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AMGEN PRESENTS NEW LUMAKRAS® (SOTORASIB) PLUS CHEMOTHERAPY DATA IN FIRST-LINE KRAS G12C NSCLC AT WCLC

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Amgen announces positive data from Phase 1b study of LUMAKRAS in first-line treatment of KRAS G12C-mutated NSCLC, with a confirmed objective response rate of 65% and disease control rate of 100%. Phase 3 study initiated.
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  • Confirmed objective response rate of 65% in first-line treatment
  • Disease control rate of 100%
  • Phase 3 study initiated
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  • None.

In Phase 1b Study, Patients Treated in First-Line Demonstrated a Confirmed Objective Response Rate of 65%

THOUSAND OAKS, Calif., Sept. 10, 2023 /PRNewswire/ -- Amgen (NASDAQ:AMGN) today announced exciting data from a study arm of the CodeBreaK 101 clinical trial, a Phase 1b study evaluating LUMAKRAS® (sotorasib) with carboplatin and pemetrexed in adult patients with KRAS G12C-mutated advanced non-small cell lung cancer (NSCLC). These results were featured in an oral presentation at the International Association for the Study of Lung Cancer (IASLC) 2023 World Conference on Lung Cancer (WCLC) in Singapore on Sunday, September 10.

In patients treated in the first-line setting (n=20), the confirmed objective response rate (ORR) was 65%, with a 100% disease control rate (DCR) (95% CI: 83.2, 100). In assessable patients in the second-line setting (n=13), the ORR was 54%, with a DCR of 85% (95% CI: 54.6, 98.1). Among patients with protein ligand-1 (PD-L1) expression less than 1%, the ORR was 62% in the first-line setting and 50% in the second-line setting. With a median follow-up of 3.0 months, preliminary rapid and durable responses were observed. Progression-free survival (PFS) and overall survival (OS) were immature.

"We are delighted to see the positive data from the global CodeBreaK 101 trial further validate our approach to move LUMAKRAS earlier within the treatment paradigm through novel therapeutic combinations," said David M. Reese, M.D., executive vice president of Research and Development at Amgen. "Notably, these results follow and further expand upon the Phase 2 investigator-led data demonstrating favorable efficacy and safety of LUMAKRAS plus carboplatin and pemetrexed in the first-line treatment of patients with KRAS G12C-mutated NSCLC."

The LUMAKRAS plus chemotherapy combination reported treatment-related adverse events (TRAEs) consistent with LUMAKRAS and other platinum doublet-based approaches. The most common TRAEs were neutropenia/neutrophil count decrease (53%), anemia (39%) and thrombocytopenia/platelet count decrease (37%). No fatal adverse events occurred.

"Combination treatment is an important approach to prevent or delay the onset of drug resistance and improve the depth and durability of targeted response in KRAS G12C­­-mutated NSCLC," said Jeffrey M. Clarke, M.D., oncologist and associate professor of medicine, Duke Cancer Institute at Duke University. "The CodeBreaK 101 results show exciting efficacy with sotorasib plus chemotherapy and, importantly for a combination treatment, a safety profile consistent with the individual therapies. These data warrant continued investigation in larger trials."

Based on these results, Amgen has initiated a Phase 3 study of LUMAKRAS plus carboplatin and pemetrexed in first-line KRAS G12C-mutant and negative for programmed cell death PD-L1 advanced NSCLC (CodeBreaK 202; NCT05920356), with enrollment expected to start before the end of 2023.

About CodeBreaK 101

CodeBreaK 101 (NCT04185883) is a global Phase 1b/2 clinical trial evaluating the safety, tolerability, pharmacokinetics, and efficacy of sotorasib in combination with other anticancer therapies in patients with advanced solid tumors and the KRAS G12C mutation. Subprotocol F of the Phase 1b trial is assessing the safety, tolerability, pharmacokinetics, and efficacy of sotorasib in combination with carboplatin and pemetrexed with or without pembrolizumab maintenance, with docetaxel, or with carboplatin and paclitaxel in patients with KRAS G12C-mutated NSCLC.1

About LUMAKRAS®/LUMYKRAS® (sotorasib) 

Amgen took on one of the toughest challenges of the last 40 years in cancer research by developing LUMAKRAS/LUMYKRAS, a KRASG12C inhibitor.2 LUMAKRAS/LUMYKRAS has demonstrated a positive benefit-risk profile with rapid, deep, and durable anticancer activity in patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) harboring the KRAS G12C mutation with a once daily oral formulation.3

Amgen is progressing the largest and broadest global KRASG12C inhibitor development program with unparalleled speed and exploring more than 10 sotorasib combination regimens, with clinical trial sites spanning five continents. To date, over 6,500 patients around the world have received LUMAKRAS/LUMYKRAS through the clinical development program and commercial use. 

