, ,

Sarepta announces top-line results for its investigational gene therapy

Sarepta Therapeutics announces top-line results for part 1 of study 102 evaluating SRP-9001, its investigational gene therapy for the treatment of Duchenne muscular dystrophy (DMD)

 

Jan. 7, 2021, >Original press release<

Sarepta Therapeutics, Inc. announced top-line results from Part 1 of Study SRP-9001 (Study 102), an ongoing, randomized, double-blind, placebo-controlled clinical trial to evaluate the safety, efficacy and tolerability of a single dose of SRP-9001 (rAAVrh74.MHCK7.micro-dystrophin) in 41 patients with Duchenne muscular dystrophy. SRP-9001 is an investigational gene transfer therapy intended to deliver its micro-dystrophin-encoding gene to muscle tissue for the targeted production of the micro-dystrophin protein.

Quickly

  • The study met the primary biological endpoint of micro-dystrophin protein expression at 12 weeks post-treatment, measured by western blot, in SRP-9001-treated participants versus placebo.
  • SRP-9001-treated participants showed an increase in NSAA total score compared to placebo at 48 weeks; however, the study did not achieve statistical significance on the primary functional endpoint of improvement in NSAA total score compared to placebo at 48 weeks post-treatment  
  • In the pre-specified analysis by age-group, by which the randomization was stratified, participants aged 4-5 years at the time of treatment with SRP-9001 demonstrated a statistically significant improvement in NSAA total score age-matched placebo cohort, achieving a 4.3-point improvement on NSAA at 48 weeks post-treatment from baseline.
  • No new safety signals were identified for SRP-9001, reinforcing the favourable safety profile observed to date.

Study 102 is ongoing and remains blinded to participants, investigators, site staff and sponsor staff with direct site interaction. All 41 participants have completed their Part 1, 48-week assessment and have entered the Part 2 crossover phase. Participants continue to be monitored for safety and will undergo another biopsy at week 12 in Part 2 to assess the expression and biological markers, in addition to longer-term assessments of functional outcomes.

 

Doug Ingram, president and chief executive officer, Sarepta – “Study 102 reinforces our confidence in the potentially transformative benefits of SRP-9001, including among other things, the fact that in the Study’s pre-specified analysis, the participants in the 4-5 age group robustly achieved a statistically significant and clinically meaningful improvement in NSAA over placebo, as predicted by our prior Study 101. For the entire population, while we saw separation at every time point between the active and placebo cohorts, Study 102 did not achieve statistical significance on the primary functional endpoint. In this regard, we are very disappointed that the randomization process resulted in a significant imbalance in baseline NSAA scores between the active and placebo cohorts of the participants ages 6-7, making the 6-7 age groups non-comparable and likely substantially contributing to the inability to achieve statistical significance. Study 102 remains blinded and we will analyze the functional results for all patients, including cross-over participants, once they have achieved the 48-week timepoint in Part 2. We have already enrolled and dosed 11 participants in Study 103, using our commercial process material, and we will have biomarker and safety results from that cohort in the second quarter. And very importantly, Study 102 has provided us with a wealth of information and insight which we will use to refine and complete the protocol for our upcoming trial using commercial process material. We intend to continue to move forward with diligence and urgency to generate the evidence necessary to bring SRP-9001 to waiting Duchenne patients around the world.”

 

*The NSAA is a 17-item rating scale used to measure functional motor abilities in ambulant children with Duchenne. It is used to monitor the disease’s progression and treatment effects, which makes it suitable as an endpoint in clinical trials for Duchenne.

About Duchenne Muscular Dystrophy

Duchenne muscular dystrophy (DMD) is a rare, fatal neuromuscular genetic disease in approximately one in every 3,500-5,000 males worldwide. DMD is caused by a change or mutation in the gene that encodes instructions for dystrophin. Symptoms of DMD usually appear in infants and toddlers. Affected children may experience developmental delays such as difficulty in walking, climbing stairs or standing from a sitting position. As the disease progresses, muscle weakness in the lower limbs spreads to the arms, neck and other areas. Most patients require full-time use of a wheelchair in their early teens and then progressively lose the ability to independently perform daily living activities such as using the restroom, bathing and feeding. Eventually, increasing breathing difficulty due to respiratory muscle dysfunction requires ventilation support, and cardiac dysfunction can lead to heart failure. The condition is universally fatal, and patients usually succumb to the disease in their twenties.

About SRP-9001 (rAAVrh74.MHCK7.micro-dystrophin)

SRP-9001 is an investigational gene transfer therapy intended to deliver the micro-dystrophin-encoding gene to muscle tissue for the targeted production of the micro-dystrophin protein. Sarepta is responsible for global development and manufacturing for SRP-9001 and plans to commercialize SRP-9001 in the United States upon receiving FDA approval. In December 2019, the Company announced a licensing agreement granting Roche the exclusive right to launch and commercialize SRP-9001 outside the United States. Sarepta has exclusive rights to the micro-dystrophin gene therapy program initially developed at the Abigail Wexner Research Institute at Nationwide Children’s Hospital.

About Sarepta

Sarepta Therapeutics, Inc., a biopharmaceutical company, is working to unlock the potential of RNA-based and gene therapy technologies to treat serious and life-threatening diseases like Duchenne muscular dystrophy (DMD). Sarepta’s primary focus is to advance new treatments for DMD rapidly.

More interesting links

, ,

Pfizer doses the first participant with Its gene therapy

Pfizer doses the first participant in phase 3 study for Duchenne muscular dystrophy (DMD) investigational gene therapy.

Pfizer Inc. announced that the first participant has been dosed in the Phase 3 CIFFREO study, which will evaluate the efficacy and safety of investigational gene therapy candidate PF-06939926 in boys with Duchenne muscular dystrophy (DMD). The CIFFREO trial is expected to enroll 99 ambulatory male patients, ages 4 through 7, across 55 clinical trial sites in 15 countries. The first patient was dosed at a site in Barcelona, Spain, on December 29, 2020.

CIFFREO is a Phase 3 global, multicenter, randomized, double-blind, placebo-controlled study. The study’s primary endpoint is the change from baseline in the North Star Ambulatory Assessment (NSAA) at one year. The NSAA is a 17-item test that measures gross motor function in boys with DMD. Regardless of the cohort, eligible participants are scheduled to receive the investigational gene therapy, either at the start of the study or after one year following treatment with placebo. Participants will be followed in the CIFFREO study for five years after treatment with the investigational gene therapy. Trial participants will receive commercially representative drug products manufactured at Pfizer’s state-of-the-art gene therapy manufacturing facility in Sanford, North Carolina.

 

Brenda Cooperstone, MD, Chief Development Officer, Rare Disease, Pfizer Global Product Development  – “The initiation of our pivotal trial, which is the first Phase 3 DMD gene therapy program to begin enrolling eligible participants, is an important milestone for the community because there are currently no approved disease-modifying treatment options available for all genetic forms of DMD. We believe our gene therapy candidate, if successful in Phase 3 and approved, has the potential to significantly improve the trajectory of DMD disease progression, and we are working with worldwide regulatory authorities to initiate this program as quickly as possible in other countries.”

 

PF-06939926 received Fast Track designation from the U.S. Food and Drug Administration in October 2020 (read article), as well as Orphan Drug and Rare Pediatric Disease designations in the United States in May 2017.

 

Silvia Avila, President, Duchenne Parent Project Spain  – “DMD is a progressive disorder, and patients and parents are waiting desperately for treatment options. The initiation of this study is an important step forward for this community, and it fuels us with hope that one day there may be treatment options for boys impacted with this devastating disease.”

 

DMD is an X-linked disease caused by mutations in the gene encoding dystrophin, which is needed for muscle membrane stability. Due to the lack of dystrophin, boys present with muscle degeneration that progressively worsens with age to the extent that they require wheelchair assistance when they are in their early teens, and unfortunately, usually succumb to their disease by the time they are in their late twenties. It is estimated that there are ~140,000 boys affected by DMD worldwide.

 

About CIFFREO

CIFFREO is a Phase 3 global, multi-center, randomized, double-blind, placebo-controlled study to assess the safety and efficacy of PF-06939926 investigational gene therapy in 99 ambulatory male participants, ages 4 through 7 years, with a genetic diagnosis of DMD who are on a stable daily regimen of glucocorticoids. The participants are negative for neutralizing antibodies against AAV9, as measured by the test done for the study as part of screening.

Eligible participants will be randomized into Cohort 1 or Cohort 2. Treatment will consist of two single intravenous infusions, one of PF-06939926 and one of placebo; approximately two thirds will be in Cohort 1 and receive PF-06939926 gene therapy at the start of the study and placebo after one year, and approximately one third will be in Cohort 2 and receive placebo at the start of the study and receive gene therapy after one year if they remain eligible. All participants will be followed in an open-label extension study for 5 years after treatment with the gene therapy. The study’s primary endpoint is a change from baseline at one year in the North Star Ambulatory Assessment (NSAA) total score. For more information, visit ciffreoduchennetrial.com.

 

About PF-06939926

PF-06939926 is an investigational recombinant adeno-associated virus serotype 9 (rAAV9) capsid carrying a shortened version of the human dystrophin gene (mini-dystrophin) under the control of a human muscle specific promotor. The rAAV9 capsid was chosen as the delivery vector because of its potential to target muscle tissue.

 

About Pfizer Rare Disease

Rare disease includes some of the most serious of all illnesses and impacts millions of patients worldwide, representing an opportunity to apply their knowledge and expertise to help make a significant impact on addressing unmet medical needs. The Pfizer focus on rare diseases builds on more than two decades of experience, a dedicated research unit focusing on rare disease, and a global portfolio of multiple medicines within several disease areas of focus, including rare hematologic, neurologic, cardiac and inherited metabolic disorders.

Pfizer Rare Disease combines pioneering science and a deep understanding of how diseases work with insights from innovative strategic collaborations with academic researchers, patients, and other companies to deliver transformative treatments and solutions. Pfizer innovates every day, leveraging its global footprint to accelerate the development and delivery of groundbreaking medicines and the hope of cures.

Click here to learn more about their Rare Disease portfolio and how Pfizer empowers patients, engage communities in their clinical development programs, and support programs that heighten disease awareness.

Positive clinical results from MOMENTUM

Sarepta Therapeutics announces positive clinical results from MOMENTUM, a phase 2 clinical trial of SRP-5051 in patients with Duchenne muscular dystrophy amenable to skipping exon 51.

Original press release > CAMBRIDGE, Mass., Dec. 07, 2020 (GLOBE NEWSWIRE)

Overview

  • Results from the multiple-ascending dose trial demonstrate proof-of-concept for SRP-5051 and support continued dose escalation.
  • At a total dose exposure approximately 10x lower than eteplirsen, SRP-5051 at 20 mg/kg showed enhanced tissue exposure, greater exon skipping, and greater dystrophin production with no negative renal or other laboratory findings.
  • These are the first clinical results from the Company’s peptide phosphorodiamidate morpholino oligomer (PPMO) technology, its next-generation chemistry platform.

Sarepta Therapeutics, Inc. announced results from the ongoing MOMENTUM study (Study 5051-201), a global Phase 2 clinical trial of SRP-5051, its next-generation treatment patients with Duchenne muscular dystrophy who are amenable to exon 51 skipping. This is the first clinical data from SRP-5051, an investigational treatment that uses Sarepta’s peptide phosphorodiamidate morpholino oligomer (PPMO) technology. PPMO technology includes a proprietary cell-penetrating peptide conjugated to Sarepta’s PMO backbone to increase cellular uptake of drug in the muscle tissue.

Results from Part A of the multi-ascending dose MOMENTUM study found consistently higher tissue exposure, exon-skipping and dystrophin production in patients taking a monthly dose of SRP-5051 compared to baseline. SRP-5051 was generally well-tolerated across all doses studied, with no clinical or laboratory findings reported. The results support continued dose escalation of SRP-5051 and further clinical development.

 

Doug Ingram, president and chief executive officer, Sarepta – “Sarepta’s PMO RNA technology is a vital platform on which we design therapies to treat those with Duchenne muscular dystrophy. Our next-generation PPMO technology is designed to increase cell penetration with the goal of offering significantly improved efficacy with more convenient dosing in Duchenne patients amenable to exon skipping. While patient numbers in each dose arm are small, the higher tissue concentration, exon skipping and dystrophin production in the 20 mg/kg dosing group were observed at an early 12-week time point and with far less cumulative drug exposure when compared to our current PMO technology. We know from our experience with PMOs that exon-skipping and dystrophin increase over time, and these results along with our preclinical experience, give us confidence as we dose escalate and continue to advance our PPMO exon-skipping therapies for Duchenne, including another five potential therapies that have already been designed, and explore the utility of the PPMO RNA platform for new disease indications.”

 

Compared to a control group of Duchenne patients from the PROMOVI study who received biopsies at 24 weeks after taking a weekly 30 mg/kg dose of eteplirsen, once-monthly dosing of SRP-5051 resulted in higher muscle concentration, increased exon-skipping and dystrophin at 12 weeks. A dose-dependent increase in exon-skipping and dystrophin was observed, with patients in the 20 mg/kg dose group of SRP-5051 seeing a 1.6-fold increase in exon skipping (n=4) and a 5-fold increase in the % of normal dystrophin (n=2) when compared to the group taking eteplirsen at 24 weeks.

