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TAM receptors (TYRO3, AXL, and MERTK) comprise a family of homologous receptor tyrosine kinases (RTK) that are expressed across a range of liquid and solid tumors where they contribute to both oncogenic signaling to promote tumor proliferation and survival, as well as expressed on myeloid and immune cells where they function to suppress host anti-tumor immunity. In recent years, several strategies have been employed to inhibit TAM kinases, most notably small molecule tyrosine kinase inhibitors and inhibitory neutralizing monoclonal antibodies (mAbs) that block receptor dimerization. Targeted protein degraders (TPD) use the ubiquitin proteasome pathway to redirect E3 ubiquitin ligase activity and target specific proteins for degradation. Here we employ first-in-class TPDs specific for MERTK/TAMs that consist of a cereblon E3 ligase binder linked to a tyrosine kinase inhibitor targeting MERTK and/or AXL and TYRO3. A series of MERTK TPDs were designed and investigated for their capacity to selectively degrade MERTK chimeric receptors, reduce surface expression on primary efferocytic bone marrow-derived macrophages, and impact on functional reduction in efferocytosis (clearance of apoptotic cells). We demonstrate proof-of-concept and establish that TPDs can be tailored to either selectivity degrades MERTK or concurrently degrade multiple TAMs and modulate receptor expression in vitro and in vivo. This work demonstrates the utility of proteome editing, enabled by tool degraders developed here towards dissecting the therapeutically relevant pathway biology in preclinical models, and the ability for TPDs to degrade transmembrane proteins. These data also provide proof of concept that TPDs may serve as a viable therapeutic strategy for targeting MERTK and other TAMs and that this technology could be expanded to other therapeutically relevant transmembrane proteins.

We have previously shown N-arylnaphthamides can be potent inhibitors of vascular endothelial growth factor receptors (VEGFRs). N-Alkyl and N-unsubstituted naphthamides were prepared and found to yield nanomolar inhibitors of VEGFR-2 (KDR) with an improved selectivity profile against a panel of tyrosine and serine/threonine kinases. The inhibitory activity of this series was retained at the cellular level. Naphthamides 3, 20, and 22exhibited good pharmacokinetics following oral dosing and showed potent inhibition of VEGF-induced angiogenesis in the rat corneal model. Once-daily oral administration of 22for 14 days led to 85% inhibition of established HT29 colon cancer and Calu-6 lung cancer xenografts at doses of 10 and 20 mg/kg, respectively. [ABSTRACT FROM AUTHOR]

A series of naphthyl-based compounds were synthesized as potential inhibitors of vascular endothelial growth factor (VEGF) receptors. Investigations of structure–activity relationships led to the identification of a series of naphthamides that are potent inhibitors of the VEGF receptor tyrosine kinase family. Numerous analogues demonstrated low nanomolar inhibition of VEGF-dependent human umbilical vein endothelial cell (HUVEC) proliferation, and of these several compounds possessed favorable pharmacokinetic (PK) profiles. In particular, compound 48demonstrated significant antitumor efficacy against established HT29 human colon adenocarcinoma xenografts implanted in athymic mice. A full account of the preparation, structure–activity relationships, pharmacokinetic properties, and pharmacology of analogues within this series is presented. [ABSTRACT FROM AUTHOR]

Introduction: The advanced lung cancer inflammation index (ALI), which combines inflammation and nutrition data, was recently proposed as a prognostic biomarker. We assessed the impact of ALI on overall survival (OS) among patients undergoing surgery for intrahepatic cholangiocarcinoma (ICC)., Methods: Patients who underwent surgery for ICC were identified from an international cohort. ALI was calculated as body-mass index (BMI)∗albumin/neutrophil-to-lymphocyte ratio; patients were categorized into "low-" and "high-ALI" using log-rank statistics. The impact of ALI on OS was compared against other inflammatory markers (i.e., neutrophil-to-lymphocyte ratio [NLR], platelet-to-lymphocyte ratio [PLR], systemic immune inflammation index [SII = platelets∗NLR]) using Harrell's Concordance index (C-index) and the Akaike Information Criterion (AIC). To minimize intergroup differences, propensity score matching was employed., Results: Among 1045 patients, more than one-half of individuals underwent major hepatectomy (n = 582, 55.7 %), median tumor size was 5.5 cm (IQR, 3.8-7.8), and median ALI was 38.9 (IQR 26.5-57.2). On multivariate analysis, low ALI was an independent risk factor for worse OS (HR 1.21, 95 % CI 1.01-1.46; p = 0.04). Patients with low ALI had worse 5-year OS (36.9 % vs. 49.9 %; p < 0.001), which remained significant after PSM (36.9 % vs. 41.3 %; p = 0.039). ALI had a comparable discriminatory ability compared with NLR, PLR, and SII (C-index: 0.646 vs. 0.644 vs. 0.640 vs. 0.641, respectively), yet had a lower AIC (5475.31 vs. 5546.80 vs. 5550.45 vs. 5548.62, respectively) suggesting slightly better model fit and accuracy., Conclusions: ALI was an independent predictor of OS among patients undergoing surgery for ICC. Nutritional and inflammatory markers should be incorporated into predictive models to improve prognostic stratification., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.)

Background: Neoadjuvant chemotherapy (NC) for early pancreatic ductal adenocarcinoma (PDAC) remains controversial. We investigate the adoption of NC and its impact on survival in clinical T1 (cT1) PDAC., Methods: National Cancer Database (2006-2017) was reviewed for cT1 PDAC. Patients receiving NC and surgery were compared with patients undergoing upfront surgery (US)., Results: A total of 5886 patients were included. NC use increased from 4.8% in 2006 to 18.8% in 2017. The NC group (n = 618) versus the US group (n = 5268) had: younger age (66 years vs. 68 years), smaller tumor size (2 cm vs. 2.2 cm), more pancreas head tumors (77% vs. 70.6%), lower lymph-vascular invasion (25.9% vs. 40.6%), and less lymph node positivity (43.6% vs. 54.5%), p < 0.001. Factors associated with receipt of NC were: younger age, recent year of diagnosis, and treatment at an academic program. In the NC group versus the US group, median OS was 35.2 months versus 28.3 months, p < 0.001. Factors associated with improved survival included: well differentiated pathology, R0 surgical margins, and receipt of chemotherapy., Conclusion: In cT1 PDAC, chemotherapy is associated with improved survival. In a surgery-first approach, only 59% of patients receive adjuvant chemotherapy. These data suggest consideration of neoadjuvant therapy for early pancreatic cancer., (© 2024 Wiley Periodicals LLC.)

Background: The prognostic role of the fibrosis-4 (FIB-4) index relative to intrahepatic cholangiocarcinoma (ICC) after hepatectomy remains unclear. This study sought to characterize the impact of the FIB-4 index and tumor burden score (TBS) on recurrence and overall survival (OS)., Methods: ICC patients undergoing hepatectomy (2000-2020) were identified using a multi-institutional database. Patients were categorized as low (low TBS/low FIB-4 index), intermediate (low TBS/high FIB-4 index or high TBS/low FIB-4 index), and high (high TBS/high FIB-4 index)., Results: Among 1168 patients in different TBS and FIB-4 index cohorts, 3-year recurrence varied considerably. For instance, among the patients with low TBS, individuals with a high FIB-4 index had a greater risk of recurrence than patients with a low FIB-4 index (59.9 vs. 47.7%; P = 0.01). Among patients with a high TBS, individuals with a high versus a low FIB-4 index had a higher incidence of recurrence (76.8 vs. 69.0%; P = 0.04). A similar pattern was observed among patients with both a low FIB-4 index (low [47.7%] vs. high [69.0%] TBS) and a high FIB-4 index (low [59.9%] vs. high [76.8%] TBS; both P < 0.001). Patients with a high [27.5%] versus a low [48.8%] TBS; P < 0.001) and patients with a high [34.2%] versus a low [43.5%] FIB-4 index; P = 0.01) had a worse OS. The multivariable analysis demonstrated an increasing risk of recurrence in the intermediate-index (hazard ratio [HR], 1.61; 95% confidence interval [CI], 1.20-2.16; P = 0.001) and high-index (HR, 2.13; 95% CI 1.45-3.13; P < 0.001) groups versus the low-index group., Conclusions: Both tumor-related and non-tumorous characteristics should be used to predict risk of recurrence and survival more accurately among patients with ICC following hepatic resection., (© 2024. Society of Surgical Oncology.)

Background and Objectives: Among patients undergoing liver resection for intrahepatic cholangiocarcinoma (ICC), perioperative bleeding requiring blood transfusion is a common complication, yet preoperative identification of patients at risk for transfusion remains challenging. The objective of this study was to develop a preoperative risk score for blood transfusion requirement during surgery for ICC., Methods: Patients undergoing curative-intent liver surgery for ICC (1990-2020) were identified from a multi-institutional database. A predictive model was developed and validated. An easy-to-use risk calculator was made available online., Results: Among 1420 patients, 300 (21.1%) received an intraoperative transfusion. Independent predictors of transfusion included severe preoperative anemia (OR = 1.65, 95% CI 1.10-2.47), T2 category or higher (OR = 2.00, 95% CI 1.36-3.02), positive lymph nodes (OR = 1.75, 95% CI 1.32-2.32) and major resection (OR = 2.56, 95%CI 1.85-3.58). Receipt of blood transfusion significantly correlated with worse outcomes. The model showed good discriminative ability in both training (AUC = 0.68, 95% CI 0.66-0.72) and bootstrapping validation (C-index = 0.67, 95% CI 0.65-0.70) cohorts. An online risk calculator of blood transfusion requirement was developed (https://catalano-giovanni.shinyapps.io/TransfusionRisk)., Conclusions: Intraoperative blood transfusion was significantly associated with poor postoperative outcomes among patients undergoing surgery for ICC. The identification of patients at high risk of transfusion could improve perioperative patient care and blood resources allocation., (© 2024 The Author(s). Journal of Surgical Oncology published by Wiley Periodicals LLC.)

Objectives: The objective of the current study was to characterize prognostic factors related to long-term recurrence-free survival after curative-intent resection of intrahepatic cholangiocarcinoma (ICC)., Methods: Data on patients who underwent curative-intent resection for ICC between 2000 and 2020 were collected from an international multi-institutional database. Prognostic factors were investigated among patients who recurred within 5 years versus long-term survivors who survived more than 5 years with no recurrence., Results: Among 635 patients who underwent curative-intent resection for ICC, 104 (16.4%) patients were long-term survivors with no recurrence beyond 5 years after surgery. Patients who survived for more than 5 years with no recurrence were more likely to have less aggressive tumor features, as well as have undergone an R0 resection versus patients who recurred within 5 years after resection. On multivariable analysis, tumor size (>5 cm) (HR: 1.535, 95% CI: 1.254-1.879), satellite lesions (HR: 1.253, 95% CI: 1.003-1.564), and lymph node metastasis (HR: 1.733, 95% CI: 1.349-2.227) were independently associated with recurrence within 5 years. Patients who recurred beyond 5 years (n = 23), 2-5 years (n = 60), and within 2 years (n = 471) had an incrementally worse post-recurrence survival (PRS, 28.0 vs. 20.0 vs. 12.0 months, p = 0.032). Among patients with N0 status, tumor size (>5 cm) (HR: 1.612, 95% CI: 1.087-2.390) and perineural invasion (PNI) (HR: 1.562,95% CI: 1.081-2.255) were risk factors associated with recurrence. Among patients with N1 disease, only a minority (5/128, 3.9%) of patients survived with no recurrence to 5 years., Conclusion: Roughly 1 in 6 patients survived for more than 5 years with no recurrence following curative-intent resection of ICC. Among N0 patients, tumor recurrence was associated with tumor size and PNI. Only a small subset of N1 patients experienced long-term survival., (© 2024 Wiley Periodicals LLC.)

Background and Objectives: An elevated platelet count may reflect neoplastic and inflammatory states, with cytokine-driven overproduction of platelets. The objective of this study was to evaluate the prognostic utility of high platelet count among patients undergoing curative-intent liver surgery for intrahepatic cholangiocarcinoma (ICC)., Methods: An international, multi-institutional cohort was used to identify patients undergoing curative-intent liver resection for ICC (2000-2020). A high platelet count was defined as platelets >300 *10 9 /L. The relationship between preoperative platelet count, cancer-specific survival (CSS), and overall survival (OS) was examined., Results: Among 825 patients undergoing curative-intent resection for ICC, 139 had a high platelet count, which correlated with multifocal disease, lymph nodes metastasis, poor to undifferentiated grade, and microvascular invasion. Patients with high platelet counts had worse 5-year (35.8% vs. 46.7%, p = 0.009) CSS and OS (24.8% vs. 39.8%, p < 0.001), relative to patients with a low platelet count. After controlling for relevant clinicopathologic factors, high platelet count remained an adverse independent predictor of CSS (HR = 1.46, 95% CI 1.02-2.09) and OS (HR = 1.59, 95% CI 1.14-2.22)., Conclusions: High platelet count was associated with worse tumor characteristics and poor long-term CSS and OS. Platelet count represents a readily-available laboratory value that may preoperatively improve risk-stratification of patients undergoing curative-intent liver resection for ICC., (© 2024 The Author(s). Journal of Surgical Oncology published by Wiley Periodicals LLC.)

Significance: In in-line digital holographic microscopy (DHM), twin-image artifacts pose a significant challenge, and reduction or complete elimination is essential for object reconstruction., Aim: To facilitate object reconstruction using a single hologram, significantly reduce inaccuracies, and avoid iterative processing, a digital holographic reconstruction algorithm called phase-support constraint on phase-only function (PCOF) is presented., Approach: In-line DHM simulations and tabletop experiments employing the sliding-window approach are used to compute the arithmetic mean and variance of the phase values in the reconstructed image. A support constraint mask, through variance thresholding, effectively enabled twin-image artifacts., Results: Quantitative evaluations using metrics such as mean squared error, peak signal-to-noise ratio, and mean structural similarity index show PCOF's superior capability in eliminating twin-image artifacts and achieving high-fidelity reconstructions compared with conventional methods such as angular spectrum and iterative phase retrieval methods., Conclusions: PCOF stands as a promising approach to in-line digital holographic reconstruction, offering a robust solution to mitigate twin-image artifacts and enhance the fidelity of reconstructed objects., (© 2024 The Authors.)

Introduction: Although up to 50-70% of patients with intrahepatic cholangiocarcinoma (ICC) recur following resection, data to predict post-recurrence survival (PRS) and guide treatment of recurrence are limited., Methods: Patients who underwent resection of ICC between 2000 and 2020 were identified from an international, multi-institutional database. Data on primary disease as well as laboratory and radiologic data on recurrent disease were collected. Factors associated with PRS were examined and a novel scoring system to predict PRS (PRS score) was developed and internally validated., Results: Among 986 individuals who underwent resection for ICC, 588 (59.6%) patients developed recurrence at a median follow up of 20.3 months. Among patients who experienced a recurrence, 97 (16.5%) underwent re-resection/ablation for recurrent ICC; 88 (15.0%) and 403 (68.5%) patients received intra-arterial treatment or systemic chemotherapy/supportive therapy, respectively. Patient American Society of Anesthesiologists (ASA) class > 2 (1 point), primary tumor N1/Nx status (1 point), primary R1 resection margin (1 point), primary tumor G3/G4 grade (1 point), carbohydrate antigen (CA) 19-9 > 37 UI/mL (2 points) at recurrence and carcinoembryonic antigen (CEA) > 5 ng/mL (2 points) at recurrence, as well as recurrent bilateral disease (1 point) and early recurrence (1 point) were included in the PRS score. The PRS score successfully stratified patients relative to PRS and demonstrated strong discriminatory ability (C-index 0.70, 95% confidence interval 0.68-0.72). While a PRS score of 0-3 was associated with a 3-year PRS of 62.5% following resection/ablation for recurrent ICC, a PRS score > 3 was associated with a low 3-year PRS of 35.5% (p = 0.03)., Conclusions: The PRS score demonstrated strong discriminatory ability to predict PRS among patients who had developed recurrence following initial resection of ICC. The PRS score may be a useful tool to guide treatment among patients with recurrent ICC., (© 2024. Society of Surgical Oncology.)

Introduction: Most solid organ transplants originate from donors meeting criteria for death by neurological criteria (DNC). Within the organ donor, physiological responses to brain death increase the risk of ischaemia reperfusion injury and delayed graft function. Donor preconditioning with calcineurin inhibition may reduce this risk., Methods and Analysis: We designed a multicentre placebo-controlled pilot randomised trial involving nine organ donation hospitals and all 28 transplant programmes in the Canadian provinces of Ontario and Québec. We planned to enrol 90 DNC donors and their approximately 324 organ recipients, totalling 414 participants. Donors receive an intravenous infusion of either tacrolimus 0.02 mg/kg over 4 hours prior to organ retrieval, or a matching placebo, while monitored in an intensive care unit for any haemodynamic changes during the infusion. Among all study organ recipients, we record measures of graft function for the first 7 days in hospital and we will record graft survival after 1 year. We examine the feasibility of this trial with respect to the proportion of all eligible donors enrolled and the proportion of all eligible transplant recipients consenting to receive a CINERGY organ transplant and to allow the use of their health data for study purposes. We will report these feasibility outcomes as proportions with 95% CIs. We also record any barriers encountered in the launch and in the implementation of this trial with detailed source documentation., Ethics and Dissemination: We will disseminate trial results through publications and presentations at participating sites and conferences. This study has been approved by Health Canada (HC6-24-c241083) and by the Research Ethics Boards of all participating sites and in Québec (MP-31-2020-3348) and Clinical Trials Ontario (Project #3309)., Trial Registration Number: NCT05148715., Competing Interests: Competing interests: CL, FDA, FLam, FLau, F-MC and MC are recipients of research career awards from the Fonds de recherche du Québec-Santé. AFT is the chairholder of the Canada Research Chair in Critical Care Neurology and Trauma. FDA, MW and PC received stipends for their role at Transplant Québec MaS holds research grants from the Canadian Institute of Health Research and the New Frontiers in Research Fund related to organ donation research and received a stipend for his role as the Regional Medical Lead (Donation) from Ontario Health (Trillium Gift of Life Network). MSe, RB, M-HM, MMa, A-JF, BB, AD, EC, SHo, LB, HT, PL, JGB, MKS, KEAB, JZ, SE, GK, AH, SHa, BR, SJWO, DT and MMe declare no competing interests., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Pancreatic ductal adenocarcinoma (PDAC) is most often metastatic at diagnosis. As systemic therapy continues to improve alongside advanced surgical techniques, the focus has shifted toward defining biologic, rather than technical, resectability. Several centers have reported metastasectomy for oligometastatic PDAC, yet the indications and potential benefits remain unclear. In this review, we attempt to define oligometastatic disease in PDAC and to explore the rationale for metastasectomy. We evaluate the existing evidence for metastasectomy in liver, peritoneum, and lung individually, assessing the safety and oncologic outcomes for each. Furthermore, we explore contemporary biomarkers of biological resectability in oligometastatic PDAC, including radiographic findings, biochemical markers (such as CA 19-9 and CEA), inflammatory markers (including neutrophil-to-lymphocyte ratio, C-reactive protein, and scoring indices), and liquid biopsy techniques. With careful consideration of existing data, we explore the concept of biologic resectability in guiding patient selection for metastasectomy in PDAC., (© 2024. The Author(s).)

Introduction: Benchmarking in surgery has been proposed as a means to compare results across institutions to establish best practices. We sought to define benchmark values for hepatectomy for intrahepatic cholangiocarcinoma (ICC) across an international population., Methods: Patients who underwent liver resection for ICC between 1990 and 2020 were identified from an international database, including 14 Eastern and Western institutions. Patients operated on at high-volume centers who had no preoperative jaundice, ASA class <3, body mass index <35 km/m 2 , without need for bile duct or vascular resection were chosen as the benchmark group., Results: Among 1193 patients who underwent curative-intent hepatectomy for ICC, 600 (50.3%) were included in the benchmark group. Among benchmark patients, median age was 58.0 years (interquartile range [IQR] 49.0-67.0), only 28 (4.7%) patients received neoadjuvant therapy, and most patients had a minor resection (n = 499, 83.2%). Benchmark values included ≥3 lymph nodes retrieved when lymphadenectomy was performed, blood loss ≤600 mL, perioperative blood transfusion rate ≤42.9%, and operative time ≤339 min. The postoperative benchmark values included TOO achievement ≥59.3%, positive resection margin ≤27.5%, 30-day readmission ≤3.6%, Clavien-Dindo III or more complications ≤14.3%, and 90-day mortality ≤4.8%, as well as hospital stay ≤14 days., Conclusions: Benchmark cutoffs targeting short-term perioperative outcomes can help to facilitate comparisons across hospitals performing liver resection for ICC, assess inter-institutional variation, and identify the highest-performing centers to improve surgical and oncologic outcomes., (© 2024. The Author(s).)

Introduction: Data on clinical characteristics and disease-specific prognosis among patients with early onset intrahepatic cholangiocarcinoma (ICC) are currently limited., Methods: Patients undergoing hepatectomy for ICC between 2000 and 2020 were identified by using a multi-institutional database. The association of early (≤50 years) versus typical onset (>50 years) ICC with recurrence-free (RFS) and disease-specific survival (DSS) was assessed in the multi-institutional database and validated in an external cohort. The genomic and transcriptomic profiles of early versus late onset ICC were analyzed by using the Total Cancer Genome Atlas (TCGA) and Memorial Sloan Kettering Cancer Center databases., Results: Among 971 patients undergoing resection for ICC, 22.7% (n = 220) had early-onset ICC. Patients with early-onset ICC had worse 5-year RFS (24.1% vs. 29.7%, p < 0.05) and DSS (36.5% vs. 48.9%, p = 0.03) compared with patients with typical onset ICC despite having earlier T-stage tumors and lower rates of microvascular invasion. In the validation cohort, patients with early-onset ICC had worse 5-year RFS (7.4% vs. 20.5%, p = 0.002) compared with individuals with typical onset ICC. Using the TCGA cohort, 652 and 266 genes were found to be upregulated (including ATP8A2) and downregulated (including UTY and KDM5D) in early versus typical onset ICC, respectively. Genes frequently implicated as oncogenic drivers, including CDKN2A, IDH1, BRAF, and FGFR2 were infrequently mutated in the early-onset ICC patients., Conclusions: Early-onset ICC has distinct clinical and genomic/transcriptomic features. Morphologic and clinicopathologic characteristics were unable to fully explain differences in outcomes among early versus typical onset ICC patients. The current study offers a preliminary landscape of the molecular features of early-onset ICC., (© 2024. The Author(s).)

Background: This study aimed to develop a tool based on preoperative factors to predict the risk of perioperative complications based on the Comprehensive Complication Index (CCI) and long-term survival outcomes after liver resection for primary liver cancer., Methods: Patients with hepatocellular carcinoma (HCC) or intrahepatic cholangiocarcinoma (ICC) undergoing curative-intent hepatectomy between 1990 and 2020 were identified using a multi-institutional international database., Results: Among 1411 patients who underwent curative-intent hepatic resection (HCC: 997, 70.7%; ICC: 414, 29.3%), median patient age was 66.0 years (IQR, 57.0-73.0), and most patients were male (n = 1001, 70.9%). In the postoperative setting, 699 patients (49.5%) experienced a complication; moreover, 112 patients (7.9%) had major complications. Although most patients had a favorable risk complication-overall survival (CompOS) profile (CCI score > 40 risk of <30% and median survival of >5 years: n = 778, 55.1%), 553 patients (39.2%) had an intermediate-risk profile, and 80 patients (5.7%) had a very unfavorable risk profile (CCI score > 40 risk of ≥30% and/or median survival of ≤1.5 years). The areas under the curve of the test and validation cohorts were 0.73 and 0.76, respectively., Conclusion: The CompOS risk model accurately stratified patients relative to short- and long-term risks, identifying a subset of patients at a high risk of major complications and poor overall survival., (Copyright © 2023 Society for Surgery of the Alimentary Tract. Published by Elsevier Inc. All rights reserved.)

Background: Intrahepatic cholangiocarcinoma (ICC) constitutes a group of heterogeneous malignancies within the liver. We sought to subtype ICC based on anatomical origin of tumors, as well as propose modifications of the current classification system., Methods: Patients undergoing curative-intent resection for ICC, hilar cholangiocarcinoma (CCA), or hepatocellular carcinoma (HCC) were identified from three international multi-institutional consortia of databases. Clinicopathological characteristics and survival outcomes were assessed., Results: Among 1264 patients with ICC, 1066 (84.3%) were classified as ICC-peripheral subtype, whereas 198 (15.7%) were categorized as ICC-perihilar subtype. Compared with ICC-peripheral subtype, ICC-perihilar subtype was more often associated with aggressive tumor characteristics, including a higher incidence of nodal metastasis, macro- and microvascular invasion, perineural invasion, as well as worse overall survival (OS) (median: ICC-perihilar 19.8 vs. ICC-peripheral 37.1 months; p < 0.001) and disease-free survival (DFS) (median: ICC-perihilar 12.8 vs. ICC-peripheral 15.2 months; p = 0.019). ICC-perihilar subtype and hilar CCA had comparable OS (19.8 vs. 21.4 months; p = 0.581) and DFS (12.8 vs. 16.8 months; p = 0.140). ICC-peripheral subtype tumors were associated with more advanced tumor features, as well as worse survival outcomes versus HCC (OS, median: ICC-peripheral 37.1 vs. HCC 74.3 months; p < 0.001; DFS, median: ICC-peripheral 15.2 vs. HCC 45.5 months; p < 0.001)., Conclusions: ICC should be classified as ICC-perihilar and ICC-peripheral subtype based on distinct clinicopathological features and survival outcomes. ICC-perihilar subtype behaved more like carcinoma of the bile duct (i.e., hilar CCA), whereas ICC-peripheral subtype had features and a prognosis more akin to a primary liver malignancy., (© 2023. Society of Surgical Oncology.)

Objective: To understand Nova Scotian family physicians' and emergency department (ED) physicians' knowledge of, attitudes about, and experience with organ donation and transplantation in the context of the Human Organ and Tissue Donation Act (HOTDA)., Design: An electronic, self-administered survey., Setting: Nova Scotia., Participants: All family physicians and ED physicians practising in Nova Scotia., Main Outcome Measures: Demographic characteristics, experience with organ donation and transplantation, knowledge about organ donation and HOTDA, attitudes toward organ donation and HOTDA, and opportunities for and barriers to the implementation of the HOTDA in clinical practice. Survey results were analyzed using descriptive statistics., Results: Overall, 211 family physicians and 73 ED physicians responded to the survey. Most respondents had favourable attitudes around organ donation and most supported a deemed consent model. Nearly three-quarters of family physicians indicated they have a conversation around organ donation only if it is initiated by the patient. In the ED setting, the most common barriers to organ donation and deemed consent were lack of familiarity with the organ donation referral process, refusal of permission from families, and unknown wishes of the deceased., Conclusion: Family physicians and ED physicians had positive attitudes toward organ donation, including high support for a deemed consent model. However, specific knowledge gaps and training topics were identified that should be addressed within the context of this model., (Copyright © 2024 the College of Family Physicians of Canada.)

Background: Early-stage intrahepatic cholangiocarcinoma (ICC) is often an indication of curative-intent resection. Although patients with early-stage ICC generally have a better prognosis than individuals with advanced ICC, the incidence and risk factors of recurrence after early-stage ICC remain unclear., Methods: A multi-institutional database was used to identify patients who underwent surgery between 2000 and 2018 for ICC with pathologically confirmed stage I disease. Cox regression analysis was used to identify clinicopathological factors associated with recurrence, and an online prediction model was developed and validated., Results: Of 430 patients diagnosed with stage I ICC, approximately one-half of patients (n = 221, 51.4%) experienced recurrence after curative-intent resection. Among patients with a recurrence, most (n = 188, 85.1%) experienced it within 12 months. On multivariable analysis, carcinoembryonic antigen (hazard ratio [HR], 1.011; 95% CI, 1.004-1.018), systemic immune-inflammation index (HR, 1.036; 95% CI, 1.019-1.056), no lymph nodes evaluated (HR, 1.851; 95% CI, 1.276-2.683), and tumor size (HR, 1.101; 95% CI, 1.053-1.151) were associated with greater hazards of recurrence. A predictive model that included these weighted risk factors demonstrated excellent prognostic discrimination in the test (12-month recurrence-free survival [RFS]: low risk, 80.1%; intermediate risk, 60.3%; high risk, 37.7%; P = .001) and validation (12-month RFS: low risk, 84.5%; intermediate risk, 63.5%; high risk, 47.1%; P = .036) datasets. The online predictive model was made available at https://ktsahara.shinyapps.io/stageI&#95;icc/., Conclusions: Patients with stage I ICC without vascular invasion or lymph node metastasis had a relatively high incidence of recurrence. An online tool can risk stratify patients relative to recurrence risk to identify individuals best suited for alternative treatment approaches., Competing Interests: Declaration of competing interest The authors report no conflicts of interest., (Copyright © 2023 Society for Surgery of the Alimentary Tract. Published by Elsevier Inc. All rights reserved.)

Background: Since 2013, North American Neuroendocrine Tumor Society (NANETS) consensus-guidelines have endorsed consideration of surgical intervention for pancreatic- neuroendocrine tumors (PNET) with liver metastases., Methods: Patients with non-functional PNET with liver only metastases from 2010 to 2019 were identified from the National Cancer Database., Results: 34.7% underwent surgical intervention (13% PNET resection, 2.1% surgical management of liver metastases (SMLM), 19.5% PNET resection ​+ ​SMLM). In multivariable analysis, government insurance, year of diagnosis>2013, increasing primary tumor size were associated with lower rate of surgical intervention. Receiving treatment at an academic center (OR 3.59, 95%CI 1.81-7.11; P ​< ​0.001) or integrated cancer network (OR 3.21, 95%CI 1.57-6.54; P ​= ​0.001) was associated with a higher rate of surgical intervention. The overall rate of surgical intervention decreased from 45.7% in 2010 to 23.0% in 2019., Conclusion: Despite guideline recommendations and the suggested survival benefits, only one-third of patients underwent surgical intervention, potentially influenced by the rising utilization of systemic therapy in the past decade., Competing Interests: Declaration of competing interest All authors declare no conflicts of interest to disclose regarding the research, publication, or any other activities associated with this project. The authors have no financial, personal, or professional relationships that could be perceived as potentially influencing the integrity or impartiality of their work., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Objective: To systematically review clinical practice guidelines (CPGs) for pediatric multisystem trauma, appraise their quality, synthesize the strength of recommendations and quality of evidence, and identify knowledge gaps., Background: Traumatic injuries are the leading cause of death and disability in children, who require a specific approach to injury care. Difficulties integrating CPG recommendations may cause observed practice and outcome variation in pediatric trauma care., Methods: We conducted a systematic review using Medline, Embase, Cochrane Library, Web of Science, ClinicalTrials, and grey literature, from January 2007 to November 2022. We included CPGs targeting pediatric multisystem trauma with recommendations on any acute care diagnostic or therapeutic interventions. Pairs of reviewers independently screened articles, extracted data, and evaluated the quality of CPGs using "Appraisal of Guidelines, Research, and Evaluation II.", Results: We reviewed 19 CPGs, and 11 were considered high quality. Lack of stakeholder engagement and implementation strategies were weaknesses in guideline development. We extracted 64 recommendations: 6 (9%) on trauma readiness and patient transfer, 24 (38%) on resuscitation, 22 (34%) on diagnostic imaging, 3 (5%) on pain management, 6 (9%) on ongoing inpatient care, and 3 (5%) on patient and family support. Forty-two (66%) recommendations were strong or moderate, but only 5 (8%) were based on high-quality evidence. We did not identify recommendations on trauma survey assessment, spinal motion restriction, inpatient rehabilitation, mental health management, or discharge planning., Conclusions: We identified 5 recommendations for pediatric multisystem trauma with high-quality evidence. Organizations could improve CPGs by engaging all relevant stakeholders and considering barriers to implementation. There is a need for robust pediatric trauma research, to support recommendations., Competing Interests: The authors report no conflicts of interest., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Benchmarking is a process of continuous self-evaluation and comparison with best-in-class hospitals to guide quality improvement initiatives. We sought to define global benchmarks relative to liver resection for malignancy and to assess their achievement in hospitals in the United States., Methods: Patients who underwent curative-intent liver resection for hepatocellular carcinoma, intrahepatic cholangiocarcinoma, or colorectal or neuroendocrine liver metastases between 2000 and 2019 were identified from an international multi-institutional database. Propensity score matching was conducted to balance baseline characteristics between open and minimally invasive approaches. Best-in-class hospitals were defined relative to the achievement rate of textbook oncologic outcomes and case volume. Benchmark values were established relative to best-in-class institutions. The achievement of benchmark values among hospitals in the National Cancer Database was then assessed., Results: Among 2,624 patients treated at 20 centers, a majority underwent liver resection for hepatocellular carcinoma (n = 1,609, 61.3%), followed by colorectal liver metastases (n = 650, 24.8%), intrahepatic cholangiocarcinoma (n = 299, 11.4%), and neuroendocrine liver metastases (n = 66, 2.5%). Notably, 1,947 (74.2%) patients achieved a textbook oncologic outcome. After propensity score matching, 6 best-in-class hospitals with the highest textbook oncologic outcome rates (≥75.0%) were identified. Benchmark values were calculated for margin positivity (≤11.7%), 30-day readmission (≤4.1%), 30-day mortality (≤1.6%), minor postoperative complications (≤24.7%), severe complications (≤12.4%), and failure to achieve the textbook oncologic outcome (≤22.8%). Among the National Cancer Database hospitals, global benchmarks for margin positivity, 30-day readmission, 30-day mortality, severe complications, and textbook oncologic outcome failure were achieved in 62.9%, 27.1%, 12.1%, 7.1%, and 29.3% of centers, respectively., Conclusion: These global benchmarks may help identify hospitals that may benefit from quality improvement initiatives, aiming to improve patient safety and surgical oncologic outcomes., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Background: Lack of adherence to recommendations on pediatric orthopaedic injury care may be driven by lack of knowledge of clinical practice guidelines (CPGs), heterogeneity in recommendations or concerns about their quality. We aimed to identify CPGs for pediatric orthopaedic injury care, appraise their quality, and synthesize the quality of evidence and the strength of associated recommendations., Methods: We searched Medline, Embase, Cochrane CENTRAL, Web of Science and websites of clinical organizations. CPGs including at least one recommendation targeting pediatric orthopaedic injury populations on any diagnostic or therapeutic intervention developed in the last 15 years were eligible. Pairs of reviewers independently extracted data and evaluated CPG quality using the Appraisal of Guidelines Research and Evaluation (AGREE) II tool. We synthesized recommendations from high-quality CPGs using a recommendations matrix based on the GRADE Evidence-to-Decision framework., Results: We included 13 eligible CPGs, of which 7 were rated high quality. Lack of stakeholder involvement and applicability (i.e., implementation strategies) were identified as weaknesses. We extracted 53 recommendations of which 19 were based on moderate or high-quality evidence., Conclusions: We provide a synthesis of recommendations from high-quality CPGs that can be used by clinicians to guide treatment decisions. Future CPGs should aim to use a partnership approach with all key stakeholders and provide strategies to facilitate implementation. This study also highlights the need for more rigorous research on pediatric orthopaedic trauma., Level of Evidence: Level II-therapeutic study., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Observed variations in the management of pediatric solid organ injuries (SOIs) may be due to difficulty in finding and integrating recommendations from multiple clinical practice guidelines (CPGs) with heterogeneous methodological approaches. We aimed to systematically review CPG recommendations for pediatric SOIs., Methods: We conducted a systematic review of CPGs including at least one recommendation targeting pediatric SOI populations, using Medical Analysis and Retrieval System Online, Excerpta Medica dataBASE, Web of Science, and websites of clinical organizations. Pairs of reviewers independently assessed eligibility, extracted data, and evaluated the quality of CPGs using the Appraisal of Guidelines Research and Evaluation II tool. We synthesized recommendations from moderate to high-quality CPGs using a recommendations matrix based on Grades of Recommendation, Assessment, Development, and Evaluation criteria., Results: We identified eight CPGs, including three rated moderate or high quality. Methodological weaknesses included lack of stakeholder involvement beyond surgeons, consideration of applicability (e.g., implementation tools), and clarity around the definition of pediatric populations. Five of the 15 recommendations from moderate to high-quality CPGs were based on moderate quality evidence or were rated as strong; these reflected nonoperative management and angioembolization for renal injuries and required length of stay for liver and spleen injuries., Conclusion: We identified 15 recommendations on pediatric SOI management from 3 moderate or high-quality CPGs, but only one third were based on at least moderate-quality evidence or were rated as strong. Our results prompt the following recommendations for future CPG development or updates: (1) include all types of clinicians involved in the care of pediatric SOIs and patient and family representatives in the process, (2) develop clear definitions of the target population, and (3) provide advice and tools to promote implementation. Results also underline the urgent need for more rigorous research to support strong evidence-based recommendations in this population., Level of Evidence: Systematic Review/Meta-analysis; Level III., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Background: The high incidence of early recurrence after hepatectomy for intrahepatic cholangiocarcinoma (ICC) has a detrimental effect on overall survival (OS). Machine-learning models may improve the accuracy of outcome prediction for malignancies., Methods: Patients who underwent curative-intent hepatectomy for ICC were identified using an international database. Three machine-learning models were trained to predict early recurrence (< 12 months after hepatectomy) using 14 clinicopathologic characteristics. The area under the receiver operating curve (AUC) was used to assess their discrimination ability., Results: In this study, 536 patients were randomly assigned to training (n = 376, 70.1%) and testing (n = 160, 29.9%) cohorts. Overall, 270 (50.4%) patients experienced early recurrence (training: n = 150 [50.3%] vs testing: n = 81 [50.6%]), with a median tumor burden score (TBS) of 5.6 (training: 5.8 [interquartile range {IQR}, 4.1-8.1] vs testing: 5.5 [IQR, 3.7-7.9]) and metastatic/undetermined nodes (N1/NX) in the majority of the patients (training: n = 282 [75.0%] vs testing n = 118 [73.8%]). Among the three different machine-learning algorithms, random forest (RF) demonstrated the highest discrimination in the training/testing cohorts (RF [AUC, 0.904/0.779] vs support vector machine [AUC, 0.671/0.746] vs logistic regression [AUC, 0.668/0.745]). The five most influential variables in the final model were TBS, perineural invasion, microvascular invasion, CA 19-9 lower than 200 U/mL, and N1/NX disease. The RF model successfully stratified OS relative to the risk of early recurrence., Conclusions: Machine-learning prediction of early recurrence after ICC resection may inform tailored counseling, treatment, and recommendations. An easy-to-use calculator based on the RF model was developed and made available online., (© 2023. Society of Surgical Oncology.)

Background: Solid pseudopapillary neoplasms (SPN) are rare tumors of the pancreas, typically affecting young women. Resection is the mainstay of treatment but is associated with significant morbidity and potential mortality. We explore the idea that small, localized SPN could be safely observed., Methods: This retrospective review of the Pancreas National Cancer Database from 2004 to 2018 identified SPN via histology code 8452., Results: A total of 994 SPNs were identified. Mean age was 36.8 ± 0.5 years, 84.9% (n = 844) were female, and most had a Charlson-Deyo Comorbidity Coefficient (CDCC) of 0-1 (96.6%, n = 960). Patients were most often staged clinically as cT 2 (69.5%, n = 457) followed by cT 3 (17.6%, n = 116), cT 1 (11.2%, n = 74), and cT 4 (1.7%, n = 11). Clinical lymph node and distant metastasis rates were 3.0 and 4.0%, respectively. Surgical resection was performed in 96.6% of patients (n = 960), most commonly partial pancreatectomy (44.3%) followed by pancreatoduodenectomy (31.3%) and total pancreatectomy (8.1%). In patients clinically staged as node (N 0 ) and distant metastasis (M 0 ) negative, occult pathologic lymph node involvement was found in 0% (n = 28) of patients with stage cT 1 and 0.5% (n = 185) of patients with cT 2 disease. The risk of occult nodal metastasis significantly increased to 8.9% (n = 61) for patients with cT 3 disease. The risk further increased to 50% (n = 2) in patients with cT 4 disease., Conclusions: Herein, the specificity of excluding nodal involvement clinically is 99.5% in tumors ≤ 4 cm and 100% in tumors ≤ 2 cm. Therefore, there may be a role for close observation in patients with cT 1 N 0 lesions to mitigate morbidity from major pancreatic resection., (© 2023. Society of Surgical Oncology.)

Background: The prognostic impact of major postoperative complications (POCs) for intrahepatic cholangiocarcinoma (ICC) remains ill-defined. We sought to analyze the relationship between POCs and outcomes relative to lymph node metastases (LNM) and tumor burden score (TBS)., Methods: Patients who underwent resection of ICC between 1990-2020 were included from an international database. POCs were defined according to Clavien-Dindo classification ≥ 3. The prognostic impact of POCs was estimated relative to TBS categories (i.e., high and low) and lymph node status (i.e., N0 or N1)., Results: Among 553 patients who underwent curative-intent resection for ICC, 128 (23.1%) individuals experienced POCs. Low TBS/N0 patients who experienced POCs presented with a higher risk of recurrence and death (3-year cumulative recurrence rate; POCs: 74.8% vs. no POCs: 43.5%, p = 0.006; 5-year overall survival [OS], POCs 37.8% vs. no POCs 65.8%, p = 0.003), while POCs were not associated with worse outcomes among high TBS and/or N1 patients. The Cox regression analysis confirmed that POCs were significant predictors of poor outcomes in low TBS/N0 patients (OS, hazard ratio [HR] 2.91, 95%CI 1.45-5.82, p = 0.003; recurrence free survival [RFS], HR 2.42, 95%CI 1.28-4.56, p = 0.007). Among low TBS/N0 patients, POCs were associated with early recurrence (within 2 years) (Odds ratio [OR] 2.79 95%CI 1.13-6.93, p = 0.03) and extrahepatic recurrence (OR 3.13, 95%CI 1.14-8.54, p = 0.03), in contrast to patients with high TBS and/or nodal disease., Conclusions: POCs were independent, negative prognostic determinants for both OS and RFS among low TBS/N0 patients. Perioperative strategies that minimize the risk of POCs are critical to improving prognosis, especially among patients harboring favorable clinicopathologic features., (© 2023. The Author(s) under exclusive licence to Société Internationale de Chirurgie.)

Background: Intrahepatic cholangiocarcinoma (ICC) is associated with poor long-term outcomes, and limited evidence exists on optimal resection margin width. This study used artificial intelligence to investigate long-term outcomes and optimal margin width in hepatectomy for ICC., Methods: The study enrolled patients who underwent curative-intent resection for ICC between 1990 and 2020. The optimal survival tree (OST) was used to investigate overall (OS) and recurrence-free survival (RFS). An optimal policy tree (OPT) assigned treatment recommendations based on random forest (RF) counterfactual survival probabilities associated with each possible margin width between 0 and 20 mm., Results: Among 600 patients, the median resection margin was 4 mm (interquartile range [IQR], 2-10). Overall, 379 (63.2 %) patients experienced recurrence with a 5-year RFS of 28.3 % and a 5-year OS of 38.7 %. The OST identified five subgroups of patients with different OS rates based on tumor size, a carbohydrate antigen 19-9 [CA19-9] level higher than 200 U/mL, nodal status, margin width, and age (area under the curve [AUC]: training, 0.81; testing, 0.69). The patients with tumors smaller than 4.8 cm and a margin width of 2.5 mm or greater had a relative increase in 5-year OS of 37 % compared with the entire cohort. The OST for RFS estimated a 46 % improvement in the 5-year RFS for the patients younger than 60 years who had small (<4.8 cm) well- or moderately differentiated tumors without microvascular invasion. The OPT suggested five optimal margin widths to maximize the 5-year OS for the subgroups of patients based on age, tumor size, extent of hepatectomy, and CA19-9 levels., Conclusions: Artificial intelligence OST identified subgroups within ICC relative to long-term outcomes. Although tumor biology dictated prognosis, the OPT suggested that different margin widths based on patient and disease characteristics may optimize ICC long-term survival., (© 2023. Society of Surgical Oncology.)

Background: The therapeutic role of lymphadenectomy (LND) for intrahepatic cholangiocarcinoma (ICC) patients remains ill-defined. We sought to analyze the therapeutic value of LND relative to tumor location and preoperative lymph node metastasis (LNM) risk., Methods: Patients who underwent curative-intent hepatic resection of ICC between 1990 and 2020 were included from a multi-institutional database. Therapeutic LND (tLND) was defined as LND that harvested ≥3 lymph nodes., Results: Among 662 patients, 178 (26.9%) individuals received tLND. Patients were categorized into central type ICC (n = 156, 23.6%) and peripheral type ICC (n = 506, 76.4%). Central type harbored multiple adverse clinicopathologic factors and worse overall survival (OS) compared with peripheral type (5-year OS, central: 27.0% vs. peripheral: 47.2%, p < 0.001). After consideration of preoperative LNM risk, patients with central type and high-risk LNM who underwent tLND survived longer than individuals who did not (5-year OS, tLND: 27.9% vs. non-tLND: 9.0%, p = 0.001), whereas tLND was not associated with better survival among patients with peripheral type ICC or low-risk LNM. The therapeutic index of hepatoduodenal ligament (HDL) and other regions was higher in central type than in peripheral type, which was more pronounced among high-risk LNM patients., Conclusions: Central type ICC with high-risk LNM should undergo LND involving regions beyond the HDL., (Copyright © 2023 International Hepato-Pancreato-Biliary Association Inc. Published by Elsevier Ltd. All rights reserved.)

There is a shared global commitment to improving baseline donation and transplantation performance metrics in a manner consistent with ethics and local cultural and social factors. The law is one tool that can help improve these metrics. Although legal systems vary across jurisdictions, our objective was to create expert, consensus guidance for law and policymakers on foundational issues underlying organ and tissue donation and transplantation (OTDT) systems around the world., Methods: Using the nominal group technique, a group composed of legal academics, a transplant coordinator/clinician, and a patient partner identified topic areas and recommendations on foundational legal issues. The recommendations were informed by narrative literature reviews conducted by group members based on their areas of expertise, which yielded a range of academic articles, policy documents, and sources of law. Best practices were identified from relevant sources in each subtopic, which formed the basis of the recommendations contained herein., Results: We reached consensus on 12 recommendations grouped into 5 subtopics: (i) legal definitions and legislative scope, (ii) consent requirements for donation' (iii) allocation of organs and tissue' (iv) operation of OTDT systems' and (v) travel for transplant and organ trafficking. We have differentiated between those foundational legal principles for which there is a firm basis of support with those requiring further consideration and resolution. Seven such areas of controversy are identified and discussed alongside relevant recommendations., Conclusions: Our recommendations encompass some principles staunchly enshrined in the OTDT landscape (eg, the dead donor rule), whereas others reflect more recent developments in practice (eg, mandatory referral). Although some principles are widely accepted, there is not always consensus as to how they ought to be implemented. As the OTDT landscape continues to evolve, recommendations must be reconsidered for the law to keep pace with developments in knowledge, technology, and practice., Competing Interests: The authors have no conflicts of interest to disclose. The authors have no conflicts of interest to disclose., (Copyright © 2023 The Author(s). Transplantation Direct. Published by Wolters Kluwer Health, Inc.)

Objective: To explore the views of underserved and equity-denied communities in Nova Scotia, Canada, regarding organ and tissue donation and deemed consent legislation., Design: A qualitative descriptive study was undertaken, employing both interviews and focus groups., Setting: The province of Nova Scotia, Canada-the first jurisdiction in North America to implement deemed consent legislation for organ and tissue donation., Participants: Leaders of African Nova Scotian, Lesbian, Gay, Bisexual, Trans, Queer, Two Spirit (LGBTQ2S+) and Faith-based communities (Islam and Judaism) were invited to participate (n=11). Leaders were defined as persons responsible for community organisations or in other leadership roles, and were purposively recruited by the research team., Results: Through thematic analysis, four main themes were identified: (1) alignment with personal values as well as religious beliefs and perspectives; (2) trust and relationships, which need to be acknowledged and addressed in the context of deemed consent legislation; (3) cultural competence, which is essential to the roll-out of the new legislation and (4) communication and information to combat misconceptions and misinformation, facilitate informed decision-making, and mitigate conflict within families., Conclusions: Leaders of African Nova Scotian, LGBTQ2S+ and Faith-based communities in Nova Scotia are highly supportive of deemed consent legislation. Despite this, many issues exemplify the need for cultural competence at all levels. These findings should inform ongoing implementation of the legislation and other jurisdictions considering a deemed consent approach to organ and tissue donation., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: The present study aimed to examine the prognostic significance of margin status following hepatectomy of intrahepatic cholangiocarcinoma (ICC) relative to overall tumor burden and nodal status., Method: Patients who underwent curative-intent surgery for ICC between 1990 and 2017 were included from a multi-institutional database. The impact of margin status and width on overall survival (OS) was examined relative to TBS and preoperative nodal status., Results: Among 1105 patients with ICC who underwent resection, median tumor burden score (TBS) was 6.1 (IQR 4.2-8.8) and 218 (19.7%) patients had N1 disease. More than one in eight patients had an R1 surgical margin (n = 154, 13.9%). Among patients with low or medium TBS, an increasing margin width was associated with an incrementally improved 5-year OS (R1 31.9% vs. 1-3 mm 38.5% vs. 3-10 mm 48.0% vs. ≥ 10 mm 52.3%). In contrast, among patients with a high TBS, margin width was not associated with better survival (R1 28.9% vs. 1-3 mm 22.8% vs. 3-10 mm 29.6% vs. ≥ 10 mm 13.7%). In addition, surgical margin status did not impact survival with cutoffs of TBS 7 or greater. Furthermore, patients with low or medium TBS and preoperative negative lymph nodes derived a survival benefit from an R0 resection (R1 resection, HR 2.15, 95% CI 1.35-3.44, p = 0.001). In contrast, margin status was not associated with prognosis among patients with a high TBS and preoperative positive/suspicious lymph nodes (R1 resection, HR 1.34, 95% CI 0.58-3.11, p = 0.50)., Conclusion: R0 resection and wider margin resection resulted in improved outcomes in patients with low tumor burden; however, the survival benefit of negative margin status disappeared in patients with underlying poor tumor biology., (© 2022. Society of Surgical Oncology.)

Background: The interplay of carbohydrate antigen 19-9 (CA19-9) and tumor burden score (TBS) within intrahepatic cholangiocarcinoma remains ill-defined. We evaluated the roles of TBS and CA19-9 relative to overall survival (OS) and recurrence, as well as the predictive ability of the combined TBS and CA19-9 (CTC) grading system., Study Design: Patients undergoing liver resection for intrahepatic cholangiocarcinoma between 2000 and 2020 were identified using a multi-institutional database. The impact of CA19-9 and TBS on 5-year OS and 3-year recurrence was assessed, along with the prognostic accuracy of the CTC grading system (ie the composite score of CA19-9 level and TBS)., Results: Among 831 patients, the median age was 58.2 years and 482 (58.0%) were male. The median [IQR] CA19-9 level was 49.7 [17.0, 221.0] U/mL and TBS was 6.1 [4.1, 8.3]. Median [IQR] and 5-year OS were 36.9 [32.3, 43.1] months and 38.9%, respectively; 3-year recurrence was 68.9%. Five-year survival varied relative to CA19-9 (low vs high, 49.0% vs 19.7%) and TBS (low vs high, 53.6% vs 26.9%) (p < 0.001 for both). On multivariable analysis, high CA19-9 (hazard ratio [HR] 2.02, 95% CI 1.64 to 2.49) and high TBS (HR 1.64, 95% CI 1.32 to 2.06) remained independently associated with OS. In turn, the CTC grading score stratified 5-year OS (low vs intermediate vs high CTC, 57.7% vs 39.9% vs 12.6%; p < 0.001) and remained an independent prognostic factor (referent, low CTC; [intermediate CTC] HR 1.54, 95% CI 1.18 to 2.01; [high CTC] HR 3.28, 95% CI 2.47 to 4.36)., Conclusions: The interplay between tumor morphology and biology dictates long-term prognosis after liver resection for intrahepatic cholangiocarcinoma. Prognostic models such as the CTC grading system may inform discussions around prognosis, as well as help identify which patients with ICC may benefit more from neoadjuvant chemotherapy rather than up-front surgery., (Copyright © 2023 by the American College of Surgeons. Published by Wolters Kluwer Health, Inc. All rights reserved.)

Purpose: We aimed to describe the Canadian public's understanding and perception of how death is determined in Canada, their level of interest in learning about death and death determination, and their preferred strategies for informing the public., Methods: We conducted a nationwide cross-sectional survey of a representative sample of the Canadian public. The survey presented two scenarios of a man who met current criteria for neurologic death determination (scenario 1) and a man who met current criteria for circulatory death determination (scenario 2). Survey questions evaluated understanding of how death is determined, acceptance of death determination by neurologic and circulatory criteria, and interest and preferred strategies in learning more about the topic., Results: Among 2,000 respondents (50.8% women; n = 1,015), nearly 67.2% believed that the man in scenario 1 was dead (n = 1,344) and 81.2% (n = 1,623) believed that the man in scenario 2 was dead. Respondents who believed that the man was not dead or were unsure endorsed several factors that may increase their agreement with the determination of death, including requiring more information about how death was determined, seeing the results of brain imaging/tests, and a third doctor's opinion. Predictors of disbelief that the man in scenario 1 is dead were younger age, being uncomfortable with the topic of death, and subscribing to a religion. Predictors of disbelief that the man in scenario 2 is dead were younger age, residing in Quebec (compared with Ontario), having a high school education, and subscribing to a religion. Most respondents (63.3%) indicated interest in learning more about death and death determination. Most respondents preferred to receive information about death and death determination from their health care professional (50.9%) and written information provided by their health care professional (42.7%)., Conclusion: Among the Canadian public, the understanding of neurologic and circulatory death determination is variable. More uncertainty exists with death determination by neurologic criteria than with circulatory criteria. Nevertheless, there is a high level of general interest in learning more about how death is determined in Canada. These findings provide important opportunities for further public engagement., (© 2023. The Author(s).)