Clinical Trial Details
— Status: Withdrawn
Administrative data
NCT number |
NCT01622764 |
Other study ID # |
BP28015 |
Secondary ID |
2011-004974-27 |
Status |
Withdrawn |
Phase |
Phase 2
|
First received |
|
Last updated |
|
Start date |
September 2014 |
Est. completion date |
September 2016 |
Study information
Verified date |
May 2024 |
Source |
University Medical Center Groningen |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
The research the investigators propose is a molecular imaging study of RO5323441, an antibody
against placental growth factor (PlGF) in patients with recurrent GBM treated with
bevacizumab, a drug against vascular endothelial growth factor (VEGF). Both VEGF and PlGF are
molecules involved in tumor growth since they enable the development of tumor vasculature,
thus delivery of oxygen and nutrients to the tumor. The treatment will consist of bevacizumab
(i.v.) given every 2 weeks, until the patient has clinical benefit (no disease progression)
or unacceptable toxicity. Meanwhile, patients will receive and injection of low protein-dose
radiolabeled RO5323441 (89Zr-RO5323441) on day -3 and 11 of the first bevacizumab treatment
cycle. Brain-only 89Zr-RO5323441 positron emission tomography (PET) will be performed at 2
hours after each injection of 89Zr-RO5323441 on day -3 and 11. Whole body 89Zr-RO5323441 PET
will be performed on day 1 and 15, before and after the first treatment with bevacizumab. The
main purpose of this trial is to determine how much of RO5323441 actually gets into the
recurrent GBM lesions, since for a drug to be active, it has to be able to reach cancer
cells. As second aims, RO5323441 accumulation in normal, non-tumor organs, will be assessed,
as well as how bevacizumab influences RO5323441 penetration into tumor lesions (to answer the
question of combined bevacizumab + RO5323441 treatment in GBM) or RO5323441 biodistribution
in non-tumor organs.
Description:
Rationale: Glioblastomas (GBM) account for 70% of all gliomas (80% of all malignant brain and
CNS tumors) and remain the most aggressive sub-type of glioma, with a particularly poor
prognosis. Surgery aimed to complete resection is the first therapeutic modality, however,
the infiltrative nature of the disease makes a complete resection nearly impossible. In a
randomized, phase III EORTC-NCIC trial, overall survival in newly diagnosed glioblastoma
patients treated with concomitant temozolomide and radiotherapy followed by 6 cycles of
temozolomide was 27.2% (95% CI 22.2-32.5) at 2 years, 16.0% (12.0-20.6) at 3 years, 12.1%
(8.5-16.4) at 4 years, and 9.8% (6.4-14.0) at 5 years, treatment which is now standard of
care. Almost all GBM patients experience relapse and there is no one generally agreed
standard of care in recurrent GBM. Vascular endothelial growth factor-A (VEGF-A), a central
regulator of physiological and pathological angiogenesis, is considered to play a major
angiogenic role in GBM. Bevacizumab, a humanized monoclonal antibody against VEGF-A, showed a
28%RR,a 43% 6-month PFS and provided a consistent clinical benefit in terms of both delayed
progression and increased median overall survival over historical controls. This benefit is
limited however, with the tumor eventually evading treatment by for example compensatory
upregulation of angiogenic factors like placental growth factor (PlGF). Therefore, targeting
PlGF could be a new strategy of tumor angiogenesis inhibition, complementary to VEGF(R)
inhibition. In preclinical setting, inhibiting PlGF has shown to inhibit growth and
metastasis of various tumors. Humanized monoclonal PlGF antibody RO5323441 was evaluated in
phase I trials in healthy volunteers and in cancer patients; no Dose Limiting Toxicity (DLT)
was found, thus no Maximum Tolerated Dose (MTD) defined. Stable disease was observed in 6/23
patients on different dose levels. A phase I/II study of bevacizumab in combination with
RO5323441 is currently ongoing in patients with recurrent GBM (NCT01308684). However, the
amount of RO5323441 to reach the recurrent GBM, and how this is affected by bevacizumab
treatment, are yet unknown. This can be determined by repetitive measurement of RO5323441
tumor uptake with 89Zr-RO5323441 PET.
Objectives: The objectives of this study are to assess the penetration of RO532441 into
recurrent GBM by 89Zr-RO5323441 PET imaging and to quantify its uptake, to visualize and
quantify 89Zr-RO5323441 non-tumor organ distribution, and to measure the effect of
bevacizumab treatment on 89Zr-RO5323441 uptake in recurrent GBM.
Study design: This is a single center, investigator driven, 89Zr-RO5323441 PET imaging and
bio-distribution study in patients with recurrent GBM treated with bevacizumab. Bevacizumab
at a dose of 10 mg/kg body weight i.v. in 90 min on day 1 is given every 2 weeks in cycles of
6 weeks. The treatment with bevacizumab will continue until documented disease progression,
unacceptable toxicity, patient refusal or patient's best interest. 89Zr-RO5323441 will be
administered i.v. at a tracer dose of 5 mg (37 MBq) on day -3 and on day 11 of cycle 1 of
bevacizumab treatment. Four PET scans will be performed (2 brain only PET scans and 2 whole
body PET scans). Brain only PET scans will be performed 2 hours after each 89Zr-RO5323441
administration on day -3 and day 11, and will take 10 minutes/ scan. Whole body PET scans
will be performed 4 days after each 89Zr-RO5323441 administration (before dosing with
bevacizumab on day 1 and day 15), and will take 50 minutes/ scan. 89Zr-RO5323441 uptake
values in recurrent GBM lesions at baseline and day 15 will be compared to assess bevacizumab
effect on tracer tumor uptake. The purpose of the two early brain-only PET scans after each
89Zr-RO5323441 injection is to identify whether changes in 89Zr-RO5323441 uptake in recurrent
GBM lesions following treatment with bevacizumab can be solely attributed to an effect on
blood volume/ vascular permeability, or rather indicate a possible modulation of placental
growth factor (PlGF) level in the tumor tissue. The rationale for the whole body
89Zr-RO5323441 PET scans is to assess 89Zr-RO5323441 non-tumor organs distribution at
baseline, as well as to evaluate the influence bevacizumab treatment could exert on
89Zr-RO5323441 non-tumor organs uptake. For 89Zr-RO5323441 pharmacokinetics, blood samples
will be taken 1 hour after 89Zr-RO5323441 tracer injection on d-3 and d11, respectively
together with the blood samples for hematology on d1 and d15 during the 1st cycle of
bevacizumab treatment. The rationale for this is that performing both the 89Zr-RO5323441 PET
scan data quantification and the assessment of the tracer's blood pharmacokinetics would
enable us to better understand the specificity of 89Zr-RO5323441 uptake in recurrent GBM
lesions. Patients will be assessed for bevacizumab treatment response by brain MRI every 6
weeks (i.e. every cycle) in the first 6 month and every 12 weeks thereafter, until documented
progression using the updated RANO criteria. Treatment and tracer injection related side
effects will be assessed according to the National Cancer Institute (NCI) Common Terminology
Criteria for Adverse Events (CTCAE; version 4.0) for toxicity and adverse event reporting.
Main study parameters/ endpoints: 89Zr-RO5323441 tumor uptake and organ distribution will be
scored visually and quantitatively. Standardized uptake value (SUV) and relative uptake value
(RUV) will be determined and compared in the recurrent GBM lesions and in relevant tissues at
baseline and day 15.
Nature and extent of the burden and risk associated with participation, benefit and group
relatedness: Bevacizumab is registered in The Netherlands for use in metastasized colon and
breast cancer, in lung cancer and in advanced renal cell carcinoma and has already been
tested in GBM clinical trials. Bevacizumab is expected to have clinical benefit for patients
enrolled in this study and similar safety profile compared to the other indications.
RO5323441 monotherapy was well tolerated in patients with advanced malignant diseases. In
this study, one patient will receive a low total protein dose of 10 mg RO5323441 (2X5mg) in
the tracer and it is expected that RO5323441 will not enhance bevacizumab related side
effects. The total radiation dose of 89Zr-RO5323441 for a patient participating in this study
would be 36 mSv for women and 30 mSv for men. According to the investigators this radiation
burden is justifiable in this patient group by the information that can be obtained in this
study. Risk: exposure to 89Zr-RO5323441 PET scan-related radiation, possibility of allergic
reaction to the protein in the tracer, possible side-effects of bevacizumab.