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Alnylam Pharmaceuticals, Inc. (NASDAQ:ALNY) Q4 2022 Earnings Call Transcript

Alnylam Pharmaceuticals, Inc. (NASDAQ:ALNY) Q4 2022 Earnings Call Transcript February 23, 2023

Operator: Thank you for standing by and welcome to the Alnylam Pharmaceuticals Fourth Quarter 2022 Financial Results Conference Call. As a reminder today's conference call is being recorded. I would now like to turn the conference over to the company. Please go ahead.

Christine Lindenboom: Good morning. I am Christine Lindenboom, Senior Vice President of Investor Relations and Corporate Communications at Alnylam. With me today on the phone are Yvonne Greenstreet, Chief Executive Officer; Tolga Tanguler, Chief Commercial Officer; Pushkal Garg, Chief Medical Officer; and Jeff Poulton, Chief Financial Officer. For those of you participating via conference call, the accompanying slides can be accessed by going to the Events section of the Investors page of our website, investors.alnylam.com/events. During today's call, as outlined on Slide 2, Yvonne will provide introductory remarks and general context. Tolga will provide an update on our global commercial progress. Pushkal will review pipeline updates and clinical progress, and Jeff will review our financials and guidance, followed by a summary of upcoming milestones before we open the call to your questions.

I'd like to remind you that this call will contain remarks concerning Alnylam's future expectations, plans, and prospects, which constitute forward-looking statements for the purposes of the Safe Harbor provision under the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors, including those discussed in our most recent periodic report on file with the SEC. In addition, any forward-looking statements represent our views only as the date of this reporting and should not be relied upon as representing our views as of any subsequent date. We specifically disclaim any obligation to update such statements. With that, I'd like to turn the call over to Yvonne.

Yvonne?

Yvonne Greenstreet: Thanks, Christine, and thank you everyone for joining the call today. 2022 was an excellent year at Alnylam where we delivered impressive commercial performance and made significant advancements across our broad pipeline of RNAi therapeutics. Commercially, as preannounced in January, we achieved full year 2022 net product revenues of $894 million which represents year-over-year growth of 35% or 43% with constant exchange rates and 13% growth between the third and fourth quarters. A tailwind to the success was the approval and launch of AMVUTTRA in the U.S., Germany, and Japan for hereditary hATTR amyloidosis patients with polyneuropathy where rapid uptake among physicians and patient reflects an attractive product profile.

With our pipeline, notable progress during the year included the exciting results for APOLLO-B, our Phase 3 study of patisiran ATTR amyloidosis patients with cardiomyopathy. The sNDA based on these results has been accepted with a PDUFA date of October the 8th. And we look forward to the FDA's review and potential approval later this year. Pushkal will provide more color on this later in the call. Among our earlier programs, a highlight for the year was the initiation of the first-in-human study of RNAi therapeutic in the CNS with ALN-APP for Alzheimer's disease. We also completed three CTA filings advancing to the clinic promising programs such as ALN-KHK for type 2 diabetes, ALN-PNP for NASH and ALN-TTRsc04 for ATTR amyloidosis and we are announcing today the dosing has started in a Phase 1 study with this program.

Looking forward to the rest of 2023, we are excited for seven important pipeline milestones, including 10 clinical readouts from Alnylam and partner led programs, such as Phase 1 results from the aforementioned ALN-APP study and Phase 2 results from the KARDIA hypertension studies of zilebesiran. This execution is in line with our focus on the following key drivers for Alnylam's group over the next several years.

xtrahepatic:

x25: With that, let me now turn the call over to Tolga for a review of our commercial performance. Tolga?

Tolga Tanguler: Thanks Yvonne and good morning everyone. Our commercial operations had a strong close to 2022 delivering $262 million in combined net product sales in Q4, which represented 13% growth compared with Q3 2022. The strong growth was driven by an increase in patients on commercial therapy across both our TTR and also rare franchises. We remain particularly encouraged by several signs indicating that the ongoing launch of AMVUTTRA for ATTR amyloidosis patients with polyneuropathy both in the U.S. and now also in Germany and Japan, is expanding the size of the opportunity for our TTR franchise. Now I will turn to our specific results starting with our TTR franchise. We saw robust growth in our TTR franchise in Q4 achieving $191 million in global net product revenues for ONPATTRO and AMVUTTRA representing a 12% increase compared with the first quarter and a solid 38% growth compared with Q4 2021.

The year-over-year growth in Q4 was driven by the strength of the AMVUTTRA launch in the U.S. with the U.S. market delivering an impressive 72% growth compared with Q4 2021. At the end of 2022, over 2,975 patients were on commercial ONPATTRO or AMVUTTRA treatment worldwide, an increase of nearly 400 patients from the end of Q3, which represents a doubling of the quarterly trend that existed prior to the launch of AMVUTTRA, a clear signal of accelerating TTR franchise growth. In the U.S. combined sales of ONPATTRO and AMVUTTRA increased 12% versus the third quarter and were primarily impacted by the following. A robust 19% increase in demand growth, which was driven by the strength of the AMVUTTRA patient uptake, which is being driven both by switches from ONPATTRO and more importantly from increases in patients new to therapy.

ONPATTRO inventory destocking in the channel during the fourth quarter reduced reported TTR growth by approximately 5%. This was anticipated as demand for ONPATTRO in the U.S. continues to decrease as more patients switched to AMVUTTRA. In our international markets, combined sales of ONPATTRO and AMVUTTRA also increased 12% versus Q3 2022, primarily driven by the success of initial international AMVUTTRA launches in Germany and Japan with growth favorably impacted both by increased patient demand and initial launch stocking. Finally, our global results continued to be challenged by foreign exchange headwinds with total TTR year-over-year reported growth of 38% deflected the foreign exchange impact of 10 percentage points due to the strengthening U.S. dollar.

Now I would like to provide you with some additional color on our ongoing AMVUTTRA U.S. launch progress as well as an update on initial international launches in Germany and Japan. In the U.S., we've received more than 750 AMVUTTRA start forms in the six plus months since launch with more than 50% of the start forms representing new patients and the balance representing switches from ONPATTRO. Consistent with what we shared at Q3, the monthly average of new therapy AMVUTTRA start forms remains at 60 per month, which is double the rate of ONPATTRO new to therapy start forms that we were receiving prior to the launch of AMVUTTRA. Furthermore in the U.S. our demand generation has been healthy and balanced between community accounts and centers of excellence and we have and we have seen an approximately 30% increase in our prescriber base since launch, a clear signal that AMVUTTRA is expanding the opportunity for our TTR franchise.

Additionally, our patient base has broadened to include a variety of newly and previously diagnosed patients starting on AMVUTTRA with significant enthusiasm being expressed for AMVUTTRA's product profile including quarterly subcutaneous dozing. Meanwhile, on the access front, given our parity launch pricing, we have not faced any significant access headwinds. We've also made significant progress with formulary approvals supporting smooth access to patients that are prescribed AMVUTTRA. In our international markets the initial launches of AMVUTTRA in Germany and Japan in Q4 experienced robust demands with new patient starts coming from both switches from ONPATTRO as well as new to therapy patients that were consistent with what we experienced in the U.S. in our initial launch quarters.

The new to therapy patients included a healthy mix of naive to therapy and switches from the competition and ONPATTRO. Our next anticipated international launch is expected in the UK in late Q1 2023. To wrap up with AMVUTTRA, we are pleased with our initial launch progress and are encouraged by the early signs that were expanding the market opportunity for our TTR franchise. Moving to our ultra-rare disease franchise, first GIVLAARI, we achieved $47 million in global net product revenues in fourth quarter representing a 3% increase compared with Q3 2022 and 16% growth versus Q4 2021. At the end of 2022, over 520 patients were on commercial GIVLAARI treatments worldwide, up from over 460 at the end of the third quarter representing 13% quarterly patient growth.

