Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03715933 · ClinicalTrials.gov registry record · Phase 1

Phase 1 Study of INBRX-109 in Subjects With Locally Advanced or Metastatic Solid Tumors Including Sarcomas

A Phase 1 study of Ewing Sarcoma, sponsored by Inhibrx Biosciences.

Recruiting
Registry status
Phase 1
Development phase
321
Enrollment target
20
Study locations

NCT03715933: Recruiting Phase 1 study of Ewing Sarcoma, sponsored by Inhibrx Biosciences.

NCT03715933 is a Phase 1 study of Ewing Sarcoma that is actively recruiting participants, run by Inhibrx Biosciences. The registered enrollment target is 321 participants, above the 97-participant average among 26 other Ewing Sarcoma trials with a reported enrollment target (231% higher). The trial reports 20 study locations across 12 states. According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03715933, a Phase 1 study of Ewing Sarcoma, is actively recruiting participants, sponsored by Inhibrx Biosciences.

RECRUITING
Registry status
Phase 1
Development phase
321 participants
Enrollment target
20
Study locations

Study Summary

This is a first-in-human, open-label, non-randomized, three-part phase 1 trial of INBRX-109, which is a recombinant humanized tetravalent antibody targeting the human death receptor 5 (DR5).

Primary Outcome

Adverse events will be assessed and severity assigned by using the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), version 5.0.

Conditions Studied

Interventions

  • DRUG Temozolomide
  • DRUG Irinotecan
  • DRUG carboplatin
  • DRUG pemetrexed
  • DRUG INBRX-109

Study Locations (20)

California

  • Precision NextGen Oncology and Research - Beverly Hills
  • City of Hope - Duarte
  • Valkyrie Clinical Trials - Los Angeles
  • University of California, San Diego (UCSD) - Moores Cancer Center - San Diego
  • University of California, San Francisco (UCSF) - San Francisco
  • Sarcoma Oncology Center - Santa Monica

Michigan

  • University of Michigan - Ann Arbor
  • START Midwest Michigan, PC - Grand Rapids

Pennsylvania

  • Children's Hospital of Philadelphia- Center for Childhood Cancer Research - Philadelphia
  • University of Pennsylvania Abramson Cancer Center - Philadelphia

Texas

  • UT MD Anderson Cancer Center - Houston
  • NEXT Oncology - San Antonio

Arizona

  • HonorHealth Research Institute - Scottsdale

Colorado

  • University of Colorado Hospital - Aurora

Georgia

  • Emory University - Winship Cancer Institute - Atlanta

Illinois

  • The University of Chicago - Chicago

Trial Details

FieldValue
Enrollment Target 321 participants
Start Date 2018-10-08
Est. Completion 2026-12
Phase Phase 1
Inhibrx Biosciences

6 total trials

What NCT03715933 shows while recruiting

NCT03715933 is an interventional study that assigns participants to a tested intervention. The registered 321 participants enrollment target is mid-sized for trials with a published cap, above the 97-participant average among 26 other Ewing Sarcoma trials with a reported enrollment target (231% higher).

The record links to 1 condition, with Ewing Sarcoma appearing as the primary indexed condition, and to 5 interventions - of which Temozolomide is the first listed.

NCT03715933 names 20 study sites across 12 states, led by California, Michigan, Pennsylvania.

Frequently Asked Questions

What is clinical trial NCT03715933 about?

NCT03715933 is a clinical study titled "Phase 1 Study of INBRX-109 in Subjects With Locally Advanced or Metastatic Solid Tumors Including Sarcomas". This is a first-in-human, open-label, non-randomized, three-part phase 1 trial of INBRX-109, which is a recombinant humanized tetravalent antibody targeting the human death receptor 5 (DR5).

What is the current status of trial NCT03715933?

This trial is currently recruiting. It is a Phase 1 study. The enrollment target is 321 participants. The study started on 2018-10-08. Estimated completion is 2026-12.

What conditions does trial NCT03715933 study?

This clinical trial studies the following conditions: Ewing Sarcoma.

What interventions are being tested in trial NCT03715933?

The interventions under investigation include: Temozolomide (DRUG), Irinotecan (DRUG), carboplatin (DRUG), pemetrexed (DRUG), INBRX-109 (DRUG).

Who is sponsoring clinical trial NCT03715933?

This trial is sponsored by Inhibrx Biosciences, which has 6 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT03715933 being conducted?

This trial has 20 study locations across Arizona, California, Colorado, Georgia, Illinois. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Ewing Sarcoma

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT03715933's enrollment target sits among peer trials

321 3rd of 26 higher than 24 of 26 other Ewing Sarcoma trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Ewing Sarcoma trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT05922878 · 321 participants · Phase 2

    Study of ALTO-300 in MDD

  • NCT04090359 · 322 participants · Phase 4

    Dual Mobility Acetabular Cups in Revision TJA

  • NCT04924075 · 322 participants · Phase 2

    Belzutifan/MK-6482 for the Treatment of Advanced Pheochromocytoma/Paraganglioma (PPGL), Pancreatic Neuroendocrine Tumor (pNET), Von Hippel-Lindau (VHL) Disease-Associated Tumors, Advanced Gastrointestinal Stromal Tumor (wt GIST), or Solid Tumors With HIF-2α Related Genetic Alterations (MK-6482-015)

  • NCT02763683 · 320 participants

    Investigations of Dementia in Parkinson Disease

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03715933, the US trial registry maintained by the National Library of Medicine. NCT03715933 (mid enrollment · wide site footprint · recruiting) retrieved and formatted by PlainTrial, see methodology.