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Study identifier: NCT06956690 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

A Phase 1/2 Clinical Trial to Assess the Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of HMBD-501 in Patients With HER3-Expressing Solid Tumors

Condition: Melanoma (Skin) · Non Small Cell Lung Cancer · Breast Cancer  ·  Sponsor: Hummingbird Bioscience

PhasePhase 1/Phase 2
Planned participants180
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This study is a Phase 1/2, first-in-human, open-label, clinical trial to assess the safety, tolerability, pharmacokinetics and preliminary efficacy of HMBD-501 in patients with advanced-stage, relapsed and/or refractory human epidermal growth factor receptor 3 (HER3)-expressing solid tumors. The study consists of 2 phases: a dose escalation phase (Phase 1) and a dose expansion phase (Phase 2). The primary objectives of Phase 1 are to characterize the overall safety and tolerability profile of increasing doses of HMBD-501 in patients with advanced-stage solid tumors and identify the recommended Phase 2 dose (RP2D) of ENV-501. During Phase 1, successive cohorts of patients will receive escalating doses of HMBD-501. The results of the dose escalation will determine the RP2D and dosing schedule of HMBD-501 to be administered in the Phase 2 part of the study. The primary objective of Phase 2 is to evaluate the preliminary clinical efficacy of HMBD-501 in dose expansion cohorts.

This description comes directly from the study's public registry record.

Talk to the study team

Kevin Heller, Dr  ·  +65 6978 9377  ·  HMBD Patients <patients@hummingbirdbio.com>

Hummingbird Bioscience Team  ·  HMBD Patients <patients@hummingbirdbio.com>

Always discuss trial participation with your own doctor first.

Locations (7)

Research SiteLa Jolla, California, United StatesRecruiting
Research SiteIndianapolis, Indiana, United StatesRecruiting
Research SiteFarmington Hills, Michigan, United StatesRecruiting
Research SiteDallas, Texas, United StatesRecruiting
Research SiteSan Antonio, Texas, United StatesRecruiting
Research SiteCampbelltown, New South Wales, AustraliaWithdrawn
Research SiteMiranda, New South Wales, AustraliaWithdrawn

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Source record: clinicaltrials.gov/study/NCT06956690