The reported 16% increase in year-over-year global net product revenue growth of GIVLAARI reflected a foreign exchange impact of 6 percentage points due to the strengthening U.S. dollar. In the U.S. sales of GIVLAARI were flat versus the third quarter, primarily due to the demand growth of 3% driven by an increase in patients on therapy, which was offset by changes in inventory stocking during the quarter. In our international markets, GIVLAARI sales increased 10% compared with the third quarter, primarily due to the growth in patients on therapy and the timing of orders in partner markets. Moving now to our second ultra-rare disease product OXLUMO. We achieved $24 million in global net product revenues in the fourth quarter representing a 45% increase compared with the third quarter.

At the end of 2022 over 280 patients were on commercial OXLUMO treatment worldwide, up from over 230 at the end of the third quarter, representing 22% quarterly patient growth. In the U.S. sales of OXLUMO increased 38% versus the third quarter due to a growth in patients on therapy and an increase in average patient utilization during the quarter driven by more patients on the monthly loading dose portion of their initial treatments. In our international business sales of OXLUMO increased 50% compared with the third quarter due to an increase in patients on therapy and due to the timing of orders in partner markets. Additionally, as with ONPATTRO and GIVLAARI, changes in foreign exchange rates also negatively impacted OXLUMO Q4 2022 results with reported year-over-year growth of 24% reflected a foreign exchange impact of 9 percentage points due to the strengthening U.S. dollar.

Medicine, Packing, Drug
Medicine, Packing, Drug

Photo by alexander grey on Unsplash

In conclusion, we are pleased with the growth in revenues and patient demand achieved in Q4 and particularly with our early signs of strong performance associated with the AMVUTTRA launch, which we believe represents an important therapy option for hATTR amyloidosis patients with polyneuropathy and an accelerated growth opportunity for our TTR franchise. With that, I will now turn it over to Pushkal to review our recent R&D and pipeline progress. Pushkal?

Pushkal Garg: Thanks Tolga, and good morning everyone. Let me begin by updating you on our efforts in ATTR amyloidosis, where we are advancing three clinical stage product candidates, patisiran, vutrisiran, and as I'll update in a moment, TTRsc04. First, as you've heard from Yvonne, we are delighted that our supplemental new drug application for patisiran for the cardiomyopathy of ATTR amyloidosis has been accepted by the FDA with a standard review and a PDUFA date of October 8th. In their file acceptance letter, the FDA stated that they have not identified any review issues. The agency also noted that they are planning to hold an advisory committee meeting to discuss the application. If approved, this will allow us to extend the potential benefits of an RNAi therapeutic to the many patients with wild type and hereditary ATTR amyloidosis with cardiomyopathy.

This filing is based on the pivotal APOLLO-B study, which demonstrated improved functional status and quality of life in patients with ATTR cardiomyopathy given patisiran for 12 months relative to placebo. The efficacy is also supported by an encouraging safety profile and exploratory data indicating that patisiran treatment can favorably impact disease progression. With the sNDA now accepted, I'd also like to share some details on our global filing plans for patisiran in ATTR amyloidosis with cardiomyopathy. We are planning to submit an sNDA in Brazil in early 2023. However, we do not plan to pursue label expansion in other regions. This is a result of the earlier than anticipated enrollment completion of the vutrisiran and HELIOS-B study combined with the timelines for regulatory approval and obtaining market access in these countries.

As a result, we will focus our efforts in other regions to submitting an sNDA for vutrisiran assuming positive results from the ongoing HELIOS-B study. As a reminder, HELIOS-B is studying a similar population as APOLLO-B, but is designed for a primary outcomes endpoint of all-cause mortality and recurrent CV events. We remain on track to share top line results in early 2024. As you know, we have been evaluating a biannual dosing regimen of vutrisiran as part of the HELIOS-A randomized treatment extension or RTE, which was performed after the main portion of the study had completed. Our objective has been to see if we can provide a more convenient dosing regimen versus the already excellent profile of the 25 mg every three months regimen with maintained efficacy.

The primary endpoint of the RTE was non-inferiority of TTR lowering with the 50 mg biannual regimen versus the 25 mg quarterly regimen as well as an acceptable safety profile. Today we are reporting top line results of the randomized treatment extension through month nine. As expected non-inferiority of the 50 mg biannual dosing regimen was indeed established as demonstrated by mean serum TTR reduction over nine months. However, we did note some recovery of serum TTR reduction in the 50 mg arm towards the very end of the dosing interval at six months. To illustrate this, at month six, 80% of patients on the 25 mg quarterly regimen achieved 80% knockdown or greater, whereas on the 50 mg biannual regimen, 63% of patients achieved that same degree of knockdown.

In other words, 37% of patients did not get to 80% TTR knockdown with the biannual regimen. Vutrisiran also continued to demonstrate an acceptable safety profile. No safety signals regarding cardiac, hepatic or renal events were observed. In the RTE study there were six deaths of which five occurred on the 50 mg biennial arm and one occurred on the 25 mg quarterly arm, after the patient dropped out of the study. None was considered related to the study drug and the majority occurred in patients with notable preexisting cardiomyopathy at baseline in the context of known aggressive mutations. We're planning to present more details on these results in a scientific congress in early 2023. Despite the supportive efficacy data and safety data from the RTE, we've made the strategic decision not to move forward with regulatory submissions for the 50 mg biannual dosing regimen of vutrisiran as previously planned.

Several factors played into that decision. First, the dynamics of serum TTR recovery observed towards the very end of the biannual dosing interval, which we believe is suboptimal in terms of a product profile where we see clamped pharmacology in order to achieve maximal efficacy for patients. Second, as you heard from Tolga, the very strong initial commercial performance of AMVUTTRA in its first two quarters on the market, given its compelling therapeutic profile with quarterly subcutaneous dosing, along with the extremely positive feedback it has received from patients and physicians, allows us to exercise greater selectivity in advancing an innovative offering.

IKARIA Platform and: In addition to our late stage clinical programs, we believe we have also been making great progress with our early and mid-stage programs. A notable highlight includes zilebesiran, our investigational RNAi therapeutic for hypertension which we believe could transform the treatment of this disease and offer a highly differentiated profile from all existing antihypertensives including RAS inhibitors. We're thrilled to have announced that our KARDIA-1 Phase 2 study was fully enrolled as of December and on track to deliver top line results in mid-2023. We also look forward to KARDIA-2 top line results at or around year end 2023. We're also working to expand delivery of RNAi therapeutics to tissues beyond the liver.

To that end, we are on the cusp of seeing important data from ALN-APP, which is our first investigational RNAi therapeutic directed to the CNS, and in development for the treatment of Alzheimer's disease and cerebral amyloid angiopathy. ALN-APP has the potential to offer a highly differentiated approach in Alzheimer's disease by targeting APP upstream of where antibodies currently target and has the potential to act both intracellularly and extracellularly to reduce disease-causing peptides. We believe these initial clinical data with ALN-APP if positive will be an important milestone, not just for this particular program, but for our overall CNS platform to show that RNAi can achieve clinically relevant degrees of target knockdown in the CNS with a safety and dosing profile that supports further development.

We remain on track to report top line results from the Phase 1 study in early 2023. These are just a few highlights from our broad and innovative pipeline, driven by our underlying organic product engine that we expect will deliver sustainable innovation and represents a key growth driver for Alnylam in the years to come. To wrap up these highlights, we're excited to have submitted a CTA filing for ALN-KHK in type 2 diabetes with a Phase 1 start expected imminently. In addition, our partners at Regeneron have begun dosing in a Phase 1 trial of ALN-PNP in NASH. With that, let me now turn it over to Jeff to review our financial results and upcoming milestones. Jeff?

Jeff Poulton: Thanks Pushkal, and good morning everyone. I'm pleased to be presenting Alnylam's Q4 in full year 2022 financial results, which underscore Alnylam's strong commercial capabilities and operational excellence. After commenting on our fourth quarter and full year results, I will also provide our financial guidance for 2023. Turning now to a summary of our full P&L results for the fourth quarter and full year, total product revenues for 2022 were $894 million or 35% growth versus 2021 or 43% on a constant exchange rate basis with growth contributions from all four commercial products. Net revenue from collaborations for the fourth quarter was approximately $71 million, representing an 18% increase compared with Q4 2021, primarily due to increased revenue from our collaboration with Regeneron from increased manufacturing activities in the quarter.

