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First-in-class IV SMARCA2 degrader and potentially best-in-class CDK9 inhibitor on track to generate potential proof-of-concept data in 2024
Highly selective oral SMARCA2 degrader PRT7732 IND expected to be filed in first half and enter Phase 1 clinical trial in second half of 2024
Recently established partnership with AbCellera to jointly discover, develop, and commercialize a portfolio of next generation precision ADCs
Current cash runway into 2026 with $232.9 million in cash, cash equivalents and marketable securities as of December 31, 2023
WILMINGTON, Del., Feb. 15, 2024 (GLOBE NEWSWIRE) -- Prelude Therapeutics Incorporated (NASDAQ:PRLD), a clinical-stage precision oncology company, today reported its financial results for the fiscal year ended December 31, 2023, and outlined key objectives for 2024.
"In 2023, we prioritized and strengthened our pipeline to focus our resources on those programs that we believe have the highest likelihood of success and the greatest opportunity to deliver potentially safer and more effective therapies for patients that are currently underserved. We made significant progress with both our first-in-class IV SMARCA2 degrader compound, PRT3789, and our potentially best-in-class CDK9 inhibitor, PRT2527, which are on track to deliver meaningful initial proof-of-concept data in 2024," stated Kris Vaddi, Ph.D., Chief Executive Officer of Prelude.
Dr. Vaddi continued, "As evidence of our confidence in the potential therapeutic value of SMARCA2 to address a wide range of cancers with SMARCA4 mutations, we are also advancing our highly selective lead oral SMARCA2 degrader into Phase 1 clinical development in the second half of 2024. With both IV and oral molecules in the pipeline, we believe that we have the optionality to deliver the most appropriate treatment based on patient need and line of therapy and maintain our lead in this emerging new class of therapeutics.
"Our partnership with AbCellera represents a strategic step to expand our pipeline, based on our core competencies in medicinal chemistry, cancer biology and clinical development. The goal of the partnership is to create a portfolio of first-in-class precision ADCs that will utilize highly selective and potent small molecules and degrader payloads discovered by Prelude, coupled with highly differentiated antibodies from AbCellera. One of our first precision ADC programs utilizes a highly potent SMARCA degrader, which we expect will allow us to build on and extend the reach of our SMARCA programs."
Clinical Program Updates and Upcoming Milestones
SMARCA2 degrader PRT3789 on track to complete monotherapy dose escalation mid-year and initiate combination with docetaxel in first half of 2024; initial proof-of concept data expected in second half of 2024
PRT3789 is a potent and highly selective first-in-class SMARCA2 degrader, designed to be used in patients with a SMARCA4 mutation. Cancers with a SMARCA4 mutation represent a high unmet medical need. Patients with the SMARCA4 mutation have poor prognosis and, currently, no effective therapies.
PRT3789 is in Phase 1 clinical development in biomarker selected SMARCA4 mutant patients. To date, PRT3789 has completed the fifth dose escalation cohort and demonstrated selective, potent and dose dependent degradation of SMARCA2 with an acceptable safety profile. Based on PK/PD and safety data today, the Company expects to conclude monotherapy dose escalation mid-2024 and identify recommended Phase 2 dose(s). In addition, enrollment of patients into back-fill cohorts enriched for NSCLC and SMARCA4 loss-of-function mutations has been initiated. Objectives for this first Phase 1 clinical trial are to establish the safety and tolerability profile of PRT3789 as both monotherapy and in combination with docetaxel, evaluate efficacy, pharmacokinetics and pharmacodynamics and determine a dose and potential indications for advancement into a registrational clinical trial.
CDK9 inhibitor PRT2527 on track to complete monotherapy dose escalation mid-2024; initiate dosing in combination with zanubrutinib in first quarter of 2024; initial hematological proof-of-concept data expected in second half of 2024
PRT2527 is a potent and selective small molecule that has the potential to avoid off target toxicity and achieve greater clinical activity than other CDK9 programs currently in development. The Company is currently advancing PRT2527 as monotherapy in hematological indications such as B-cell malignancies and acute myeloid leukemia (AML) and has initiated the combination with zanubrutinib in B-cell malignancies.
PRT2527 is currently in Phase 1 clinical development and expected to complete monotherapy dose escalation in B-cell malignancies mid-year. A second cohort of patients with AML is expected to initiate in the first half of 2024.
Oral SMARCA2 degrader PRT7732 expected to enter Phase 1 clinical trial in the second half of 2024
Prelude's discovery team has identified a series of highly selective and orally bioavailable SMARCA2 degraders. The lead oral molecule, PRT7732, is currently in investigational new drug (IND) enabling studies and on track to enter Phase 1 clinical development in the second half of 2024. PRT7732 is structurally distinct from PRT3789 and may provide clinically meaningful differences, more patient-friendly dosing and may be useful in earlier therapy lines.
Partnership with AbCellera expected to advance its first precision ADC
The AbCellera partnership, announced in November 2023, continues to progress towards the goal of delivering next-generation ADCs, combining AbCellera's antibody discovery and development engine with Prelude's expertise in medicinal chemistry and drug development. The partnership includes up to five precision ADC targets. Under the terms of the agreement, Prelude and AbCellera will jointly discover, develop, and commercialize products emerging from the collaboration. AbCellera will lead manufacturing activities and Prelude will lead clinical development and global commercialization, subject to AbCellera's option to co-promote any resulting commercial products in the United States.
Full Year 2023 Financial Results
Cash and Cash Equivalents:
Cash and cash equivalents as of December 31, 2023 were $232.9 million. The Company anticipates that its existing cash, cash equivalents and marketable securities will fund Prelude's operations into 2026.
Research and Development (R&D) Expenses:
R&D expenses for the year ended December 31, 2023 increased by $10.5 million to $103.4 million from $92.9 million for the year ended December 31, 2022. Included in research and development expenses for the year ended December 31, 2023 was $12.6 million of non-cash expense related to stock-based compensation expense, including employee stock options, compared to $11.5 million for the year ended December 31, 2022. The increase in research and development expenses was due to the timing of our clinical development programs along with an increase in non-cash stock-based compensation expense.
General and Administrative (G&A) Expenses:
G&A expenses for the year ended December 31, 2023 decreased by $1.8 million to $28.9 million compared to $30.7 million for the year ended December 31, 2022. Included in the general and administrative expenses for the year ended December 31, 2023 was $13.0 million of non-cash expense related to stock-based compensation expense, including employee stock options, as compared to $13.6 million for the same period in 2022. The decrease in general and administrative expenses was primarily due to our continued management of general and administrative expenses.
Net Loss:
Net loss for the year ended December 31, 2023 was $121.8 million or $2.02 per share, compared with a net loss of $115.4 million, or $2.44 per share, for the year ended December 31, 2022.
Posted In: PRLD
