Market Size
Small Interfering RNA (siRNA) Therapeutics Market reached US$ 2.99 billion in 2025 and is expected to reach US$ 14.54 billion by 2033, growing at a CAGR of 17.4% during the forecast period 2026-2033.
The small interfering RNA (siRNA) therapeutics market is experiencing significant growth due to the rising research and development activities for developing novel cell therapies, rising regulatory support and approvals, rising demand for alternatives to traditional drugs for the treatment of life-threatening chronic diseases, and technological advancements and development of novel delivery methods. However, the high cost of cell therapies and efficacy issues can significantly hinder their adoption. The Expanding Applications of siRNA Therapies are a key opportunity for market expansion in the forecast period.
Executive Summary
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Market Dynamics: Drivers & Restraints
The rising R&D activities and product approvals are driving the market growth
The small interfering RNA (siRNA) therapeutics have evolved as the most advanced therapeutic modalities for the treatment of rare and life-threatening diseases with high unmet needs. siRNA drugs work by silencing specific genes at the post-transcriptional level and preventing the expression of proteins encoded by those genes. The discovery of this mechanism has opened new avenues to treat diseases caused by faulty genes.
At present, 7 siRNA therapies have been approved for various indications, where gene mutations play a major role in their pathophysiology. The first siRNA therapy, patisiran (Onpattro), was approved in 2018 by the U.S. Food and Drug Administration (FDA). Since then, there have been many research efforts to discover and develop new siRNA therapies that are targeted at various conditions. The most recent approval by the U.S. FDA was in March 2025, when fitusiran (Qfitlia), developed by Alnylam Pharmaceuticals, Inc., received marketing authorization for the treatment of hemophilia A and B. This drug has become the first siRNA therapy in the hemophilia treatment landscape. There are several siRNA therapies in the clinical pipeline, which are expected to make market entry in the forecast period and propel the overall market growth.
High cost of approved siRNA therapies may restrain the market growth
Although siRNA therapies are revolutionizing the rare disease treatment landscape, they are priced very high. For instance, patisiran, sold under the brand name Onpattro, is priced at US$ 10,455 per 5 mL supply of 2mg/ml i.v. Solution. The patient needs one infusion once every 3 weeks, based on the indication. The annual spending of a patient will skyrocket if they are not covered through reimbursement. Patients who are not covered under any insurance plan have to pay out of pocket to afford these therapies.
Moreover, the reimbursement of these drugs may pose a significant financial burden on payers, and they may impose stringent criteria to get access to these drugs. Hence, the adoption of siRNA therapies is expected to be hindered in the forecast period.
Small Interfering RNA (siRNA) therapeutics Market Pipeline Analysis
Small Interfering RNA (siRNA) therapeutics Market Segment Analysis
The global small interfering RNA (siRNA) therapeutics market is segmented based on drug, indication, route of administration, and region.
Vutrisiran in the drug segment accounted for 38.05% of the market share in the global small interfering RNA (siRNA) therapeutics market.
Vutrisiran, sold under the brand name Amvuttra, is a siRNA therapy developed and marketed by Alnylam Pharmaceuticals, Inc. Vutrisiran is indicated for the treatment of polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults, Cardiomyopathy of wild-type or hereditary transthyretin-mediated amyloidosis in adults to reduce cardiovascular mortality, cardiovascular hospitalizations, and urgent heart failure visits.
At present Amvuttra is the top selling small interfering RNA therapy which accounted for a total of 38.05% market share with reportedly US$ 970.45 million sales.
Market Geographical Analysis
North America dominated the small interfering RNA (siRNA) therapeutics market with the highest share of 52.2%
The North America region has become the hub of innovations in the biopharmaceutical industry, and the region, especially the United States, leads in the siRNA therapeutics market. The dominance is mainly attributed to the availability of all approved siRNA therapies in the U.S. market, and the higher proportion of sales each siRNA therapy is generating. For instance, below is the list of top-selling siRNA therapies in terms of sales value and their revenue share from the U.S. market.
siRNA Therapy | Sales (US$ Million) in 2024 | U.S. Sales | U.S. Share |
Amvuttra | 970.45 | 630.61 | 64.98% |
Leqvio | 754.00 | 385.00 | 51.06% |
Givlaari | 255.87 | 165.37 | 64.63% |
Onpattro | 252.85 | 74.78 | 29.57% |
Oxlumo | 167.05 | 62.76 | 37.57% |
This signifies the dominance of the North America region, especially the United States, in the global small-interfering RNA (siRNA) therapeutics market.
Small Interfering RNA (siRNA) Therapeutics Market Major Players
The major players in the small interfering RNA (siRNA) therapeutics market are Alnylam Pharmaceuticals, Inc., Novartis AG, and Novo Nordisk A/S., among others.
Small Interfering RNA (siRNA) Therapeutics Market Emerging Players
The emerging players in the small interfering RNA (siRNA) therapeutics market are Arbutus Biopharma, ADARx Pharmaceuticals, Arrowhead Pharmaceuticals, Inc., and Amgen Inc., among others.
Key Development
- March 2026: Alnylam Pharmaceuticals announced the launch of siRELIS™, a proprietary enzymatic ligation-based RNAi manufacturing platform for siRNA therapeutics, investing $250 million to expand capacity, reduce production costs, and support future pipeline launches. This technological advancement enhances scalability and efficiency in siRNA production, positioning Alnylam for sustainable innovation across genetic and other diseases. The platform represents a best-in-class approach to RNAi manufacturing, enabling broader access to siRNA therapies globally.
- December 2025: Sirius Therapeutics dosed the first patient in the Phase 2 trial of SRSD216, an investigational siRNA therapy targeting hyperlipoproteinemia(a) for atherosclerotic cardiovascular disease patients. Building on prior Phase 1 approvals from FDA and China NMPA, this R&D milestone advances long-acting siRNA for cardiometabolic disorders with potential for quarterly dosing. The trial evaluates safety and efficacy, highlighting Sirius's progress in next-generation RNA delivery technologies.
- September 2025: CRISPR Therapeutics and Sirius Therapeutics dosed the first patient in the Phase 2 trial of SRSD107 in Europe, a long-acting Factor XI siRNA for thromboembolic disorders following promising Phase 1 data showing >93% FXI reduction. This key R&D development proves clinical proof-of-concept for siRNA-mediated Factor XI inhibition with durable efficacy up to 6 months. The collaboration accelerates global co-development and commercialization of novel siRNA therapies.
Market Scope
Metrics | Details | |
CAGR | 17.4% | |
Market Size Available for Years | 2023-2033 | |
Estimation Forecast Period | 2026-2033 | |
Revenue Units | Value (US$ Mn) | |
Segments Covered | Drug | Patisiran, Givosiran, Lumasiran, Inclisiran, Nedosiran, Vutrisiran, and Others |
Indication | Transthyretin Amyloidosis, Acute Hepatic Porphyria, Primary Hyperoxaluria Type 1, Primary Hyperlipidemia, and Others | |
Route of Administration | Intravenous and Subcutaneous | |
Regions Covered | North America, Europe, Asia-Pacific, South America, and the Middle East & Africa | |