In May 2021, LUMAKRAS was the first KRASG12C inhibitor to receive regulatory approval with its approval in the U.S., under accelerated approval. LUMAKRAS/LUMYKRAS is also approved in the European Union, Japan, United Arab Emirates, South Korea, Hong Kong, Switzerland, Taiwan, Turkey, Thailand, Qatar, Australia, Argentina, Brazil, Canada, Great Britain, Kuwait, Macao, Singapore, Mexico, Israel, Bulgaria, Hungary, Romania, and Russia. Additionally, Amgen has submitted MAAs in Colombia, Malaysia and Saudi Arabia.

LUMAKRAS/LUMYKRAS is also being studied in multiple other solid tumors.4 

About Advanced Non-Small Cell Lung Cancer and the KRAS G12C Mutation

Lung cancer is the leading cause of cancer-related deaths worldwide, and it accounts for more deaths worldwide than colon cancer, breast cancer and prostate cancer combined.5 Overall survival rates for NSCLC are improving but remain poor for patients with advanced disease, and 5-year survival is only 9% for those with metastatic disease.6

KRAS G12C is the most common KRAS mutation in NSCLC.7 About 13% of patients with non-squamous NSCLC harbor the KRAS G12C mutation.8 Unmet medical need remains high and treatment options are limited for NSCLC patients with the KRAS G12C mutation whose first-line treatment has failed to work or has stopped working. The outcomes with other approved therapies are suboptimal, with a median progression-free survival of approximately four months following second-line treatment of KRAS G12C-mutated NSCLC.9

LUMAKRAS® (sotorasib) U.S. Indication 

LUMAKRAS is indicated for the treatment of adult patients with KRAS G12C-mutated locally advanced or metastatic non-small cell lung cancer (NSCLC), as determined by an FDA-approved test, who have received at least one prior systemic therapy. 

This indication is approved under accelerated approval based on overall response rate (ORR) and duration of response (DOR). Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). 

LUMAKRAS® (sotorasib) Important U.S. Safety Information 

Hepatotoxicity 

  • LUMAKRAS can cause hepatotoxicity, which may lead to drug-induced liver injury and hepatitis.
  • Among 357 patients who received LUMAKRAS in CodeBreaK 100, hepatotoxicity occurred in 1.7% (all grades) and 1.4% (Grade 3). A total of 18% of patients who received LUMAKRAS had increased alanine aminotransferase (ALT)/increased aspartate aminotransferase (AST); 6% were Grade 3 and 0.6% were Grade 4. In addition to dose interruption or reduction, 5% of patients received corticosteroids for the treatment of hepatotoxicity.
  • Monitor liver function tests (ALT, AST and total bilirubin) prior to the start of LUMAKRAS every 3 weeks for the first 3 months of treatment, then once a month or as clinically indicated, with more frequent testing in patients who develop transaminase and/or bilirubin elevations.
  • Withhold, dose reduce or permanently discontinue LUMAKRAS based on severity of adverse reaction.

Interstitial Lung Disease (ILD)/Pneumonitis 

  • LUMAKRAS can cause ILD/pneumonitis that can be fatal. Among 357 patients who received LUMAKRAS in CodeBreaK 100, ILD/pneumonitis occurred in 0.8% of patients, all cases were Grade 3 or 4 at onset, and 1 case was fatal. LUMAKRAS was discontinued due to ILD/pneumonitis in 0.6% of patients.
  • Monitor patients for new or worsening pulmonary symptoms indicative of ILD/pneumonitis (e.g., dyspnea, cough, fever). Immediately withhold LUMAKRAS in patients with suspected ILD/pneumonitis and permanently discontinue LUMAKRAS if no other potential causes of ILD/pneumonitis are identified.

Most Common Adverse Reactions 

  • The most common adverse reactions occurring in ≥ 20% were diarrhea, musculoskeletal pain, nausea, fatigue, hepatotoxicity and cough.

Drug Interactions 

  • Advise patients to inform their healthcare provider of all concomitant medications, including prescription medicines, over-the-counter drugs, vitamins, dietary and herbal products.
  • Inform patients to avoid proton pump inhibitors and H2 receptor antagonists while taking LUMAKRAS.
  • If coadministration with an acid-reducing agent cannot be avoided, inform patients to take LUMAKRAS 4 hours before or 10 hours after a locally acting antacid.

Please see LUMAKRAS full Prescribing Information.  

About Amgen Oncology 

At Amgen Oncology, our mission to serve patients drives all that we do. That's why we're relentlessly focused on accelerating the delivery of medicines that have the potential to empower all angles of care and transform lives of people with cancer. 

For the last four decades, we have been dedicated to discovering the firsts that matter in oncology and to finding ways to reduce the burden of cancer. Building on our heritage, Amgen continues to advance the largest pipeline in the Company's history, moving with great speed to advance those innovations for the patients who need them. 

For more information, follow us on www.twitter.com/amgenoncology

About Amgen 

Amgen is committed to unlocking the potential of biology for patients suffering from serious illnesses by discovering, developing, manufacturing and delivering innovative human therapeutics. This approach begins by using tools like advanced human genetics to unravel the complexities of disease and understand the fundamentals of human biology. 

Amgen focuses on areas of high unmet medical need and leverages its expertise to strive for solutions that improve health outcomes and dramatically improve people's lives. A biotechnology pioneer since 1980, Amgen has grown to be one of the world's leading independent biotechnology companies, has reached millions of patients around the world and is developing a pipeline of medicines with breakaway potential. 

Amgen is one of the 30 companies that comprise the Dow Jones Industrial Average and is also part of the Nasdaq-100 index. In 2022, Amgen was named one of the "World's Best Employers" by Forbes and one of "America's 100 Most Sustainable Companies" by Barron's.

For more information, visit Amgen.com and follow us on X (formerly known as Twitter), LinkedIn, Instagram, TikTok, YouTube and Threads

Amgen Forward-Looking Statements

This news release contains forward-looking statements that are based on the current expectations and beliefs of Amgen. All statements, other than statements of historical fact, are statements that could be deemed forward-looking statements, including any statements on the outcome, benefits and synergies of collaborations, or potential collaborations, with any other company (including BeiGene, Ltd. or Kyowa-Kirin Co., Ltd.), the performance of Otezla® (apremilast) (including anticipated Otezla sales growth and the timing of non-GAAP EPS accretion), the Teneobio, Inc. acquisition, the ChemoCentryx, Inc. acquisition, or the proposed acquisition of Horizon Therapeutics plc (including the potential outcome of any litigation with the Federal Trade Commission, prospective performance and outlook of Horizon's business, performance and opportunities and any potential strategic benefits, synergies or opportunities expected as a result of such acquisition), as well as estimates of revenues, operating margins, capital expenditures, cash, other financial metrics, expected legal, arbitration, political, regulatory or clinical results or practices, customer and prescriber patterns or practices, reimbursement activities and outcomes, effects of pandemics or other widespread health problems on our business, outcomes, progress, and other such estimates and results. Forward-looking statements involve significant risks and uncertainties, including those discussed below and more fully described in the Securities and Exchange Commission reports filed by Amgen, including our most recent annual report on Form 10-K and any subsequent periodic reports on Form 10-Q and current reports on Form 8-K. Unless otherwise noted, Amgen is providing this information as of the date of this news release and does not undertake any obligation to update any forward-looking statements contained in this document as a result of new information, future events or otherwise.

No forward-looking statement can be guaranteed and actual results may differ materially from those we project. Discovery or identification of new product candidates or development of new indications for existing products cannot be guaranteed and movement from concept to product is uncertain; consequently, there can be no guarantee that any particular product candidate or development of a new indication for an existing product will be successful and become a commercial product. Further, preclinical results do not guarantee safe and effective performance of product candidates in humans. The complexity of the human body cannot be perfectly, or sometimes, even adequately modeled by computer or cell culture systems or animal models. The length of time that it takes for us to complete clinical trials and obtain regulatory approval for product marketing has in the past varied and we expect similar variability in the future. Even when clinical trials are successful, regulatory authorities may question the sufficiency for approval of the trial endpoints we have selected. We develop product candidates internally and through licensing collaborations, partnerships and joint ventures. Product candidates that are derived from relationships may be subject to disputes between the parties or may prove to be not as effective or as safe as we may have believed at the time of entering into such relationship. Also, we or others could identify safety, side effects or manufacturing problems with our products, including our devices, after they are on the market.

Our results may be affected by our ability to successfully market both new and existing products domestically and internationally, clinical and regulatory developments involving current and future products, sales growth of recently launched products, competition from other products including biosimilars, difficulties or delays in manufacturing our products and global economic conditions. In addition, sales of our products are affected by pricing pressure, political and public scrutiny and reimbursement policies imposed by third-party payers, including governments, private insurance plans and managed care providers and may be affected by regulatory, clinical and guideline developments and domestic and international trends toward managed care and healthcare cost containment. Furthermore, our research, testing, pricing, marketing and other operations are subject to extensive regulation by domestic and foreign government regulatory authorities. Our business may be impacted by government investigations, litigation and product liability claims. In addition, our business may be impacted by the adoption of new tax legislation or exposure to additional tax liabilities. If we fail to meet the compliance obligations in the corporate integrity agreement between us and the U.S. government, we could become subject to significant sanctions. Further, while we routinely obtain patents for our products and technology, the protection offered by our patents and patent applications may be challenged, invalidated or circumvented by our competitors, or we may fail to prevail in present and future intellectual property litigation. We perform a substantial amount of our commercial manufacturing activities at a few key facilities, including in Puerto Rico, and also depend on third parties for a portion of our manufacturing activities, and limits on supply may constrain sales of certain of our current products and product candidate development. An outbreak of disease or similar public health threat, such as COVID-19, and the public and governmental effort to mitigate against the spread of such disease, could have a significant adverse effect on the supply of materials for our manufacturing activities, the distribution of our products, the commercialization of our product candidates, and our clinical trial operations, and any such events may have a material adverse effect on our product development, product sales, business and results of operations. We rely on collaborations with third parties for the development of some of our product candidates and for the commercialization and sales of some of our commercial products. In addition, we compete with other companies with respect to many of our marketed products as well as for the discovery and development of new products. Further, some raw materials, medical devices and component parts for our products are supplied by sole third-party suppliers. Certain of our distributors, customers and payers have substantial purchasing leverage in their dealings with us. The discovery of significant problems with a product similar to one of our products that implicate an entire class of products could have a material adverse effect on sales of the affected products and on our business and results of operations. Our efforts to collaborate with or acquire other companies, products or technology, and to integrate the operations of companies or to support the products or technology we have acquired, may not be successful. There can be no guarantee that we will be able to realize any of the strategic benefits, synergies or opportunities arising from the Horizon acquisition, and such benefits, synergies or opportunities may take longer to realize than expected.  We may not obtain regulatory clearance to acquire Horizon or be able to successfully integrate Horizon, and such acquisition or integration may take longer, be more difficult or cost more than expected. A breakdown, cyberattack or information security breach of our information technology systems could compromise the confidentiality, integrity and availability of our systems and our data. Our stock price is volatile and may be affected by a number of events. Our business and operations may be negatively affected by the failure, or perceived failure, of achieving our environmental, social and governance objectives. The effects of global climate change and related natural disasters could negatively affect our business and operations. Global economic conditions may magnify certain risks that affect our business. Our business performance could affect or limit the ability of our Board of Directors to declare a dividend or our ability to pay a dividend or repurchase our common stock. We may not be able to access the capital and credit markets on terms that are favorable to us, or at all.

The scientific information discussed in this news release related to our product candidates is preliminary and investigative. Such product candidates are not approved by the U.S. Food and Drug Administration, and no conclusions can or should be drawn regarding the safety or effectiveness of the product candidates. [Further,] any scientific information discussed in this news release relating to new indications for our products is preliminary and investigative and is not part of the labeling approved by the U.S. Food and Drug Administration for the products. The products are not approved for the investigational use(s) discussed in this news release, and no conclusions can or should be drawn regarding the safety or effectiveness of the products for these uses.

CONTACT: Amgen, Thousand Oaks 
Elissa Snook, 609-251-1407 (media)
Jessica Akopyan, 805-440-5721 (media) 
Justin Claeys, 805-559-0072 (investors)

1 ClinicalTrials.gov. CodeBreaK 101. 2023. Available at: https://classic.clinicaltrials.gov/ct2/show/NCT04185883. Accessed on July 27, 2023.
2 Canon J, et al. Nature. 2019;575: 217–223.
3 Skoulidis F, et al. N Engl J Med. 2021;384:2371-2381.
4 Hong DS, et al. N Engl J Med. 2020;383:1207-1217.
5 Sung H, et al. CA Cancer J Clin. 2021;71:209-249.
6 American Cancer Society. Lung Cancer Survival Rates. 2023. Available at: https://www.cancer.org/cancer/lung-cancer/detection-diagnosis-staging/survival-rates.html. Accessed on July 27, 2023.
7 Arbour KC, et al. Clin Cancer Res. 2018;24:334-340.
8 Nassar AF, et al. N Engl J. Med. 2021;384:185-187.
9 Spira Al, et al. Lung Cancer. 2021;159:1-9.

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