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Phase I

A Phase 1, Open Label, Multiple Dose, Dose Escalation and Expansion Study to Investigate the Safety, Tolerability, Pharmacokinetics and Antitumor Activity of the PTK7-Targeted Antibody-drug Conjugate DAY301 in Patients With Locally Advanced or Metastatic Solid Tumors

  • Study HIC#:2000039018
  • Last Updated:03/31/2025

This is a Phase 1a/1b, open-label, dose escalation and expansion study to evaluate the safety and anti-tumor activity of DAY301, a PTK7-directed antibody-drug conjugate in patients with advanced or metastatic solid tumors. The study comprises of 2 phases: Phase 1a dose escalation where patients will be administered DAY301 at escalating dose levels to assess safety and tolerability, and to determine the maximum tolerated dose (MTD) and/or the recommended dose (RD); In Phase 1b dose expansion, DAY301 will be evaluated in dose expansion cohorts.

    Contact Us

    For more information about this study, including how to volunteer, contact:

    Ingrid Palma

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    Eligibility Criteria

    Inclusion Criteria:

    • Patients with histologically or cytologically confirmed diagnosis of advanced or metastatic solid tumors of the following histologies:
    • Ovarian cancer
    • Esophageal squamous cell carcinoma
    • Triple-negative breast cancer
    • Non-small cell lung cancer
    • Small cell lung cancer
    • Head and neck squamous cell carcinoma
    • Gastric/gastroesophageal junction adenocarcinoma
    • Cervical squamous cell carcinoma
    • Endometrial cancers

    (Patients must have been previously treated with standard of care systemic therapy, or for whom no standard therapy is available).

    • Availability of tumor tissue sample (either an archival specimen or a fresh biopsy) at screening
    • Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST v1.1).
    • ECOG performance status of 0 or 1.
    • Adequate organ function.

    Exclusion Criteria:

    • Prior use of PTK7 targeting treatment.
    • Active or progressing brain metastases or evidence of leptomeningeal disease.
    • Persistent toxicities from previous systemic antineoplastic treatments of Grade >1, excluding alopecia and vitiligo.
    • Systemic antineoplastic therapy within 5 half-lives or 4 weeks, whichever is shorter, prior to first dose of the study drug, including investigational agents.

    Principal Investigator

    Sub-Investigators

    For more information about this study, including how to volunteer, contact: