Ambulatory SNP Under Local Anaesthesia in a Subgroup of Breast Cancer Patients - Trial (AMBULANT)
Rationale: In breast cancer (BC) patients, lymph node status is a key prognostic indicator. At present, axillary ultrasound (US) with subsequent fine needle aspiration cytology (FNAC) of suspicious lymph nodes (US+FNAC) is widely used as a pre-operative staging method. When US+FNAC is negative, a sentinel node procedure (SNP) is performed during breast surgery. Nowadays, an axillary lymph node dissection (ALND) is generally performed if one of the abovementioned diagnostic entities reveals lymph node metastases. However, the extensive role of ALND in BC patients with lymph node metastases may change or diminish in upcoming years due to emerging evidence that completion ALND (cALND) does not affect disease-free survival and overall survival in early BC patients with (sentinel) node-positive disease. Whether ALND is needed in these patients, should be based on (axillary) tumour load. Because of the fact that tumour load can only be reliably evaluated by SNP and not by US+FNAC, the role of SNP might become even more important in upcoming years.
Ideally, the status of this sentinel lymph node is known prior to breast surgery, so a patient tailored treatment plan can be made and discussed with the patient before breast surgery. In this context, it would be very logical to perform a SNP under local anaesthesia (LA), prior to breast surgery. This might not only lead to significantly less two-step surgical procedures under general anaesthesia (GA), but might also lead to a reduction of depressive symptoms and anxiety and improved quality of life (QoL) of BC patients, because BC patients are in particular risk for psychological distress in the first three months after diagnosis of BC. Knowing lymph node status and the complete treatment plan as soon as possible (by performing a SNP under LA), might reduce this psychological distress. To investigate which BC patients would benefit most from SNP under LA, the investigators recently analysed 1132 BC patients retrospectively. Both prevalence of axillary lymph node metastases and prevalence of false negative results of US+FNAC were directly associated with age <60 years and with primary breast tumour size >20 mm. Hence, these BC patients might benefit most from SNP under LA. In the present study, the value of SNP under LA in these BC patients (i.e. <60 years with a breast carcinoma >20 mm) will be analysed.
Objectives: Reduction of the mean number of operations under general anaesthesia per patient. Improvement of QoL. Reduction of depressive symptoms and experienced anxiety.
Study design: Prospective single centre randomised controlled clinical trial. Study population: Women aged 18 to 60 years who are diagnosed with BC AND with a tumour size of >20 mm ultrasonographically AND with a negative or inconclusive pre-operative US+FNAC.
Intervention: Sentinel Node Procedure under Local Anaesthesia (SNP under LA) Control: Traditional Sentinel Node Procedure under General Anaesthesia (SNP under GA) Main study parameters: Primary outcome parameters are the number of operations under GA per patient and the number of operations under LA per patient. Secondary outcome parameters are QoL, experienced depressive symptoms and anxiety.
Timeline and statistics: The inclusion period will be conducted from the 1st of July 2014 to the 1st of August 2015, and 80 patients will be enrolled in this study (alpha 0.05; power 0.8). Inclusion of 80 patients will be sufficient to reduce the number of two-stage surgical procedures under general anaesthesia with 30%. Data will be analysed using descriptive statistics, Chi-squared test, Fisher's exact test, Mann-Whitney U test, Kruskall-Wallis test, students t-test, ANOVA, paired t-test, Wilcoxon signed-rank test, Friedman test, Pearson's and Spearman's rank correlation coefficients and finally logistic and linear regression analysis.
|Breast Neoplasms||Procedure: Sentinel Node Procedure under Local Anaesthesia Procedure: Sentinel Node Procedure under General Anaesthesia|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||A Prospective Single-centre Randomised Controlled Clinical Trial Comparing Sentinel Node Procedure Under Local Anaesthesia to Traditional Sentinel Node Procedure Under General Anaesthesia in Patients <60 Years With a Breast Carcinoma >20 mm.|
- Number of operations under general anaesthesia [ Time Frame: 6 months ]
- Number of operations under local anaesthesia [ Time Frame: 6 months ]
- The number of patients in whom breast surgery is performed ≤21 days. [ Time Frame: 6 months ]
- Quality of Life [ Time Frame: 6 months ]Quality of Life is measured with the WHOQOL-bref questionnaire
- Depressive symptoms [ Time Frame: 6 months ]Depressive symptoms are measured with the Centre for Epidemiological Studies-Depression scale (CES-D)
- Anxiety [ Time Frame: 6 months ]Anxiety is measured with the State-and-Trait-Anxiety-Inventory (STAI)
- Pain during SNP under local anaesthesia [ Time Frame: 6 months ]Pain during SNP under local anaesthesia is measured with a Numeric Pain Rating Scale
- Duration of SNP under local anaesthesia [ Time Frame: 6 months ]
- Duration of SNP under general anaesthesia [ Time Frame: 6 months ]
- Number of lymph nodes excised by SNP under local anaesthesia [ Time Frame: 6 months ]
- Number of lymph nodes excised by SNP under general anaesthesia [ Time Frame: 6 months ]
|Study Start Date:||January 2015|
|Estimated Study Completion Date:||August 2017|
|Estimated Primary Completion Date:||December 2016 (Final data collection date for primary outcome measure)|
Sentinel Node Procedure under General Anaesthesia
|Procedure: Sentinel Node Procedure under General Anaesthesia|
Sentinel Node Procedure under Local Anaesthesia
|Procedure: Sentinel Node Procedure under Local Anaesthesia|
Please refer to this study by its ClinicalTrials.gov identifier: NCT02187718
|Contact: Martijn Leenders, MDfirstname.lastname@example.org|
|Contact: Hermien Schreurs, MD, PhDemail@example.com|
|Medical Center Alkmaar||Not yet recruiting|
|Alkmaar, Noord-Holland, Netherlands|
|Sub-Investigator: Martijn Leenders, MD|
|Principal Investigator: Hermien Schreurs, MD, PhD|
|Principal Investigator: Anne Roukema, MD, PhD, Prof|
|Sub-Investigator: Shirley Go, MD|
|Sub-Investigator: Henk-Jan Slooten van, MD, PhD|
|Sub-Investigator: Metha Klaver, PhD|
|Sub-Investigator: Tjeerd Ploeg, van der, PhD|
|Principal Investigator:||Hermien Schreurs, MD, PhD||Medical Center Alkmaar|