARD-53 2상 시험에서 이 시험은 자연사에 비해 3.8초 개선을 보여주었으며, 이는 승인된 디스트로핀 복원 치료제와 비교했을 때 가장 큰 효과로 기록되었습니다.
주요 발견 사항은 다음과 같습니다:
- 디스트로핀 발현이 평균 7.8%로 안정화되었으며, 88%의 소년이 5% 이상을 달성했습니다.
- 24주에서 48주 사이에 근육 섬유증이 28.6% 감소했습니다.
- 크레아틴 키나제 수치가 50% 감소했습니다.
- 근육 건강 지표에서 유의미한 개선이 있었습니다.
FDA의 피드백에 따라 웨이브는 2026년에 가속 승인을 위한 신약 신청서를 제출할 계획입니다. 또한, 2026년에 다른 엑손 스키핑 프로그램에 대한 여러 임상 시험 신청서를 제출할 예정이며, 미국에서 24억 달러 이상의 시장 기회를 목표로 하고 있습니다.
Wave Life Sciences (WVE) a annoncé des données positives à 48 semaines de son essai de phase 2 FORWARD-53 sur WVE-N531, un traitement pour la dystrophie musculaire de Duchenne (DMD). L'essai a démontré une amélioration statistiquement significative de 3,8 secondes dans le Temps de Levée par rapport à l'histoire naturelle, marquant l'effet le plus important observé par rapport à toute thérapie de restauration de dystrophine approuvée.
Les principales conclusions incluent :
- Expression de la dystrophine stabilisée à 7,8% en moyenne, avec 88% des garçons atteignant plus de 5%
- Réduction de 28,6% de la fibrose musculaire entre les semaines 24 et 48
- Déclin de 50% des niveaux de créatine kinase
- Améliorations significatives des marqueurs de santé musculaire
Suite aux retours de la FDA, Wave prévoit de soumettre une Demande de Médicament Nouveau en 2026 pour une approbation accélérée. L'entreprise prévoit également de soumettre plusieurs demandes d'essais cliniques pour d'autres programmes de saut d'exon en 2026, visant une opportunité de marché potentielle de plus de 2,4 milliards de dollars aux États-Unis.
Wave Life Sciences (WVE) hat positive 48-Wochen-Daten aus seiner Phase-2-Studie FORWARD-53 zu WVE-N531, einer Behandlung für die Duchenne-Muskeldystrophie (DMD), bekannt gegeben. Die Studie zeigte eine statistisch signifikante Verbesserung von 3,8 Sekunden in der Zeit zum Aufstehen im Vergleich zur natürlichen Geschichte, was den größten beobachteten Effekt im Vergleich zu einer genehmigten Dystrophin-Wiederherstellungstherapie markiert.
Wichtige Ergebnisse umfassen:
- Dystrophin-Expression stabilisiert bei durchschnittlich 7,8%, wobei 88% der Jungen über 5% erreichen
- 28,6% Reduktion der Muskel-Fibrose zwischen Woche 24 und 48
- 50% Rückgang der Kreatinkinase-Werte
- Signifikante Verbesserungen bei den Markern der Muskelgesundheit
Nach dem Feedback der FDA plant Wave, 2026 einen Antrag auf beschleunigte Zulassung einzureichen. Das Unternehmen beabsichtigt auch, mehrere Anträge für klinische Studien zu anderen Exon-Skipping-Programmen im Jahr 2026 einzureichen, wobei ein potenzieller Markt von über 2,4 Milliarden Dollar in den Vereinigten Staaten angestrebt wird.
- Significant 3.8-second improvement in Time-to-Rise vs natural history (p<0.05)
- Strong dystrophin expression at 7.8% average, with 88% of patients above 5%
- Substantial 28.6% reduction in muscle fibrosis (p<0.01)
- 50% decrease in creatine kinase levels (p<0.001)
- FDA confirms accelerated approval pathway remains open
- >$2.4 billion US market opportunity across DMD programs
- NDA filing timeline extends to 2026, indicating a lengthy approval process
- Dystrophin expression showed slight decline from 24-week (9.0%) to 48-week (6.4%) measurements
- NSAA improvements (1.2-point) were not statistically significant
Insights
Wave Life Sciences' FORWARD-53 trial data represents a breakthrough moment in DMD treatment development. The 3.8-second improvement in Time-to-Rise versus natural history is both statistically significant (p<0.05) and clinically meaningful, substantially exceeding the minimal clinically important difference of 1.4 seconds. This effect size surpasses what we've seen with any approved dystrophin restoration therapy at 48 weeks.
Most remarkably, WVE-N531 demonstrates the first-ever reversal of muscle damage with exon skipping treatment, evidenced by a 28.6% reduction in fibrosis (p<0.01) and a 50% decrease in creatine kinase (p<0.001). These histological improvements align with the functional benefits observed, creating a coherent biological narrative from molecular correction to clinical outcome.
With 7.8% average dystrophin expression and 88% of boys achieving >5% dystrophin, WVE-N531 appears to stabilize at therapeutically relevant levels. The demonstrated 61-day tissue half-life supporting monthly dosing offers a significant advantage over current weekly administration requirements.
FDA's confirmation of the accelerated approval pathway and planned 2026 NDA submission puts Wave on a concrete commercialization trajectory. The company's exon skipping platform targeting exons 53, 52, 51, 45, and 44 could address ~40% of DMD patients, representing a $2.4B market opportunity in the US alone - a transformative potential for this mid-cap biotech.
These FORWARD-53 results mark a paradigm shift in exon skipping therapy for DMD. Beyond just increasing dystrophin, WVE-N531 demonstrates actual reversal of pathological processes - the transition from regenerative to mature muscle and significant reductions in inflammation, necrosis and fibrosis represent unprecedented tissue-level improvements.
The clinical translation of these biological effects is compelling. A 3.8-second TTR improvement might seem modest in isolation, but for DMD patients, this magnitude of functional preservation over 48 weeks could mean extended ambulatory ability and independence. The positive trends in NSAA further validate the functional impact.
The technology's apparent ability to reach both myofibers and myogenic stem cells addresses a critical limitation of earlier-generation exon skippers. By affecting the regenerative compartment, WVE-N531 may provide more durable treatment effects.
Monthly dosing would significantly reduce treatment burden compared to current weekly infusion regimens. This convenience factor, combined with the superior efficacy signal, positions WVE-N531 to potentially capture substantial market share from current treatments, including the 40-50% of eligible patients currently foregoing approved therapies due to efficacy and frequent dosing requirements.
Wave's PN backbone chemistry platform appears highly differentiated, with preclinical data showing superior cardiac and diaphragm penetration - crucial targets for meaningful long-term DMD outcomes that have been challenging to address with other modalities.
Statistically significant and clinically meaningful improvement of 3.8 seconds in Time-to-Rise vs. natural history with largest effect observed relative to any approved dystrophin restoration therapy at 48 weeks; additional functional benefits observed in other outcome measures including NSAA
First-ever demonstration of substantial improvements in muscle health with exon skipping – statistically significant reduction in fibrosis driven by decreases in inflammation and necrosis, coupled with transition from regenerative to mature muscle; decreases in creatine kinase and circulating inflammatory biomarkers
Dystrophin expression stabilized between 24 and 48 weeks and averaged
Following recent feedback from FDA, Wave intends to file a New Drug Application in 2026 for accelerated approval, with data to support monthly dosing at launch
Wave expects to file CTAs in 2026 for multiple DMD candidates for other exons, with preclinical data supporting a best-in-class exon skipping franchise
Wave to host investor conference call and webcast at 8:30 a.m. ET today
CAMBRIDGE, Mass., March 26, 2025 (GLOBE NEWSWIRE) -- Wave Life Sciences Ltd. (Nasdaq: WVE), a clinical-stage biotechnology company focused on unlocking the broad potential of RNA medicines to transform human health, today announced positive data from the Phase 2 FORWARD-53 trial of WVE-N531, which is an exon skipping oligonucleotide being investigated in boys with Duchenne muscular dystrophy (DMD) who are amenable to exon 53 skipping. The analysis was conducted after 48 weeks of treatment with 10 mg/kg WVE-N531 dosed every two weeks (Q2W).
FORWARD-53 achieved all trial goals, demonstrating sustained and industry-leading exon skipping, muscle concentrations and dystrophin restoration through 48 weeks and a 61-day tissue half-life that supports monthly dosing. WVE-N531 continues to be safe and well-tolerated.
Additionally, the data demonstrate substantial decreases in inflammation and necrosis, a statistically significant reversal of muscle fibrosis (
“Despite progress in Duchenne, there remains a significant unmet need for therapeutics that meaningfully impact disease progression. These data demonstrate a promising continuum from dystrophin restoration, to regeneration and maturation of muscle tissue, to functional improvement,” said Pat Furlong, founder and president of Parent Project Muscular Dystrophy. “Paired with monthly administration and a continued favorable safety profile, WVE-N531 represents a significant step forward – not just for individuals amenable to exon 53 skipping, but also for the broader exon skipping field. PPMD looks forward to working with Wave as they expediently bring WVE-N531 and their broader exon skipping pipeline to the Duchenne community.”
“As a clinician deeply involved in patient care and research in muscle diseases like Duchenne, I am encouraged by these data for WVE-N531 that show dystrophin restoration and several markers of improved muscle condition,” said Laurent Servais, MD, PhD, Professor of Paediatric Neuromuscular Disease at the University of Oxford and Principal Investigator in FORWARD-53. “To see a clinically meaningful and statistically significant difference on TTR versus natural history in a Phase 2 study is another encouraging finding. I am looking forward to the continued development of WVE-N531.”
Wave also announced today that the company met with the U.S. Food and Drug Administration (FDA) on WVE-N531 to discuss its interim 24-week data and initial plans for the confirmatory trial, where the Agency confirmed that the accelerated approval pathway using dystrophin expression as a surrogate endpoint remains open. Based on the FDA feedback and the 48-week data, Wave intends to file a New Drug Application (NDA) in 2026 for accelerated approval of WVE-N531. The NDA filing will be based on all FORWARD-53 data, which will include additional data to support monthly dosing. Furthermore, Wave will continue to engage the Agency with the new 48-week data, including functional outcomes, and its planned global confirmatory trial of WVE-N531.
“WVE-N531’s demonstrated ability to reach both myofibers and myogenic stem cells – the regenerative muscle cells – and sustain dystrophin restoration over time is impacting muscle health in ways never before seen in DMD,” said Paul Bolno, MD, MBA, President and Chief Executive Officer at Wave Life Sciences. “With these transformational data and feedback from FDA in hand, we are now moving toward our first NDA filing, which puts us on the path toward becoming a commercial company.”
Continued Dr. Bolno, “Most importantly, we are inspired by the opportunity ahead to deliver life-changing medicines to this community. We expect WVE-N531 to become the first-line treatment of choice for boys amenable to exon 53 skipping, including the 40
WVE-N531, as well as Wave’s programs for exons 52, 51, 45 and 44, leverage best-in-class oligonucleotide chemistry, including PN backbone chemistry and stereochemical control, enabling industry-leading muscle delivery and potency without requiring antibody or peptide conjugates. Preclinical data for Wave’s PN chemistry-containing exon skipping candidates have also demonstrated significantly higher dystrophin and drug concentrations in the heart and diaphragm versus skeletal muscle. Collectively, WVE-N531 plus Wave’s exon 52, 51, 45 and 44 programs would address ~
Detailed Results from FORWARD-53
Eleven boys amenable to exon 53 skipping (age 5-11; 10 ambulatory and 1 non-ambulatory) are enrolled in the ongoing open-label FORWARD-53 trial. Biopsy data are from eight of the 11 boys (all ambulatory and who had biopsies at 24 and 48 weeks) while safety and functional outcome assessments were available for all participants. All 11 boys have advanced to the extension portion of the study where they are now receiving monthly doses of WVE-N531.
Results after 48 weeks of 10 mg/kg dosing every two weeks include:
Safety and Tolerability
- WVE-N531 was safe and well-tolerated through 48 weeks. All treatment-related adverse events were mild to moderate in intensity.
- There were no Serious Adverse Events and no discontinuations due to any causes.
Results from Muscle Biopsies
- Dystrophin and exon skipping: Dystrophin expression stabilized between 24 and 48 weeks of dosing with a mean of
7.8% [95% CI: 5.4-10.3% ; 24-week dystrophin was9.0% (95% CI: 6.5-11.5% ) and 48-week dystrophin was6.4% (95% CI: 3.8-9.0% ); muscle content-adjusted dystrophin as measured by western blot]. The difference between the 24- and 48-week mean dystrophin measurements is within the established 30-35% inter-assay variability of the western blot, and consistency between these timepoints was confirmed with an orthogonal assay.88% of boys (7/8) achieved greater than5% average dystrophin between 24 and 48 weeks.- Mean exon skipping reached steady state at 6 weeks and was consistent through 48 weeks of dosing with a mean of
54% (95% CI: 46-63% ).
- Reversal of muscle damage: Participants showed significant and unprecedented improvements in multiple indicators of muscle health through 48 weeks, indicating a shift from dystrophic muscle towards healthy muscle. These data include:
- Decreases of the median muscle necrosis and inflammation scores from 2 to 1(representing mild damage) in muscle pathology.
- Decreases in markers of inflammation (MCP-1 and IL-6).
- A statistically significant decline in the amount of muscle fibrosis between 24 and 48 weeks (mean decrease of
28.6% , p<0.01). - A
50% decrease (p<0.001) in serum creatine kinase (CK), which occurred on top of a stable corticosteroid regimen. - Improved organization and uniformity of myofibers in muscle tissue.
- Decreases in number of stem cells and internalized nuclei, indicative of myofiber maturation between week 24 and 48.
Functional Assessments
- Benefits were seen in multiple functional assessments among WVE-N531-treated boys (n=10), including Time-to-Rise (TTR) and North Star Ambulatory Assessment (NSAA), compared with a matched exon 53 natural history control group (n=18).
- TTR showed a statistically significant and clinically meaningful 3.8-second difference (p<0.05) favoring WVE-N531 compared with natural history. The minimal clinically important difference (MCID) for TTR was 1.4 seconds, based on the baseline functional characteristics of boys in the study.
- NSAA showed positive trends favoring WVE-N531 relative to natural history (1.2-point improvement; not significant).
- Positive trends were also observed among WVE-N531-treated boys (n=11) on grip strength versus baseline.
Additional Upcoming Milestones Across Wave’s Clinical RNA Medicines Pipeline
Wave expects multiple additional milestones across its clinical pipeline of RNA medicines in 2025, including:
- WVE-006 (GalNAc-conjugated RNA editing oligonucleotide for alpha-1 antitrypsin deficiency): Wave expects to deliver 200 mg multi-dose data and 400 mg single-dose data from the Phase 1b/2a RestorAATion-2 trial in 2025.
- WVE-007 (GalNAc-conjugated siRNA for obesity, designed to silence INHBE mRNA): Wave expects to deliver clinical data from the Phase 1 INLIGHT trial in the second half of 2025, including safety, tolerability and biomarkers reflective of healthy weight loss.
- WVE-003 (allele-selective silencing for Huntington’s disease): Wave expects to submit an Investigational New Drug application in the second half of 2025 for its potentially registrational Phase 2/3 trial of WVE-003.
Investor Conference Call and Webcast
Wave will host an investor conference call today at 8:30 a.m. ET to review the FORWARD-53 data. A webcast of the conference call can be accessed by visiting “Investor Events” on the investor relations section of the Wave Life Sciences website: https://ir.wavelifesciences.com/events-publications/events. Analysts planning to participate during the Q&A portion of the live call can join the conference call at the audio-conferencing link here. Once registered, participants will receive the dial-in information. Following the live event, an archived version of the webcast will be available on the Wave Life Sciences website.
About WVE-N531
WVE-N531 is an exon skipping oligonucleotide being developed as a disease modifying treatment for boys with Duchenne muscular dystrophy amenable to exon 53 skipping. WVE-N531 was designed using Wave’s best-in-class oligonucleotide chemistry modifications, including PN backbone chemistry. WVE-N531 has received Orphan Drug Designation and Rare Pediatric Disease Designation from the U.S. Food & Drug Administration.
About Duchenne Muscular Dystrophy
Duchenne muscular dystrophy (DMD) is a fatal X-linked genetic neuromuscular disorder caused predominantly by out-of-frame deletions in the dystrophin gene, resulting in absent or defective dystrophin protein. Dystrophin protein is needed for normal muscle maintenance and operation. Because of the genetic mutations in DMD, the body cannot produce functional dystrophin, which results in progressive and irreversible loss of muscle function, including the heart and lungs. Worldwide, DMD affects approximately one in 5,000 newborn boys. Approximately
About Wave Life Sciences
Wave Life Sciences (Nasdaq: WVE) is a biotechnology company focused on unlocking the broad potential of RNA medicines to transform human health. Wave’s RNA medicines platform, PRISM®, combines multiple modalities, chemistry innovation and deep insights in human genetics to deliver scientific breakthroughs that treat both rare and common disorders. Its toolkit of RNA-targeting modalities includes editing, splicing, RNA interference and antisense silencing, providing Wave with unmatched capabilities for designing and sustainably delivering candidates that optimally address disease biology. Wave’s diversified pipeline includes clinical programs in Alpha-1 antitrypsin deficiency, Duchenne muscular dystrophy, Huntington’s disease, and obesity, as well as several preclinical programs utilizing the company’s broad RNA therapeutics toolkit. Driven by the calling to “Reimagine Possible”, Wave is leading the charge toward a world in which human potential is no longer hindered by the burden of disease. Wave is headquartered in Cambridge, MA. For more information on Wave’s science, pipeline and people, please visit www.wavelifesciences.com and follow Wave on X (formerly Twitter) and LinkedIn.
Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, our understanding of the anticipated therapeutic benefit of WVE-N531 as a therapy for DMD, and the broader exon skipping field; our understanding of the safety profile of WVE-N531; our plan and estimated timing to file an NDA for accelerated approval of WVE-N531, along with our expectations for commercialization; our expectations for WVE-N531 to become the first-line treatment of choice for boys amenable to exon 53 skipping; our plan to file CTA submissions for other exon skipping treatments and the potential for a best-in-class exon skipping franchise; addressable patient population estimates related to our therapeutic candidates; the potential commercial opportunities that our therapeutic candidates may address; anticipated milestones and anticipated benefits of our therapeutic candidates and pipeline compared to our competitors; and the potential benefits of PRISM, including our novel PN backbone chemistry modifications, and our stereopure oligonucleotides compared with stereorandom oligonucleotides. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release and actual results may differ materially from those indicated by these forward-looking statements as a result of these risks, uncertainties and important factors, including, without limitation, the risks and uncertainties described in the section entitled “Risk Factors” in Wave’s most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC), as amended, and in other filings Wave makes with the SEC from time to time. Wave undertakes no obligation to update the information contained in this press release to reflect subsequently occurring events or circumstances.
Investor Contact:
Kate Rausch
+1 617-949-4827
krausch@wavelifesci.com
Media Contact:
Alicia Suter
+1 617-949-4817
asuter@wavelifesci.com
DMD Community Contact:
Chelley Casey
+1 617-949-4830
ccasey@wavelifesci.com
