scholarly journals Paired-Agent Fluorescence Molecular Imaging of Sentinel Lymph Nodes Using Indocyanine Green as a Control Agent for Antibody-Based Targeted Agents

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Chengyue Li ◽  
Xiaochun Xu ◽  
Nathan McMahon ◽  
Omar Alhaj Ibrahim ◽  
Husain A. Sattar ◽  
...  

Purpose. Paired-agent molecular imaging methods, which employ coadministration of an untargeted, “control” imaging agent with a targeted agent to correct for nonspecific uptake, have been demonstrated to detect 200 cancer cells in a mouse model of metastatic breast cancer. This study demonstrates that indocyanine green (ICG), which is approved for human use, is an ideal control agent for future paired-agent studies to facilitate eventual clinical translation. Methods. The kinetics of ICG were compared with a known ideal control imaging agent, IRDye-700DX-labeled antibody in both healthy and metastatic rat popliteal lymph nodes after coadministration, intradermally in the footpad. Results. The kinetics of ICG and antibody-based imaging agent in tumor-free rat lymph nodes demonstrated a strong correlation with each other (r = 0.98, p<0.001) with a measured binding potential of −0.102 ± 0.03 at 20 min postagent injection, while the kinetics of ICG and targeted imaging agent shows significant separation in the metastatic lymph nodes. Conclusion. This study indicated a potential for microscopic sensitivity to cancer spread in sentinel lymph nodes using ICG as a control agent for antibody-based molecular imaging assays.

2017 ◽  
Vol 49 (4) ◽  
pp. 165-170 ◽  
Author(s):  
Stephanie Rauch ◽  
Anton Haid ◽  
Zerina Jasarevic ◽  
Christoph H. Saely ◽  
Alexander Becherer ◽  
...  

2020 ◽  
Vol 26 (3) ◽  
pp. 511-513
Author(s):  
Naomal Perera ◽  
Nishani Fernando ◽  
Ranali Perera ◽  
Prasanna Jayasekara ◽  
Bimalka Senevirathne ◽  
...  

2020 ◽  
Vol 4 ◽  
pp. 9-9
Author(s):  
Priya S. Bhakta ◽  
Alex W. Farnand ◽  
Maria A. Osipova ◽  
Mark M. Connolly

2019 ◽  
Vol 29 (1) ◽  
pp. 53-59
Author(s):  
J A Harold ◽  
D Uyar ◽  
J S Rader ◽  
E Bishop ◽  
M Nugent ◽  
...  

ObjectiveTo identify factors that affect successful adaptation of sentinel lymph node mapping and those that lead to unintended adipose-only sentinel lymph node identification.MethodsSurgical and pathological data were prospectively collected on patients with endometrial cancer who underwent sentinel lymph node mapping with indocyanine green with or without pelvic and/or para-aortic lymph node dissection between November 2013 and April 2017. All mapping cases were performed with the robotic system. Adipose-only specimens were defined as a sentinel lymph node without a pathologically identified lymph node after ultrastaging.ResultsA total of 202 patients were included: 83% had endometrioid pathology, 12% serous, 3% carcinosarcoma, and 2% clear cell, with mixed pathology noted in 2%. The bilateral sentinel lymph node detection rate was 66%, and the rate of mapping at least a unilateral sentinel lymph node was 86%. Neither the bilateral nor the unilateral sentinel lymph node mapping rate changed with increased surgeon experience. The rate of adipose-only sentinel lymph node identification was more frequent when comparing the first 10 cases (37%), cases 11 – 30 (28%), and > 30 cases (9%) (P = 0.006). Body mass index > 30 kg/m2, uterine fibroids, The International Federation of Gynecology and Obstetrics (FIGO) grade, and histology were not found to have a statistically significant impact on either sentinel lymph node identification or adipose-only sentinel lymph node identification. Adipose-only sentinel lymph nodes were more likely with increased time from cervical injection to identification of the sentinel lymph node in the right hemipelvis. The median range was 28 min (14–73) for true sentinel lymph node identification vs 33 min (23–74) for adipose-only sentinel lymph node identification (P = 0.02).ConclusionPatient and surgeon factors did not impact the identification of sentinel lymph nodes over time. Adipose-only sentinel lymph nodes were more frequently identified in the initial cases and represent a potential complication to adapting sentinel lymph node biopsy without lymphadenectomy. The increase in adipose-only sentinel lymph node identification that was associated with time from cervical injection may represent delayed or disrupted uptake of indocyanine green.


2019 ◽  
Vol 29 (9) ◽  
pp. 1437-1439
Author(s):  
Giovanni Scambia ◽  
Camilla Nero ◽  
Stefano Uccella ◽  
Enrico Vizza ◽  
Fabio Ghezzi ◽  
...  

BackgroundSystematic para-aortic and bilateral pelvic lymphadenectomy is included in the standard comprehensive surgical staging in presumed early epithelial ovarian cancer. No prospective randomized evidence suggests it has potential therapeutic value, and related morbidity is not negligible.Primary Objective(s)To assess sensitivity, safety, and feasibility of the sentinel lymph node technique in identifying the presence of lymph node metastases in patients with early stage epithelial ovarian cancer.Study HypothesisSentinel lymph node detection with indocyanine green can accurately predict nodal status in a cohort of women with early stage epithelial ovarian cancer.Trial DesignThe SELLY trial is a prospective phase II interventional multicenter study.Major Inclusion/Exclusion CriteriaInclusion criteria: Eastern Cooperative Oncology Group 0–1, apparent International Federation of Gynecology and Obstetrics (FIGO) stage I-II, histologically proven epithelial ovarian cancer.Exclusion criteria: evidence of carcinomatosis, mucinous only at definitive histology.Endpoint(s)Primary endpoint is sensitivity (true positive rate). Secondary endpoints include safety (complications rate of the procedure) and feasibility.Sample SizeAssuming a sensitivity of 98.5% in predicting positive sentinel lymph nodes at histology, a pathological lymph node prevalence of 14.2%, a precision of estimate (ie, the maximum marginal error) d=5%, and a type I error α=0.05, a sample size of 160 patients is needed to test the general hypothesis (ie, to answer whether sentinel lymph nodes identified with indocyanine green can accurately predict nodal status at histology of patients with apparently early epithelial ovarian cancer). Assuming a drop-out rate of 10%, a total of 176 patients will be enrolled in the study.Estimated Dates for Completing Accrual and Presenting ResultsThe accrual should be completed by December 2020 and results should be presented by March 2021.Trial RegistrationThe trial is registered at clinicaltrials.gov (NCT03563781).


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