CClinicalTrials.gg
CompletedNCT04840394Updated Nov 12, 2025

Clinical Study of BDB018: Monotherapy and in Combination With Pembrolizumab in Subjects With Advanced Solid Tumors

A Phase 1 interventional study of BDB018 and Pembrolizumab in Tumor, Solid, sponsored by Eikon Therapeutics. Completed at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-11-12.

Sponsored by Eikon Therapeutics · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Mar 2024, 2 years 6 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
1
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

A Phase 1 Open-label Dose Escalation Trial of BDB018 in Monotherapy and in Combination with Pembrolizumab in Subjects with Advanced Solid Tumors

Read the detailed description

This clinical trial is a study of an experimental drug called BDB018. BDB018 is a next-generation Toll-like receptor (TLR) 7/8 agonist that activates the immune system.

The primary objectives of this study are to evaluate the safety and tolerability of BDB018 in monotherapy and in combination with pembrolizumab (Keytruda) in subjects with unresectable or metastatic solid tumors that have relapsed or are refractory to standard treatment or for which there is no approved therapy.

This is a multi-center, open-label, dose escalation/dose expansion Phase 1 study of BDB018 in monotherapy and in combination with pembrolizumab.

The study will be conducted in two separate but independent parts: a dose escalation part with BDB018 in monotherapy and in combination with pembrolizumab and a dose expansion part of BDB018 in combination with pembrolizumab.

02

Conditions studied

  • Tumor, Solid

Browse trials for

Keywords

  • TLR7/8
  • Immuno-oncology
  • TLR 7/8 Agonist
  • EIK1001
03

In context

Neoplasms

9,365 studies on the registry are indexed under Neoplasms; 2,489 are open to participants now.

This study's enrollment of 1 is below the median of 50 across 7,253 interventional studies indexed under Neoplasms.

Browse Neoplasms studies →

Lead sponsor

Eikon Therapeutics is the lead sponsor of 10 studies on the registry; 5 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Histologically or cytologically confirmed advanced or metastatic solid tumors that have disease progression after treatment with all available therapies for metastatic disease that are known to confer clinical benefit, or are intolerant to treatment, or refuse standard treatment. Note: there is no limit to the number of prior treatment regimens
  2. Evidence of progressive disease (PD) within 3 months of signing the informed consent form.
  3. Have measurable disease

Exclusion criteria

Exclusion Criteria:

  1. Has disease that is suitable for local therapy administered with curative intent.
  2. Prior exposure to TLR7 agonists, TLR8 agonists, TLR 7/8 dual agonists, and TLR9 agonists.

Other protocol defined inclusion/exclusion criteria could apply

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
1 participant (actual)

Study arms

  • Experimental
    BDB018 in Monotherapy

    A single subject will be enrolled at each dose level in the single agent arm. Then dosage escalation will follow a traditional 3+3 dose escalation design. Each successive group of patients will be enrolled at an incrementally higher dosage until the Maximum Tolerable Dose (MTD) or Recommended Phase 2 Dose (RP2D) of single agent BDB018 is reached.

    Drug: BDB018

  • Experimental
    BDB018 in Combination with Pembrolizumab

    In the combination arm of the study, a standard 3+3 dose escalation design will be utilized for all dose levels. When the MTD or RP2D of single agent BDB018 is reached, the first dose level cohort of the combination arm will begin. Once the MTD or RP2D in combination has been determined, approximately twenty additional subjects will be enrolled in the expansion phase of the study.

    Drug: BDB018 · Drug: Pembrolizumab

Interventions

  • DrugBDB018

    BDB018 is an immunotherapy agent.

  • DrugPembrolizumab

    Pembrolizumab is a potent humanized monoclonal antibody with high specificity of binding to the PD 1 receptor. Pembrolizumab has an acceptable preclinical safety profile and is approved as an IV therapy for a variety of advanced malignancies.

06

What researchers measure

Primary outcomes

  1. Safety and Tolerability: incidence of adverse events and any dose limiting toxicity

    Safety and tolerability of BDB018 in monotherapy and in combination with pembrolizumab as measured by the incidence of adverse events and any dose limiting toxicity

    Time frame: Up to 30 months

Secondary outcomes

  1. Determine Maximum Tolerated Dose

    Determination of the maximum tolerated dose by assessing the frequency of BDB018 related and BDB018 and pembrolizumab-related adverse events using CTCAE version 5.0 to categorize adverse event severity

    Time frame: From first dose to 21 days after first dose for each patient (cycle 1)

  2. Radiographic Determination of Tumor Response after BDB018 Dosing

    Radiographic determination of tumor response in subjects dosed with BDB018 and BDB018 and pembrolizumab combination therapy using irRECIST

    Time frame: Every 63 days (3 cycles) up to 30 months after the first dose for each patient (each cycle is 21 days)

07

Study locations

3 sites
  • Florida Cancer Specialists
    Sarasota, Florida 34230, United States
  • START MidWest
    Grand Rapids, Michigan 49501, United States
  • START
    San Antonio, Texas 78229, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 12, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04840394
Lead sponsor
Eikon Therapeutics
Collaborators
Merck Sharp & Dohme LLC
Responsible party
Sponsor
First posted
Apr 12, 2021
Start date
Jun 22, 2021
Primary completion
Mar 31, 2024
Completion
Sep 30, 2024
Last update
Nov 12, 2025

Study contacts

Harry Raftopoulos, MD
study chair · Eikon Therapeutics

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion