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Kronos Bio Reports Recent Business Progress and


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First patient dosed in expansion portion of KB-0742 Phase 1/2 study, with initial efficacy results expected in 2H 2023

Recommended Phase 2 dose and initial data from Phase 1b/2 study of lanraplenib in combination with gilteritinib in FLT3-mutated AML on track to report in Q4 2023 or Q1 2024

Discovery collaboration with Genentech underway

$247.9 million in cash, cash equivalents and investments as of December 31, 2022, providing expected cash runway into the second half of 2025

SAN MATEO, Calif. and CAMBRIDGE, Mass., March 15, 2023 (GLOBE NEWSWIRE) — Kronos Bio, Inc. (Nasdaq: KRON), a company dedicated to transforming the lives of those affected by cancer, today reported recent business progress and fourth-quarter and full-year 2022 financial results.

“We have had an exciting start to 2023, with both the announcement of our discovery collaboration with Genentech and the dosing of our first patient in the expansion cohort of our Phase 1/2 study of KB-0742,” said Norbert Bischofberger, Ph.D., president and chief executive officer of Kronos Bio. “We look forward to building upon this strong momentum and sharing additional data from each of our clinical programs later this year and over the course of 2024. KB-0742 has the potential to help patients with a broad variety of solid tumors, and we anticipate reporting initial efficacy data from that program in the second half of this year. For lanraplenib, our Phase 1b/2 study in combination with gilteritinib seeks to address a significant unmet need in relapsed/refractory FLT3-mutated AML, and we anticipate providing initial data and a recommended Phase 2 dose later this year or early next year. We continue to focus on strong clinical execution as we work to bring innovative therapies to patients with cancer.”

Fourth Quarter and Recent Company Updates

  • KB-0742
    • In December 2022, Kronos Bio announced that it had selected the recommended phase 2 dose in its ongoing Phase 1/2 study of KB-0742 in solid tumors, after reaching the target engagement goal with an acceptable safety profile. The analysis further showed that KB-0742 continues to demonstrate a differentiated pharmacokinetic (PK) profile, with oral bioavailability, long half-life, and dose-proportional exposure across all four dose levels, and low to moderate variability between patients. The dose escalation portion of the study is continuing with the goal of identifying the maximum tolerated dose.
    • The expansion portion of the trial is ongoing and includes Cohort A, for patients with MYC-amplified tumors, such as triple negative breast cancer, non-small cell lung cancer and ovarian cancer; and Cohort B, for patients with transcriptionally addicted cancers, including chordomas, sarcomas and small cell lung cancer. Both cohorts are enrolling, and in early 2023, the company dosed the first patient.
    • Additional results from the dose escalation portion of the Phase 1/2 study and initial efficacy data from expansion portion are expected to be presented at a medical conference in the second half of 2023.
  • Lanraplenib
    • In December 2022, the company presented preclinical data that demonstrated anti-leukemic activity of lanraplenib in combination with multiple targeted agents in patient-derived cell isolates and cell lines at the 64th American Society of Hematology (ASH) Annual Meeting & Exposition. These data further support the biological rationale for SYK inhibition as a treatment for AML.
    • Kronos Bio anticipates sharing initial data from the Phase 1b/2 study of lanraplenib in combination with gilteritinib in patients with relapsed/refractory FLT3-mutated acute myeloid leukemia (AML), along with a recommended Phase 2 dose (RP2D), in the fourth quarter of 2023 or first quarter of 2024.
  • Discovery Collaboration with Genentech
    • In January 2023, Kronos Bio announced that it had entered into a discovery collaboration in the field of oncology with Genentech, a member of the Roche Group, focused on discovering and developing small-molecule drugs that modulate transcription factor targets selected by Genentech. Kronos Bio will lead discovery and research activities to a defined preclinical point when Genentech will have the exclusive right to pursue further preclinical and clinical development and commercialization.
    • Under the terms of the agreement, Kronos Bio received an upfront payment of $20 million and is eligible for additional payments, which could total up to $554 million, based on reaching certain milestones, including discovery, preclinical, clinical and commercial milestones, as well as tiered royalties on any potential products that are commercialized as a result of the collaboration.

Fourth-Quarter and Full-Year 2022 Financial Highlights

  • Cash, Cash Equivalents and Investments: With its ongoing and currently planned clinical programs and $247.9 million in cash, cash equivalents and investments as of December 31, 2022, the company anticipates sufficient resources to fund its planned operations into the second half of 2025. In January 2023, the Company entered into a Collaboration and License Agreement with Genentech, Inc., to initially collaborate on two discovery research programs in oncology. Pursuant to the Agreement, the Company received an upfront payment of $20.0 million from Genentech.
  • R&D Expenses: Research and development expenses were $23.2 million for the fourth quarter of 2022, which includes non-cash stock-based compensation expense of $3.6 million. For the full year of 2022, research and development expenses were $93.7 million, which includes non-cash stock-based compensation expense of $15.0 million.
  • G&A Expenses: General and administrative expenses were $10.5 million for the fourth quarter of 2022, which includes non-cash stock-based compensation expense of $4.1 million. For the full year of 2022, general and administrative expenses were $43.4 million, which includes non-cash stock-based compensation expense of $16.2 million.
  • Net Loss: Net loss for the fourth quarter of 2022 was $31.8 million, or $0.56 per share, including non-cash stock-based compensation of $7.7 million. Net loss for the full-year 2022 was $133.2 million, or $2.37 per share, including non-cash stock-based compensation expense of $31.1 million.

About Kronos Bio, Inc.

Kronos Bio is a biopharmaceutical company that is advancing two investigational compounds in clinical trials for patients with cancer. The company is developing the CDK9 inhibitor KB-0742 as a treatment for MYC-amplified solid tumors and other transcriptionally addicted solid tumors and lanraplenib, a next-generation SYK inhibitor, for patients with FLT3-mutated acute myeloid leukemia. The company’s scientific focus is on developing medicines that target the dysregulated transcription that is the hallmark of cancer and other serious diseases.

Kronos Bio is based in San Mateo, Calif., and has a research facility in Cambridge, Mass. For more information, visit or follow the company on LinkedIn.

Forward-Looking Statements

Statements in this press release that are not statements of historical fact are forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The press release, in some cases, uses terms such as “anticipate,” “expect,” “look forward to,” “potential” or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Forward-looking statements include statements regarding Kronos Bio’s intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things, the potential of KB-0742, the anticipated reporting of initial efficacy data for KB-0742 and the timing thereof, the anticipated providing of initial data and a recommended Phase 2 dose for lanraplenib and the timing thereof, Kronos Bio’s expectations for providing data for each of its clinical programs over the course of 2024, activities and potential milestones under the discovery collaboration with Genentech, Kronos Bio’s expected cash runway, and other statements that are not historical fact. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, including, without limitation: whether Kronos Bio will be able to progress its clinical trials on the timeline anticipated, including due to risks inherent in the clinical development of novel therapeutics; risks related to Kronos Bio’s lack of experience as a company in conducting clinical trials; risks related to discovery and preclinical development activities, as well as risks associated with collaborations with third parties; the risk that results of preclinical studies and early clinical trials are not necessarily predictive of future results; and risks associated with the sufficiency of Kronos Bio’s cash resources and need for additional capital. These and other risks are described in greater detail in Kronos Bio’s filings with the Securities and Exchange Commission (SEC), including under the heading “Risk Factors” in its Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed with the SEC on November 8, 2022, and its Annual Report on Form 10-K for the year ended December 31, 2022, being filed with the SEC later today. Any forward-looking statements that are made in this press release speak only as of the date of this press release and are based on management’s assumptions and estimates as of such date. Except as required by law, Kronos Bio assumes no obligation to update the forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release.

Claudia Styslinger
Argot Partners

Leo Vartorella/David Rosen
Argot Partners

Kronos Bio, Inc.
Statements of Operations and Comprehensive Loss
(in thousands, except share and per share amounts)

  Three Months Ended
December 31,
  Year Ended
December 31,
    2022       2021       2022       2021  
Operating expenses:              
Research and development $ 23,168     $ 50,819     $ 93,715     $ 112,903  
General and administrative   10,514       11,587       43,400       38,495  
Total operating expenses   33,682       62,406       137,115       151,398  
Loss from operations   (33,682 )     (62,406 )     (137,115 )     (151,398 )
Other income (expense), net:              
Interest and other income, net   1,900       72       3,911       320  
Total other income (expense), net   1,900       72       3,911       320  
Net loss   (31,782 )     (62,334 )     (133,204 )     (151,078 )
Other comprehensive income (loss):              
Net unrealized loss on available-for-sale securities   258       (46 )     (753 )     (20 )
Net comprehensive loss $ (31,524 )   $ (62,380 )   $ (133,957 )   $ (151,098 )
Net loss per share, basic and diluted $ (0.56 )   $ (1.13 )   $ (2.37 )   $ (2.76 )
Weighted-average number of shares used to compute net loss per share, basic and diluted   56,522,785       55,358,508       56,201,398       54,753,599  

Kronos Bio, Inc.
Selected Balance Sheet Data
(in thousands, except share and per share amounts)

  December 31, 2022   December 31, 2021
Cash, cash equivalents and investments $ 247,947   $ 339,509
Total assets   294,938     391,476
Total liabilities   50,439     46,379
Total stockholders’ equity   244,499     345,097

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