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Comparative Study of Sensitivity of Ga-DOTATOC PET vs Octreoscan SPECT + CT

Comparator Study of 68Ga-DOTATOC PET/CT With Octreoscan + High-resolution, Contrast-enhanced CT for Diagnosis and Staging in Neuroendocrine Tumors and Other Somatostatin Receptor Positive Tumors

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01869725
Enrollment
68
Registered
2013-06-05
Start date
2013-04-01
Completion date
2018-12-26
Last updated
2021-09-22

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

Conditions

Adult Medulloblastoma, Childhood Medulloblastoma, Neuroblastoma, Neuroendocrine Tumor, Somatostatinoma

Keywords

Neuroendocrine Tumor, Ga-DOTATOC PET, Imaging

Brief summary

This clinical trial studies gallium Ga 68-edotreotide positron emission tomography (PET)/computed tomography (CT) compared with indium In 111 pentetreotide plus contrast-enhanced CT (or MRI) in diagnosing patients with neuroendocrine tumors and other somatostatin receptor positive tumors. Diagnostic procedures, such as gallium Ga 68-edotreotide PET/CT, may help find and diagnose somatostatin receptor positive neuroendocrine tumors. It is not yet known whether Ga 68-edotreotide PET/CT is as effective as indium In 111 pentetreotide plus contrast-enhanced CT (or MRI) in diagnosis and staging of patients with neuroendocrine tumors.

Detailed description

PRIMARY OBJECTIVES: I. To compare efficacy of \[68Ga\]-DOTA-tyr3-Octreotide (68Ga-DOTATOC) (gallium Ga 68-edotreotide) PET/CT with Octreoscan (indium In 111 pentetreotide) + high-resolution, contrast-enhanced CT for diagnosis and staging in patients with somatostatin receptor expressing tumors. OUTLINE: Patients receive gallium Ga 68-edotreotide intravenously (IV) and undergo PET/CT scan. Within 120 days, patients undergo standard indium In 111 pentetreotide contrast-enhanced CT or MRI scan. Patients may also undergo a second gallium Ga 68-edotreotide PET/CT scan within 3-6 months if the lesions of the first scan cannot be confirmed.

Interventions

Undergo gallium Ga 68-edotreotide PET/CT scan

Undergo indium In 111 pentetreotide contrast-enhanced CT or MRI scan

PROCEDUREcomputed tomography

Undergo indium In 111 pentetreotide contrast-enhanced CT scan

Undergo indium In 111 pentetreotide contrast-enhanced CT or MRI scan

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Sue O'Dorisio
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

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

Inclusion criteria

* Signed informed consent * Biopsy proven neuroendocrine tumor, neuroblastoma, medulloblastoma, or other somatostatin receptor positive tumor * Off Sandostatin (octreotide acetate)-long acting release (LAR) \> 4 weeks and off immediate release (subcutaneous) for 12 hrs prior to 68Ga-DOTATOC PET-CT * Karnofsky performance status or Lansky Play Scale status of \>= 50 (or Eastern Cooperative Oncology Group \[ECOG\]/World Health Organization \[WHO\] equivalent) * Subject is male; or is a female who is either pre-menarchal, surgically sterile (has had a documented bilateral oophorectomy and/or documented hysterectomy), postmenopausal (\> 1 years without menses), non-lactating, or of childbearing potential for whom a serum pregnancy test (with the results known prior to investigational product administration) is negative; a negative serum pregnancy test will be required for all female subjects with child bearing potential; if a false pregnancy test is suspected, e.g., perimenopausal condition, an obstetrician will be consulted to determine if she is/is capable of becoming pregnant * No therapy other than Sandostatin since last Octreoscan + diagnostic CT * Fresh frozen (recommended) or paraffin fixed (required) specimen of primary or metastases available for ribonucleic acid (RNA) and immunohistochemistry (IHC)

Exclusion criteria

* Pregnancy or breast feeding * Surgical resection, chemotherapy, radiation therapy, or biologic therapy since last Octreoscan + CT; continuation of the same dose of Sandostatin-LAR or subcutaneous Sandostatin is allowed * Medical condition uncontrolled by treatment making completion of study unlikely * Weight more than 400 pounds (subjects who weigh more than 400 pounds will not be able to fit inside the imaging machines) * Inability to lie still for the entire imaging time (e.g. cough, severe arthritis, etc.) * Inability to complete the needed investigational and standard-of-care imaging examinations due to other reasons (severe claustrophobia, radiation phobia, etc.) * Any additional medical condition, serious intercurrent illness, or other extenuating circumstance that, in the opinion of the investigator, may significantly interfere with study compliance

Design outcomes

Primary

MeasureTime frameDescription
Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologyUp to 6 months between the timing of the Octreoscan SPECT/CT plus high-resolution, contrast-enhanced CT and the time of the 68Ga-DOTATOC PET/CT (either imaging type may occur first)Tumor lesions detected on 68Ga-DOTATOC PET/CT compared with tumor lesions detected on Octreoscan SPECT imaging plus high-resolution, contrast-enhanced CT.
Compare Sensitivity of 68Ga-DOTATOC PET/CT With OctreoscanUp to 6 monthsCompare sensitivity of 68Ga-DOTATOC PET/CT with Octreoscan + high-resolution, contrast-enhanced CT for diagnosis and staging in neuroendocrine tumors and other somatostatin receptor positive tumors
Compare Specificity of 68Ga-DOTATOC PET/CT With Octreoscan6 monthsCompare specificity of 68Ga-DOTATOC PET/CT with Octreoscan + high-resolution, contrast-enhanced CT for diagnosis and staging in neuroendocrine tumors and other somatostatin receptor positive tumors

Countries

United States

Participant flow

Participants by arm

ArmCount
Diagnostic (Gallium Ga 68-edotreotide PET/CT)
Patients receive gallium Ga 68-edotreotide IV and undergo PET/CT scan. Within 120 days, patients undergo standard indium In 111 pentetreotide contrast-enhanced CT or MRI scan. Patients may undergo a second gallium Ga 68-edotreotide PET/CT scan within 3-6 months if the lesions of the first scan cannot be confirmed. gallium Ga 68-edotreotide: Given IV positron emission tomography/computed tomography: Undergo gallium Ga 68-edotreotide PET/CT scan indium In 111 pentetreotide: Undergo indium In 111 pentetreotide contrast-enhanced CT or MRI scan computed tomography: Undergo indium In 111 pentetreotide contrast-enhanced CT scan contrast-enhanced magnetic resonance imaging: Undergo indium In 111 pentetreotide contrast-enhanced CT or MRI scan
68
Total68

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyDeath1
Overall Studyineligible after registration1
Overall StudyLost to Follow-up2

Baseline characteristics

CharacteristicDiagnostic (Gallium Ga 68-edotreotide PET/CT)
Age, Categorical
<=18 years
5 Participants
Age, Categorical
>=65 years
18 Participants
Age, Categorical
Between 18 and 65 years
45 Participants
Age, Continuous55 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
38 Participants
Race (NIH/OMB)
White
28 Participants
Region of Enrollment
United States
68 eligible participants
Sex: Female, Male
Female
33 Participants
Sex: Female, Male
Male
35 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 68
other
Total, other adverse events
11 / 68
serious
Total, serious adverse events
0 / 68

Outcome results

Primary

Compare Sensitivity of 68Ga-DOTATOC PET/CT With Octreoscan

Compare sensitivity of 68Ga-DOTATOC PET/CT with Octreoscan + high-resolution, contrast-enhanced CT for diagnosis and staging in neuroendocrine tumors and other somatostatin receptor positive tumors

Time frame: Up to 6 months

Population: Patients with neuroendocrine tumor or other somatostatin receptor positive tumor

ArmMeasureGroupValue (NUMBER)
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Sensitivity of 68Ga-DOTATOC PET/CT With OctreoscanSensitivity of Ga-68-DOTATOC96.55 percentage of sensitivity
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Sensitivity of 68Ga-DOTATOC PET/CT With OctreoscanSensitivity of OctreoScan79.31 percentage of sensitivity
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Sensitivity of 68Ga-DOTATOC PET/CT With OctreoscanSensitivity of Conventional Imaging (CI)82.24 percentage of sensitivity
Primary

Compare Specificity of 68Ga-DOTATOC PET/CT With Octreoscan

Compare specificity of 68Ga-DOTATOC PET/CT with Octreoscan + high-resolution, contrast-enhanced CT for diagnosis and staging in neuroendocrine tumors and other somatostatin receptor positive tumors

Time frame: 6 months

Population: Patients with neuroendocrine tumor or other somatostatin receptor positive tumor

ArmMeasureGroupValue (NUMBER)
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Specificity of 68Ga-DOTATOC PET/CT With OctreoscanSpecificity of 68Ga-DOTATOC100 percentage of specificity
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Specificity of 68Ga-DOTATOC PET/CT With OctreoscanSpecificity of Octreoscan100 percentage of specificity
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Compare Specificity of 68Ga-DOTATOC PET/CT With OctreoscanSpecificity of Conventional Imaging (CI)47.82 percentage of specificity
Primary

Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With Pathology

Tumor lesions detected on 68Ga-DOTATOC PET/CT compared with tumor lesions detected on Octreoscan SPECT imaging plus high-resolution, contrast-enhanced CT.

Time frame: Up to 6 months between the timing of the Octreoscan SPECT/CT plus high-resolution, contrast-enhanced CT and the time of the 68Ga-DOTATOC PET/CT (either imaging type may occur first)

Population: Patients with neuroendocrine tumor or other somatostatin receptor positive tumor

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for Ga-68-DOTATOC as Compared to PathologyTotal positive28 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for Ga-68-DOTATOC as Compared to PathologyFalse position0 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for Ga-68-DOTATOC as Compared to PathologyFalse negative1 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for Ga-68-DOTATOC as Compared to PathologyTotal negative5 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for OctreoScan as Compared to PathologyTotal positive23 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for OctreoScan as Compared to PathologyFalse position0 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for OctreoScan as Compared to PathologyFalse negative6 Participants
Diagnostic (Gallium Ga 68-edotreotide PET/CT)Comparison of Conventional Imaging and Gallium Ga 68-edotreotide PET Using Concordance in Tumor Detection With PathologySensitivity and Specificity for OctreoScan as Compared to PathologyTotal negative5 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026