The incidence of adverse events in the MOMENTUM study was similar across all dosed cohorts and does not suggest dose dependency. One treatment-emergent event, unrelated to the study drug, occurred in the 4 mg/kg dose group. No clinical or laboratory findings were observed. Full results will be presented at a future medical meeting.

About MOMENTUM (SRP-5051-201)

MOMENTUM is a multi-arm, ascending dose study designed to identify the maximum tolerated dose of SRP-5051. Informed by Study 5051-101, a single ascending dose study of SRP-5051, patients in the MOMENTUM study will receive monthly intravenous (IV) infusions of SRP-5051, starting at 4 mg/kg and ascending to 40 mg/kg. The study will enroll up to 24 patients, both ambulant and non-ambulant, between the ages of 7 to 21 at sites in the U.S., Canada, Australia and the European Union. The primary endpoint is safety, and secondary and exploratory endpoints include exon-skipping, dystrophin expression and tissue concentration. All patients will undergo a muscle biopsy at baseline and 12 weeks in Part A and baseline and 24 weeks in Part B. More information can be found on www.clinicaltrials.gov.

About SRP-5051

SRP-5051 uses Sarepta’s PPMO chemistry and exon-skipping technology to skip exon 51 of the dystrophin gene. SRP-5051 is designed to bind to exon 51 of dystrophin pre-mRNA, resulting in the exclusion of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 51 skipping. Exon skipping is intended to allow for the production of an internally truncated dystrophin protein. PPMO is Sarepta’s next-generation chemistry platform designed around a proprietary cell-penetrating peptide conjugated to the PMO backbone, intending to increase tissue penetration, increasing exon skipping and significantly increasing dystrophin production. Around 13% of DMD patients have mutations that make them amenable to skipping exon 51. If successful, the PPMO offers the potential for improved efficacy and less frequent dosing for patients.

What is exon skipping?

Mutations in the dystrophin gene are one cause of DMD. Most commonly, one or more exons (a portion of a gene) are missing, and the remaining exons don’t fit together correctly. (Think of a zipper that doesn’t work properly because teeth are missing.)

Because of this error, cells cannot make the dystrophin protein that muscles need to work properly. Without it, muscle cells become damaged and, over time, are replaced with scar tissue and fat.

To fix the broken genetic machinery, scientists are developing drugs that skip over parts containing missing or defective exons. In this way, the machinery can produce a less imperfect dystrophin protein, improving muscle function in children with exon mutations. > Pipeline exon-skipping

About eteplirsen (EXONDYS 51®)

This treatment uses a specific exon-skipping technique to jump over a portion of genetic machinery that does not produce dystrophin in children with DMD. More specifically, this injectable drug triggers the skipping of exon 51, which occurs in 13% of children with DMD. It aims to restore the machinery’s ability to read genetic code to produce a shortened form of dystrophin that works in some children with DMD. The production of this shortened form of dystrophin may delay muscle degeneration and the progression of this devastating, rare disease in some children.

In September 2016, the U.S. FDA granted unprecedented, accelerated marketing approval to eteplirsen to treat children with DMD who are amenable to exon 51 skipping. However, since clinical benefit has not been established, continued approval depends on whether the outcome of ongoing clinical trials can confirm its benefits in patients with DMD.

What about Canada?

At this moment, eteplirsen is not available in Canada. We hope that shortly, Sarepta Therapeutics will file a request for marketing approval with Health Canada.

About DMD

Duchenne muscular dystrophy (DMD) is a disease that almost exclusively affects boys and whose incidence is 1 in 3,500. It is sporadic that Duchenne muscular dystrophy (DMD) will affect girls. Those affected are usually diagnosed around five, but symptoms may be visible from early childhood. It is a degenerative disease of the muscles caused by a genetic mutation. The Duchenne muscular dystrophy (DMD) – for which no treatment is currently available – directly affects skeletal muscles. Without treatment, the consequences of the disease are dire for those afflicted and their families.

About Sarepta Therapeutics

The Company has built an impressive position in Duchenne muscular dystrophy (DMD) and gene therapies for limb-girdle muscular dystrophies (LGMDs), mucopolysaccharidosis type IIIA, Charcot-Marie-Tooth (CMT), and other CNS-related disorders, with more than 40 programs in various stages of development. The Company’s programs and research focus span several therapeutic modalities, including RNA, gene therapy and gene editing. For more information, please visit www.sarepta.com or follow them on TwitterLinkedInInstagram and Facebook.

,

Sustained functional improvement with micro-dystrophin gene treatment

Sarepta Therapeutics reports sustained functional improvement two years after treatment with SRP-9001, its investigational micro-dystrophin gene therapy for Duchenne muscular dystrophy.

  • Results demonstrate continued safety and tolerability of SRP-9001 in four participants with Duchenne.
  • All four participants demonstrated improvements in The North Star Ambulatory Assessment (NSAA)* scores than baseline and showed a durable response two years after the administration of SRP-9001.

Original press release > CAMBRIDGE, Mass., Sept. 28, 2020 (GLOBE NEWSWIRE)

Sarepta Therapeutics, Inc., announced two-year follow up results from four Duchenne muscular dystrophy (DMD) clinical trial participants who received SRP-9001. SRP-9001 is an investigational gene transfer therapy intended to deliver its micro-dystrophin-encoding gene to muscle tissue for the targeted production of micro-dystrophin protein. Results presented at the 25th International Annual Congress of the World Muscle Society demonstrated that two years after a one-time infusion of SRP-9001, trial participants exhibited a mean 7.0 point improvement on the North Star Ambulatory Assessment (NSAA) compared to baseline.

 

Doug Ingram, President and CEO, Sarepta – “We continue to be encouraged by the safety profile and enduring treatment response that we have seen to date with SRP-9001 gene transfer therapy. The consistent results and functional improvements sustained over two years give us added confidence as we prepare for the results from Study 102, our randomized, double-blind, placebo-controlled study of SRP-9001. We continue to work with urgency to bring this potentially transformative treatment to patients as quickly as possible.”

 

In the open-label trial, known as Study 101, four ambulatory participants between the ages of 4 and 7 were treated with an infusion of SRP-9001. The therapy was well-tolerated in all participants over the two years. All adverse events were considered mild or moderate and occurred within 90 days of treatment. There were no serious adverse events or evidence of complement activation.

At day 90, all participants had confirmed vector transduction and showed functional improvement on the NSAA scale and reduced creatine kinase (CK) levels. Participants demonstrated a mean increase of 5.5 points from baseline one year after treatment and 7.0 points from baseline two years after treatment. The NSAA is a validated scale developed to measure functional motor abilities in ambulant children with Duchenne, with scores ranging from 0-34.

As previously disclosed, micro-dystrophin protein levels for participants in Study 101 were as follows: 12-weeks post-infusion, a mean of 81.2% muscle fibres expressing micro-dystrophin with a mean intensity at the sarcolemma by immunohistochemistry of 96% compared to normal biopsies. Adjusted for fat and fibrotic tissue, western blot showed a mean expression of 95.8%.

About SRP-9001

SRP-9001 is an investigational gene transfer therapy intended to deliver the micro-dystrophin-encoding gene to muscle tissue for the targeted production of the micro-dystrophin protein. Sarepta is responsible for global development and manufacturing for SRP-9001 and plans to commercialize SRP-9001 in the United States. In December 2019, the Company announced a licensing agreement granting Roche the exclusive right to launch and commercialize SRP-9001 outside the United States. Sarepta has exclusive rights to the micro-dystrophin gene therapy program initially developed at the Abigail Wexner Research Institute at Nationwide Children’s Hospital.

About Duchenne Muscular Dystrophy

Duchenne muscular dystrophy (DMD) is a rare, fatal neuromuscular genetic disease in approximately one in every 3,500-5,000 males worldwide. DMD is caused by a change or mutation in the gene that encodes instructions for dystrophin. Symptoms of DMD usually appear in infants and toddlers. Affected children may experience developmental delays such as difficulty in walking, climbing stairs or standing from a sitting position. As the disease progresses, muscle weakness in the lower limbs spreads to the arms, neck and other areas. Most patients require full-time use of a wheelchair in their early teens and then progressively lose the ability to independently perform activities of daily living such as using the restroom, bathing and feeding. Eventually, increasing difficulty in breathing due to respiratory muscle dysfunction requires ventilation support, and cardiac dysfunction can lead to heart failure. The condition is universally fatal, and patients usually succumb to the disease in their twenties.

About Sarepta Therapeutics

Sarepta Therapeutics, Inc., a biopharmaceutical company, is working to unlock the potential of RNA-based and gene therapy technologies to treat severe and life-threatening diseases like Duchenne muscular dystrophy (DMD). Sarepta’s primary focus is to advance new therapies for DMD rapidly. Learn more here.

La Force DMD / Sarepta Therapeutics / Grounded in the DMD community.

The North Star Ambulatory Assessment (NSAA)

The North Star Ambulatory Assessment (NSAA) is a 17-item rating scale that is used to measure functional motor abilities in ambulant children with Duchenne Muscular Dystrophy (DMD). It is usually used to monitor the progression of the disease and treatment effects.

,

Worldwide rights of Vamorolone for DMD

Santhera exercises option to obtain worldwide rights of Vamorolone for Duchenne muscular dystrophy (DMD) and All Other Indications

La Force is happy to share this press release provided by Santhera Pharmaceuticals > Pratteln, Switzerland, and Rockville, MD, USA, September 2, 2020

 

Santhera Pharmaceuticals announces that it has signed agreements with Idorsia and ReveraGen BioPharma Inc., making Santhera a direct license holder of vamorolone. Under the agreements, Santhera has obtained an exclusive license from ReveraGen, the originator of vamorolone, for all indications worldwide. The agreements create additional value for Santhera through the transfer of rights for the previously excluded markets Japan and South Korea, the right to grant sublicenses and a share in the expected Priority Review Voucher. Vamorolone, a first-in-class anti-inflammatory drug candidate with a novel mode of action, is currently being investigated in the pivotal Phase 2b VISION-DMD study in patients with Duchenne muscular dystrophy (DMD) by originator ReveraGen and completion of study enrollment is expected shortly.

 

Quickly

  • The license gives Santhera worldwide rights to vamorolone, now also including the major markets Japan and South Korea, and paves the way for partnering in additional indications
  • Agreements with Idorsia and ReveraGen give Santhera immediate control over vamorolone and defer milestone-related payments
  • The transaction establishes Santhera as a leading company in rare neuromuscular diseases with two late-stage assets addressing the medical need of DMD patients from early to late disease stages

 

Dario Eklund, Chief Executive Officer of Santhera –  “We are excited about the license transfer of vamorolone to Santhera. Our decision to exercise the option now has been driven by a combination of factors including the availability of encouraging clinical efficacy and safety data with vamorolone, enhanced deal terms and the ability to gain full control over the asset. We look forward to contributing our significant expertise to advancing vamorolone in DMD and exploring additional business development opportunities. We believe that having two promising, complementary, late-stage assets for DMD in our pipeline will enable increased access to potentially transformative treatments for a wider patient population. We are grateful to Idorsia, our anchor shareholder, for enabling early access to the license, highlighting its confidence in Santhera as the best-suited company to bring vamorolone to patients.”

 

Eric Hoffman, Ph.D., Vice President of Research of ReveraGen BioPharma –  “We are delighted about the revised contractual arrangement and being able to work directly with Santhera as the licensee for vamorolone. Santhera’s experience in both development of DMD drug candidates and the commercialization of a rare disease product positions it well to bring vamorolone to patients. Our work to date clearly shows that vamorolone not only holds the potential to become a new standard of care for patients with DMD but also could benefit patients in a number of other inflammatory diseases.”

 

With Puldysa® and vamorolone, Santhera is building a complementary DMD product portfolio.

Vamorolone is in development for young DMD patients requiring an anti-inflammatory, muscle strengthening treatment before the onset of respiratory function decline. Based on the cumulative knowledge obtained from extensive non-clinical studies and Phase 1 and Phase 2a clinical studies with vamorolone, ReveraGen is currently conducting the pivotal Phase 2b VISION-DMD trial and anticipates full study enrollment shortly. Subject to positive results of the first 6-month treatment period, now expected in the second quarter of 2021 due to delays caused by the Covid-19 pandemic, this would pave the way for regulatory submission to the US FDA in the fourth quarter of 2021.

Puldysa (idebenone) for patients with DMD in respiratory function decline who are not taking glucocorticoids is currently under regulatory review in Europe for which Santhera anticipates a CHMP opinion in the fourth quarter of 2020. The Company expects the combination of vamorolone and Puldysa to address the medical needs of DMD patients, from early to late disease stages, irrespective of age, underlying dystrophin mutation or ambulatory status. 

Vamorolone and Puldysa have been granted Orphan Drug status in the US and Europe, Fast Track and Rare Pediatric Disease designations by the US FDA and Promising Innovative Medicine (PIM) status by the UK MHRA. In the UK, Puldysa is available to patients through the Early Access to Medicines Scheme (EAMS).

 

About Vamorolone

Vamorolone is a first-in-class anti-inflammatory drug candidate with a novel mode of action Vamorolone is a first-in-class drug candidate that binds to the same receptors as corticosteroids but modifies the downstream activity of the receptors. This has the potential to ‘dissociate’ efficacy from typical steroid safety concerns and, therefore, could emerge as a valuable alternative to corticosteroids, the current standard of care in children and adolescent patients with DMD. There is a clear unmet medical need in this patient group as high dose corticosteroids have significant systemic side effects that detract from the patient’s quality of life. Vamorolone is being developed by US-based ReveraGen BioPharma Inc. with participation in funding and design of studies by several international non-profit foundations, the US National Institutes of Health, the US Department of Defense and the European Commission’s Horizon 2020 program.

 

About Santhera

Santhera Pharmaceuticals is a Swiss specialty pharmaceutical company focused on the development and commercialization of innovative medicines for rare neuromuscular and pulmonary diseases with a high unmet medical need. Santhera is building Duchenne muscular dystrophy (DMD) product portfolio to treat patients irrespective of causative mutations, disease stage or age. A marketing authorization application for Puldysa® (idebenone) is currently under review by the European Medicines Agency. Santhera has an option to license vamorolone; a first-in-class dissociative steroid presently investigated in a pivotal study in patients with DMD to replace standard corticosteroids. Santhera out-licensed ex-North American rights to its first approved product; for further information, please visit www.santhera.com.

 

About ReveraGen BioPharma

ReveraGen was founded in 2008 to develop first-in-class dissociative steroidal drugs for Duchenne muscular dystrophy and other chronic inflammatory disorders. The development of ReveraGen’s lead compound, vamorolone, has been supported through partnerships with foundations worldwide, including Muscular Dystrophy Association USAParent Project Muscular DystrophyFoundation to Eradicate DuchenneSave Our SonsJoiningJackAction DuchenneCureDuchenne, Ryan’s Quest, Alex’s WishDuchenneUK, Pietro’s Fight, Michael’s Cause, and Duchenne Research Fund. ReveraGen has also received generous support from the US Department of Defense CDMRP, National Institutes of Health (NCATS, NINDS, NIAMS), and European Commission (Horizons 2020).

 

More links

,

FDA Acceptance of Casimersen

Sarepta Therapeutics Announces FDA Acceptance of Casimersen (SRP-4045) New Drug Application for Patients with Duchenne Muscular Dystrophy Amenable to Skipping Exon 45

Original press release, CAMBRIDGE, Mass., Aug. 25, 2020 (GLOBE NEWSWIRE)

Quickly

  • FDA grants Priority Review Status and sets regulatory action date for February 25, 2021
  • FDA has indicated it does not currently plan to hold an advisory committee meeting to discuss the application
  • Received FDA’s conditional approval of AMONDYS 45™ as a brand name for casimersen
  • Casimersen has been studied for the treatment of exon 45 amenable patients, approximately eight percent of patients with Duchenne

About the FDA Acceptance of Casimersen

Sarepta Therapeutics, Inc. announced the U.S. Food and Drug Administration (FDA) has accepted the Company’s New Drug Application (NDA) seeking accelerated approval for casimersen (SRP-4045) and provided a regulatory action date of February 25, 2021. The FDA has indicated it does not currently plan to hold an advisory committee to discuss the application. In addition, the Company has received conditional approval of AMONDYS 45 as the brand name for casimersen. Casimersen, a phosphorodiamidate morpholino oligomer (PMO), is engineered to treat patients with Duchenne muscular dystrophy (DMD) who have genetic mutations that are amenable to skipping exon 45 of the dystrophin gene.

The Company submitted its NDA filing in June 2020 and requested priority review, which the FDA granted. The NDA included data from the casimersen arm of the ESSENCE study (also known as Study 4045-301), a global, randomized, double-blind, placebo-controlled Phase 3 study evaluating the efficacy and safety of casimersen in patients amenable to skipping exons 45. An interim analysis from ESSENCE demonstrated a statistically significant increase in dystrophin production as measured by western blot in patients who received casimersen compared to baseline and placebo. The study is ongoing and remains blinded to collect additional efficacy and safety data.

Doug Ingram, president and chief executive officer, Sarepta Therapeutics – “The FDA’s acceptance of our NDA for casimersen is an important step toward our goal of rapidly bringing therapies to patients living with Duchenne muscular dystrophy. If it is approved, casimersen, our third exon-skipping medicine in our PMO RNA-based platform, will offer treatment to the 8% of Duchenne patients who are amenable to exon 45 skipping.”

About Casimersen

Casimersen uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to skip exon 45 of the Duchenne gene. Casimersen is designed to bind to exon 45 of dystrophin pre-mRNA, resulting in exclusion, or “skipping,” of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 45 skipping. Exon skipping is intended to allow for the production of an internally truncated dystrophin protein. Read more here.

About the ESSENCE Study

The ESSENCE study is a double-blind, placebo-controlled, multi-center Phase 3 study evaluating the efficacy and safety of casimersen (SRP-4045) and golodirsen (SRP-4053, approved as VYONDYS 53™). Eligible patients with out-of-frame deletion mutations amenable to exon 45 or 53 skippings are randomized to receive once-weekly intravenous (IV) infusions of 30 mg/kg of SRP-4045 or 30 mg/kg of SRP-4053, respectively (combined-active group) or placebo for up to 96 weeks. This is followed by an open-label extension period in which all patients will receive open-label active treatment for 48 weeks, up to week 144 of the study.

Clinical efficacy is being assessed at regularly scheduled study visits, including functional tests such as the six-minute walk test (6MWT). All patients undergo a muscle biopsy at baseline and will undergo a second muscle biopsy either at week 48 or week 96.

Safety is being assessed through the collection of adverse events, laboratory tests, electrocardiograms (ECGs), echocardiograms (ECHOs), vital signs, and physical examinations throughout the study.

About Sarepta Therapeutics

The Company has built an impressive position in Duchenne muscular dystrophy (DMD) and in gene therapies for limb-girdle muscular dystrophies (LGMDs), mucopolysaccharidosis type IIIA, Charcot-Marie-Tooth (CMT), and other CNS-related disorders, with more than 40 programs in various stages of development. The Company’s programs and research focus span several therapeutic modalities, including RNA, gene therapy and gene editing. For more information, please visit www.sarepta.com or follow them on TwitterLinkedInInstagram and Facebook.

More about DMD

DMD is caused by genetic mutations that prevent dystrophin production. Patients with DMD experience progressive and irreversible muscle loss with symptoms appearing as early as two years of age. 

Duchenne muscular dystrophy occurs primarily in males. Early signs of DMD may include delayed ability to sit, stand or walk. There is a progressive loss of mobility, and by adolescence, patients with DMD may require the use of a wheelchair. Cardiac and respiratory muscle problems begin in the teenage years and lead to serious, life-threatening complications. Read more here.

, ,

Viltolarsen, exon 53 skipping therapy, approved

N.S. Pharma’s VILTEPSO™ (viltolarsen) injection now FDA-Approved in the U.S. for the treatment of Duchenne muscular dystrophy in patients amenable to exon 53 skipping therapy.

 

  • Patients taking VILTEPSO showed an increase in dystrophin expression to an average of 5.9% of normal after 20-24 weeks of treatment.
  • Overall, in a pivotal study of VILTEPSO, 100% of patients showed an increase in dystrophin levels after treatment, and 88% of patients showed dystrophin levels of 3% of average or higher.

Press release > PARAMUS, NJ: August 12, 2020 – N.S. Pharma, Inc.

 

N.S. Pharma announced that the U.S. Food & Drug Administration (FDA) has approved VILTEPSO™ (viltolarsen) injection for patients with Duchenne muscular dystrophy (DMD) who are amenable to exon 53 skipping therapy. VILTEPSO received an Accelerated Approval by the FDA based on an increase in dystrophin, an essential protein for supporting muscle health. Since a lack of dystrophin is the underlying cause of DMD, increasing dystrophin as much and as early as possible is a key goal in the treatment of DMD. VILTEPSO is the first and only exon 53 skipping therapy to demonstrate an increase in dystrophin in children as young as four years old. The continued approval of VILTEPSO may be contingent on confirmation of a clinical benefit in the Phase 3 confirmatory trial.

 

More about the study

The VILTEPSO New Drug Application (NDA) submission included results from a Phase 2, a two-period study in patients aged four to less than ten years of age conducted in North America (Study 1, N=16) and a multicenter, open-label study in boys five to less than 18 years of age conducted in Japan (Study 2, N=16).

In Study 1, of those patients who received the recommended dose of 80 mg/kg/wk (N=8), 100% of patients (8/8) showed an increase in dystrophin levels after treatment with VILTEPSO and 88% of patients (7/8) showed dystrophin levels of 3% or greater than normal. Overall, after 20-24 weeks of treatment, a mean increase in dystrophin expression to nearly 6% of normal was observed with VILTEPSO (80 mg/kg/wk) versus 0.6% at baseline. The most common side effects of VILTEPSO included upper respiratory tract infection, injection site reaction, cough and fever.

 

Vamshi Rao, MD, Ann & Robert H. Lurie Children’s Hospital of Chicago – “For decades, neurologists who treat DMD have hoped for the discovery of therapies capable of significantly improving dystrophin production, and the magnitude of dystrophin increases observed with VILTEPSO are impressive. The approval of VILTEPSO is an exciting development for DMD patients amenable to exon 53 skipping therapy and may rapidly become a foundational treatment for these patients.”

 

  • In clinical studies, no patients experienced kidney toxicity during treatment with VILTEPSO. However, kidney toxicity from drugs like VILTEPSO may be possible. Your doctor may monitor the health of your kidneys before starting and during treatment with VILTEPSO.
  • The most common side effects of VILTEPSO included upper respiratory tract infection, injection site reaction, cough and fever.
  • For additional safety information, please see the full Prescribing Information.

N.S. Pharma continues to study the safety and efficacy of VILTEPSO in the confirmatory Phase 3 RACER53 trial. This study was initiated in October 2019 and is currently enrolling. The purpose of this Phase 3 trial is to confirm the clinical findings that were submitted under the Accelerated Approval pathway.

 

About VILTEPSO™ (viltolarsen) injection

Before its approval in the U.S., VILTEPSO was granted Priority Review as well as Rare Pediatric Disease, Orphan Drug and Fast Track Designations. In March 2020, VILTEPSO was approved in Japan for the treatment of patients with DMD who are amenable to exon 53 skipping therapy. Before its approval in Japan, VILTEPSO was granted the SAKIGAKE designation, Orphan Drug designation, and designation of Conditional Early Approval System.

VILTEPSO is indicated for the treatment of Duchenne muscular dystrophy (DMD) in patients who have a confirmed mutation of the DMD gene that is amenable to exon 53 skipping. This indication is approved under Accelerated Approval based on an increase in dystrophin production in skeletal muscle observed in patients treated with VILTEPSO. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial. It is an infusion that doctors administer into the bloodstream.

 

How Viltolarsen works

Viltolarsen contains an artificial piece of mRNA that masks exon 53, causing cells to “skip” this exon when they are making mature mRNA. This skip restores the so-called “reading frame” of the mRNA molecule. In other words, it ensures that the remaining exons fit together again, allowing a cell’s protein-making machinery to synthesize a shorter but working dystrophin protein.

Because viltolarsen is specific to exon 53, the treatment is effective only in those DMD patients who have a mutation that is amenable to exon 53 skipping. Thanks to Muscular Dystrophy News Today for this description.

 

N.S. Pharma

NS Pharma, Inc. is a wholly-owned subsidiary of Nippon Shinyaku Co., Ltd. For more information, please visit www.nspharma.com. N.S. Pharma is a registered trademark of the Nippon Shinyaku group of companies.

N.S. Pharma will provide families, physicians and healthcare professionals dedicated and individualized resources every step of the way through the N.S. Support program. N.S. Pharma will be hosting a series of webinars on the comprehensive care coordination available through N.S. Support. Follow them on LinkedIn and Twitter for information and registration for upcoming webinars.

 

Tsugio Tanaka, President, NS Pharma, Inc. – “On behalf of NS Pharma and Nippon Shinyaku, I would like to express our deepest gratitude to the families and physicians who participated in our clinical trials and made today’s approval possible. We are proud to now offer an important new treatment option to help address the significant unmet needs caused by this devastating disease.”

 

More about DMD

DMD is caused by genetic mutations that prevent dystrophin production. Patients with DMD experience progressive and irreversible muscle loss with symptoms appearing as early as two years of age. 

Duchenne muscular dystrophy occurs primarily in males. Early signs of DMD may include delayed ability to sit, stand or walk. There is a progressive loss of mobility, and by adolescence, patients with DMD may require the use of a wheelchair. Cardiac and respiratory muscle problems begin in the teenage years and lead to serious, life-threatening complications. Read more here.

,

Translarna: Update for Non-Ambulatory Patients with DMD

PTC Therapeutics Announces that The Committee for Medicinal Products for Human Use (CHMP) Recommendation of Translarna ™ (ataluren) Label Update for Non-Ambulatory Patients with Duchenne Muscular Dystrophy

Original press release > SOUTH PLAINFIELD, N.J., June 29, 2020,/PRNewswire/ — PTC Therapeutics, Inc.

 

PTC Therapeutics, Inc. announced that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has recommended by a majority of votes to remove the statement “efficacy has not been demonstrated in non-ambulatory patients” from the Summary of product characteristics (SmPC) for Translarna™ (ataluren). This label change enables healthcare professionals to use their clinical judgement to make treatment decisions for their patients on Translarna who have lost ambulation. The change also should support reimbursement agencies granting continued access to Translarna for patients who become non-ambulatory during their treatment. The CHMP’s positive opinion is subject to final approval by the European Commission, which is typically granted in a two-month time frame.

 

Stuart W. Peltz, Ph.D., Chief Executive Officer of PTC Therapeutics – “We are excited to see that the CHMP adopted the positive opinion for this label modification allowing patients who become non-ambulatory to continue to use Translarna. All nonsense mutation Duchenne patients should be able to benefit from continued Translarna use, ensuring they have the best chance of preserving muscle function for as long as possible.”

 

Translarna is the only treatment for the underlying cause of Duchenne caused by a nonsense mutation and works by restoring dystrophin production. The EMA approves it for the treatment of nonsense mutation Duchenne muscular dystrophy (nmDMD) in ambulatory patients aged two years and older. Real-world evidence and clinical trials have demonstrated the potential of Translarna to slow disease progression and improve outcomes before and beyond the loss of ambulation:

  • In a long-term, open-label extension study (Study 019), Translarna preserved lung function in non-ambulatory patients for an additional four years compared with patients treated with standard of care from a long-term natural history study (the Cooperative International Neuromuscular Research Group (CINRG) natural history database of Duchenne patients).
  • Data from the STRIDE Registry, the first international drug registry for Duchenne patients receiving Translarna, demonstrated that boys treated with Translarna and standard of care (SoC) preserved the ability to walk for years longer than those on SoC alone, as well as experienced a slower decline in lung function.
  • Children treated with Translarna in a real-world setting as part of the STRIDE registry were able to walk independently for an additional 3.5 years compared with a propensity-score matched cohort in the CINRG natural history study, with a median age at loss of ambulation of 14.5 years and 11 years, respectively (72% relative risk reduction).
  • There was a trend toward a delay in the age at the decline in pulmonary function in STRIDE patients compared with CINRG patients, as measured by predicted FVC < 50% and FVC < 1 L.4
  • These data suggest that treatment with ataluren, in addition to SoC, may delay loss of ambulation, as well as pulmonary functional decline, in patients with nmDMD.
  •  View the original content here.

About Translarna (ataluren)

Translarna (ataluren), discovered and developed by PTC Therapeutics, Inc., is a protein restoration therapy designed to enable the formation of a functioning protein in patients with genetic disorders caused by a nonsense mutation. A nonsense mutation is an alteration in the genetic code that prematurely halts the synthesis of an essential protein. The resulting disorder is determined by which protein cannot be expressed in its entirety and is no longer functional, such as dystrophin in Duchenne muscular dystrophy. Translarna, the tradename of ataluren, is licensed in the European Economic Area for the treatment of nonsense mutation Duchenne muscular dystrophy in ambulatory patients aged two years and older. Ataluren is an investigational new drug in the United States.

 

Ataluren in Canada

At this moment, PTC Therapeutics has not applied for marketing approval with Health Canada.

 

About PTC Therapeutics

PTC is a science-driven, global biopharmaceutical company focused on the discovery, development and commercialization of clinically differentiated medicines that provide benefits to patients with rare disorders. PTC’s ability to globally commercialize products is the foundation that drives investment in a robust and diversified pipeline of transformative medicines and their mission to provide access to best-in-class treatments for patients who have an unmet medical need. To learn more about PTC, please visit them at www.ptcbio.com. Read more here > La Force DMD Blog / PTC Therapeutics.

 

, ,

Sarepta is seeking the approval of casimersen for DMD patients

Sarepta Therapeutics Completes Submission of New Drug Application Seeking Approval of Casimersen (SRP-4045) for Patients with Duchenne Muscular Dystrophy Amenable to Skipping Exon 45

  • Casimersen is designed for the treatment of exon 45 amenable patients, approximately eight percent of patients with Duchenne
  • Casimersen is the third exon-skipping medicine using the Company’s proprietary PMO RNA-based platform. 

 

CAMBRIDGE, Mass., June 26, 2020 (GLOBE NEWSWIRE) >Original press release here

Sarepta Therapeutics, Inc. has completed the submission of a rolling New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) seeking accelerated approval for casimersen (SRP-4045). Casimersen, a phosphorodiamidate morpholino oligomer (PMO), is engineered to treat patients with Duchenne muscular dystrophy (DMD) who have genetic mutations that are amenable to skipping exon 45 of the Duchenne gene.

The completion of the rolling submission includes data from the casimersen arm of the ESSENCE study (also known as study 4045-301), a global, randomized, double-blind, placebo-controlled Phase 3 study evaluating efficacy and safety in patients amenable to skipping exons 45 and 53. An interim analysis from ESSENCE demonstrated a statistically significant increase in dystrophin production as measured by western blot* in patients who received casimersen compared to baseline and placebo. The study is ongoing and remains blinded to collect additional efficacy and safety data. If the casimersen NDA is accepted and granted accelerated approval, the completed ESSENCE study will serve as a post-marketing confirmatory study.

 

Doug Ingram, president and chief executive officer, Sarepta Therapeutics. – “The completion of our casimersen submission is an important milestone in our journey to advance treatments for the greatest possible number of people living with Duchenne muscular dystrophy. If approved, casimersen will be our third approved therapy for sub-populations of Duchenne. Together with our other approved therapies, we have the potential to treat nearly 30% of Duchenne patients in the United States. Our proprietary PMO platform is an important focus of our pipeline, and we owe our clinical progress to the patients and families participating in our studies.”

 

About Casimersen

Casimersen uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to skip exon 45 of the DMD gene. Casimersen is designed to bind to exon 45 of dystrophin pre-mRNA, resulting in exclusion, or “skipping,” of this exon during mRNA* processing in patients with genetic mutations that are amenable to exon 45 skipping. Exon skipping is intended to allow the production of an internally truncated dystrophin protein.

What about Canada?

At this moment, casimersen is not available in Canada. We hope that shortly, Sarepta Therapeutics will file a request for marketing approval with Health Canada.

For a better understanding

  • * The western blot is a widely used analytical technique in molecular biology, immunogenetics and other molecular biology disciplines to detect specific proteins in a sample of tissue homogenate or extract.
  • * Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. RNA and DNA are nucleic acids and, along with lipids, proteins and carbohydrates, constitute the four major macromolecules essential for all known forms of life. Like DNA, RNA is assembled as a chain of nucleotides, but unlike DNA, it is more often found in nature as a single-strand folded onto itself, rather than a paired double-strand.
  • Read more here
  • Grounded in the DMD community

About DMD

Duchenne muscular dystrophy (DMD) is a disease that almost exclusively affects boys and whose incidence is 1 in 3,500. It is sporadic that Duchenne muscular dystrophy (DMD) will affect girls. Those affected are usually diagnosed around the age of five, but symptoms may be visible from early childhood. It is a degenerative disease of the muscles caused by a genetic mutation. The Duchenne muscular dystrophy (DMD) – for which no treatment is currently available – directly affects skeletal muscles. Without treatment, the consequences of the disease are dire for those afflicted and their families.

About Sarepta Therapeutics

The Company has built an impressive position in Duchenne muscular dystrophy (DMD) and in gene therapies for limb-girdle muscular dystrophies (LGMDs), mucopolysaccharidosis type IIIA, Charcot-Marie-Tooth (CMT), and other CNS-related disorders, with more than 40 programs in various stages of development. The Company’s programs and research focus span several therapeutic modalities, including RNA, gene therapy and gene editing. For more information, please visit www.sarepta.com or follow them on TwitterLinkedInInstagram and Facebook.

,

SIDEROS, the largest ongoing trial in Duchenne

Santhera Completes Enrollment of Phase 3 SIDEROS Study with Puldysa® (Idebenone) in Duchenne Muscular Dystrophy (DMD)

Pratteln, Switzerland, May 20, 2020

Original press release

Santhera Pharmaceuticals announces the full recruitment of its Phase 3 SIDEROS study with idebenone in Duchenne muscular dystrophy (DMD). The sample-size and variability re-assessment performed according to study protocol demonstrated that with the currently enrolled patients the study has a very high power (>99%). Given the strong powering of SIDEROS, the Company is now assessing the potential of conducting an interim analysis to test for overwhelming efficacy with a view of completing the trial early.

With patient recruitment into the 18-month international SIDEROS trial in its final stages, Santhera performed the planned sample size and variability re-assessment in accordance with the study protocol to confirm adequate study power. This blinded analysis showed that variability is lower than anticipated per protocol and, with the current number of enrolled patients, the SIDEROS study has a very high power of over 99% to detect a treatment difference. On this basis, Santhera has taken the decision to complete enrollment into the SIDEROS trial. At present, approximately half of the recruited patients in SIDEROS have completed 18 months of treatment and about two-thirds of patients have completed 12 months of treatment.

Owing to the decision to complete enrollment of this advanced study, its very high power as well as the urgent unmet medical need, Santhera is assessing the potential of conducting an interim analysis to test for overwhelming efficacy with a view of completing the trial early. Such an interim analysis would be performed by the independent Data and Safety Monitoring Board (DSMB) to preserve the integrity of the study. If overwhelming efficacy is not established in the interim analysis, the study could continue as planned with the currently enrolled patients and the corresponding high power. However, if overwhelming efficacy is demonstrated, it would be considered unethical to continue with the blinded study and the Company would decide to end the study later this year. This would result in the acceleration of corresponding regulatory filings by approximately one year both in Europe and the US.

 

Gunnar Buyse, MD, Ph.D., Professor of Child Neurology at the University Hospitals Leuven (Belgium), SIDEROS Principal Investigator and Lead Investigator for Europe – “Santhera is the only company that has dedicated its clinical development program towards finding a treatment to preserve respiratory function in DMD. The large Phase 3 SIDEROS study was designed to confirm the efficacy of idebenone in patients with respiratory function decline who are concurrently taking glucocorticoids. We are truly excited that SIDEROS has completed recruitment and is on track to generate a comprehensive dataset in an area of such high unmet need.”

 

Oscar Henry Mayer, MD, Medical Director of the Pulmonary Function Testing Laboratory at the Children’s Hospital of Philadelphia and Lead Investigator for the US – “There are currently no approved treatments to slow the rate of respiratory function decline leading to respiratory failure, which remains a leading cause of premature death in young men at the advanced stages of DMD. By slowing the rate of respiratory function decline, we open the possibility of delaying the time to chronic respiratory failure and the need to assisted ventilation and reducing the risk of other life-threatening respiratory complications.”

 

Sjöblom Nygren, MD, Chief Medical Officer and Head of Development of Santhera – “We are delighted to have reached such an important milestone and wish to express our sincere thanks to patients and families, caregivers, physicians and study personnel for their support and commitment.”

 

About SIDEROS

SIDEROS, the largest currently ongoing clinical trial in DMD, is a double-blind randomized placebo-controlled Phase 3 study evaluating the efficacy of idebenone in delaying the loss of respiratory function in patients with DMD. Patients on any stable glucocorticoid treatment scheme and irrespective of the underlying dystrophin mutation or ambulatory status were randomized to receive oral idebenone (900 mg/day three times a day) or placebo for 18 months. The primary endpoint of the trial estimates the treatment difference in FVC%p (forced vital capacity % predicted). Patients completing the trial are offered the opportunity to enroll in an open-label extension study where all patients receive idebenone. The study is currently conducted in 62 sites in the United States, Europe and Israel. Further information is available at ClinicalTrials.gov NCT#02814019.

About idebenone

Idebenone is a synthetic molecular formula similar to coenzyme Q10. Chemically, it is an organic compound of the family of quinones that can slow the loss of respiratory function.

Mitochondria are specialized structures in the human body that serve as batteries, powering various functions of the cell and the organism as a whole.

Mitochondria produce the energy necessary for the cell functioning through a process called “cellular respiration” which requires oxygen and provides energy. During cellular respiration, some toxic forms of oxygen (called oxygen free radicals) can be produced. These free radicals must be neutralized by other substances to avoid cellular damage.

Idebenone is expected to act as a neutralizer of these toxic forms of oxygen. Thus, idebenone is expected to have an antioxidant effect, and consequently prevent cellular damage.

Idebenone is optimized to dissolve in water and lipids and able to cross the mitochondrial membrane.

Idebenone is a medicine that is under investigation for the treatment of DMD. It has not yet been approved by the U.S. FDA, and the safety and efficacy continue to be evaluated in clinical trials.

More about idebenone

About Santhera Pharmaceuticals

Santhera Pharmaceuticals is a Swiss specialty pharmaceutical company focused on the development and commercialization of innovative medicines for rare neuromuscular and pulmonary diseases with a high unmet medical need. Santhera is building Duchenne muscular dystrophy (DMD) product portfolio to treat patients irrespective of causative mutations, disease stage or age. A marketing authorization application for Puldysa® (idebenone) is currently under review by the European Medicines Agency. Santhera has an option to license vamorolone, a first-in-class anti-inflammatory drug candidate with a novel mode of action, currently investigated in a pivotal study in patients with DMD to replace standard corticosteroids. The clinical-stage pipeline also includes lonodelestat (POL6014) to treat cystic fibrosis (CF) and other neutrophilic pulmonary diseases, as well as omigapil and an exploratory gene therapy approach targeting congenital muscular dystrophies. Santhera out-licensed ex-North American rights to its first approved product, Raxone® (idebenone), for the treatment of Leber’s hereditary optic neuropathy (LHON) to Chiesi Group. For further information, please visit www.santhera.com. Raxone® and Puldysa® are trademarks of Santhera Pharmaceuticals.

Sources

EU Globe News Wire

Santhera’s SYROS Study Shows Long-term Efficacy with Idebenone in Slowing Respiratory Function Loss in Patients with Duchenne Muscular Dystrophy

www.siderosdmd.com

Raxone-guides-spring-2019

www.takeabreathdmd.com

www.breatheduchenne.com