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PET Imaging Using 64Cu-Tz-SarAr and hu5B1-TCO in People With Pancreatic, Colorectal, Bladder Cancer or Cancers With Elevated CA19.9

A Phase I Study of Pretargeted PET Imaging Using 64Cu-Tz-SarAr and a Trans-Cyclooctene-Modified Humanized 5B1 Immunoconjugate (hu5B1-TCO) in Patients With Pancreatic, Bladder Cancer, Gastrointestinal Malignancies or Solid Tumors With Elevated CA19-9

Status
Withdrawn
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05737615
Enrollment
0
Registered
2023-02-21
Start date
2023-02-10
Completion date
2026-08-07
Last updated
2026-08-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Metastatic Pancreatic Cancer, Metastatic Pancreatic Ductal Adenocarcinoma, Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, Primary Pancreatic Ductal Adenocarcinoma

Keywords

Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, Metastatic Pancreatic Ductal Adenocarcinoma, Primary Pancreatic Ductal Adenocarcinoma, Metastatic Pancreatic Cancer, hu5B1-TCO, 64Cu-Tz-SarAr, 20-409, Memorial Sloan Kettering Cancer Center

Brief summary

The purpose of this study is to find the highest safe dose of hu5B1-TCO and the best dosing schedule of hu5B1-TCO and 64Cu-Tz-SarAr for finding cancer cells that are CA19-9 positive. This study will also help to find out how much radiation the body is exposed to when 64Cu-Tz-SarAr is used, and provide information on the way the body absorbs, distributes, and gets rid of 64Cu-Tz-SarAr.

Interventions

DIAGNOSTIC_TESTPET Scan

Participants will be imaged up to 4 time points post-injection to allow for biodistribution and dosimetry determination

DRUGhu5B1-TCO

On study day 0, a single slow infusion of hu5B1-TCO will be administered intravenously. Subsequently, either 3 days (n = 3) or 5 days (n = 3) later, a single slow infusion of 64Cu-Tz-SarAr will be administered intravenously.

DRUG64Cu-Tz-SarAr

On study day 0, a single slow infusion of hu5B1-TCO will be administered intravenously. Subsequently, either 3 days (n = 3) or 5 days (n = 3) later, a single slow infusion of 64Cu-Tz-SarAr will be administered intravenously.

DIAGNOSTIC_TESTPharmacokinetics

All participants receiving 64Cu-Tz-SarAr will have serial blood samples drawn.

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Patients will be eligible for enrollment if they fulfill the following criteria: 1. Signed informed consent 2. 18 years of age or older 3. Histologically confirmed primary or metastatic pancreatic ductal adenocarcinoma/bladder carcinoma / gastrointestinal tumor reviewed at MSK - includes patients with biopsy-proven or high suspicion on imaging for pancreatic ductal adenocarcinoma (PDAC) or histologically confirmed, locally-advanced, or metastatic pancreatic ductal adenocarcinoma (PDAC) of Patient with solid tumors increased serum CA19-9 serum level greater than ULN or CA19-9 positive biopsy 4\. At least one lesion by CT or MRI ≥ 2 cm unless determined otherwise for presurgery subjects 5. ECOG performance status of 0 to 2 6. Adequate laboratory parameters including: i. Absolute neutrophil count (ANC) ≥1.5 x 109/L ii. Hemoglobin ≥ 9.0 g/dL iii. Platelet count \>75,000/ mm3 iv. AST/SGOT, ALT/SGPT ≤2.5 x ULN, unless liver metastases are clearly present, then ≤5.0 x ULN v. Total bilirubin ≤ 1.5x the upper limit of normal unless considered due to Gilbert's syndrome in which case, ≤3x the upper limit of normal vi. Creatinine clearance (CLcr) (\> 60 mL/min) estimated by the Cockcroft-Gault (C-G) equation or estimated glomerular filtration rate (eGFR) 10. Willingness to participate in collection of pharmacokinetic samples

Exclusion criteria

Patients will be excluded from the study if they fulfill any of the following criteria: 1. Active, uncontrolled bacterial, viral, or fungal infection(s) requiring systemic therapy 2. Major surgery other than diagnostic surgery within 4 weeks of Study Day 1 3. History of anaphylactic reaction to human, or humanized, antibody 4. Other on-going cancer therapy with investigational agents 5. Known history of HIV 6. Pregnant or currently breast-feeding a. Subjects and their partners with reproductive potential must agree to use an effective form of contraception during the study and for 1 week following the study treatment. 7. Psychiatric illness/social situations that would interfere with compliance with study requirements.

Design outcomes

Primary

MeasureTime frameDescription
SUV mean measurement28 monthsThe serial quantitative data obtained over the various organs of interest (heart, liver, spleen, kidney, lung and any other organ that exhibits uptake) will be collected

Contacts

PRINCIPAL_INVESTIGATORSomali Gavane, MD

Memorial Sloan Kettering Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026