Doug Ingram
Analyst · Barclays
Thank you, Mary. Good afternoon, everyone, and thank you for joining Sarepta Therapeutics third quarter 2022 financial results conference call. Commencing with performance, as you will have seen in our release, we had another strong quarter serving the community with our three approved therapies EXONDYS 51, VYONDYS 53 and AMONDYS 45. As we mentioned on our second quarter call, about $5 million anticipated for the third quarter came in and was booked in the second quarter. And even with that, total revenue for the third quarter was approximately $230.3 million and net product revenue was $207.8 million, representing a nearly 25% growth over the same quarter last year. To remind you, in the second quarter, we raised our full year total revenue guidance to between $905 million and $920 million and our net product revenue guidance to between $825 million and $840 million. And in light of our continuing strong performance, we remain comfortable with that guidance. So, let’s move now to our gene therapy platform and specifically to SRP-9001, our gene therapy for Duchenne muscular dystrophy. 2022 has been a momentous one for SRP-9001 and for the Duchenne community that we serve. Over the course of the first half of 2022, we discussed with the FDA the possibility of submitting a biologics license application or BLA for the approval of SRP-9001 on an accelerated basis. As a result of those discussions and the written feedback that we received, we announced on our second quarter call that we intended to submit a BLA for the approval of SRP-9001 to treat ambulatory Duchenne patients. And in the third quarter, we did indeed submit our BLA for SRP-9001. Now, if all goes to plan, the FDA will accept the BLA for filing at the end of November of this year. We anticipate a PDUFA date on our BLA in May of 2023 and if successful, a launch by the middle of 2023. To those of you who have asked why we are trying to move so urgently, let me talk for just a moment about why seeking accelerated approval here is not merely appropriate but is compelled by good science and efforts. We’re justified by appropriate disease therapy and evidence. The accelerated approval pathway is an innovative modern tool that has extended and saved countless lives, including patients living with HIV AIDS, patients living with cancers and patients living with Duchenne. It brings therapies to patients in time to actually intervene and do good. And at the same time, it results in an explosion of innovation. And the FDA itself has repeatedly noted the opportunity for accelerated approval in gene therapies where appropriate. And from our perspective, SRP-9001 is an ideal candidate for accelerated approval review. Let’s consider, first, patients need this therapy now, not someday or eventually. Time is the enemy of those living with Duchenne. It irreversibly robs children of their muscle and their function on an hourly and daily basis, ultimately killing them. Preventing further disease progression is the greatest need of every Duchenne family and patients should not have to irreversibly suffer when a well-established regulatory pathway exists to bring that therapy to them now. Second, Duchenne is a well-characterized monogenic disease and the shortened functional dystrophin robustly produced by SRP-9001 is an upstream surrogate endpoint for accelerated approval, one addressing the proximate cause of disease, one founded on a wealth of scientific evidence supported by preclinical, related biomarker and clinical functional benefits and one based on a well-established precedent as the FDA has approved for therapies to date using shortened functional dystrophin as a surrogate endpoint. And finally, we are well underway to confirm the results of that accelerated approval. Our proposed confirmatory trial EMBARK is in fully rolled and fully dosed, so children can get this treatment rapidly and the accelerated approval will be expeditiously confirmed through EMBARK. The risk of granting accelerated approval is fleetingly small, while the risk of harm to Duchenne patients if we did not seek accelerated approval is certain, is severe and is invariable. So planning for the success of our BLA, we are ramping up manufacturing. We have bolstered our commercial, medical affairs, patient services and access teams, and we are focused on site and launch readiness. Additionally, we have already commenced a study to narrow the early exon mutation exclusions currently in EMBARK and thus, if successful, to safely expand the availability of SRP-9001 to a larger percentage of the Duchenne population. Likewise, we are finalizing protocols for the commencement of ENVISION, our study for non-ambulatory patients as we look to expand the label for SRP-9001 and to non-ambulatory patients as soon as possible. And continuing on the theme of expanding the addressable population. Next year, we intend to start a study with our partner, Hansa Biopharma to explore the use of imlifidase to cleave IgG in rh74 positive Duchenne patients with the goal of safely and effectively permitting dosing with SRP-9001. Dr. Rodino-Klapac will provide further commentary on our gene therapy plans and those will include our plans for LGMD in 2023 as well. Now moving to our RNA franchise. As you are aware, we have three approved PMOs today, EXONDYS, VYONDYS and AMONDYS. The first of those approvals, EXONDYS 51, came in the fall of 2016, nearly six years ago. So, in addition to continuing to prosecute our two main post-marketing commitments for those approvals, assent and mission, we have had the opportunity with respect to EXONDYS to evaluate the world evidence of the effect of our PMO therapies over time. At the World Muscle Society Conference in Halifax, Nova Scotia in October, we presented study results on the benefits of EXONDYS versus natural history controls. For those interested, you will find the poster on the Investor page of our website, including the survival benefit associated with EXONDYS. Dr. Rodino-Klapac will discuss these findings in her remarks momentarily. EXONDYS was approved on an accelerated basis using internally shortened functional dystrophin. As encouraging as the early data was to support its approval and that of VYONDYS and AMONDYS as well, with a degenerative disease, those full benefits mature and reveal themselves only over time. And that is the value of an accelerated approval to the lives of patients living with a deadly degenerative disease. Without it, patients would have been denied this therapy at least by additional years and perhaps we would never have been able to generate this long-term data without that approval. So, moving to our next-generation RNA therapy, the peptide conjugated PMO or PPMO SRP-5051. We are dosing MOMENTUM Part B, and we are on track to complete enrollment this year, and we’ll have a data readout on that trial in 2023. Finally, commenting on a management transition. We are announcing tonight that Bill Ciambrone, our Head of Technical Operations and Manufacture, will be retiring. I would like to give a big thank you to Bill without whom we would not be in the position to launch SRP-9001 next year. After an impressive career, Bill had been largely retired when I approached him in 2019. But given our mission and our science, and I’d like to believe some fair amount of persuasion from me, I was able to coax Bill out of retirement and give him 3 important goals. First, to complete the process and analytical development for SRP-9001 and to ensure we had capacity to launch SRP-9001 and to fully meet the need of the community. Second, to build a robust, sustainable technical operations function that has the talent and the focus to scale with Sarepta’s ambitions. And third, to prepare his successor as Bill had intended to make a large impact in a relatively short period of time. I am proud to say that Bill achieved every one of those goals. We have the process, the people and the capacity to launch SRP-9001 and to make it a success. Bill has built a best-in-class organization, and we now have over 300 technical operations personnel, driving us forward. And Bill has prepared an ideal successor. Bill will transition leadership of the technical operations organization to Bilal Arif at the end of this year. And then he will stay with us as both an adviser to me and to the manufacturing organization through June 2023 after the presumed PDUFA date for SRP-9001. Bilal has been with Sarepta and imminently involved in all aspects of our manufacturing activities including SRP-9001 from the beginning of 2019. He has well over 20 years of experience, including over 8 years at Shire, where he worked for and closely with Bill. I’m absolutely confident that in Bilal, we could not have a more aligned successor to bill, someone who will continue our progress without missing a beat, we will continue to drive our technical operations and it was intimately familiar with our strategic priorities and the technical requirements for success. Now Bill has made an enormous impact at Sarepta, and he’s been a great thought partner for me and for all of my colleagues on the executive committee. And I know that sentiment is shared by our Board as well. I am very pleased that he will remain involved and advise us through the approval of SRP-9001. So, thank you, Bill, for all that you’ve done and for what you will do for Sarepta and for putting us in this great position to be successful. And with that, let me turn the call over to our Head of R&D and Chief Scientific Officer, Dr. Louise Rodino-Klapac. Louise?