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Brown AK, Carapellucci J, Oshrine B, Gomez A, Meoded A, Asante-Korang A. Diagnostic and management roles of FDG PET/CT imaging in post-transplant lympho-proliferation in pediatric heart transplantation. Clin Transplant 2023; 37:e15015. [PMID: 37237443 DOI: 10.1111/ctr.15015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND Post-transplant lymphoproliferative disorder (PTLD) is a serious complication of pediatric heart transplant (PHTx). 18F-FDG PET/CT has been used to differentiate early lympho-proliferation from more advanced PTLD. We report our experience with PET/CT in the management of PTLD following PHTx. METHODS This was a retrospective study of 100 consecutive PHTx recipients at our institution between 2004 and 2018. Patients who underwent PET/CT or conventional CT scans to evaluate for PTLD or high Epstein-Barr viral load were included. RESULTS Males, eight females. Median age at transplant was 3.5 months (IQR = 1.5-27.5). Median age at PTLD diagnosis was 13.3 years (IQR = 9.2-16.1). Median time between transplant and PTLD diagnosis was 9.5 (IQR = 4.5-15) years. Induction agents were used in 12 patients (50%): Thymoglobulin (N = 9), anti-IL2 (N = 2), and Rituximab (N = 1). Eighteen patients (75%) had PET/CT, of whom 14 had 18FDG-avid PTLD. Six had conventional CT. Nineteen patients (79.2%) had diagnostic biopsy confirmation of PTLD, and 5 (20.8%) had excisional biopsies. Two patients had Hodgkin's lymphoma; nine had monomorphic PTLD; eight had polymorphic PTLD; five were classified as other. Nine patients had monomorphic PTLD, including seven with diffuse large cell lymphoma (DLBC) and one with T cell lymphoma. The majority (16/24) had multi-site involvement at PTLD diagnosis, and PET/CT showed that 31.3% (5/16) had easily accessible subcutaneous nodes. Seventeen patients (overall survival 71%) underwent successful treatment without recurrence of PTLD. Of seven deaths (7/24, 29%), five had DLBC lymphoma, one had polymorphic PTLD and one had T-cell lymphoma. CONCLUSION PET-CT allowed simultaneous anatomical and functional assessment of PTLD lesions, while guiding biopsy. In patients with multiple lesions, PET/CT revealed the most prominent and active lesions, improving diagnostic accuracy.
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Affiliation(s)
| | - Jennifer Carapellucci
- Division of Pediatric Cardiology, Johns Hopkins All Children's Hospital, Saint Petersburg, Florida, USA
| | - Benjamin Oshrine
- