DKN-01 Development Update

• Presented initial clinical data from Part A of the DeFianCe Study of DKN-01 plus bevacizumab and chemotherapy in colorectal cancer (CRC) patients. The Company presented initial data from Part A of the DeFianCe study (NCT05480306), a Phase 2 study evaluating DKN-01 in combination with standard of care (SOC) bevacizumab and chemotherapy in second-line (2L) patients with advanced microsatellite stable (MSS) CRC patients at the 2024 American Society of Clinical Oncology (ASCO) Gastrointestinal Cancers Symposium, held in San Francisco on January 18-20, 2024 and during the Company's conference call on January 23, 2024.

• Key Findings (as of the December 6, 2023 data cutoff):

  • Across all patients enrolled (n=33):

    • Overall response rate (ORR) among response-evaluable patients (n=27) was 30% and disease control rate (DCR) was 93%, including 8 partial responses (PR) and 17 patients with a best response of stable disease (SD)

    • Median progression-free survival (PFS) was 6.3 months

    • 9 patients remained on therapy and were beyond 8.5 months

  • Enhanced activity in patients with left-sided tumors (n=25), a group that has more frequent activation of the Wnt pathway modulated by DKK1

    • 33% ORR and 100% DCR in response-evaluable population (7 PRs, 14 SDs)

    • Preliminary median PFS of 8.6 months (9 patients continuing therapy within subgroup)

  • Compelling ORR, DCR and PFS in patients with rectal/rectosigmoid carcinomas (n=15), a population with increasing incidence among young people and shown to have the highest DKK1 levels:

    • 46% ORR and 100% DCR in response-evaluable population (6 PRs, 7 SDs)

    • Preliminary median PFS of 9.4 months (6 patients continuing therapy within subgroup)

    • Higher baseline plasma DKK1 levels correlated with improved responses

• DKN-01 plus bevacizumab and chemotherapy was well-tolerated, with a majority of DKN-01 related events being low grade (Grade 1/2)

• Part B of the DeFianCe Study of DKN-01 plus bevacizumab and chemotherapy in CRC patients is ongoing, with enrollment expanded to 180 patients and expected to be completed in late Q3/early Q4 2024. The Company expanded the randomized controlled Part B of the DeFianCe study from 130 to 180 patients and included PFS in the subpopulation of patients with left-sided CRC as an additional primary endpoint. The Company expects to complete enrollment in late Q3 or early Q4 2024 with data expected in mid-2025. As of May 8, 2024, 114 patients have enrolled in Part B.

• Completion of enrollment in the randomized controlled Part C of the DisTinGuish study evaluating DKN-01 in combination with tislelizumab, BeiGene's anti-PD-1 antibody, and chemotherapy in patients with advanced gastroesophageal junction and gastric cancer. Part C of the DisTinGuish study (NCT0436380) is a Phase 2, randomized, open-label, multicenter study of DKN-01 in combination with tislelizumab and chemotherapy in first-line patients with advanced gastroesophageal adenocarcinoma. Part C enrolled 170 first-line, HER2-negative patients randomized 1:1 to evaluate DKN-01 in combination with tislelizumab and SOC chemotherapy, compared to tislelizumab and SOC chemotherapy alone. The primary objective is PFS in DKK1-high and in all patients. Secondary objectives of Part C include OS and ORR as measured by RECIST v1.1 in DKK1-high and in all patients. The Company expects to report initial data from Part C of the DisTinGuish study in the second half of 2024 or early 2025 when the PFS data are mature.

Selected First Quarter 2024 Financial Results
Net Loss was $13.8 million for the first quarter 2024, compared to $41.9 million for the same period in 2023. The decrease was primarily due to $29.6 million of in-process research and development ("IPR&D") expense associated with the Flame merger in January 2023.

Research and development expenses were $11.3 million for the first quarter 2024, compared to $38.9 million for the same period in 2023. The decrease of $27.6 million was primarily due to $29.6 million of IPR&D associated with the Flame merger. In addition, there was a decrease of $0.4 million in manufacturing costs related to clinical trial material manufacturing campaigns and a decrease of $0.1 million in consulting fees associated with R&D activities. These decreases were partially offset by an increase of $2.0 million in clinical trial costs and an increase of $0.5 million in payroll and other related expenses due to an increase in headcount of our R&D full-time employees.

General and administrative expenses were $3.5 million for the first quarter 2024, compared to $3.8 million for the same period in 2022. The decrease was due to a decrease of $0.3 million in professional fees associated with our business development activities.

Cash and cash equivalents totaled $54.9 million at March 31, 2024, exclusive of the $37.2 million net proceeds of the private placement completed in April 2024. Research and development incentive receivables, current portion, totaled $0.7 million at March 31, 2024.

About Leap Therapeutics
Leap Therapeutics (Nasdaq: LPTX) is focused on developing targeted and immuno-oncology therapeutics. Leap's most advanced clinical candidate, DKN-01, is a humanized monoclonal antibody targeting the Dickkopf-1 (DKK1) protein. DKN-01 is being developed in patients with esophagogastric, gynecologic, and colorectal cancers. FL-301, is a humanized monoclonal antibody targeting Claudin18.2, being developed in patients with gastric and pancreatic cancer. Leap also has preclinical antibody programs targeting Claudin18.2/CD137 and GDF15. For more information about Leap Therapeutics, visit https://www.leaptx.com or view our public filings with the SEC that are available via EDGAR at https://www.sec.gov or via https://investors.leaptx.com/.

FORWARD-LOOKING STATEMENTS
This press release contains forward-looking statements within the meaning of the federal securities laws. Such statements are based upon current plans, estimates and expectations of the management of Leap that are subject to various risks and uncertainties that could cause actual results to differ materially from such statements. The inclusion of forward-looking statements should not be regarded as a representation that such plans, estimates and expectations will be achieved. Words such as "anticipate," "expect," "project," "intend," "believe," "may," "will," "should," "plan," "could," "continue," "target," "contemplate," "estimate," "forecast," "guidance," "predict," "possible," "potential," "pursue," "likely," and words and terms of similar substance used in connection with any discussion of future plans, actions or events identify forward-looking statements.

All statements, other than historical facts, including statements regarding the potential safety, efficacy, and regulatory and clinical progress of Leap's product candidates; the anticipated expansion of the DeFianCe study and timing for completion of clinical trials and release of clinical trial data and the expectations surrounding the outcomes thereof; Leap's future clinical or preclinical product development plans for any of Leap's product candidates; Leap's estimations of projected cash runway; the anticipated closing date of the private placement; the amount of proceeds to be received by Leap and Leap's intended use of proceeds from the private placement; and any assumptions underlying any of the foregoing, are forward-looking statements. Important factors that could cause actual results to differ materially from Leap's plans, estimates or expectations could include, but are not limited to: (i) Leap's ability to successfully execute its clinical trials and the timing of enrollment in and cost of such clinical trials; (ii) the results of Leap's clinical trials and pre-clinical studies; (iii) Leap's ability to successfully enter into new strategic partnerships for DKN-01 or any of its other programs and to maintain its ongoing collaborations with BeiGene, NovaRock and Adimab; (iv) whether any Leap clinical trials and products will receive approval from the U.S. Food and Drug Administration or equivalent foreign regulatory agencies; (v) exposure to inflation, currency rate and interest rate fluctuations, as well as fluctuations in the market price of Leap's traded securities; and (vi) that the initiation, conduct, and completion of clinical trials, laboratory operations, manufacturing campaigns, and other studies may be delayed, adversely affected, or impacted by global conflict, or supply chain related issues. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. No representations or warranties (expressed or Implied) are made about the accuracy of any such forward-looking statements. Leap may not actually achieve the forecasts disclosed in such forward-looking statements, and you should not place undue reliance on such forward-looking statements. Such forward-looking statements are subject to a number of material risks and uncertainties including but not limited to those set forth under the caption "Risk Factors" in Leap's most recent Annual Report on Form 10-K filed with the SEC, as well as discussions of potential risks, uncertainties, and other important factors in its subsequent filings with the SEC. Any forward-looking statement speaks only as of the date on which it was made. Neither Leap, nor any of its affiliates, advisors or representatives, undertake any obligation to publicly update or revise any forward-looking statement, whether as result of new information, future events or otherwise, except as required by law. These forward-looking statements should not be relied upon as representing Leap's views as of any date subsequent to the date hereof.

CONTACT:
Douglas E. Onsi
President & Chief Executive Officer
Leap Therapeutics, Inc.
617-714-0360
[email protected]

Matthew DeYoung
Investor Relations
Argot Partners
212-600-1902
[email protected]

 

 

 

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SOURCE Leap Therapeutics, Inc.