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NCT Number: NCT04452955

A Study to Assess Safety and Efficacy of PRL3-Zumab in Patients With Solid Tumors

This is a multi-center, Phase 2, open-label, single dose level study of PRL3-zumab monotherapy in patients with unresectable or metastatic solid tumor.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Conditions

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

HonorHealth Research, Scottsdale, Arizona, United States

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About this study

The study consists of a Screening Period (Day - 14 to Day -1), a Treatment Period during which visits will occur every 2 weeks, an End of Treatment visit within 14 days of the decision to discontinue treatment for any reason, and a Safety Follow-up visit at 14 ± 4 days after the last dose of study treatment. PRL3-zumab will be administered by intravenous (IV) infusion till patient meets any of the discontinuation criteria (progressive disease, clinically or per RECIST v1.1 and iRECIST, intolerable toxicity or withdrawal of consent). One cycle of treatment will be 4 weeks (2 infusions, 12 days ±2 days apart).

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Patients with unresectable or metastatic solid tumors willing to provide signed informed consent.
  • Histopathological diagnosis and metastatic status cancer at study entry.
  • Must have received at least 1 prior line of systemic therapy for metastatic disease but no more than 3 prior lines of treatment for metastatic disease.
  • Life expectancy of more than 6 months.
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) score or less than 2.
  • Adequate organ and hematological function.
  • Measurable disease by RECIST v1.1 and iRECIST.

Exclusion criteria

  • Patient has known untreated or symptomatic central nervous system metastasis.
  • Patient is receiving systemic glucocorticoids or other immunosuppressive treatments for autoimmune disease or any other medical condition.
  • Patient has experienced a severe hypersensitivity reaction to another monoclonal antibody.
  • Patient has received treatment with any systemic anti-cancer therapies within 3 weeks prior to starting study treatment.
  • Patient has undergone radiotherapy ≤ 4 weeks prior to starting study treatment.
  • Patient has received > 3 lines of prior systemic chemotherapy for metastatic disease

Treatment and study plan

PRL3-ZUMAB

Biological

Starting dose of 6 mg/kg will be administered as IV infusion over 60 minutes every 2 weeks (±2 days)

Primary outcomes

  1. Progression free survival (PFS)

    Time frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    PFS is defined as the time from the initiation of study treatment to the date of disease progression as per RECIST v1.1 and iRECIST criteria.

Secondary outcomes

  1. Objective Response Rate (ORR)

    Time frame: Time Frame: From first dose of study drug until disease progression or end of treatment, whichever comes first.

    Description: ORR is defined as the percentage of patients with complete response (CR) or partial response (PR) as per RECIST v1.1 and iRECIST criteria from time of initiation of study treatment.

  2. Clinical benefit rate (CBR)

    Time frame: Time Frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    Description: CBR is defined as the percentage of patients with CR, PR, or stable disease (SD) as per RECIST v1.1 and iRECIST criteria based on Investigator's assessment.

  3. Overall survival (OS)

    Time frame: Time Frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    Description: OS is defined as the time from the initiation of study treatment to death from any cause.

  4. Duration of response

    Time frame: Time Frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    Description: Duration of response is defined as the time from the initial documented response (CR or PR) to the first documented sign of disease progression as per RECIST v1.1 and iRECIST criteria or death.

  5. Terminal elimination half life (t½)

    Time frame: Pre-dose and during first dose of C1, pre dose C1D15, C2D1, C2D15, C3D1, and pre dose and during the second dose of C3, pre-dose C4D1, C5D1, C6D1 and at end of treatment (up to approximately 6 months). Duration of 1 cycle is 4 weeks. C = Cycle, D = Day.

    To assess PK after single and multiple dose administration of PRL3-zumab.

  6. Maximum plasma PRL3-zumab concentration (Cmax)

    Time frame: Pre-dose and during first dose of C1, pre dose C1D15, C2D1, C2D15, C3D1, and pre dose and during the second dose of C3, pre-dose C4D1, C5D1, C6D1 and at end of treatment (up to approximately 6 months). Duration of 1 cycle is 4 weeks. C = Cycle, D = Day.

    To assess pharmacokinetics (PK) after single and multiple dose administration of PRL3-zumab.

  7. Time of Cmax (tmax)

    Time frame: Pre-dose and during first dose of C1, pre dose C1D15, C2D1, C2D15, C3D1, and pre dose and during the second dose of C3, pre-dose C4D1, C5D1, C6D1 and at end of treatment (up to approximately 6 months). Duration of 1 cycle is 4 weeks. C = Cycle, D = Day.

    To assess PK after single and multiple dose administration of PRL3-zumab.

  8. Area under the concentration time curve from pre-dose (AUCinf)

    Time frame: Pre-dose and during first dose of C1, pre dose C1D15, C2D1, C2D15, C3D1, and pre dose and during the second dose of C3, pre-dose C4D1, C5D1, C6D1 and at end of treatment (up to approximately 6 months). Duration of 1 cycle is 4 weeks. C = Cycle, D = Day.

    To assess PK after single and multiple dose administration of PRL3-zumab.

  9. Number of patients with adverse events and serious adverse events

    Time frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    To assess safety of PRL3-zumab in patients with unresectable or metastatic solid tumors.

  10. European Quality-5D (EQ-5D)

    Time frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    The system comprises 5 questions, 1 for each of 5 domains: mobility, self care, usual activities, pain/discomfort, and anxiety/depression. Each is rated according to 3 response levels ("no problems," "some problems," or "extreme problems").

  11. European Organization for Research and Treatment of Cancer-quality of life quantionnaire-C30 (EORTC-QLQ-C30)

    Time frame: From first dose of study drug until disease progression or end of treatment, whichever comes first

    Health-related quality of life is measured by EORTC-QLQ-C30, a 30 item questionnaire. This scale consists of functioning scales and symptom scales. For functioning scales higher scores suggest better functioning; for symptom scales higher scores suggest higher symptom burden.

Sponsors and collaborators

Lead sponsor

Intra-IMMUSG Pte Ltd

Industry

Collaborators

  • Parexel

Registry information

Official study title

An Open Label, Multicenter, Safety and Efficacy Phase 2 Study of PRL3-Zumab in Solid Tumors

Important dates

Study start
2020
Primary completion
2026
Study completion
2026
First posted
Jul 1, 2020
Registry last updated
Apr 22, 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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