F(for the European Liver and Intestine Transplant Association (ELITA) and Eurotransplant Liver Intestine Advisory Committee (ELIAC)
for the European Liver and Intestine Transplant Association (ELITA) and Eurotransplant Liver Intestine Advisory Committee (ELIAC)
+4
Recently we validated the donor risk index (DRI) as conducted by Feng et al. for the Eurotransplant region. Although this scoring system is a valid tool for scoring donor liver quality, for allocation purposes a scoring system tailored for the Eurotransplant region may be more appropriate. Objective of our study was to investigate various donor and transplant risk factors and design a risk model for the Eurotransplant region. This study is a database analysis of all 5939 liver transplantations from deceased donors into adult recipients from the 1st of January 2003 until the 31st of December 2007 in Eurotransplant. Data were analyzed with Kaplan–Meier and Cox regression models. From 5723 patients follow-up data were available with a mean of 2.5 years. After multivariate analysis the DRI (p < 0.0001), latest lab GGT (p = 0.005) and rescue allocation (p = 0.007) remained significant. These factors were used to create the Eurotransplant Donor Risk Index (ET-DRI). Concordance-index calculation shows this ET-DRI to have high predictive value for outcome after liver transplantation. Therefore, we advise the use of this ET-DRI for risk indication and possibly for allocation purposes within the Eurotrans-plant region.
FCfor the European Liver Intestine Transplant Association and the Eurotransplant Liver Intestine Advisory Committee
for the European Liver Intestine Transplant Association and the Eurotransplant Liver Intestine Advisory Committee
+5
In Eurotransplant, more than 50% of liver allografts come from extended criteria donors (ECDs). However, not every ECD is the same. The limits of their use are being explored. A continuous scoring system for analyzing donor risk has been developed within the Organ Procurement and Transplantation Network (OPTN), the Donor Risk Index (DRI). The objective of this study was the validation of this donor risk index (DRI) in Eurotransplant. The study was a database analysis of all 5939 liver transplants involving deceased donors and adult recipients from January 1, 2003 to December 31, 2007 in Eurotransplant. Data were analyzed with Kaplan-Meier and Cox regression models. Follow-up data were available for 5723 patients with a median follow up of 2.5 years. The mean DRI was remarkably higher in the Eurotransplant region versus OPTN (1.71 versus 1.45), and this indicated different donor populations. Nevertheless, we were able to validate the DRI for the Eurotransplant region. Kaplan-Meier curves per DRI category showed a significant correlation between the DRI and outcomes (P < 0.001). A multivariate analysis demonstrated that the DRI was the most significant factor influencing outcomes (P < 0.001). Among all donor, transplant, and recipient variables, the DRI was the strongest predictor of outcomes.
11 June 2020 in American Journal of Transplantation
The MELD score is used in the Eurotransplant (ET) region to allocate liver grafts. Hyponatremia in cirrhotic patients is an important predictor of death but is not incorporated in MELD. This study investigated the performance of the MELD‐Na score for the ET region. All adult patients with chronic liver disease on the ET liver transplantation waiting list (WL) allocated through lab MELD scores were included. The MELD‐corrected effect of serum sodium (Na) concentration at listing on the 90‐day WL mortality was calculated using Cox regression. The MELD‐Na performance was assessed with c‐indices, calibration per decile and Brier scores. The reclassification from MELD to MELD‐Na score was calculated to estimate the impact of MELD‐Na‐based allocation in the ET region. For the 5223 included patients, the risk of 90‐day WL death was 2.9 times higher for hyponatremic patients. The MELD‐Na had a significantly higher c‐index of 0.847 (SE 0.007) and more accurate 90‐day mortality prediction compared to MELD (Brier score of 0.059 versus 0.061). It was estimated that using MELD‐Na would reduce WL mortality by 4.9%. The MELD‐Na score yielded improved prediction of 90‐day WL mortality in the ET region and using MELD‐Na for liver allocation will very likely reduce WL mortality.
Background. Uveal melanoma is the most common primary intraocular tumor in adults, and up to 50% of patients will develop liver metastases. Complete surgical resection of these metastases can improve 5-year survival, but only a few patients are eligible for radical surgical treatment. The aim of this study was to introduce a near-infrared (NIR) fluorescence laparoscope during minimally invasive surgery for intraoperative identification of uveal melanoma hepatic metastases and to use it to provide guidance during resection. Methods. Three patients diagnosed with one solitary liver metastasis from uveal melanoma are presented. Patients received 10 mg indocyanine green (ICG) intravenously 24 hours before surgery. A NIR fluorescence laparoscope was used to detect malignant liver lesions. Results. In all 3 patients, laparoscopic NIR fluorescence imaging using ICG successfully identified uveal melanoma metastases. In 2 patients, multiple additional lesions were identified by inspection and NIR fluorescence imaging, which were not identified by preoperative conventional imaging. In one patient, one additional lesion, not identified by computed tomography, magnetic resonance imaging, laparoscopic ultrasonography, and inspection, was observed with NIR fluorescence imaging only. Importantly, NIR fluorescence imaging provided guidance during resection of these metastases. Conclusions. We describe the successful use of laparoscopic identification and resection of uveal melanoma liver metastases using NIR fluorescence imaging and ICG. This procedure is minimally invasive and should be used as complementary to conventional techniques for the detection and resection of liver metastases.
Gallbladder cancer (GBC) is rare in Western populations and data about treatment and outcomes are scarce. This study aims to analyze survival and identify opportunities for improvement using population-based data from a low-incidence country. GBC patients diagnosed between 2005 and 2016 with GBC were identified from the Netherlands Cancer Registry. Patients were grouped according to time period (2005–2009/2010–2016) and disease stage. Trends in treatment and overall survival (OS) were analyzed. In total 1834 patients were included: 661 (36%) patients with resected, 278 (15%) with non-resected non-metastatic, and 895 (49%) with metastatic GBC. Use of radical versus simple cholecystectomy (12% vs. 26%, p < 0.001) in early (pT1b/T2) GBC increased. More patients with metastatic GBC received chemotherapy (11% vs. 29%, p < 0.001). OS improved from 4.8 months (2005–2009) to 6.1 months (2010–2016) (p = 0.012). Median OS increased over time (2005–2009 vs. 2010–2016) in resected (19.4 to 26.8 months, p = 0.038) and metastatic (2.3 vs. 3.4 months, p = 0.001) GBC but not in unresected, non-metastatic GBC. In early GBC, patients with radical cholecystectomy had a median OS of 76.7 compared to 18.4 months for simple cholecystectomy (p < 0.001). Palliative chemotherapy showed superior (p < 0.001) survival in metastatic (7.3 versus 2.1 months) and non-resected non-metastatic (7.7 versus 3.5 months) GBC. In conclusion, survival of GBC remains poor. Radical surgery and palliative chemotherapy appear to improve prognosis but remain under-utilized.
Background and Aims: The United Network for Organ Sharing’s Model for End‐Stage Liver Disease (UNOS‐MELD) score is the basis of liver allocation in the Eurotransplant region. It was constructed 20 years ago in a small US cohort and has remained unchanged ever since. The best boundaries and coefficients were never calculated for any region outside the United States. Therefore, this study refits the MELD (reMELD) for the Eurotransplant region. Approach and Results: All adult patients listed for a first liver transplantation between January 1, 2007, and December 31, 2018, were included. Data were randomly split in a training set (70%) and a validation set (30%). In the training data, generalized additive models with splines were plotted for each MELD parameter. The lower and upper bound combinations with the maximum log‐likelihood were chosen for the final models. The refit models were tested in the validation data with C‐indices and Brier scores. Through likelihood ratio tests the refit models were compared to UNOS‐MELD. The correlation between scores and survival of prioritized patients was calculated. A total of 6,684 patients were included. Based on training data, refit parameters were capped at creatinine 0.7‐2.5, bilirubin 0.3‐27, international normalized ratio 0.1‐2.6, and sodium 120‐139. ReMELD and reMELD‐Na showed C‐indices of 0.866 and 0.869, respectively. ReMELD‐Na prioritized patients with 1.6 times higher 90‐day mortality probabilities compared to UNOS‐MELD. Conclusions: Refitting MELD resulted in new lower and upper bounds for each parameter. The predictive power of reMELD‐Na was significantly higher than UNOS‐MELD. ReMELD prioritized patients with higher 90‐day mortality rates. Thus, reMELD(‐Na) should replace UNOS‐MELD for liver graft allocation in the Eurotransplant region.