Ignite Creation Date:
2024-05-05 @ 11:45 AM
Last Modification Date:
2024-10-26 @ 9:12 AM
Study NCT ID:
NCT00123799
Status:
TERMINATED
Last Update Posted:
2024-06-21
First Post:
2005-07-22
Brief Title:
Study of Fluorodeoxyglucose FluGlucoScan in Patients With Breast Cancer Correlation With Histologic Findings of Sentinel Node Biopsies and Axillary Dissection
Sponsor:
AHS Cancer Control Alberta
Organization:
AHS Cancer Control Alberta
Study Overview
Official Title:
A Phase II Study of Fluorodeoxyglucose FluGlucoScan in Patients With Breast Cancer Correlation With Histologic Findings of Sentinel Node Biopsies and Axillary Dissection
Status:
TERMINATED
Status Verified Date:
2024-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
sufficient enrollment reached
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Breast cancer affects many women One of the places to which it can spread is the lymph glands under the arm The type of treatment offered to patients often will depend on whether those lymph glands have cancer in them or not For this reason a standard recommendation is that women with breast cancer have these lymph glands removed with surgery This cancer causes side effects including numbness pain decreased ability to move the arm and arm swelling A new type of surgery which looks only at the first gland that a cancer drains to sentinel node biopsy may help to avoid having to remove the glands under the arm Also a new way of imaging the glands under the arm called Positron Emission Tomography PET scanning may also give a better idea of the chance that these glands have cancer in them This study is determining whether PET scans before surgery and sentinel node biopsy can decrease the need for a complete axillary dissection
Detailed Description:
10 Introduction
Breast cancer is the most common cancer in North American women It is estimated that one in 8 American women will develop breast cancer during her lifetime Surgical treatment has evolved from radical mastectomy to breast conservation and systemic treatment has become increasingly important The presence or absence of lymph node metastases is the most important prognostic factor used to determine type of systemic treatment necessary Axillary dissection however carries with it the risk of nerve injury lymphedema decreased arm motion and seroma formation Clinical examination ultrasound CT scanning and MRI of the axilla are not sensitive or specific enough to eliminate the need for axillary dissection Sentinel node biopsy SNB can predict the pathologic status of the axilla and theoretically could differentiate patients into those with positive node biopsies who require full dissection versus those who are negative and do not Frozen section of the sentinel node is inaccurate and therefore SNB positive patients would require two surgical procedures Positron Emission Tomography PET scanning of the axilla has been reported to have a high sensitivity and specificity and if used prior to surgery may guide the surgeon in determining the need for full axillary dissection versus SNB alone PET scanning has also been reported to identify unsuspected distant metastases not found on standard staging examinations This study will investigate the use of PET scanning in conjunction with SNB and results of both modalities will be correlated with histologic results of axillary dissection
20 Objectives
There are no reports describing results of a similar study By performing a properly constructed clinical trial in T1 - 3 N0 breast cancer patients the question of whether PET scanning will make a difference to patient management can be answered The hypothesis of this study is therefore that a PET scan prior to surgery will facilitate staging both locally axilla and distant and will help the surgeon determine whether to do SNB or axillary dissection
21 Primary Objective To determine whether preoperative PET imaging combined with sentinel node biopsy can accurately identify nodal status This would be most important in patients with a negative PET scan and negative sentinel nodes If the combination of these tests was found to have a high negative predictive value for nodal metastases full axillary dissection could be avoided
22 Secondary Objectives
Assess pattern of lymph node drainage using lymphoscintigraphy
Assessment of size limitations of PET scanning in metastatic lymph nodes
Assessment of primary tumor size and evidence of multifocality as compared to preoperative imaging mammography - ultrasound
The incidence of unsuspected distant metastases and frequency with which treatment was changed as a result of the PET scan would also be determined
30 Materials and Methods
31 Patient Population Pre and post menopausal women with clinical T1-3 N0 breast cancer are eligible All will have biopsy proven breast carcinoma Positive core or fine needle aspiration biopsies will be obtained in all patients Core biopsies are preferred Excisional biopsies are not allowed Patients must not be pregnant or lactating and must not have had prior malignancy Diabetic patients are ineligible An informal survey of 8 patients from Calgary indicates that all 8 would be willing to travel to Edmonton for their PET scan Personal communication from Dr Mews
32 Preoperative Imaging All patients will have preoperative mammography - ultrasound of the breast Patients eligible for and consenting to the study will be referred to the Cross Cancer Institute by their surgeons and will have preoperative PET scanning Imaging will be completed within seven days prior to surgery Once a PET scanner becomes available in Calgary the scans will be done there Potential sites of distant metastases identified by PET scan will be imaged further and if necessary possible biopsies will be obtained to confirm the diagnosis
33 Surgery Dr Kelly Dabbs from Edmonton and Dr Daphne Mew from Calgary will be the surgeons involved They have proven experience in doing SNBs At the time of surgery sentinel node biopsy using both blue dye and colloid will be performed followed by level III axillary dissection The patients may have either segmental resection or mastectomy
34 Pathology The sentinel node will be assessed by HE as well as immunohistochemistry as per standard protocol Measurements of primary tumor size size of axillary metastases and size of in situ component will be documented All pathology will be reported by Dr J Danyluk Dr R Berendt and Dr F Alexander
35 Outcome Analysis Patients with positive axillary nodes on dissection and positive SNB andor PET will be considered true positive TP for that modality A negative axillary dissection and negative PET andor SNB will identify the true negative TN group A positive axillary dissection and negative PET andor SNB will identify the false negative FN subgroup A negative axillary dissection and positive PET andor SNB will identify the false positive FP subgroup Sensitivity TPTP FN and specificity TNTN FP will be determined If patients do not have successful sentinel node surgery or PET scanning they will be included in the analysis of the individual modality which was successful
36 Statistics In order to have an adequate number of node positive patients to test sensitivity an overall total of 240 patients is required The proportion of patients who are node positive is estimated to be 035 A sample of 240 is expected to contain 84 node positive patients and the probability that at least 72 of the 240 patients are node positive is 095 The subsample of 72 node positive patients is sufficient to perform a one-sided test of equivalence for a target sensitivity of 080 and an allowable difference of 010 with significance level of 10 and power of 80The 168 node negative patients from the 240 total permit a one-sided test of equivalence for which the target specificity is 095 and the allowable difference is 005 with significance level of 5 and power of 9043
Breast cancer is the most common cancer in North American women It is estimated that one in 8 American women will develop breast cancer during her lifetime Surgical treatment has evolved from radical mastectomy to breast conservation and systemic treatment has become increasingly important The presence or absence of lymph node metastases is the most important prognostic factor used to determine type of systemic treatment necessary Axillary dissection however carries with it the risk of nerve injury lymphedema decreased arm motion and seroma formation Clinical examination ultrasound CT scanning and MRI of the axilla are not sensitive or specific enough to eliminate the need for axillary dissection Sentinel node biopsy SNB can predict the pathologic status of the axilla and theoretically could differentiate patients into those with positive node biopsies who require full dissection versus those who are negative and do not Frozen section of the sentinel node is inaccurate and therefore SNB positive patients would require two surgical procedures Positron Emission Tomography PET scanning of the axilla has been reported to have a high sensitivity and specificity and if used prior to surgery may guide the surgeon in determining the need for full axillary dissection versus SNB alone PET scanning has also been reported to identify unsuspected distant metastases not found on standard staging examinations This study will investigate the use of PET scanning in conjunction with SNB and results of both modalities will be correlated with histologic results of axillary dissection
20 Objectives
There are no reports describing results of a similar study By performing a properly constructed clinical trial in T1 - 3 N0 breast cancer patients the question of whether PET scanning will make a difference to patient management can be answered The hypothesis of this study is therefore that a PET scan prior to surgery will facilitate staging both locally axilla and distant and will help the surgeon determine whether to do SNB or axillary dissection
21 Primary Objective To determine whether preoperative PET imaging combined with sentinel node biopsy can accurately identify nodal status This would be most important in patients with a negative PET scan and negative sentinel nodes If the combination of these tests was found to have a high negative predictive value for nodal metastases full axillary dissection could be avoided
22 Secondary Objectives
Assess pattern of lymph node drainage using lymphoscintigraphy
Assessment of size limitations of PET scanning in metastatic lymph nodes
Assessment of primary tumor size and evidence of multifocality as compared to preoperative imaging mammography - ultrasound
The incidence of unsuspected distant metastases and frequency with which treatment was changed as a result of the PET scan would also be determined
30 Materials and Methods
31 Patient Population Pre and post menopausal women with clinical T1-3 N0 breast cancer are eligible All will have biopsy proven breast carcinoma Positive core or fine needle aspiration biopsies will be obtained in all patients Core biopsies are preferred Excisional biopsies are not allowed Patients must not be pregnant or lactating and must not have had prior malignancy Diabetic patients are ineligible An informal survey of 8 patients from Calgary indicates that all 8 would be willing to travel to Edmonton for their PET scan Personal communication from Dr Mews
32 Preoperative Imaging All patients will have preoperative mammography - ultrasound of the breast Patients eligible for and consenting to the study will be referred to the Cross Cancer Institute by their surgeons and will have preoperative PET scanning Imaging will be completed within seven days prior to surgery Once a PET scanner becomes available in Calgary the scans will be done there Potential sites of distant metastases identified by PET scan will be imaged further and if necessary possible biopsies will be obtained to confirm the diagnosis
33 Surgery Dr Kelly Dabbs from Edmonton and Dr Daphne Mew from Calgary will be the surgeons involved They have proven experience in doing SNBs At the time of surgery sentinel node biopsy using both blue dye and colloid will be performed followed by level III axillary dissection The patients may have either segmental resection or mastectomy
34 Pathology The sentinel node will be assessed by HE as well as immunohistochemistry as per standard protocol Measurements of primary tumor size size of axillary metastases and size of in situ component will be documented All pathology will be reported by Dr J Danyluk Dr R Berendt and Dr F Alexander
35 Outcome Analysis Patients with positive axillary nodes on dissection and positive SNB andor PET will be considered true positive TP for that modality A negative axillary dissection and negative PET andor SNB will identify the true negative TN group A positive axillary dissection and negative PET andor SNB will identify the false negative FN subgroup A negative axillary dissection and positive PET andor SNB will identify the false positive FP subgroup Sensitivity TPTP FN and specificity TNTN FP will be determined If patients do not have successful sentinel node surgery or PET scanning they will be included in the analysis of the individual modality which was successful
36 Statistics In order to have an adequate number of node positive patients to test sensitivity an overall total of 240 patients is required The proportion of patients who are node positive is estimated to be 035 A sample of 240 is expected to contain 84 node positive patients and the probability that at least 72 of the 240 patients are node positive is 095 The subsample of 72 node positive patients is sufficient to perform a one-sided test of equivalence for a target sensitivity of 080 and an allowable difference of 010 with significance level of 10 and power of 80The 168 node negative patients from the 240 total permit a one-sided test of equivalence for which the target specificity is 095 and the allowable difference is 005 with significance level of 5 and power of 9043
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