Werewolf Therapeutics Reports Third Quarter 2024 Financial Results and Provides Business Update

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Werewolf Therapeutics, Inc.
Werewolf Therapeutics, Inc.

– Interim data from ongoing Phase 1 clinical trial of WTX-330, further characterizing tolerability and activity profile, to be presented at SITC Annual Meeting –

– Monotherapy and combination expansion arms open and enrolling in ongoing Phase 1/1b clinical trial of WTX-124; initial efficacy data from monotherapy expansion arms anticipated in the first half of 2025 –

– Introduced WTX-921, a promising new development candidate and first-of-its kind IL-10 INDUKINE™ molecule for the treatment of inflammatory diseases –

– Updated cash guidance provides runway through at least the second quarter of 2026

WATERTOWN, Mass., Nov. 07, 2024 (GLOBE NEWSWIRE) -- Werewolf Therapeutics, Inc. (the “Company” or “Werewolf”) (Nasdaq: HOWL), an innovative biopharmaceutical company pioneering the development of conditionally activated therapeutics engineered to stimulate the body’s immune system for the treatment of cancer and other immune-mediated conditions, today provided a business update and reported financial results for the third quarter ended September 30, 2024.

“Werewolf continues to progress our pipeline of INDUKINE therapeutics, led by WTX-124 and WTX-330, which have together provided preliminary clinical validation of our innovative design. To date, initial datasets from both programs have highlighted well-tolerated monotherapy activity in the outpatient setting, establishing WTX-124’s potential best-in-class profile among next-generation approaches to IL-2 and WTX-330’s potential first-in-class design which enables a wider exposure and therapeutic window of IL-12 than previously achieved,” said Daniel J. Hicklin, Ph.D., President and Chief Executive Officer of Werewolf. “We continue to progress WTX-124, with both monotherapy and combination expansion arms enrolling in multiple indications. We anticipate sharing monotherapy expansion data in the first half of 2025, which we expect will guide the next steps for the development program. In addition, we look forward to presenting interim data from our Phase 1 WTX-330 clinical trial at SITC this weekend, including the emerging tolerability and clinical activity profile for WTX-330.”

Recent Highlights and Upcoming Milestones

WTX-124: a systemically delivered, conditionally activated Interleukin-2 (IL-2) INDUKINE molecule being developed as monotherapy and in combination with pembrolizumab in multiple solid tumor types.

  • Werewolf continues to progress the ongoing Phase 1/1b clinical trial evaluating WTX-124 as a monotherapy and in combination with pembrolizumab.

    • Following the selection of 18 mg WTX-124 administered intravenously every two weeks (IV Q2W) as the monotherapy recommended dose for expansion (RDE), the Company has opened monotherapy expansion arms and is actively enrolling patients with metastatic melanoma, renal cell carcinoma (RCC) and cutaneous squamous cell carcinoma (CSCC) who have failed immune checkpoint inhibitor therapy.

    • The Company has also selected 18 mg WTX-124 administered IV Q2W as its RDE for the combination with pembrolizumab and has opened combination expansion arms in metastatic melanoma, RCC, and non-small cell lung cancer (NSCLC).

    • Previously, the Company disclosed that two patients with metastatic melanoma treated in the 12 mg combination dose escalation cohort had partial and near-partial responses observed in preliminary data. Both patients now have confirmed partial responses, and both patients have remained progression free on study for more than 7 months.

    • The Company also previously disclosed that one patient with advanced CSCC treated in the 12 mg monotherapy dose escalation cohort had a documented complete response and then discontinued study drug at 21 weeks. This patient has remained in complete remission for over twelve months.

    • Cumulative biomarker data from tumor biopsies continue to provide evidence that baseline CD8+ effector T cells are relevant to clinical responses and that there is no evidence of Treg activation with treatment.

  • In the first half of 2025, Werewolf expects to provide an update on the WTX-124 clinical development program, including data from the monotherapy expansion arms that are evaluating WTX-124 in more homogenous, less heavily pre-treated patient populations to inform future development priorities.

  • Pending additional insight into the clinical profile, Werewolf intends to engage with regulators to discuss potential registrational pathways for WTX-124, including strategies for monotherapy accelerated approval.