Alnylam Announces Interim Phase 1 Data of Nucresiran (ALN-TTRsc04) Showing Rapid Knockdown of TTR that is Sustained at Six Months Following a Single Dose
− Single Dose of Nucresiran 300mg or Higher Led to Rapid Knockdown of Mean TTR Levels of Greater than
− At These Doses, Peak Reduction of Mean TTR Levels of Greater than
− Data Support Potential for Biannual or Annual Subcutaneous Dosing, Representing a New Paradigm in the Treatment of ATTR Amyloidosis −
− Encouraging Safety and Tolerability Observed −
− Alnylam Continues to Expect to Share Phase 3 Development Plans in Q1 2025 –
These new results demonstrated that a single dose of nucresiran at 300 mg or higher led to rapid knockdown of serum TTR with low inter-patient variability, with mean reductions of greater than
“We are very excited by these new Phase 1 data with nucresiran, our next-generation TTR-targeting RNAi therapeutic, which demonstrated that a single dose of ≥300 mg achieved rapid knockdown of TTR greater than
The ongoing Phase 1 dose-finding study evaluated the safety, as well as pharmacodynamics and pharmacokinetics, of single doses of nucresiran in healthy subjects. As previously presented at Alnylam’s R&D Day in December 2023, a single dose of nucresiran led to rapid knockdown of serum TTR that was highly durable.
In subjects receiving a single 300 mg dose of nucresiran, mean serum TTR reduction of
There has been low inter-patient variability in the TTR reduction observed; at Day 29, TTR reduction ranged from 96.0 –
In the study, nucresiran has been well tolerated at all tested doses. The majority of adverse events across doses have been mild and none have been considered to be related to treatment. There have been no injection site reactions and no safety signals identified, including no liver-related signals.
Phase 1 Study Design
The Phase 1 trial is a randomized, double-blind, placebo-controlled, single ascending dose study designed to evaluate the safety, tolerability, pharmacokinetic (PK) and pharmacodynamic (PD) effects of nucresiran in healthy adult subjects. The study enrolled 48 healthy adult subjects randomized 3:1 to receive a single ascending dose of 5, 25, 100, 300, 600, or 900 mg of nucresiran or placebo. The primary endpoint of the study is safety and secondary endpoints include the change from baseline in serum TTR over time, as well as characterization of plasma and urine pharmacokinetics (PK) of nucresiran.
About Nucresiran
Nucresiran is an investigational RNAi therapeutic in development to deliver rapid knockdown of mutant and wild-type transthyretin (TTR) and address the underlying cause of transthyretin (ATTR) amyloidosis. As part of Alnylam’s proprietary IKARIA™ platform, nucresiran has the potential to achieve deeper and more durable rapid knockdown of TTR, allowing for less frequent dosing. The safety and efficacy of nucresiran have not been established or evaluated by the FDA, EMA or any other health authority.
About ATTR
Transthyretin amyloidosis (ATTR) is an underdiagnosed, rapidly progressive, debilitating and fatal disease caused by misfolded transthyretin (TTR) proteins, which accumulate as amyloid deposits in various parts of the body, including the nerves, heart and gastrointestinal tract. Patients may present with polyneuropathy, cardiomyopathy or both manifestations of disease. There are two different forms of ATTR – hereditary ATTR (hATTR), which is caused by a TTR gene variant and affects approximately 50,000 people worldwide, and wild-type ATTR (wtATTR), which occurs without a TTR gene variant and impacts an estimated 200,000-300,000 people worldwide.
About RNAi
RNAi (RNA interference) is a natural cellular process of gene silencing that represents one of the most promising and rapidly advancing frontiers in biology and drug development today. Its discovery has been heralded as “a major scientific breakthrough that happens once every decade or so,” and was recognized with the award of the 2006 Nobel Prize for Physiology or Medicine. By harnessing the natural biological process of RNAi occurring in our cells, a new class of medicines known as RNAi therapeutics is now a reality. Small interfering RNA (siRNA), the molecules that mediate RNAi and comprise Alnylam’s RNAi therapeutic platform, function upstream of today’s medicines by potently silencing messenger RNA (mRNA) – the genetic precursors that encode for disease-causing or disease pathway proteins – thus preventing them from being made. This is a revolutionary approach with the potential to transform the care of patients with genetic and other diseases.
About Alnylam Pharmaceuticals
Alnylam (Nasdaq: ALNY) has led the translation of RNA interference (RNAi) into a whole new class of innovative medicines with the potential to transform the lives of people afflicted with rare and prevalent diseases with unmet need. Based on Nobel Prize-winning science, RNAi therapeutics represent a powerful, clinically validated approach yielding transformative medicines. Since its founding in 2002, Alnylam has led the RNAi Revolution and continues to deliver on a bold vision to turn scientific possibility into reality. Alnylam has a deep pipeline of investigational medicines, including multiple product candidates that are in late-stage development. Alnylam is executing on its “Alnylam P5x25” strategy to deliver transformative medicines in both rare and common diseases benefiting patients around the world through sustainable innovation and exceptional financial performance, resulting in a leading biotech profile. Alnylam is headquartered in
Alnylam Forward-Looking Statements
This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than historical statements of fact regarding Alnylam’s expectations, beliefs, goals, plans or prospects including, without limitation, the potential for nucresiran to achieve durability supportive of biannual or annual dosing and to represent a new paradigm in the treatment of ATTR amyloidosis; the potential to reduce interpatient variability in TTR lowering with nucresiran; and the timing of Alnylam’s release of Phase 3 development plans for nucresiran should be considered forward-looking statements. Actual results and future plans may differ materially from those indicated by these forward-looking statements as a result of various important risks, uncertainties and other factors, including, without limitation, risks and uncertainties relating to: Alnylam’s ability to successfully execute on its “Alnylam P5x25” strategy; Alnylam’s ability to successfully demonstrate the efficacy and safety of its product candidates; the pre-clinical and clinical results for Alnylam’s product candidates; actions or advice of regulatory agencies and Alnylam’s ability to obtain regulatory approval for its product candidates, as well as favorable pricing and reimbursement; successfully launching, marketing and selling Alnylam’s approved products globally; and any delays, interruptions or failures in the manufacture and supply of Alnylam’s product candidates or its marketed products; as well as those risks more fully discussed in the “Risk Factors” filed with Alnylam’s 2023 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC), as may be updated from time to time in Alnylam’s subsequent Quarterly Reports on Form 10-Q and in its other SEC filings. In addition, any forward-looking statements represent Alnylam’s views only as of today and should not be relied upon as representing its views as of any subsequent date. Alnylam explicitly disclaims any obligation, except to the extent required by law, to update any forward-looking statements.
View source version on businesswire.com: https://www.businesswire.com/news/home/20241117936734/en/
Alnylam Pharmaceuticals, Inc.
Christine Regan Lindenboom
(Investors and Media)
+1-617-682-4340
Josh Brodsky
(Investors)
+1-617-551-8276
Source: Alnylam Pharmaceuticals, Inc.
