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PHASE1RECRUITING
View on ClinicalTrials.gov

Testing Zilovertamab vedotin for b-cell acute lymphoblastic leukemia

Official title: Substudy 01A: Zilovertamab Vedotin in Pediatric and Young Adult Participants With Hematologic Malignancies or Solid Tumors (MK-9999-01A/LIGHTBEAM-U01)

LIGHTBEAM-U01 Substudy 01A: A Phase 1/2 Substudy to Evaluate the Safety and Efficacy of Zilovertamab Vedotin in Pediatric and Young Adult Participants With Hematologic Malignancies or Solid Tumors

Condition: B-cell Acute Lymphoblastic LeukemiaSponsor: Merck Sharp & Dohme LLCTarget enrollment: 90

Interventions

BIOLOGICAL

Zilovertamab vedotin

Administered via IV infusion

Canadian Sites (3)

Alberta Children's Hospital ( Site 1227)

Calgary, Alberta, Canada

RECRUITING

The Hospital for Sick Children ( Site 1225)

Toronto, Ontario, Canada

RECRUITING

McGill University Health Centre-Pediatric HematologyOncology ( Site 1223)

Montreal, Quebec, Canada

RECRUITING

Eligibility Criteria

See who this study is looking for26 criteria

The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.

Inclusion

  • +For hematological malignancies: Confirmed diagnosis of B-precursor B-ALL or DLBCL/Burkitt lymphoma according to World Health Organization (WHO) classification of neoplasms of the lymphoid tissues.
  • +For solid tumor malignancies: Histologically confirmed diagnosis of neuroblastoma or Ewing sarcoma.

Exclusion

  • Contraindication or hypersensitivity to any of the study intervention components.
  • History of human immunodeficiency virus (HIV) infection.
  • Known history of Hepatitis B or known active Hepatitis C virus infection.
  • include but are not limited to the following:
  • Inclusion CriteriaInclusion criteriaThe things you must have or be for a study to consider you.Read more →:
  • For hematological malignancies: Confirmed diagnosis of B-precursor B-ALL or DLBCL/Burkitt lymphoma according to World Health Organization (WHO) classification of neoplasms of the lymphoid tissues.
  • For solid tumor malignancies: Histologically confirmed diagnosis of neuroblastoma or Ewing sarcoma.
  • Exclusion CriteriaExclusion criteriaThe things that would prevent someone from taking part.Read more →:
  • History of solid organ transplant.
  • Clinically significant (ie, active) cardiovascular disease.
  • Known history of liver cirrhosis.
  • Ongoing Grade \>1 peripheral neuropathy.
  • Demyelinating form of Charcot-Marie-Tooth disease.
  • Diagnosed with Down syndrome.
  • Ongoing graft-versus-host disease (GVHD) of any grade or receiving systemic GVHD treatment or prophylaxis.
  • Ongoing, chronic corticosteroid therapy (exceeding 10 mg daily of prednisone equivalent). Prednisone equivalent dosing must have been stable for at least 4 weeks before Cycle 1 Day 1 (C1D1).
  • Received a strong cytochrome P450 3A4 (CYP3A4) inhibitor within 7 days or a strong CYP3A4 inducer within 14 days before the start of study intervention or expected requirement for chronic use of a strong CYP3A4 inhibitor or inducer during the study intervention period and for 30 days after the last dose of study intervention
  • Received a live or live-attenuated vaccine within 30 days before the first dose of study intervention. Administration of killed vaccines is allowed.
  • Has received an investigational agent or has used an investigational device within 4 weeks prior to study intervention administration.
  • Known additional malignancy that is progressing or has required active treatment within the past 1 year.
  • Active infection requiring systemic therapy.
  • Received prior radiotherapy within 4 weeks of start of study intervention. Participants must have recovered from all radiation-related toxicities.
  • Received prior systemic anticancer therapy including investigational agents within 4 weeks before the first dose of study intervention (except for prophylactic intrathecal chemotherapy and/or cytoreductive therapy with steroids/hydroxyurea.
  • Participants who have not adequately recovered from major surgery or have ongoing surgical complications.
5 concepts to explore on this page · up to 1,300 pointsTap any term to learn what it means.

In plain language

Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.

Learning 
What this study is

This study is testing a treatment for a condition.

Phase 1Phase 1The earliest stage of human testing, in a small group, focused on safety.Read more →/2 — a combined study that starts with early safety and continues into what the treatment does.

What is being given or done in this study: Zilovertamab vedotin.

