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Phase 1 N=25 Treatment

WTX-330 in Patients With Advanced or Metastatic Solid Tumors or Non-Hodgkin Lymphoma

Advanced or Metastatic Solid Tumors · Non-Hodgkin Lymphoma

Enrolled (actual)
25
Serious AEs
56.0%
Results posted
Jan 2026
Primary outcome: Primary: Incidence of Dose Limiting Toxicities (DLTs) — 0; 0; 1 Participants

Study Design & Population

Study type
Interventional
Phase
Phase 1
Interventions
WTX-330 (Drug)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
Werewolf Therapeutics, Inc.
Primary completion
Dec 2024

Outcome Measures

OutcomeResultp-value
PRIMARY
Incidence of Dose Limiting Toxicities (DLTs)
0; 0; 1
PRIMARY
Incidence of Treatment Emergent Adverse Events
3; 3; 5; 5; 9; 3
PRIMARY
Incidence of Changes in Clinical Laboratory Abnormalities
0; 0; 0; 1; 0; 0
PRIMARY
Investigator-assessed Objective Response Rate (ORR) by RECIST 1.1 and Immune ORR by iRECIST (for Solid Tumors) or Response by Lugano Criteria (for Lymphomas)
0; 33.3; 0; 0; 0; 0
SECONDARY
Plasma Concentrations of WTX-330 Cycle 1 - C Max
0.2773; 0.4290; 0.8624
SECONDARY
Plasma Concentrations of WTX-330 Cycle 1 - Time of Maximum Concentration Observation
2.40; 2.93; 3.26
SECONDARY
Plasma Concentrations of WTX-330 Cycle 1 - Half Life
2.1886; 2.7083; 3.3463
SECONDARY
Plasma Concentrations of WTX-330 Cycle 1 - AUC
0.7585; 1.1952; 1.7270
SECONDARY
Plasma Concentrations of WTX-330 Cycle 2 - C Max
0.3210; 0.6272; 1.0748
SECONDARY
Plasma Concentrations of WTX-330 Cycle 2 - Time of Maximum Concentration Observation
0.30; 1.40; 2.15
SECONDARY
Plasma Concentrations of WTX-330 Cycle 2 - Half Life
3.3296; 2.8809; 4.0216
SECONDARY
Plasma Concentrations of WTX-330 Cycle 2 - AUC
1.0247; 0.8744; 1.8042
SECONDARY
Plasma Concentrations of IL-12 Cycle 1 - C Max
1434.7; 2298.0; 3022.0
SECONDARY
Plasma Concentrations of IL-12 Cycle 1 - Time of Maximum Concentration Observation
4.90; 5.23; 6.48
SECONDARY
Plasma Concentrations of IL-12 Cycle 1 - Half Life
3.2138; 3.2643; 2.4809
SECONDARY
Plasma Concentrations of IL-12 Cycle 1 - AUC
3221.5; 5144.7; 5986.4
SECONDARY
Plasma Concentrations of IL-12 Cycle 2 - C Max
1331.5; 2165.7; 3292.8
SECONDARY
Plasma Concentrations of IL-12 Cycle 2 - Time of Maximum Concentration Observation
13.80; 0.27; 2.95
SECONDARY
Plasma Concentrations of IL-12 Cycle 2 - Half Life
2.2540; 3.8541; 2.7120
SECONDARY
Plasma Concentrations of IL-12 Cycle 2 - AUC
3569.4; 1957.5; 4349.9
SECONDARY
Antidrug Antibody (ADA) Occurrence
2; 3; 4; 5; 8; 1

Summary

A first-in-human, Phase 1, open-label, multicenter study of WTX-330 administered as a monotherapy to patients with advanced or metastatic solid tumors or non-Hodgkin lymphoma.

Eligibility Criteria

Inclusion Criteria

  • Age ≥ 18 years.
  • Dose Escalation: A diagnosis of a relapsed/refractory advanced or metastatic solid tumor for which the patient has progressed on or is intolerant of standard therapy, or for whom no standard therapy with proven benefit exists.
  • Dose Expansion: A diagnosis of a relapsed/refractory advanced or metastatic malignancy for which the patient has progressed on or is intolerant of standard therapy, or for whom no standard therapy with proven benefit exists. For Arm A, patients must have a tumor type for which a CPI is indicated/approved and demonstrate primary or secondary resistance to a standard of care anti-PD(L)1-based treatment regimen. For Arm B, patients must have a solid tumor type for which a CPI is not indicated/approved or non-Hodgkin lymphoma.
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1.
  • At least one measurable lesion per RECIST 1.1 or an evaluable lesion per Lugano classification (for lymphoma).
  • Agrees to undergo a pre-treatment and on-treatment biopsy of a primary or metastatic solid tumor or lymphoma lesion.
  • HIV-infected patients must be on antiretroviral therapy and have well-controlled disease.
  • Adequate organ and bone marrow function.
  • Willingness of men and women of reproductive potential to use highly effective birth control for the duration of treatment and for 4 months following the last dose of study drug.
  • Additional criteria may apply.

Exclusion Criteria

  • A history of another active malignancy (i.e., a second cancer) within the previous 2 years, except for localized cancers that are not related to the current cancer being treated, are considered cured, and, in the opinion of the Investigator, present a low risk of recurrence. These exceptions include but are not limited to basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the prostate, cervix, or breast.
  • Received prior treatment with IL-12, including by intratumoral injection.
  • Patients with primary CNS malignancies.
  • Presence of CNS metastases that are symptomatic and/or require local CNS directed therapy (such as XRT or surgery) or increasing doses of corticosteroids within 2 weeks prior to the first dose of study drug. Patients with treated brain metastases should be neurologically stable and receiving ≤ 10 mg per day of prednisone or equivalent prior to study entry.
  • Significant cardiovascular disease.
  • Significant electrocardiogram (ECG) abnormalities
  • Active autoimmune disease requiring systemic treatment in the past 2 years.
  • Diagnosis of immunodeficiency, on immunosuppressive therapy, or receiving chronic systemic or enteric steroid therapy (dose > 10 mg/day of prednisone or equivalent).
  • Prior receipt of an allogeneic stem cell transplant or allogeneic CAR-T cell therapy.
  • Major surgery (excluding placement of vascular access) within 2 weeks prior to the first dose of study drug.
  • Investigational agent or anticancer therapy (including chemotherapy, biologic therapy, immunotherapy, anticancer Chinese medicine, or anticancer herbal remedy) within 5 half-lives or 4 weeks (whichever is shorter) prior to the first dose of study drug.
  • Radiotherapy within 2 weeks of the start of study treatment. A 1-week washout is permitted for palliative radiation (≤ 2 weeks of radiotherapy) to non-CNS disease.
  • Any unresolved toxicities from prior therapy greater than NCI-CTCAE version 5.0 Grade 1 at the time of starting study drug with the exception of alopecia and Grade 2 platinum therapy-related neuropathy.
  • Use of sensitive substrates of major CYP450 isozymes.
  • Any illness, medical condition, organ system dysfunction, or social situation (including mental illness or substance abuse), that may interfere with a patient's ability to sign the ICF, adversely affect the patient's ability to cooperate and participate in the study, or compromise interpretation of study results.
  • Received a live vaccine with
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT05678998). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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