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CompletedNCT01973309Updated Sep 9, 2020

A Study of Vantictumab (OMP-18R5) in Combination With Paclitaxel in Locally Recurrent or Metastatic Breast Cancer

A Phase 1 interventional study of Vantictumab combined with paclitaxel in Metastatic Breast Cancer, sponsored by OncoMed Pharmaceuticals, Inc.. Completed at 4 sites in United States. Open to female participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2020-09-09.

Sponsored by OncoMed Pharmaceuticals, Inc. · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
37
Allocation
Non-randomized
Ages
18 Years to 90 Years
Sex
Female
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Study summary

This is an open-label Phase 1b dose-escalation study to assess the safety, tolerability, and PK of vantictumab when combined with paclitaxel.

Read the detailed description

Once the maximum tolerated dose (MTD) or maximum administered dose (MAD) has been determined, up to 10 patients may be enrolled in the cohort-expansion phase to better characterize the safety, tolerability and PK of vantictumab combined with paclitaxel. Up to approximately 34 patients may be enrolled into the study.

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Conditions studied

  • Metastatic Breast Cancer

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Keywords

  • Locally Recurrent
  • Metastatic Breast Cancer
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In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's enrollment of 37 is below the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

OncoMed Pharmaceuticals, Inc. is the lead sponsor of 28 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Signed Informed Consent Form
  • Age ≥18 years
  • Histologically documented adenocarcinoma of the breast with locally recurrent or metastatic disease

    o Patients with breast cancer overexpressing HER2 are not eligible.

  • Availability of tumor tissue, either archival FFPE or obtained at study entry through fresh biopsy
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • All acute treatment-related toxicity from prior therapy must have resolved to Grade ≤ 1 prior to study entry
  • Adequate hematologic and end-organ function
  • Evaluable or measurable disease per RECIST v1.1
  • For women of childbearing potential, agreement to use two effective forms of contraception

Exclusion criteria

Exclusion Criteria:

  • Known significant dose delays during prior treatment with a taxane due to drug-related toxicities
  • Prior treatment with more than two regimens of systemic cytotoxic chemotherapy for locally recurrent or metastatic disease
  • Treatment with any anti-cancer therapy within 3 weeks prior to initiation of study treatment
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Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
37 participants (actual)

Study arms

  • Experimental
    Vantictumab combined with paclitaxel

    Drug: vantictumab combined with paclitaxel - administered intravenously

    Drug: Vantictumab combined with paclitaxel

Interventions

  • DrugVantictumab combined with paclitaxel

    Vantictumab combined with paclitaxel will be administered IV.

    Also known as: (OMP-18R5)

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What researchers measure

Primary outcomes

  1. Safety and tolerability of vantictumab in combination with paclitaxel in patients with locally recurrent or metastatic breast cancer

    The maximum tolerated dose (MTD) will be determined in patients treated with vantictumab in combination with paclitaxel

    Time frame: Subjects will be treated and observed for DLT through the end of the first cycle (Days 0-28 days).

Secondary outcomes

  1. Pharmacokinetics (PK) of vantictumab when administered in combination with paclitaxel to patients with locally recurrent or metastatic breast cancer

    Apparent half life, AUC, clearance, volume of distribution

    Time frame: Plasma sample for Pharmacokinetics (PK) analysis to be obtained prior to the vantictumab infusion on Days 0, 14, 56 and 70 and at the end of the vantictumab infusion with paclitaxel infusion on Days 0 and 56.

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Study locations

4 sites
  • Cedars-Sinai Medical Center/ Samuel Oschin Comprehensive Cancer Institute
    Los Angeles, California 90048, United States
  • University of Colorado Cancer Center
    Aurora, Colorado 80045, United States
  • Texas Oncology-Baylor Charles A. Sammons Cancer Center
    Dallas, Texas 75246, United States
  • Texas Oncology-Tyler
    Tyler, Texas 75702, United States
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References and documents

Publications

  • Diamond JR, Becerra C, Richards D, Mita A, Osborne C, O'Shaughnessy J, Zhang C, Henner R, Kapoun AM, Xu L, Stagg B, Uttamsingh S, Brachmann RK, Farooki A, Mita M. Phase Ib clinical trial of the anti-frizzled antibody vantictumab (OMP-18R5) plus paclitaxel in patients with locally advanced or metastatic HER2-negative breast cancer. Breast Cancer Res Treat. 2020 Nov;184(1):53-62. doi: 10.1007/s10549-020-05817-w. Epub 2020 Aug 14. PubMed 32803633 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 9, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01973309
Lead sponsor
OncoMed Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Oct 31, 2013
Start date
Sep 2013
Primary completion
Jun 2017
Completion
Dec 2017
Last update
Sep 9, 2020

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2020. You cannot join it, but the record below documents what was studied.

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