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Recruiting EARLY_Phase 1 NCT05636540

NCT05636540 In Vivo PARP-1 Expression With 18F-FluorThanatrace PET/CT in Patients With Pheochromocytoma and Paraganglioma

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Clinical Trial Summary
NCT ID NCT05636540
Status Recruiting
Phase EARLY_Phase 1
Sponsor Heather Wachtel
Condition Pheochromocytoma
Study Type INTERVENTIONAL
Enrollment 30 participants
Start Date 2023-07-01
Primary Completion 2026-12-31

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
[18F]FluorThanatrace ([18F]FTT)

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 30 participants in total. It began in 2023-07-01 with a primary completion date of 2026-12-31.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This study will enroll up to 30 evaluable patients with pheochromocytoma or paraganglioma who are undergoing surgical or systemic treatment. A pre-treatment 18F-FluorThanatrace (\[18F\]FTT) positron emission tomography/computed tomography (PET/CT) scan will be done prior to surgery or systemic therapy. PET/CT imaging will be used to evaluate PARP-1 expression in sites of pheochromocytoma or paraganglioma using the investigational radiotracer \[18F\]FTT. This is an observational study in that \[18F\]FTT PET/CT will not be used to direct treatment decisions. While patients and referring physicians will not be blinded to the \[18F\]FTT PET/CT results, treatment decisions will be made by the treating physicians based upon clinical criteria.

Eligibility Criteria

Inclusion Criteria: 1. Participants will be ≥ 18 years of age. 2. Clinical diagnosis of pheochromocytoma or paraganglioma based on biochemical and imaging studies At least one lesion identified on standard of care imaging (e.g. CT, MRI, FDG or 68-Gallium dotatate, other PET/CT or MIBG). 3. Standard of care germline genetic testing performed for clinical purposes or participant's consent for germline genetic testing for research purposes. 4. Participants must be informed of the investigational nature of this study and be willing to provide written informed consent and participate in this study in accordance with institutional and federal guidelines prior to study-specific procedures. Exclusion Criteria: 1. Inability to tolerate imaging procedures in the opinion of an investigator or treating physician. 2. Females who are pregnant or breastfeeding will not be eligible for this study; a urine pregnancy test will be performed in women of child-bearing potential prior to FTT injection. 3. Any current medical condition, illness, or disorder as assessed by medical record review and/or self-reported that is considered by a physician investigator to be a condition that could compromise participant safety or successful participation in the study.

Contact & Investigator

Central Contact

Heather Wachtel, MD

✉ Heather.Wachtel@pennmedicine.upenn.edu

📞 215-662-2341

Principal Investigator

Heather Wachtel, MD

PRINCIPAL INVESTIGATOR

University of Pennsylvania

Frequently Asked Questions

Who can join the NCT05636540 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Pheochromocytoma. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT05636540 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT05636540 currently recruiting?

Yes, NCT05636540 is actively recruiting participants. Contact the research team at Heather.Wachtel@pennmedicine.upenn.edu for enrollment information.

Where is the NCT05636540 trial being conducted?

This trial is being conducted at Philadelphia, United States.

Who is sponsoring the NCT05636540 clinical trial?

NCT05636540 is sponsored by Heather Wachtel. The principal investigator is Heather Wachtel, MD at University of Pennsylvania. The trial plans to enroll 30 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology