Overview



We are a global commercial-stage biopharmaceutical company developing novel
therapeutics based on ribonucleic acid interference, or RNAi. RNAi is a
naturally occurring biological pathway within cells for sequence-specific
silencing and regulation of gene expression. By harnessing the RNAi pathway, we
have developed a new class of innovative medicines, known as RNAi therapeutics.
RNAi therapeutics are comprised of small interfering RNA, or siRNA, and function
upstream of conventional medicines by potently silencing messenger RNA, or mRNA,
that encode for proteins implicated in the cause or pathway of disease, thus
preventing them from being made. We believe this is a revolutionary approach
with the potential to transform the care of patients with rare and prevalent
diseases. To date, our efforts to advance this revolutionary approach have
yielded the approval of five first-in-class RNAi-based medicines, ONPATTRO®
(patisiran), GIVLAARI® (givosiran), OXLUMO® (lumasiran), AMVUTTRA® (vutrisiran)
and Leqvio® (inclisiran).

Our research and development strategy is to target genetically validated genes
that have been implicated in the cause or pathway of human disease. We utilize a
N-acetylgalactosamine (GalNAc) conjugate approach or lipid nanoparticle (LNP) to
enable hepatic delivery of siRNAs. For delivery to the central nervous system,
or CNS, and the eye (ocular delivery), we are utilizing an alternative conjugate
approach based on a hexadecyl (C16) moiety as a lipophilic ligand. We are also
advancing approaches for lung, muscle and adipose tissue delivery of siRNAs. Our
focus is on clinical indications where there is a high unmet need, a genetically
validated target, early biomarkers for the assessment of clinical activity in
Phase 1 clinical studies, and a definable path for drug development, regulatory
approval, patient access and commercialization.

In early 2021, we launched our Alnylam P5x25 strategy, which focuses on our planned transition to a top five biotech company, as measured by market capitalization, by the end of 2025. With Alnylam P5x25, we aim to deliver transformative rare and prevalent disease medicines for patients around the world through sustainable innovation, while delivering exceptional financial performance.



We currently have five marketed products and over a dozen clinical programs,
including multiple programs in late-stage development, across four Strategic
Therapeutic Areas, or "STArs:" Genetic Medicines; Cardio-Metabolic Diseases;
Hepatic Infectious Diseases; and CNS/Ocular Diseases. Four of our marketed
products are within the Genetic Medicines STAr, ONPATTRO, GIVLAARI, OXLUMO and
AMVUTTRA. ONPATTRO is approved by the United States Food and Drug
Administration, or the FDA, for the treatment of the polyneuropathy of
hereditary transthyretin-mediated amyloidosis, or hATTR amyloidosis, in adults
and has also been approved in the European Union, or EU, for the treatment of
hATTR amyloidosis in adult patients with stage 1 or stage 2 polyneuropathy, in
Japan for the treatment of transthyretin, or TTR, type familial amyloidosis with
polyneuropathy, and in multiple additional countries, including Brazil. In
August 2022, we reported positive results from the APOLLO-B Phase 3 study of
patisiran (the non-branded name of ONPATTRO) in patients with ATTR amyloidosis
with cardiomyopathy and announced that we plan to submit a supplemental New Drug
Application, or sNDA, for ONPATTRO as a potential treatment for ATTR amyloidosis
with cardiomyopathy for review by the FDA in late 2022. GIVLAARI is approved in
the U.S. for the treatment of adults with acute hepatic porphyria, or AHP, in
the EU for the treatment of AHP in adults and adolescents aged 12 years and
older, and in several additional countries, including Brazil, Canada,
Switzerland and Japan. Regulatory filings for givosiran (the non-branded drug
name for GIVLAARI) are pending or planned during the remainder of 2022 and
beyond. In November 2020, we received regulatory approval for OXLUMO in the U.S.
and EU for the treatment of primary hyperoxaluria type 1, or PH1, in all age
groups. In June 2021, we received marketing authorization approval for OXLUMO in
Brazil for the treatment of PH1 in both children and adult patients. In October
2022, we announced that the FDA approved our sNDA for lumasiran (the non-branded
drug name for OXLUMO), for the treatment of PH1 to lower urinary oxalate and
plasma oxalate levels in pediatric and adult patients. Regulatory filings in
other territories are pending and additional filings are planned during the
remainder of 2022 and beyond. In June 2022, we received regulatory approval for
AMVUTTRA in the U.S. for the treatment of the polyneuropathy of hATTR
amyloidosis in adults. In September 2022, the European Commission, or EC,
granted marketing authorization for AMVUTTRA for the treatment of hATTR
amyloidosis in adult patients with stage 1 or stage 2 polyneuropathy. We have
also filed for regulatory approval for vutrisiran (the non-branded name of
AMVUTTRA) with the Brazilian Health Regulatory Agency and the Japanese
Pharmaceuticals and Medical Devices Agency, or the PMDA. Additional regulatory
filings are planned during the remainder of 2022 and beyond.

Our fifth product, Leqvio (inclisiran), is in the Cardio-Metabolic Diseases
STAr. Leqvio is being developed and commercialized by our partner Novartis AG,
or Novartis, and has received marketing authorization from the EC for the
treatment of adults with hypercholesterolemia or mixed dyslipidemia and from the
FDA as an adjunct to diet and maximally tolerated statin therapy for the
treatment of adults with heterozygous familial hypercholesterolemia, or HeFH, or
clinical atherosclerotic cardiovascular disease, or ASCVD, who require
additional lowering of LDL-C. As of the end of September 2022, Leqvio has been
approved in more than 60 countries.

In addition to our marketed products, we have multiple late-stage investigational programs advancing toward potential commercialization. These programs include our wholly owned programs: lumasiran for the treatment of recurrent renal stones; patisiran for the treatment of transthyretin amyloidosis, or ATTR amyloidosis, with cardiomyopathy; vutrisiran for the


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treatment of ATTR amyloidosis with cardiomyopathy; as well as fitusiran for the
treatment of hemophilia, which is being advanced by our partner Genzyme
Corporation, a Sanofi Company, or Sanofi; and cemdisiran for the treatment of
complement-mediated diseases, which we are advancing as a monotherapy in a Phase
2 study, and our partner Regeneron Pharmaceuticals, Inc., or Regeneron, is
advancing cemdisiran in combination with pozelimab in Phase 3 studies in
myasthenia gravis and paroxysmal nocturnal hemoglobinuria.

As part of our Alnylam P5x25 strategy, we are focused on developing
transformative prevalent disease medicines. In addition to Leqvio, we are
advancing zilebesiran, an investigational, subcutaneously administered RNAi
therapeutic targeting angiotensinogen, or AGT, in development for the treatment
of hypertension. In November 2021, we reported positive interim data from the
ongoing Phase 1 study of zilebesiran, and initiated the KARDIA Phase 2 clinical
studies for zilebesiran. KARDIA-1 is designed to evaluate zilebesiran as a
monotherapy across different doses administered quarterly and biannually.
KARDIA-2 will evaluate the safety and efficacy of zilebesiran administered
biannually as a concomitant therapy in patients whose blood pressure is not
adequately controlled by standard of care antihypertensive medications.

In further support of our Alnylam P5x25 strategy and in view of our evolving
risk profile, we remain focused on continued evolution of our global
infrastructure, including key objectives such as optimizing our global structure
for execution in key markets, enhancing performance consistent with our values,
and continuing to strengthen our culture. We maintain focus on our global
compliance program to drive its evolution and enhancement in view of the Alnylam
P5x25 strategy. Building from our global Code of Business Conduct and Ethics,
our compliance program is designed to empower our employees and those with whom
we work to execute on our strategy consistent with our values and in compliance
with applicable laws. Comprised of components such as risk assessment and
monitoring; policies, procedures, and guidance; training and communications;
dedicated resources; and systems and processes supporting activities such as
third party relationships and investigations and remediation; our program and
related controls are built to enhance our business processes, structures, and
controls across our global operations.

Based on our expertise in RNAi therapeutics and broad intellectual property
estate, we have formed alliances with leading pharmaceutical and life sciences
companies to support our development and commercialization efforts, including
Regeneron, Novartis (which acquired our partner The Medicines Company, or MDCO,
in 2020), Sanofi, Vir Biotechnology, Inc., or Vir, Dicerna Pharmaceuticals, Inc.
(acquired by Novo Nordisk A/S, or Novo Nordisk, in December 2021), or Dicerna,
and PeptiDream, Inc., or PeptiDream.

We have incurred significant losses since we commenced operations in 2002 and as
of September 30, 2022, we had an accumulated deficit of $6.36 billion.
Historically, we have generated losses principally from costs associated with
research and development activities, acquiring, filing and expanding
intellectual property rights, and selling, general and administrative costs. As
a result of planned expenditures for research and development activities
relating to our research platform, our drug development programs, including
clinical trial and manufacturing costs, the establishment of late-stage clinical
and commercial capabilities, including global commercial operations, continued
management and growth of our patent portfolio, collaborations and general
corporate activities, we expect to incur additional operating losses, however we
expect 2019 represents our peak operating loss year as we transition towards a
self-sustainable financial profile. We anticipate that our operating results
will continue to fluctuate for the foreseeable future. Therefore,
period-to-period comparisons should not be relied upon as predictive of the
results in future periods.

We currently have programs focused on a number of therapeutic areas and, as of
September 30, 2022, we generate worldwide product revenues from four
commercialized products, ONPATTRO, GIVLAARI, OXLUMO and AMVUTTRA, primarily in
the U.S., Europe and Japan. However, our ongoing development efforts may not be
successful and we may not be able to commence sales of any other products and/or
successfully market and sell our approved products or any other products
approved in the future. A portion of our total revenues in recent years has been
derived from collaboration revenues from strategic alliances with Regeneron, Vir
and Novartis. In addition to revenues from the commercial sales of our approved
products and potentially from sales of future products, we expect our sources of
potential funding for the next several years to continue to be derived in part
from existing and new strategic alliances. Such alliances include, or may
include in the future, license and other fees, funded research and development,
milestone payments and royalties on product sales by our licensors, including
royalties on sales of Leqvio made by our partner Novartis, as well as proceeds
from the sale of equity or debt.

Convertible Senior Notes



In September 2022, we issued $1.04 billion aggregate principal amount of 1.00%
Convertible Senior Notes due 2027, or Notes. The Notes will mature on September
15, 2027, unless earlier converted, redeemed or repurchased. The Notes will bear
interest from September 15, 2022 at a rate of 1.00% per year payable
semiannually in arrears on March 15 and September 15 of each year, beginning on
March 15, 2023. Before June 15, 2027, noteholders will have the right to convert
their Notes in certain circumstances and during specified periods. From and
after June 15, 2027, the Notes will be convertible at the option of the
noteholders at any time prior to the close of business on the second scheduled
trading day immediately preceding the maturity date. We will settle any
conversions of Notes by paying or delivering, as applicable, cash shares of our
common stock, par value $0.01 per share, or Common Stock, or a combination of
cash and shares of Common Stock, at our election.
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In connection with the issuance of the Notes, we paid $118.6 million, including
expenses, to enter into privately negotiated capped call transactions with
certain initial purchasers of the Notes or their respective affiliates and
certain other financial institutions, or capped call transactions. The capped
call transactions are expected generally to reduce the potential dilution upon
conversion of the Notes in the event that the market price per share of our
common stock, as measured under the terms of the capped call transactions, is
greater than the strike price of the capped call transactions, which initially
corresponds to the conversion price of the Notes, and is subject to
anti-dilution adjustments generally similar to those applicable to the
conversion rate of the Notes. The cap price of the capped call transactions will
initially be $424.00 per share, which represents a premium of approximately 100%
based on the last reported sale price of our common stock of $212.00 per share
on September 12, 2022, and is subject to certain adjustments under the terms of
the capped call transactions. If, however, the market price per share of our
common stock, as measured under the terms of the capped call transactions,
exceeds the cap price of the capped call transactions, there would nevertheless
be dilution upon conversion of the Notes to the extent that such market price
exceeds the cap price of the capped call transactions.

We used approximately $762.0 million of the net proceeds from the offering to
repay borrowings, inclusive of prepayment premiums, under our credit agreement
with Blackstone, and intend to use the remainder of the net proceeds for general
corporate purposes.

The COVID-19 Pandemic

The ongoing COVID-19 pandemic is evolving, and to date has led to the
implementation of various responses, including government-imposed quarantines,
travel restrictions, and other public health safety measures. We have and will
continue to closely monitor the spread of COVID-19 and its variants, and plan to
continue taking steps to identify and mitigate the adverse impacts on, and risks
to, our business posed by its spread and actions taken by governmental and
health authorities to address the ongoing COVID-19 pandemic. We expect to
continue to take actions as may be required or recommended by government
authorities or as we determine are in the best interests of our employees, the
patients we serve and other business partners in light of COVID-19 and variants
thereof. The extent to which COVID-19 ultimately impacts our business, results
of operations or financial condition will depend on future developments, which,
despite progress in vaccination efforts, remain highly uncertain and cannot be
predicted with confidence, such as the duration of the COVID-19 pandemic, new
strains of the virus, including any future variants that may emerge, which may
impact rates of infection and vaccination efforts, developments or perceptions
regarding the safety of vaccines, new information that may emerge concerning the
severity of COVID-19, and any additional preventative and protective actions
taken to contain the pandemic or treat its impact, among others. The estimates
of the impact on the Company's business may change based on new information that
may emerge concerning COVID-19 and the actions to contain it or treat its impact
and the economic impact on local, regional, national and international markets.
For additional information related to the actual or potential impacts of
COVID-19 on our business, please read Part II, Item 1A, "Risk Factors" of this
Quarterly Report on Form 10-Q.

Research and Development

Since our inception, we have focused on drug discovery and development programs. Research and development expenses represent a substantial percentage of our total operating expenses, as reflected by our broad pipeline of clinical development programs, which includes multiple programs in late-stage development.

Our Product Pipeline

Our broad pipeline, including five approved products and multiple late and early-stage investigational RNAi therapeutics, is focused in four STArs: Genetic Medicines; Cardio-Metabolic Diseases; Hepatic Infectious Diseases; and CNS/Ocular Diseases.


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The chart below is a summary of our commercial products and late- and early-stage development programs as of October 2022. It identifies those programs for which we have received marketing approval, the stage of our programs and our commercial rights to such programs:


                    [[Image Removed: alny-20220930_g1.gif]]

During the third quarter of 2022 and recent period, we reported the following updates from our commercially approved products and our late-stage clinical programs:

Commercial

TTR Franchise: ONPATTRO & AMVUTTRA

•We achieved global net product revenues for ONPATTRO and AMVUTTRA for the third quarter of 2022 of $145.0 million and $25.2 million, respectively.

GIVLAARI

•We achieved GIVLAARI global net product revenues for the third quarter of 2022 of $45.7 million.



OXLUMO

•We achieved OXLUMO global net product revenues for the third quarter of 2022 of $16.4 million.



Leqvio

•Our partner, Novartis, continued the launch of Leqvio in the U.S. and in other markets, with focus on patient on-boarding, removing access hurdles and enhancing medical education.


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Late-Stage Clinical Development

•We continued to advance patisiran, in development for the treatment of ATTR amyloidosis:



•Reported positive results from the APOLLO-B Phase 3 study in patients with ATTR
amyloidosis with cardiomyopathy, and announced that we remain on track to submit
an sNDA for review by the FDA by year-end.

•We continued to advance vutrisiran, in development for the treatment of ATTR amyloidosis:



•Received marketing authorization for AMVUTTRA for the treatment of hATTR
amyloidosis in adults with stage 1 or stage 2 polyneuropathy in Europe and the
UK, as well as approval for TTR type familial amyloidosis with polyneuropathy in
Japan; and

•Announced that we do not plan to conduct the optional interim analysis for the
HELIOS-B Phase 3 study in patients with ATTR amyloidosis with cardiomyopathy,
and that the study remains on track for topline results in early 2024.

•We continued to advance lumasiran for the treatment of PH1 and in development for the treatment of recurrent kidney stone disease:



•Based on the successful outcome of the ILLUMINATE-C study in children and
adults with advanced PH1, received approval from the FDA of an sNDA for OXLUMO,
expanding the indication for the treatment of PH1 to lower urinary oxalate and
plasma oxalate levels in pediatric and adult patients, and received approval
from the EMA of a Type II variation to include the ILLUMINATE-C data in the
label.

•We continued to advance cemdisiran for the treatment of complement-mediated diseases, in collaboration with our partner, Regeneron:

•Reported positive results from the Phase 2 study in patients with immunoglobulin A nephropathy, or IgAN; and

•Announced that we are working with Regeneron to finalize plans for the Phase 3 clinical development of cemdisiran in IgAN.



There is a risk that any drug discovery or development program may not produce
revenue for a variety of reasons, including the possibility that we will not be
able to adequately demonstrate the safety and effectiveness of the product
candidate or obtain approval or the desired labeling for the product candidate
from regulatory authorities. Moreover, there are uncertainties specific to any
new field of drug discovery, including RNAi. The success of ONPATTRO, GIVLAARI,
OXLUMO, AMVUTTRA or any other product candidate we develop is highly uncertain.
Due to the numerous risks associated with developing drugs, including those
risks associated with the ongoing COVID-19 pandemic, we cannot reasonably
estimate or know the nature, timing and estimated costs of the efforts necessary
to complete the development of any potential product candidate or indication, or
the period, if any, in which material net cash inflows will commence from any
approved product or indication. Any failure to complete any stage of the
development of any potential products or any approved product for an expanded
indication in a timely manner or successfully launch, market and sell any of our
commercially approved products, could have a material adverse effect on our
operations, financial position and liquidity. A discussion of some of the risks
and uncertainties associated with completing our research and development
programs within the planned timeline, or at all, and the potential consequences
of failing to do so, are set forth in Part II, Item 1A below under the heading
"Risk Factors."

Strategic Alliances

Our business strategy is to develop and commercialize a broad pipeline of RNAi
therapeutic products directed towards our four STArs. As part of this strategy,
we have entered into, and expect to enter into additional, collaboration and
licensing agreements as a means of obtaining resources, capabilities and funding
to advance our investigational RNAi therapeutic programs.

Our collaboration strategy is to form alliances that create significant value
for ourselves and our collaborators in the advancement of RNAi therapeutics as a
new class of innovative medicines. Specifically, with respect to our CNS/Ocular
Disease pipeline, in April 2019, we entered into a global, strategic
collaboration with Regeneron to discover, develop and commercialize RNAi
therapeutics for a broad range of diseases by addressing disease targets
expressed in the eye and CNS, in addition to a select number of targets
expressed in the liver. In July 2020, Regeneron exercised its
co-development/co-commercialization option on our first CNS-targeted development
candidate, ALN-APP, an investigational RNAi therapeutic in development for the
treatment of hereditary cerebral amyloid angiopathy and autosomal dominant
Alzheimer's Disease, which we are leading. We are also advancing multiple other
programs with Regeneron.

With respect to our Cardio-Metabolic pipeline, in March 2013, we entered into an
exclusive, worldwide license with MDCO (acquired by Novartis AG in January 2020)
pursuant to which MDCO was granted the right to develop, manufacture and
commercialize RNAi therapeutics targeting proprotein convertase subtilisin/kexin
type 9 for the treatment of
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hypercholesterolemia and other human diseases, including inclisiran. In March
2018, we entered into a discovery collaboration with Regeneron to identify RNAi
therapeutics for nonalcoholic steatohepatitis, or NASH, and potentially other
related diseases, and in November 2018, we and Regeneron entered into a
separate, fifty-fifty collaboration to further research, co-develop and
commercialize any therapeutic product candidates that emerge from these
discovery efforts. In April 2020, we entered into a development and
commercialization collaboration with Dicerna to advance investigational RNAi
therapeutics for the treatment of alpha-1 antitrypsin deficiency-associated
liver disease, or alpha-1 liver disease.

With respect to our Hepatic Infectious Disease pipeline, in October 2017, we
announced an exclusive licensing agreement with Vir for the development and
commercialization of RNAi therapeutics for infectious diseases, including
chronic HBV infection. In March 2020, we announced an expansion of our exclusive
licensing agreement with Vir to include the development and commercialization of
RNAi therapeutics targeting SARS-CoV-2, the virus that causes the disease
COVID-19, which we further expanded in April 2020 to include up to three
additional targets focused on host factors for SARS-CoV-2, including angiotensin
converting enzyme-2, and transmembrane protease, serine 2, and potentially a
third mutually selected host factor target. In July 2021, we notified Vir that
we elected to discontinue ALN-COV, in development for the treatment of COVID-19,
and all other COVID-19 research and development activities, based on a portfolio
prioritization in view of the availability of highly effective vaccines and
alternative treatment options. Following such discontinuation of COVID-19
related activities, we have no further obligations to work on the COVID-related
targets and Vir has no further rights to such targets under our exclusive
licensing agreement.

With respect to our Genetic Medicine pipeline, we formed a broad strategic
alliance with Sanofi in 2014. In January 2018, we and Sanofi amended our 2014
collaboration and entered into the Exclusive License Agreement, referred to as
the Exclusive TTR License, under which we have the exclusive right to pursue the
further global development and commercialization of all TTR products, including
ONPATTRO, AMVUTTRA and any back-up products, and the ALN-AT3 Global License
Terms, referred to as the AT3 License Terms, under which Sanofi has the
exclusive right to pursue the further global development and commercialization
of fitusiran and any back-up products. In April 2019, we and Sanofi agreed to
further amend the 2014 Sanofi collaboration to conclude the research and option
phase and to amend and restate the AT3 License Terms to modify certain of the
business terms.

We intend to continue to evaluate and explore partnership opportunities through
collaboration and licensing arrangements, and may enter into new collaborations
to advance certain products or disease areas. For example, in January 2022, we
announced that we and Novartis agreed to collaborate on the discovery and
development of an siRNA-based targeted therapy to restore functional liver cells
in patients with end-stage liver diseases.

We also have entered into license agreements to obtain rights to intellectual
property in the field of RNAi. In addition, because delivery of RNAi
therapeutics has historically been an important objective of our research
activities, we have entered into various collaboration and licensing
arrangements with other companies and academic institutions to gain access to
delivery technologies, including various LNP delivery technologies, and we may
enter into such agreements in the future to gain access to products or
technologies. For example, in 2021, we entered into a license and collaboration
agreement with PeptiDream to discover and develop peptide-siRNA conjugates
leveraging PeptiDream's proprietary Peptide Discovery Platform System
technology.

Critical Accounting Policies and Estimates



Our critical accounting policies are described in the "Management's Discussion
and Analysis of Financial Condition and Results of Operations" section of our
Annual Report on Form 10-K for the year ended December 31, 2021, which we filed
with the SEC on February 10, 2022. There have been no significant changes to our
critical accounting policies since the beginning of this fiscal year.

Results of Operations

The following data summarizes the results of our operations:



                                                   Three Months Ended September 30,                                                  Nine Months Ended September 30,
(In thousands, except
percentages)                       2022                2021              $ Change            % Change               2022                 2021              $ Change            % Change
Total revenues                $   264,306          $  187,633          $   76,673                  41  %       $   702,383          $   585,752          $  116,631                  20  %
Operating costs and expenses  $   522,346          $  369,310          $  153,036                  41  %       $ 1,298,841          $ 1,099,843          $  198,998                  18  %
Loss from operations          $  (258,040)         $ (181,677)         $  (76,363)                 42  %       $  (596,458)         $  (514,091)         $  (82,367)                 16  %
Total other expense, net      $  (147,903)         $  (22,559)         $ (125,344)                556  %       $  (323,514)         $   (77,751)         $ (245,763)                316  %
Net loss                      $  (405,920)         $ (204,514)         $ (201,406)                 98  %       $  (923,663)         $  (594,364)         $ (329,299)                 55  %


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Discussion of Results of Operations

Revenues

Total revenues consist of the following:



                                                       Three Months Ended September 30,                                                    Nine Months Ended September 30,
(In thousands, except
percentages)                            2022                   2021            $ Change            % Change                2022                 2021             $ Change            % Change
Net product revenues             $    232,267              $ 167,044          $ 65,223                   39  %       $   632,654            $ 463,624          $ 169,030                   36  %
Net revenues from collaborations       29,297                 20,136             9,161                   45  %            64,267              121,328            (57,061)                 (47) %
Royalty revenue                         2,742                    453             2,289                  505  %             5,462                  800              4,662                  583  %
Total                            $    264,306              $ 187,633          $ 76,673                   41  %       $   702,383            $ 585,752          $ 116,631                   20  %


Net Product Revenues

Net product revenues consist of the following, by product and region:



                                              Three Months Ended September 30,                                                    Nine Months Ended September 30,
(In thousands, except
percentages)                   2022                   2021            $ Change            % Change                2022                 2021             $ Change            % Change
ONPATTRO
United States           $     67,196              $  51,247          $ 15,949                   31  %       $   200,588            $ 153,109          $  47,479                   31  %
Europe                        57,217                 51,019             6,198                   12  %           167,185              136,576             30,609                   22  %
Rest of World                 20,537                 18,051             2,486                   14  %            67,614               46,422             21,192                   46  %
Total                        144,950                120,317            24,633                   20  %           435,387              336,107             99,280                   30  %

AMVUTTRA
United States                 25,060                      -            25,060                     N/A            25,060                    -             25,060                     N/A
Europe                           169                      -               169                     N/A               169                    -                169                     N/A
Total                         25,229                      -            25,229                     N/A            25,229                    -             25,229                     N/A

GIVLAARI
United States                 31,169                 22,372             8,797                   39  %            84,505               62,502             22,003                   35  %
Europe                        12,477                  7,568             4,909                   65  %            36,059               22,461             13,598                   61  %
Rest of World                  2,013                  1,893               120                    6  %             5,522                2,173              3,349                  154  %
Total                         45,659                 31,833            13,826                   43  %           126,086               87,136             38,950                   45  %

OXLUMO
United States                  6,383                  5,236             1,147                   22  %            18,916               13,156              5,760                   44  %
Europe                         9,348                  9,658              (310)                  (3) %            25,099               27,225             (2,126)                  (8) %
Rest of World                    698                      -               698                     N/A             1,937                    -              1,937                     N/A
Total                         16,429                 14,894             1,535                   10  %            45,952               40,381              5,571                   14  %

Total net product
revenues                $    232,267              $ 167,044          $ 65,223                   39  %       $   632,654            $ 463,624          $ 169,030                   36  %

Net product revenues increased during the three and nine months ended September 30, 2022, compared to the same periods in 2021, as a result of increased patients on ONPATTRO, AMVUTTRA, GIVLAARI, and OXLUMO therapies, offset by an unfavorable impact from foreign exchange rates on our international revenues.



We expect net product revenues to increase during 2022, as compared to 2021, as
we continue to add new patients onto our commercial products, as well as launch
these products into additional markets, assuming regulatory approvals.
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Net Revenues from Collaborations and Royalty Revenue

Net revenues from collaborations consist of the following:



                                                    Three Months Ended September 30,                                                 Nine Months Ended September 30,
(In thousands, except
percentages)                         2022                2021            $ Change            % Change                2022                  2021             $ Change            % Change
Regeneron Pharmaceuticals       $     21,979          $ 14,161          $  7,818                   55  %       $    34,405             $  90,908          $ (56,503)                 (62) %
Novartis AG                            5,803             4,160             1,643                   39  %            27,472                21,179              6,293                   30  %
Vir Biotechnology                        441             1,233              (792)                 (64) %             1,137                 8,033             (6,896)                 (86) %
Other                                  1,074               582               492                   85  %             1,253                 1,208                 45                    4  %
Total                           $     29,297          $ 20,136          $  9,161                   45  %       $    64,267             $ 121,328          $ (57,061)                 (47) %


Net revenues from collaborations increased during the three months ended
September 30, 2022, as compared to the same period in 2021, primarily due to an
increase in revenue recognized in connection with our collaboration agreement
with Regeneron, attributed to an increase in reimbursable activities under our
research services arrangement in addition to an increase in revenue recognized
associated with our clinical trial activities.

Net revenues from collaborations decreased during the nine months ended
September 30, 2022, as compared to the same periods in 2021, primarily due to a
decrease in revenue recognized in connection with our collaboration agreement
with Regeneron, attributed to reduced research and manufacturing activities and
timing of reimbursable activities.

We earn royalty revenue from global net sales of Leqvio by our partner,
Novartis. In December 2020, Leqvio received marketing authorization from the EC
for the treatment of adults with hypercholesterolemia or mixed dyslipidemia, and
in December 2021, Leqvio was approved by the FDA for the treatment of adults
with HeFH or ASCVD. During the quarter ended September 30, 2022, we recorded
$2.7 million in royalty revenue.

Recognition of our combined net revenues from collaborations and royalty revenue
is dependent on a variety of factors including the level of work reimbursed by
partners, achievement of milestones under our collaboration agreements, and
royalties associated with sales of Leqvio. We expect net revenues from
collaboration and royalty revenue to decrease in 2022, as compared to 2021,
primarily due to the timing of reimbursable activities in our collaboration with
Regeneron.

Operating Costs and Expenses

Operating costs and expenses consist of the following:



                                                       Three Months Ended September 30,                                                    Nine Months Ended September 30,
(In thousands, except
percentages)                           2022                  2021             $ Change            % Change                2022                 2021              $ Change            % Change
Cost of goods sold              $     36,507             $  28,091          $   8,416                    30  %       $    94,002          $    81,370          $  12,632                    16  %
Cost of collaborations and
royalties                              4,609                 4,572                 37                     1  %            23,549               21,110              2,439                    12  %
Research and development             245,371               194,572             50,799                    26  %           620,976              563,106             57,870                    10  %
Selling, general and
administrative                       235,859               142,075             93,784                    66  %           560,314              434,257            126,057                    29  %
Total                           $    522,346             $ 369,310          $ 153,036                    41  %       $ 1,298,841          $ 1,099,843          $ 198,998                    18  %


Cost of goods sold.

Cost of goods sold as a percentage of net product revenues decreased to 15.7%
and 14.9% for the three and nine months ended September 30, 2022, respectively,
as compared to 16.8% and 17.6% for the three and nine months ended September 30,
2021, respectively, primarily due to fully amortized intangible assets and
reduced royalties as a result of the expiry of third-party intellectual
property.

We anticipate variability in our cost of goods sold as a percentage of net
product revenues due to the timing of manufacturing runs and utilization and the
depletion of zero-cost inventories, as well as launch our approved products into
additional markets, assuming regulatory approvals. We expect cost of goods sold
will increase during 2022, as compared to 2021, primarily as a result of an
expected increase in net product sales as well as the sale of capitalized
inventory.
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Cost of collaborations and royalties.



Cost of collaborations and royalties increased during the three and nine months
ended September 30, 2022, as compared to the same periods in 2021, primarily due
to timing and demand of GalNAc material supply to our collaboration partners to
support certain product manufacturing and ongoing clinical trials.

We expect cost of collaborations and royalties to remain relatively consistent
during 2022, as compared to 2021, due to consistency in planned GalNAc material
to be supplied to our collaboration partners.

Research and development.

Research and development expenses consist of the following:



                                              Three Months Ended September 30,                                                    Nine Months Ended September 30,
(In thousands, except
percentages)                   2022                   2021            $ Change            % Change                 2022                  2021      

     $ Change            % Change
Clinical research and
outside services        $    104,762              $ 108,851          $ (4,089)                  (4) %       $    288,833             $ 290,627          $ (1,794)                  (1) %
Compensation and
related                       58,377                 47,168            11,209                   24  %            163,416               142,547            20,869                   15  %
Stock-based
compensation                  52,962                 12,417            40,545                  327  %             75,217                49,878            25,339                   51  %
Occupancy and all other
costs                         29,270                 26,136             3,134                   12  %             93,510                80,054            13,456                   17  %
Total                   $    245,371              $ 194,572          $ 50,799                   26  %       $    620,976             $ 563,106          $ 57,870                   10  %

For the three and nine months ended September 30, 2022, the increases in research and development expenses, as compared to the same periods in the prior year, were primarily due to the following:

•Increased stock-based compensation expense primarily due to the accounting for certain performance-based awards; and

•Increased compensation and related expenses as a result of increased headcount to support our R&D pipeline and development expenses associated with the KARDIA-1 and KARDIA-2 zilebesiran phase 2 studies.

Offset by:

•Decreased clinical research and outside services due to a decrease in clinical batches manufactured.

During the three and nine months ended September 30, 2022 and 2021, in connection with advancing activities under our collaboration agreements, we incurred research and development expenses, primarily related to external development and clinical expenses, including the manufacture of clinical product.

The following table summarizes research and development expenses incurred, for which we recognize net revenue, that are directly attributable to our collaboration agreements, by collaboration partner:



                                               Three Months Ended September 30,               Nine Months Ended September 30,
(In thousands)                                    2022                    2021                   2022                    2021
Regeneron Pharmaceuticals                  $         19,948          $    14,401          $         43,002          $    51,972

Other                                                   357                1,337                     1,172                7,565
Total                                      $         20,305          $    15,738          $         44,174          $    59,537


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Selling, general and administrative.

Selling, general and administrative expenses consist of the following:



                                              Three Months Ended September 30,                                                    Nine Months Ended September 30,
(In thousands, except
percentages)                   2022                   2021            $ Change            % Change                2022                 2021             $ Change            % Change
Compensation and
related                 $     70,361              $  52,075          $ 18,286                   35  %       $   197,346            $ 162,516          $  34,830                   21  %
Consulting and
professional services         59,557                 45,622            13,935                   31  %           155,138              129,887             25,251                   19  %
Stock-based
compensation                  75,156                 20,950            54,206                  259  %           112,665               71,257             41,408                   58  %
Occupancy and all other
costs                         30,785                 23,428             7,357                   31  %            95,165               70,597             24,568                   35  %
Total                   $    235,859              $ 142,075          $ 93,784                   66  %       $   560,314            $ 434,257          $ 126,057                   29  %

For the three and nine months ended September 30, 2022, the increases in selling, general and administrative expenses, as compared to the same periods in the prior year, were primarily due to the following:

•Increased stock-based compensation expense primarily due to the accounting for certain performance-based awards;

•Increased compensation and related expenses as a result of increased headcount; and

•Increased consulting and professional services expenses to support our commercial portfolio.



We expect that research and development expenses combined with selling, general
and administrative expenses will increase during 2022, as compared to 2021, as
we continue to advance and develop our platform and pipeline, advance our
product candidates, including partnered programs, into later-stage development,
prepare regulatory submissions and continue to build-out our global commercial
and compliance infrastructure and field team to support ONPATTRO, GIVLAARI,
OXLUMO, and the launch of AMVUTTRA in the U.S. and EU, as well as launch these
products into additional markets, assuming regulatory approvals. However, we
expect that certain expenses will be variable depending on the timing of
manufacturing batches, clinical trial enrollment and results, regulatory review
of our product candidates and programs, and stock-based compensation expenses
due to our determination regarding the probability of vesting for
performance-based awards.

Other (Expense) Income.

Other (expense) income consists of the following:



                                                     Three Months Ended September 30,                                                   Nine Months Ended September 30,
(In thousands, except
percentages)                        2022                 2021             $ Change             % Change               2022                2021              $ Change             % Change
Interest expense               $    (41,084)         $ (40,274)         $     (810)                    2  %       $ (126,055)         $ (106,205)         $  (19,850)                   19  %
Other (expense) income, net
Interest income                       7,820                225               7,595                 3,376  %           10,731               1,084               9,647                   890  %
Realized and unrealized
(losses) gains on marketable
equity securities                    (7,850)            18,691             (26,541)                 (142) %          (40,108)             61,273            (101,381)                 (165) %
Change in fair value of
development derivative
liability                           (25,084)             3,188             (28,272)                 (887) %          (70,776)            (19,655)            (51,121)                  260  %
Other                                (5,119)            (4,389)               (730)                   17  %          (20,720)            (14,248)             (6,472)                   45  %
Loss on the extinguishment of
debt                                (76,586)                 -             (76,586)                     N/A          (76,586)                  -             (76,586)                     N/A
Total                          $   (147,903)         $ (22,559)         $ (125,344)                  556  %       $ (323,514)         $  (77,751)         $ (245,763)                  316  %


Total other expense increased during the three and nine months ended
September 30, 2022, as compared to the same periods in 2021, primarily due to a
$76.6 million loss on the extinguishment of the Blackstone credit agreement,
increased loss as a result of a mark-to-market adjustment related to the
development derivative liability and increased realized and unrealized losses on
our marketable equity securities holdings.
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Liquidity and Capital Resources

The following table summarizes our cash flow activities:



                                                                 Nine Months Ended September 30,
(In thousands)                                                      2022                    2021
Net loss                                                    $       

(923,663) $ (594,364) Non-cash adjustments to reconcile net loss to net cash used in operating activities:

                                              536,245               250,524
Changes in operating assets and liabilities                           (21,878)             (147,712)
Net cash used in operating activities                                (409,296)             (491,552)
Net cash provided by investing activities                             309,265               140,105
Net cash provided by financing activities                             362,316               954,827

Effect of exchange rate changes on cash, cash equivalents and restricted cash

                                                    (9,049)               (5,968)
Net increase in cash, cash equivalents and restricted cash            253,236               597,412

Cash, cash equivalents and restricted cash, beginning of period

                                                                822,153               499,046

Cash, cash equivalents and restricted cash, end of period $ 1,075,389 $ 1,096,458




Operating activities

Net cash used in operating activities decreased during the nine months ended September 30, 2022, compared to the same periods ended September 30, 2021, primarily due to decreased cash disbursements related to working capital payments and stronger cash receipts from increased product sales.

Investing activities

Net cash used in investing activities increased during the nine months ended September 30, 2022, compared to the nine months ended September 30, 2021, primarily due to net activities related to our marketable debt securities.

Financing activities



Net cash provided by financing activities decreased during the nine months ended
September 30, 2022, compared to the nine months ended September 30, 2021,
primarily due to greater cash received in 2021, including $500.0 million
received from our sale of one-half of our royalty interest under the Novartis
agreement in September 2021 and $250.0 million received in connection with the
second drawdown on our credit agreement in June 2021, offset by $136.2 million
received from the issuance of convertible debt, net of repayment of credit
facility and purchase of capped call transactions in September 2022.

Additional Capital Requirements



We currently have programs focused on a number of therapeutic areas and, as of
September 30, 2022, have received regulatory approval and commercially launched
four products. However, our ongoing development efforts may not be successful
and we may not be able to commence sales of any other products or successfully
expand the indications for our approved products, including ONPATTRO, AMVUTTRA
and OXLUMO in the future. In addition, we anticipate that we will continue to
generate losses as a result of planned expenditures for research and development
activities relating to our research platform, our drug development programs,
including clinical trial and manufacturing costs, the establishment of
late-stage clinical, manufacturing, commercial and compliance capabilities,
including global operations, continued management and growth of our intellectual
property including our patent portfolio, collaborations and general corporate
activities

Our expected working and other capital requirements are described in our 2021
Annual Report on Form 10-K in "Part II, Item 7. Management's Discussion and
Analysis of Financial Condition and Results of Operations." As of September 30,
2022, other than the changes disclosed in the "Notes to Condensed Consolidated
Financial Statements" and "Liquidity and Capital Resources" section in this
Quarterly Report on Form 10-Q, there have been no other material changes to our
expected working and other capital requirements as described in our 2021 Annual
Report on Form 10-K.

Based on our current operating plan, we believe that our cash, cash equivalents
and marketable equity and debt securities as of September 30, 2022, together
with the cash we expect to generate from product sales and under our current
alliances, including milestones and royalties on Leqvio sales, will be
sufficient to enable us to advance our long-term strategic goals for at least
the next 12 months from the filing of this Quarterly Report on Form 10-Q.
However, due to numerous factors described in more detail under the caption Part
II, Item 1A, "Risk Factors" of this Quarterly Report on Form 10-Q, we may
require significant additional funds earlier than we currently expect in order
to continue to commercialize our approved products, and to develop, conduct
clinical trials for, manufacture and, if approved, commercialize additional
product candidates.
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