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NCT Number: NCT06260514

Study of APR-1051 in Patients With Advanced Solid Tumors

The purpose of this study is to assess the safety and effectiveness of APR-1051 through the performance of a Phase 1, open-label, safety, PK, and preliminary efficacy study of oral APR-1051 in patients with advanced solid tumors.

Recruiting

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

MD Anderson Cancer Center (MDACC), Houston, Texas, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age ≥ 18 years
  • Diagnosis of advanced/metastatic solid tumor
  • Measurable or evaluable disease per RECIST version 1.1 (radiographic disease progression per PCWG3 criteria for patients with mCRPC)
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1 or Karnofsky Performance Status (KPS) ≥ 70%
  • Patients must have recovered to Grade 1 or baseline levels from toxicity or adverse events related to prior treatment for their cancer, excluding Grade ≤ 2 neuropathy, alopecia, or skin pigmentation
  • Adequate bone marrow and organ function
  • Women of child-bearing potential (WOCBP) or men of child-fathering potential must agree to use adequate contraception prior to study entry

Exclusion criteria

  • Patient has had prior systemic anti-cancer therapy (cytotoxic chemotherapy, immunotherapy, targeted therapy) within 3 weeks (6 weeks in cases of mitomycin C, nitrosourea, lomustine) or at least 5 half-lives (whichever is shorter, but no less than 2 weeks) prior to Day 1
  • Prior radiation therapy at the target lesion unless there is evidence of disease progression. If patient has had prior radiation therapy for disease progression, see Exclusion Criterion 1 for allowed interval between radiotherapy and Day 1 and recovery of AEs
  • Treatment with any investigational agent administered within 30 days or 5 half-lives, whichever is shorter, before the first dose of APR-1051
  • Major surgery within 21 days prior to Day 1
  • Concomitant treatment with other anti-cancer therapy, including chemotherapy, immunotherapy, biological therapy, radiation therapy (except palliative local radiation therapy), or other novel anti-cancer agents. Note: endocrine therapy for breast and prostate cancer is allowed along with agents to treat or prevent skeletal related events (zoledronic acid, pamidronate, denosumab)
  • Subjects with active (uncontrolled, metastatic) second malignancies or requiring therapy

Treatment and study plan

APR-1051

Drug

WEE1 Inhibitor

Primary outcomes

  1. Treatment-related adverse events

    Time frame: Day 1 to 28, each cycle is 28 days

    • Part 1 dose escalation: Incidence of adverse Events (AE), serious AEs (SAE), treatment-related AEs, AEs that would qualify as a dose-limiting toxicity (DLT), changes in clinical laboratory values, vital signs, ECG, ECHO
    • Part 1 dose escalation: Severity of adverse Events (AE), serious AEs (SAE), treatment-related AEs, and changes in clinical laboratory values, vital signs, ECG, ECHO according to National Cancer Institute Common Terminology Criteria for Adverse Events v5.0
  2. Recommended dose of APR-1051

    Time frame: Day 1 to 28, each cycle is 28 days

    •Part 1 dose escalation: Recommended Phase 2 Dose (RP2D) of APR-1051 monotherapy [Time frame: Day 1 through to start of dose expansion phase]. The RP2D of will be determined based on review of safety, tolerability, pharmacokinetics/pharmacodynamics, and preliminary efficacy data

Secondary outcomes

  1. Pharmacokinetics: Cmax/Cmin of APR-1051

    Time frame: Day 1 to 112

    Plasma concentration of APR-1051: maximum (Cmax), minimum (Cmin)

  2. Pharmacokinetics: Tmax of APR-1051

    Time frame: Day 1 to 112

    Time to peak plasma concentration of APR-1051 (Tmax)

  3. Pharmacokinetics: AUC of APR-1051

    Time frame: Day 1 to 112

    Area under plasma versus time curve (AUC) of APR-1051 max)

  4. Pharmacokinetics: t1/2 of APR-1051

    Time frame: Day 1 to 112

    Half-life of APR-1051 (t1/2)

Study contacts

Contact information is provided by the study sponsor or research team.

Senior Medical Advisor

CONTACT

[email protected]

215-948-4119

Sponsors and collaborators

Lead sponsor

Aprea Therapeutics

Industry

Registry information

Official study title

A Phase 1, Open-Label, Multicenter, First-In-Human Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of APR-1051 in Patients With Advanced Solid Tumors

Acronym: ACESOT-1051

Important dates

Study start
2024
Primary completion
2027
Study completion
2028
First posted
Feb 15, 2024
Registry last updated
Apr 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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