PET imaging with [18F]LY4214835 in adults with cancer and healthy volunteers

A Phase 1, Open-Label Study to Evaluate the Safety, Biodistribution, Imaging Characteristics, and Radiation Dosimetry of [18F]LY4214835 in Healthy Volunteers and Participants With Cancer

Phase 1 Interventional Eli Lilly and Company · NCT07258836

This research will test a single IV injection of [18F]LY4214835 in adults with cancer and in healthy volunteers to see if it is safe and well tolerated.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment41 (estimated)
Ages18 Years and up
SexAll
SponsorEli Lilly and Company Industry-sponsored
Drugs / interventionschemotherapy, immunotherapy
Locations6 sites (New Haven, Connecticut and 5 other locations)
Trial IDNCT07258836 on ClinicalTrials.gov

What this trial studies

This Phase 1 trial gives a single intravenous dose of the PET tracer [18F]LY4214835 to two groups: adults with confirmed cancer and imageable tumors, and overtly healthy volunteers. Participants will undergo PET imaging after the injection and be monitored with clinical exams, labs, and ECGs for safety and tolerability over roughly 35 days. The cancer cohort includes people who are treatment‑naïve or who have progressed on standard therapies and requires at least one tumor ≥15 mm for imaging. Exclusion criteria include pregnancy, breastfeeding, and certain cardiac risk factors.

Who should consider this trial

Good fit: Adults with a confirmed cancer diagnosis who are treatment‑naïve or have progressed on standard therapy and have at least one imageable tumor ≥15 mm, or healthy adults who meet screening criteria, are the intended participants.

Not a fit: People who are pregnant or breastfeeding, those with cardiac risk factors for Torsades de Pointes, or individuals without sufficiently large imageable tumors are unlikely to benefit or be eligible.

Why it matters

Potential benefit: If safe and well tolerated, this tracer could give doctors a new PET imaging tool to better visualize tumors and aid diagnosis or treatment planning.

How similar studies have performed: Other 18F-labeled PET tracers have been successfully used for tumor imaging, but this specific compound is early-stage and has limited human data.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Cohort 1

  * Have a radiologically, cytologically, or histologically confirmed diagnosis of cancer
  * Are treatment-naïve to a systemic cancer therapy, OR have a documented disease progression on standard-of-care treatment (for example, failure of chemotherapy, targeted therapy or immunotherapy)
  * Have at least 1 imageable tumor that is 15 millimeter (mm) or larger in the longest diameter
* Cohort 2

  * Are overtly healthy at the Screening Visit and upon reporting to the clinic for the positron emission tomography (PET) Imaging Visit, as determined by medical evaluation including updated medical history, vital signs, physical examination, laboratory tests, and electrocardiogram (ECG)

Exclusion Criteria:

* Are pregnant or intend to become pregnant during their participation in the study
* Are breastfeeding or intending to breastfeed during their participation in the study
* Have a history of risk factors for Torsades de Pointes (for example, heart failure, hypokalemia, family history of Long QT Syndrome)
* Are actively receiving cancer therapy or are in between cycles of treatment
* Have a marked baseline prolongation of QT/corrected QT interval (QTc) interval (for example, repeated demonstration of a QTc interval greater than (\>) 450 millisecond (ms)

Where this trial is running

New Haven, Connecticut and 5 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.