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A Study of HFB200301 as a Single Agent and in Combination With Tislelizumab in Adult Patients With Advanced Solid Tumors

Phase 1
Recruiting
Conditions
Renal Cell Carcinoma
Sarcoma
Mesothelioma
Gastric Cancer
Melanoma
Non Small Cell Lung Cancer
Head and Neck Squamous Cell Carcinoma
Testicular Germ Cell Tumor
Cervical Cancer
Interventions
Registration Number
NCT05238883
Lead Sponsor
HiFiBiO Therapeutics
Brief Summary

The purpose of this study is to test the safety and tolerability of HFB200301 as a single agent and in combination with tislelizumab in patients with advanced cancers. There are two parts in this study. During the escalation part, groups of participants will receive increasing doses of HFB200301 as a monotherapy or in combination with tislelizumab until a safe and tolerable dose of HFB200301 as a single agent or combination therapy is determined. During the expansion part, participants will take the dose of HFB200301 as a monotherapy or in combination with tislelizumab that was determined from the escalation part of the study and will be assigned to a group based on the type of cancer the participants have.

Detailed Description

This is a Phase 1a/1b, first in human, open-label, dose escalation and expansion study in adults with advanced cancers. The study will comprise of

1. A Screening Period

2. A Treatment Period during which participants will receive the study drug on the first day of each cycle

3. A Follow-up Period

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
170
Inclusion Criteria
  • Previously received the following lines of systemic therapy for the advanced/metastatic disease:

    • Gastric cancer: at least 2 lines of therapy

    • Renal cell carcinoma: at least 2 lines of therapy

    • Melanoma:

      • BRAF V600E mutant: must have received at least 2 lines of therapy
      • BRAF V600E wild type: must have received at least 1 line of therapy
    • Sarcoma: at least 1 line of therapy

    • Testicular germ cell tumor: at least 2 lines of therapy

    • Cervical cancer: at least 2 lines of therapy

    • Mesothelioma: at least 2 lines of therapy

    • Non-small cell lung cancer: at least 2 lines of therapy

    • Head and neck squamous cell carcinoma: at least 2 lines of therapy

  • Suitable site to biopsy at pre-treatment and on-treatment

  • Measurable disease as determined by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 or modified RECIST (mRECIST) for mesothelioma

  • Eastern Cooperative Oncology Group performance status of 0 or 1

Exclusion Criteria
  • Systemic anti-cancer therapy within 2 weeks prior to start of study drug or within 4 weeks for immune-oncologic therapy

  • For soft tissue sarcoma and testicular germ cell tumor patients only: prior immune therapy

  • Therapeutic radiation therapy within the past 2 weeks

  • Prior exposure to agents targeting the Tumor Necrosis Factor Receptor type 2 (TNFR2) receptor

  • Active autoimmune disease requiring systemic treatment in the previous 2 years

  • Systemic steroid therapy (>10 mg/day of prednisone or equivalent) or any immune suppressive therapy ≤ 14 days before first dose

  • Persisting toxicity of ≥Grade 2 (≥Grade 1 for diarrhea) relating to prior anti cancer therapy with the following exceptions:

    • All grades of alopecia are acceptable
    • Endocrine dysfunction on replacement therapy is acceptable
  • Severe or unstable medical condition, including uncontrolled diabetes, coagulopathy, or unstable psychiatric condition

  • Major surgery within 4 weeks of the first dose of study drug

  • History or presence of drug or non-drug induced interstitial lung disease or pneumonitis ≥Grade 2. For combination only: non-small cell lung cancer patients, mesothelioma or patients with significantly impaired pulmonary function or who require supplemental oxygen at baseline must undergo an assessment of pulmonary function at screening

  • History of allergic reactions, immune related reactions, or cytokine release syndrome (CRS) attributed to compounds of similar chemical or biologic composition to monoclonal antibodies or any excipient of HFB200301

  • Using sensitive substrates of major cytochrome P450 (CYP450) enzymes

  • Known active malignancy, with the exception of the specific cancer under investigation in this trial, that required treatment within the previous 2 years

  • For combination only:

    • Prior randomization in a tislelizumab study regardless of the treatment arm, until the primary and key secondary endpoints of the study have read out
    • Hypersensitivity to tislelizumab or any of its excipients.

Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
Dose Escalation - HFB200301 in combination with tislelizumabHFB200301Participants will be administered HFB200301 at dose levels 1-4 in combination with one dose level of tislelizumab as an intravenous infusion to determine the combination Recommended Dose for Expansion (RDE).
Dose Expansion - HFB200301 monotherapyHFB200301Participants will be administered HFB200301 at monotherapy RDE as an intravenous infusion.
Dose Escalation - HFB200301 monotherapyHFB200301Participants will be administered HFB200301 at dose levels 1-5 as an intravenous infusion to determine the Recommended Dose for Expansion (RDE).
Dose Expansion - HFB200301 in combination with tislelizumabHFB200301Participations will be administered HFB200301 in combination with tislelizumab at combination RDE as an intravenous infusion.
Dose Escalation - HFB200301 in combination with tislelizumabTislelizumabParticipants will be administered HFB200301 at dose levels 1-4 in combination with one dose level of tislelizumab as an intravenous infusion to determine the combination Recommended Dose for Expansion (RDE).
Dose Expansion - HFB200301 in combination with tislelizumabTislelizumabParticipations will be administered HFB200301 in combination with tislelizumab at combination RDE as an intravenous infusion.
Primary Outcome Measures
NameTimeMethod
Number of participants with adverse events (AEs), serious AEs (SAEs), dose-limiting toxicities (DLTs), and tolerability (dose interruptions, reductions, and dose intensity)assessed up to 3 years
To determine a Recommended Phase 2 Dose (RP2D) during Dose Expansionassessed up to 3 years
Secondary Outcome Measures
NameTimeMethod
Objective Response Rate (ORR)assessed up to 3 years
Progression Free Survival (PFS)assessed up to 3 years
Terminal half-life (T1/2)average of 3 years
Disease Control Rate (DCR)assessed up to 3 years
Maximum serum concentration (Cmax)average of 3 years
Area under the concentration versus time curve (AUC)average of 3 years
Serum concentration for measurement of anti-HFB200301 antibodiesaverage of 3 years
To assess the pharmacodynamic (PD) effects of HFB200301 as a single agent and in combinationaverage of 3 years

Percent change in immunologic changes to immune cells

Duration of Response (DOR)assessed up to 3 years

Trial Locations

Locations (8)

USC/Norris Comprehensive Cancer Center

🇺🇸

Los Angeles, California, United States

The University of Texas, MD Anderson Cancer Center

🇺🇸

Houston, Texas, United States

NEXT Virginia Cancer Specialists

🇺🇸

Fairfax, Virginia, United States

Hospital Clinico Universitario de Valencia

🇪🇸

Valencia, Spain

Hospital Universitario Vall d'Hebron

🇪🇸

Barcelona, Spain

Hospital Universitario 12 de Octubre

🇪🇸

Madrid, Spain

Mayo Clinic

🇺🇸

Rochester, Minnesota, United States

Washington University School of Medicine

🇺🇸

Saint Louis, Missouri, United States

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