From the trial registry

Built from these fields:

  • designModule.designInfo.primaryPurpose
  • designModule.phases
  • armsInterventionsModule.interventions[].name
How the study is run

There is only one group in this study, so there is no assignment to different treatments.

This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.

From the trial registry

Built from these fields:

  • designModule.designInfo.allocation
  • designModule.designInfo.maskingInfo.masking
Is there a placebo?

This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.

There is one group in this study.

From the trial registry

Built from this field:

  • armsInterventionsModule.armGroups[].type
Who the study is looking for

The study lists an age range of 6 months to 25 years.

The study is open to people of any sex.

The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.

From the trial registry

Built from these fields:

  • eligibilityModule.minimumAge
  • eligibilityModule.maximumAge
  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How big and how long

The study aims to enrol about 90 people.

The study is currently expected to finish around March 2029.

The main measurement is taken over: Up to 42 days.

From the trial registry

Built from these fields:

  • designModule.enrollmentInfo.count
  • statusModule.completionDateStruct.date
  • outcomesModule.primaryOutcomes[].timeFrame
What the study measures

Part 1: Number of Participants from 1 to <18 years of Age Who Experience a Dose-Limiting Toxicity (DLT) — measured over Up to 42 days.

Part 1: Number of Participants from 1 to <18 years of Age Who Experience One or More Adverse EventsAdverse eventAny medical problem that happens during a study, whether or not the treatment caused it.Read more → (AEs) — measured over Up to approximately 54 months.

Part 1: Number of Participants from 1 to <18 years of Age Who Discontinue Study Treatment Due to AEs — measured over Up to approximately 54 months.

Part 1: Number of Participants from 1 to <18 years of Age Who Receive Dose Modification Due to AEs — measured over Up to approximately 54 months.

The study lists 2 further main measurements.

From the trial registry

Built from these fields:

  • outcomesModule.primaryOutcomes[].measure
  • outcomesModule.primaryOutcomes[].timeFrame

Source: NCT06395103 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.

Not medical advice. What do these terms mean?

What is being tested — in plain terms

About Zilovertamab vedotinBiological

Administered via IV infusion

From the trial registry — its own words, unedited.

What a biological is here: A treatment made from or by living systems — such as antibodies, vaccines, or cell-based therapies.

Read the full explanation → · in clinical review

Common questions

Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.

Am I eligible for this trial?

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.

What the study lists: an age range of 6 months to 25 years.

The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.

The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.

From the trial registry
  • eligibilityModule.minimumAge
  • eligibilityModule.maximumAge
  • eligibilityModule.eligibilityCriteria
Is there a placebo?

This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.

From the trial registry
  • armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?

This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.

There is only one group in this study, so there is no assignment to different treatments.

From the trial registry
  • designModule.designInfo.maskingInfo.masking
  • designModule.designInfo.allocation
Who can join?

The study lists an age range of 6 months to 25 years.

It is open to people of any sex.

It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.

From the trial registry
  • eligibilityModule.minimumAge
  • eligibilityModule.maximumAge
  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How long would this take?

The study's main measurement is taken over: Up to 42 days.

The study as a whole is currently expected to finish around 2029-03-31.

How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.

From the trial registry
  • outcomesModule.primaryOutcomes[].timeFrame
  • statusModule.completionDateStruct.date
How many people are taking part?

The study aims to enrol about 90 people.

From the trial registry
  • designModule.enrollmentInfo.count
Where is this happening?

This study lists 6 locations, including: Calgary, Alberta, Canada; Toronto, Ontario, Canada; Montreal, Quebec, Canada; Grand Rapids, Michigan, United States; New York, New York, United States; Valhalla, New York, United States.

Sites can open and close during a study, so confirm with the team before travelling.

From the trial registry
  • trial_locations

About This Trial

Substudy 01A is part of a platform study. The purpose of this study is to assess the efficacy and safety of zilovertamab vedotin in pediatric participants with relapsed or refractory B-cell acute lymphoblastic leukemia (B-ALL), diffuse large B-cell lymphoma (DLBCL)/Burkitt lymphoma, or neuroblastoma and in pediatric and young adult participants with Ewing sarcoma.

Other Sites (3)

Corewell Health ( Site 1001)

Grand Rapids, Michigan, United States

Memorial Sloan Kettering Cancer Center ( Site 1010)

New York, New York, United States

New York Medical College ( Site 1023)

Valhalla, New York, United States

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This page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.