Recruiting
Phase 1
Phase 2

89Zr-DFO-SC16.56

Sponsor:

Memorial Sloan Kettering Cancer Center

Code:

NCT04199741

Conditions

Small Cell Lung Cancer

Small Cell Lung Carcinoma

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

89Zr-DFO-SC16.56

SC16.56, Phase I, Cohort 2

SC16.56, Phase I, Cohort 3

SC16.56, Phase II

Study Details

Brief summary:

The purpose of this study is to look at how safe 89Zr-DFO-SC16.56 is, and how it is processed by the body in people with small cell lung cancer.

Conditions

Small Cell Lung Cancer

Small Cell Lung Carcinoma

Study ID

NCT04199741

Start date

Dec 11, 2019

Status verified date

Aug, 2026

Completion date

Jun 11, 2027

Anticipated

Primary completion date

Jun 11, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

Subject Inclusion Criteria for Adult population

  • Signed, informed consent
  • Age 18 or more years
  • Histologically confirmed, SCLC, (newly diagnosed or recurrent); small cell carcinoma of unknown or non-lung origin; or other types of neuroendocrine tumor OR Histologically confirmed prostate cancer, with suspected or confirmed NEPC based upon clinical assays obtained prior to the trial OR Histologically confirmed or suspected primary brain neoplasm OR Desmoplastic small round cell tumors, osteosarcoma, Ewing's sarcoma, rabdomyosarcoma, Wilms tumors, hepatoblastomas, rhabdoid tumors and neuroblastoma patients
  • At least one tumor lesion on CT2 or MRI ≥ 0.8 cm OR
  • Tumor detectable FDG PET, PSMA PET, DOTATATE PET, MIBG SPECT (or planar MIBG scan if SPECT unavailable) OR
  • MRI or bone scan that shows new osseous metastases. The scans should have been obtained in the last 12 weeks
  • ECOG performance status 0 to 2
  • Negative serum pregnancy test within 2 weeks of 89Zr-DFO-SC16.56 for women of child-bearing potential
  • Available archival tumor specimen suitable for DLL3 IHC or clinician already has plans to obtain tumor specimen as part of standard of care (unrelated to patient participation in 19-292) which will yield sufficient tumor specimen to allow for DLL3 IHC
  • For the prostate cancer patient cohort, as an alternative if archival tissue is not available, patients must be willing to undergo PET/CT guided biopsy3 as described in section 9.3.

1. Patients with SCLC will be the primary study population, however patients with other types of neuroendocrine tumors may be included at the PI's discretion.
2. Criterion is intended to demonstrate presence of imageable disease. A low-dose CT (e.g. from a PET/CT scan) may be used at PI's discretion.
3. While willingness to undergo the biopsy is required if archival tissue is not available, PET/CT guided biopsy is not a mandatory study assessment. As described in section 9.3, the guided biopsy may be waived at the discretion of the principal investigator if the DLL3 PET/CT reveals no sites of DLL3 tracer-avid tumor or if the principal investigator deems itis not in the best interest of the patient, according to best clinical judgement. The pediatric population would not be approached for an optional PET/CT-guided biopsy

Subject Inclusion Criteria for Pediatric population

  • Signed, informed consent
  • Age 4 or more years
  • High risk neuroblastoma patients
  • At least one tumor lesion on CT2 or MRI ≥ 0.8 cm OR Tumor detectable FDG PET, PSMA PET, DOTATATE PET, MIBG SPECT (or planar MIBG scan if SPECT unavailable) OR MRI or bone scan that shows new osseous metastases. The scans should have been obtained in the last 12 weeks
  • ECOG performance status 0 to 2
  • Performance Status: Subjects must have a Lansky (<16 years) of at least 40
  • Negative serum pregnancy test within 2 weeks of 89Zr-DFO-SC16.56 for women of child-bearing potential

Exclusion Criteria:

Subject Exclusion Criteria for the Adult population

  • History of anaphylactic reaction to humanized or human antibodies
  • Pregnant or breast feeding
  • Psychiatric illness that would interfere with compliance with the study procedures
  • Inability to undergo PET scan due to weight limit
  • Patients who require anesthesia or monitored sedation to tolerate PET scan procedure

Subject Exclusion Criteria for the Pediatric population

  • History of anaphylactic reaction to humanized or human antibodies
  • Pregnant or breast feeding
  • Psychiatric illness that would interfere with compliance with the study procedures
  • Inability to undergo PET scan due to weight limit
  • Patients who require anesthesia or monitored sedation to tolerate PET scan procedure

Study Design

Enrollment

105 participants

Anticipated

Allocation

Non randomized

Intervention Model

Parallel Assignment

Primary purpose

Diagnostic

Interventions and Outcome Measures

Arms

experimental: Phase I

Up to 12 participants with tumors that are found to be >/= 50% positive for DLL3 by IHC

experimental: Phase II

Up to 18 participants with tumors that are found to be >/= 50% positive for DLL3 by IHC

Interventions

89Zr-DFO-SC16.56

Injection of 2 mCi of 89Zr-DFO-SC16.56 for Phase I participants. Dose for Phase II will be determined by results from Phase I.

SC16.56, Phase I, Cohort 2

7.5mg

SC16.56, Phase I, Cohort 3

22.5mg

SC16.56, Phase II

Dose for Phase II will be determined by results from Phase I.

Primary outcome measure

  • Phase I: Radiation Dosimetry of 89Zr- DFO-SC16.56 PET/CT imaging in participants [ Time Frame: Up to 12 months ]
  • Phase I: Safety of 89Zr- DFO-SC16.56 PET/CT imaging in cancer patients by evaluating toxicities [ Time Frame: up to 12 months ]
  • Phase II: Correlation between tumor uptake of 89Zr- DFO-SC16.56 with expression of DLL3 [ Time Frame: Up to 12 months ]

Central Contacts and Locations

Central contacts

Locations

Memorial Sloan Kettering Cancer Center

Recruiting

New York, New York, United States, 10065

Contacts

Mark Dunphy, DO

212-639-8131

More Information

Sponsor

Memorial Sloan Kettering Cancer Center

Last update posted

Aug 12, 2026

Last verified

Aug, 2026

Keywords

  • Small cell lung cancer
  • Small Cell Lung Carcinoma
  • 89Zr-DFO-SC16.56
  • 19-292
  • Memorial Sloan Kettering Cancer Center

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Memorial Sloan Kettering Cancer Center on 2026-08-12.