For the full year, net revenue from collaborations was $135 million, representing a 25% decrease compared with 2021 primarily due to a decrease in revenue recognized in connection with our collaboration agreements with Regeneron and Vir, attributed to reduced research and manufacturing activities and timing of reimbursable activities. Our non-GAAP R&D expenses increased 16% in the fourth quarter 2022 compared to the same period in the prior year, primarily due to increases in headcount to support our R&D pipeline and development expenses associated with the KARDIA-1 and KARDIA-2 zilebesiran Phase 2 studies. Our non-GAAP SG&A expenses increased 15% in the fourth quarter of 2022 compared to the same period in the prior year, primarily due to increased headcount and other investments in support of the global launch of AMVUTTRA and other corporate expenses to support the scaling of our business.

Our combined non-GAAP R&D and SG&A expenses were approximately $1.4 billion for the full year 2022, representing 14% growth versus 2021 as we continue to advance our pipeline and deliver strong top line growth while maintaining discipline and how we invest in our operations.

x25: Finally, we ended the year with cash, cash equivalents and marketable securities of $2.2 billion compared to $2.4 billion at the end of 2021 with the decrease primarily due to our operating loss in 2022, which was partially offset by approximately $265 million received from employee option award exercises and approximately $135 million from our convertible debt financing. We continue to believe that our current cash balance will bridge us to financial self-sustainability, an enviable position in today's market environment. Now turning to our financial guidance for 2023, starting with net product revenues, we are providing combined net product revenue guidance from ONPATTRO, GIVLAARI, OXLUMO, and AMVUTTRA. Our guidance assumes the sNDA for patisiran for ATTR amyloidosis with cardiomyopathy in the U.S. will be approved by the PDUFA date on October 8th, 2023, and also assumes foreign exchange rates as of December 31, 2022.

We anticipate combined net product revenues for these four products will be between $1.2 billion and $1.285 billion with the projected report growth range versus 2022 of 34% to 44%. As you can see, we are also providing constant exchange rate growth guidance for our net product revenues this year with a projected range of 34% to 44%, highlighting no current difference between our reported and constant exchange rate growth guidance. Our guidance for net revenue from collaborations and royalties is a range between $100 million and $175 million with the midpoint of the range of approximately flat versus 2022. We anticipate the collaboration revenue associated with our partnership with Regeneron and Leqvio royalties from Novartis will drive the majority of our collaboration and royalty revenue in 2023.

Our guidance for combined non-GAAP R&D and SG&A expenses is a range between $1.575 billion and $1.65 billion. The midpoint of the guidance range represents a projected 13% increase compared with 2022. Growth highlights for R&D expense in 2023 include increased investment in zilebesiran as we progress the KARDIA-1 and KARDIA-2 Phase 2 studies, initial investment in TTRsc04, as well as growth in pre-DC and IND enabling efforts across our preclinical portfolio as we continue to invest in creating new organic growth opportunities for the future. Growth Highlights for SG&A expense in 2023 include increased medical and commercial investment as we prepare for the potential launch of patisiran in the U.S. for ATTR amyloidosis with cardiomyopathy. Let me now turn from financials and discuss some key goals and upcoming milestones slated for early 2023.

We will, of course, be executing on the global commercialization of our products on ONPATTRO, AMVUTTRA, GIVLAARI and OXLUMO. We expect to complete enrollment in the KARDIA-2 Phase 2 studies of zilebesiran, topline results from our Phase 1 study of ALN-APP in patients with early onset Alzheimer's disease is on track for early 2023 with our partner program Vir expects additional results from Phase 2 combination trials of ALN-HBV02, and Regeneron plans to initiate a Phase 2 study of ALN-HSD in patients with NASH. Let me now turn it back to Christine and coordinate our Q&A session. Christine?

Christine Lindenboom: Thank you, Jeff. Operator, we will now open the call for your questions. To those dialed in, we would like to ask you to limit yourself to one question each and then get back in the queue if you have additional questions.

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