Sentinel Lymph Node After Neoadjuvant Chemotherapy in Breast Carcinoma (GANEA3)
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|ClinicalTrials.gov Identifier: NCT03630913|
Recruitment Status : Recruiting
First Posted : August 15, 2018
Last Update Posted : May 13, 2019
Sentinel lymph node dissection (SLND) after NAC, aimed to reduce the rate of unnecessary axillary lymphadenectomy, is not a standard of care in case of patient with previously involved node before NAC because of a too high false negative rate (FNR).
Clinical consequences of FNR of SLND after NAC are currently unknown. Consequently, contrary to adjuvant setting, a risk of SLND false negative case after NAC is not acceptable.
GANEA3 aims to evaluate the results of an innovative multiparametric strategy combining (1) an identification before chemotherapy of a lymph node involvement using a metal clip and then its analysis after treatment, (2) the analysis of sentinel lymph node (SLN) after NAC, and (3) analysis of biological parameters of breast tumor before and after NAC, to predict axillary status after NAC. This will identify patients with initial lymph node involvement who could benefit from SLN after NAC without additional axillary dissection with a very low FNR (≤1%).
The most "pathological" metastatic lymph node will be identified with a metal clip under ultrasound. They will then receive a NAC before breast and axillary surgery. An assessment of the NAC response at the breast and axillary will be performed by imagery. Then, all patients undergo the resection of the tagged axillary node with the metal clip, SLN detection and biopsy and a complementary axillary lymphadenectomy.
|Condition or disease||Intervention/treatment||Phase|
|Invasive Breast Cancer Axillary Metastases||Procedure: Tagged axillary metastatic node||Not Applicable|
GANEA3 is a prospective multicenter diagnostic study assessing the benefit of targeting initial involved node in complement to SLND and breast tumor characteristics to predict axillary status after NAC.
The diagnostic performances of this strategy will be primarily assessed by the decrease of the FNR with the combined strategy compared to SLND alone.
The primary objective is to evaluate the interest of identifying, before NAC, the initial involved lymph node to improve the prediction of axillary status after NAC.
The main secondary objectives are :
- To assess the feasibility, at the time of the surgery, of the identification and resection of the initially involved lymph node, tagged with the metal clip before NAC ;
- To evaluate the complications related to the setting up of the metal clip for the identification of a lymph node metastatic ;
- To evaluate the interest and impact of immunohistochemical analysis of tagged lymph node and SLN ;
Patients treated for a large early breast cancer (BC) needing NAC undergo axillary sonography assessment routinely performed to seek suspicious nodes. When several suspicious nodes are found only the worst is chosen. A fine needle aspiration is performed to allow cytological examination (biopsy is optional) of the suspicious node. In case of proven axillary involvement, the patient is informed about GANEA 3 study in order to be included.
At this step the patient must accept the study and sign the consent form. The involved node is then tagged (with a metal clip) under sonography. In case of multiple suspicious nodes, the radiologist must choose the worst node in order to tag only one involved node.
Then, then patients will perform their chemotherapy. The choice of NAC regimen is let at the discretion of each participating team.
After NAC, breast tumor size and axillary assessment are performed.
Breast and axillary surgery are performed during the same procedure, 4 to 6 weeks after completion of NAC. Breast surgery can be conservative or radical.
All patients undergo the resection of the tagged axillary node, SLN biopsy and a complementary axillary lymphadenectomy.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||385 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Sentinel Lymph Node After Neoadjuvant Chemotherapy in Breast Carcinoma|
|Actual Study Start Date :||January 8, 2019|
|Estimated Primary Completion Date :||October 10, 2022|
|Estimated Study Completion Date :||October 10, 2022|
Experimental: Tagged axillary metastatic node
Patients undergo axillary sonography assessment routinely performed to seek suspicious nodes. A cytological examination (biopsy is optional) of the suspicious node is performed.
The involved node is then tagged with a metal clip under sonography. Then, patients receive NAC before surgery. Breast surgery (conservative or radical) and axillary surgery are performed during the same procedure, 4 to 6 weeks after completion of NAC.
Procedure: Tagged axillary metastatic node
First, initially metastatic lymph node is tagged with a metal clip under sonography. Then, patients receive NAC before surgery.
Breast surgery (conservative or radical) and axillary surgery are performed during the same procedure, 4 to 6 weeks after completion of NAC.
SLN isotope detection is performed with or without blue dye. All patients undergo the resection of the tagged axillary node, SLN biopsy and a complementary axillary lymphadenectomy.
- False negative rate [ Time Frame: 30 days after surgery ]number of cases of false prediction of absence of lymph node involvement to the total number of cases with metastatic lymph node. The rate of FN will be calculated for the involved lymph node tagged with the metal clip, the sentinel node, and the both
- Identification rate of involved lymph node tagged [ Time Frame: 30 days after surgery ]number of cases where the tagged lymph node with a metal clip node is identified during axillary surgery and analyzed in pathology on the total number of procedures
- Resection rate of involved lymph node tagged [ Time Frame: 30 days after surgery ]number of cases where the tagged lymph node is resected during axillary surgery and analyzed in pathology on the total number of procedures
- Complication rate [ Time Frame: 30 days after surgery ]number of complications related to the axillary lymph node tagging procedure on the total number of procedures
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03630913
|Contact: JEAN-MARC CLASSE, MD||+33240679910||Jean-Marc.Classe@ico.unicancer.fr|
|Contact: Emilie DEBEAUPUIS||+33240679900 ext firstname.lastname@example.org|
|Principal Investigator:||JEAN-MARC CLASSE, MD||ICO NANTES|