Ignite Creation Date:
2024-05-05 @ 11:53 AM
Last Modification Date:
2024-10-26 @ 9:15 AM
Study NCT ID:
NCT00160095
Status:
COMPLETED
Last Update Posted:
2015-05-07
First Post:
2005-09-09
Brief Title:
Patient Selection for Hypoxia Modifying Treatments in Larynx Carcinomas
Sponsor:
Radboud University Medical Center
Organization:
Radboud University Medical Center
Study Overview
Official Title:
Patient Selection for Hypoxia Modifying Treatments Based on Functional Microregional Imaging of Tumor Vasculature Oxygenation and Proliferation in Squamous Cell Carcinoma of the Larynx
Status:
COMPLETED
Status Verified Date:
2015-05
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The purpose of this study is to identify in a prospective manner microregional profiles of oxygenation and proliferation based on exogenous and endogenous markers that are predictive for outcome of radiotherapy in squamous cell carcinoma of the larynx and to investigate if these profiles can identify patients that are most likely to benefit from hypoxia modifying treatment strategies like ARCON Accelerated radiotherapy combined with carbogen breathing and nicotinamide
Detailed Description:
Purpose
Prognostic indicators discriminate patients with good and bad prognosis Predictive assays are tools that select patients for specific treatments or treatment modifications such that outcome will be improved relative to conventional treatment In oncology many prognostic indicators based on clinical or biological tumor characteristics have been described but only very few have proven to be useful as predictive assays We have developed an imaging modality for coregistration of tumor oxygenation and proliferation at the microregional level with preservation of the tumor anatomy and the microenvironmental structure We have strong indications that this functional imaging can be a powerful tool for identifying those patients that will profit from hypoxia modifying treatments
Tumor oxygenation and proliferation are recognized as important determinants of the outcome of radiotherapy and possibly also of other treatment modalities in a number of tumor types and in particular in squamous cell carcinomas Various exogenous and endogenous markers for hypoxia and proliferation are currently available which can be studied in relation to each other the tumor architecture and the tumor microenvironment using immunohistochemistry and advanced image analysis techniques
The purpose of this project is to identify microregional profiles of oxygenation and proliferation based on exogenous and endogenous markers that
1 Are predictive for outcome of radiotherapy in squamous cell carcinoma of the larynx
2 Can identify the patients that are most likely to benefit from hypoxia modifying treatment strategies
And to
3 Validate these marker profiles in a prospective manner and in a sufficiently large group of patients
Plan of investigation
In 2001 a multicenter randomized trial was initiated comparing accelerated radiotherapy with carbogen and nicotinamide as hypoxic modifiers against accelerated radiotherapy alone in patients with carcinoma of the larynx This trial is approved and supported by the Dutch Cancer Society and currently 6 Dutch and 1 British center are participating This trial provides a unique opportunity to prospectively test oxygenation and proliferation related marker profiles in a large homogeneous patient population and to assess the predictive capacity in a comparative setting with one group of patients receiving a hypoxia modifying treatment and the other group not
Paraffin-embedded biopsy specimens will be collected from all patients entered in this trial In part of the patients biopsies will be taken after injection of the hypoxic marker pimonidazole and the S-phase marker iododeoxyuridine IdUrd Sections will be immunohistochemically processed and stained for various combinations of vascular markers endogenous hypoxia and proliferation markers and if applicable for pimonidazole and IdUrd The sections will be analyzed by computerized image processing Apart from overall single parameter values that will be obtained the interrelationship of the various parameters will be studied and the microregional phenotype of the tumors will be characterized by quantification and integration of the marker profiles The information thus obtained will be related to treatment outcome in terms of both local control and survival and results from the two treatment groups will be compared
Possible results
This investigation can identify oxygenation and proliferation related parameters and profiles that are predictive for outcome of radiotherapy in squamous cell carcinoma of the larynx and provide a selection tool for hypoxia modifying treatments The principle of characterization of the tumor phenotype at the microregional level using functional imaging may also be applied to other tumor types and treatment strategies
Prognostic indicators discriminate patients with good and bad prognosis Predictive assays are tools that select patients for specific treatments or treatment modifications such that outcome will be improved relative to conventional treatment In oncology many prognostic indicators based on clinical or biological tumor characteristics have been described but only very few have proven to be useful as predictive assays We have developed an imaging modality for coregistration of tumor oxygenation and proliferation at the microregional level with preservation of the tumor anatomy and the microenvironmental structure We have strong indications that this functional imaging can be a powerful tool for identifying those patients that will profit from hypoxia modifying treatments
Tumor oxygenation and proliferation are recognized as important determinants of the outcome of radiotherapy and possibly also of other treatment modalities in a number of tumor types and in particular in squamous cell carcinomas Various exogenous and endogenous markers for hypoxia and proliferation are currently available which can be studied in relation to each other the tumor architecture and the tumor microenvironment using immunohistochemistry and advanced image analysis techniques
The purpose of this project is to identify microregional profiles of oxygenation and proliferation based on exogenous and endogenous markers that
1 Are predictive for outcome of radiotherapy in squamous cell carcinoma of the larynx
2 Can identify the patients that are most likely to benefit from hypoxia modifying treatment strategies
And to
3 Validate these marker profiles in a prospective manner and in a sufficiently large group of patients
Plan of investigation
In 2001 a multicenter randomized trial was initiated comparing accelerated radiotherapy with carbogen and nicotinamide as hypoxic modifiers against accelerated radiotherapy alone in patients with carcinoma of the larynx This trial is approved and supported by the Dutch Cancer Society and currently 6 Dutch and 1 British center are participating This trial provides a unique opportunity to prospectively test oxygenation and proliferation related marker profiles in a large homogeneous patient population and to assess the predictive capacity in a comparative setting with one group of patients receiving a hypoxia modifying treatment and the other group not
Paraffin-embedded biopsy specimens will be collected from all patients entered in this trial In part of the patients biopsies will be taken after injection of the hypoxic marker pimonidazole and the S-phase marker iododeoxyuridine IdUrd Sections will be immunohistochemically processed and stained for various combinations of vascular markers endogenous hypoxia and proliferation markers and if applicable for pimonidazole and IdUrd The sections will be analyzed by computerized image processing Apart from overall single parameter values that will be obtained the interrelationship of the various parameters will be studied and the microregional phenotype of the tumors will be characterized by quantification and integration of the marker profiles The information thus obtained will be related to treatment outcome in terms of both local control and survival and results from the two treatment groups will be compared
Possible results
This investigation can identify oxygenation and proliferation related parameters and profiles that are predictive for outcome of radiotherapy in squamous cell carcinoma of the larynx and provide a selection tool for hypoxia modifying treatments The principle of characterization of the tumor phenotype at the microregional level using functional imaging may also be applied to other tumor types and treatment strategies
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| KUN 2003-2899 | None | None | None |