This study is a prospective, open label, single-arm study to examine the performance and safety of the SENSEI® laparoscopic tethered gamma probe in patients undergoing 99mTc-nanocolloid SLNB for prostate cancer (PCa) during RP and ePLND surgery. Patients scheduled for RP and ePLND using the standard treatment pathways at each centre will have preoperative 99mTc-nanocolloid imaging. RP and ePLND will be conducted as standard of care, with SLNB guided by the SENSEI® laparoscopic tethered gamma probe carried out after RP and prior to ePLND. The first 2 patients per site (N = 10 in total) are considered to be sufficient to enable further familiarisation with the procedure and use of the probe in addition to the usability work and training that the sites did prior to the start of this study. Subsequent patients will be evaluable for the PP population. The primary analysis of diagnostic performance will be performed using the PP population of patients with SLN identified on preoperative imaging
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
56
SENSEI® laparoscopic tethered gamma probe is an intra-operative laparoscopic gamma probe system
UZ Leuven
Leuven, Belgium
NOT_YET_RECRUITINGInstitute Paoli-Calmettes
Marseille, France
NOT_YET_RECRUITINGUniversity Hospital Essen
Essen, Germany
NOT_YET_RECRUITINGHospital del Mar
Barcelona, Spain
RECRUITINGSentinel lymph node (SLN) detection rate with the SENSEI® laparoscopic tethered gamma probe. Detection rate is defined as the percentage of patients with at least one SLN detected intraoperatively.
Time frame: Length of study finish - 6 Months
Number of SLNs detected with the SENSEI® laparoscopic tethered gamma probe in comparison to preoperative planar LS and SPECT/CT in centres with a SPECT/CT scanner.
Time frame: Length of study finish - 6 Months
Diagnostic performance of the SENSEI® laparoscopic tethered gamma probe for detecting SLNs
Diagnostic performance include sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV). Histopathological tumour status of lymph nodes excised based on the ePLND template will be used as reference standard.
Time frame: Length of study finish - 6 Months
Overall ease of use of the SENSEI® laparoscopic tethered gamma probe.
Time frame: Length of study finish - 6 Months
Radiation safety measurements for the staff.
Time frame: Length of study finish - 6 Months
Duration of surgery
Outcome will be measured from the first skin incision to skin closure (skin to skin).
Time frame: Length of study finish - 6 Months
In centres using a conventional rigid laparoscopic gamma probe:
SLN detection rate, number of SLNs, diagnostic performance and in vivo and ex vivo count rate of the SENSEI® laparoscopic tethered gamma probe in comparison to the conventional rigid laparoscopic gamma probe. In centres using a conventional rigid laparoscopic gamma probe: Overall ease of use of the conventional rigid laparoscopic gamma probe
Time frame: Length of study finish - 6 Months
Comparison of detection rates between robotic, open and manual laparoscopic surgery
Time frame: Length of study finish - 6 Months
Incidence of study-related Adverse Events
Time frame: Length of study finish - 6 Months
Complication rate as measured by Clavien-Dindo classification
Time frame: Length of study finish - 6 Months
In centres using a conventional rigid laparoscopic gamma probe: Overall ease of use of the conventional rigid laparoscopic gamma probe
Outcome will be assessed using questionnaire and ethnographic observations, and at similar time points.
Time frame: Length of study finish - 6 Months
Duration of Sentinel Lymph Node Biopsy separately for each probe used
Duration of SLNB will be measured from the first in vivo measurement to completion of ex vivo measurements of excised SLN specimens and measured separately for each probe used. The end time of ex vivo measurements of the excised ePLND specimens will also be recorded.
Time frame: Length of study finish - 6 Months
Sentinel Lymph Node detection Rate
The 95% Confidence Interval (CI) around the detection rate will allow an estimate of the true detection rate. The sample size directly impacts the precision of the estimate. The sample size of 40 evaluable patients has been selected to provide a reasonable level of precision for the estimate of the SLN detection rate
Time frame: Length of study finish - 6 Months
Number of Sentinel Lymph Nodes
Number of SLNs detected with the SENSEI® laparoscopic tethered gamma probe in comparison to preoperative planar LS and SPECT/CT in centres with a SPECT/CT scanner.
Time frame: Length of study finish - 6 Months
Diagnostic performance and in vivo and ex vivo count rate of the SENSEI® laparoscopic tethered gamma probe in comparison to the conventional rigid laparoscopic gamma probe.
Time frame: Length of study finish - 6 Months
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