A Study of Positron Emission Tomography (PET) With [89]Zr-Df-IAb2M in Patients With High-risk Prostate Cancer

Prostate Cancer Clinical Trial

Official title:

A Phase 2 Study of Positron Emission Tomography (PET) With [89]Zr-Df-IAb2M in Patients With High-risk Prostate Cancer

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT02424513
• Other study ID #: 2014-2M-04.00
• Status: Withdrawn
• Phase: Phase 2
• First received: April 14, 2015
• Last updated: May 29, 2015
• Start date: March 2015
• Est. completion date: March 2016

Study information

• Verified date: May 2015
• Source: ImaginAb, Inc.
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug AdministrationUnited States: Institutional Review Board
• Study type: Interventional

Clinical Trial Summary

This is a prospective, multicenter, open-label, non-randomized study evaluating the ability of [89]Zr-Df-IAb2M to detect local, regional and metastatic prostate cancer confirmed by pathology.

Description:

IAB2M is an approximately 80 kDA molecular weight antibody fragment (a "Minibody") chelated with Desferroxamine and radiolabeled with [89]Zr. [89Zr]-Df-IAB2M targets the extracellular domain of Prostate Membrane Specific Antigen (PSMA) expressed on most primary and metastatic prostate cancer lesions.

This is a phase 2, prospective, multi-center, open-label, non-randomized study evaluating the ability of [89]Zr-Df-IAb2M to detect local, regional and metastatic prostate cancer confirmed by pathology in patients with biopsy-proven prostate cancer thought to be candidates for radical prostatectomy and pelvic lymph node dissection who are at high-risk for pelvic lymph node metastasis. These patients may have identified lymphadenopathy on conventional imaging but are considered eligible if still judged to be candidates for radical prostatectomy and lymph node dissection.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: March 2016
• Est. primary completion date: March 2016
• Accepts healthy volunteers: No
• Gender: Male
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Histological diagnosis of prostate adenocarcinoma.

2. Patients considered candidates for radical prostatectomy and pelvic lymph node dissection. These patients may or may not have identified nodal metastasis on conventional imaging but would still be candidates for radical prostatectomy and pelvic lymph node dissection.

3. Patients, who are at high-risk for pelvic lymph node metastasis as defined by a lymph node involvement risk of greater than or equal to 20% using the Briganti nomogram.

4. Age = 18 years.

5. Ability to understand and willingness to sign IRB approved consent form

6. For men of child-producing potential, the use of effective contraceptive methods during the study.

Exclusion Criteria:

1. Treatment or plans for treatment with radiation therapy, surgery, chemotherapy, or investigational therapy between the time of conventional imaging, [89]Zr-Df-IAB2M PET/CT and the surgical resection or biopsy procedures used for the study evaluation.

2. Unwillingness or inability to comply with procedures required in this protocol.

3. Other cancers that might potentially interfere with the reading and interpretation of [89]Zr-Df-IAB2M PET/CT scans.

4. Patients who are currently receiving any other investigational agent.

5. Patients who have had or are currently receiving androgen deprivation therapy

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Related Conditions & MeSH terms

• Prostate Cancer
• Prostatic Neoplasms

Intervention

Radiation:
• [89Zr]Df-IAB2M
A single intravenous infusion of 2.5 mCi of [89Zr]Df-IAB2M in a mass dose of 10 mg.

Locations

Country	Name	City	State
United States	Washington University	St Louis	Missouri

Sponsors (1)

Lead Sponsor	Collaborator
ImaginAb, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Number of Participants with Adverse Events or Serious Adverse Events attributable to [89]Zr-Df-IAB2M administration according to MedDRA/CTCAE v. 4.03 as a measure of safety and tolerability.		12 weeks	Yes
Other	Number of Participants with clinically significant changes in physical examination findings, vital signs, and blood chemistry from screening to follow-up analysis as a measure of safety and tolerability.		12weeks	Yes
Other	Number of Participants with Anti-drug antibody (ADA) in serum due to [89]Zr-Df-IAB2M injection as a measure of safety and tolerability.		12 weeks	Yes
Primary	Sensitivity of [89]Zr-Df-IAb2M PET/CT for the detection of extraprostatic sites of prostate cancer as confirmed by biopsy and/or surgically resected tissue.		6 weeks	No
Primary	Specificity of [89]Zr-Df-IAb2M PET/CT for the detection of extraprostatic sites of prostate cancer as confirmed by biopsy and/or surgically resected tissue.		6 weeks	No
Primary	Positive Predicted Value of [89]Zr-Df-IAb2M PET/CT for the detection of extraprostatic sites of prostate cancer as confirmed by biopsy and/or surgically resected tissue.		6 weeks	No
Primary	Negative Predicted Value of [89]Zr-Df-IAb2M PET/CT for the detection of extraprostatic sites of prostate cancer as confirmed by biopsy and/or surgically resected tissue.		6 weeks	No
Primary	Accuracy of [89]Zr-Df-IAb2M PET/CT for the detection of extraprostatic sites of prostate cancer as confirmed by biopsy and/or surgically resected tissue.		6 weeks	No
Secondary	optimal SUVmax and SUVpeak thresholds on [89]Zr-Df-IAb2M PET/CT for discriminating positive and negative tumor pathology results.		6 weeks	No
Secondary	Optimal SUV ratio thresholds on [89]Zr-Df-IAb2M PET/CT for discriminating positive and negative tumor pathology results, where the ratio is calculated using an appropriate reference tissue.		6 weeks	No
Secondary	Sensitivity and specificity of [89]Zr-Df-IAb2M PET/CT compared to the sensitivity and specificity of conventional imaging for the detection of lesions as confirmed by pathology.		6 weeks	No
Secondary	Location and number of positive lesions on [89]Zr-Df-IAb2M PET/CT in subjects with equivocal or negative conventional imaging scans.		6 weeks	No
Secondary	Sensitivity and specificity of [89]Zr-Df-IAb2M PET/CT to identify patients who are positive or negative for metastatic disease as identified by pathology.		6 weeks	No
Secondary	Sensitivity and specificity of IAB2M [89]Zr-Df-IAb2M PET/CT to identify disease as confirmed by pathology individually in each of the resected areas including: left and right external iliac, obturator and internal iliac nodes.		6 weeks	No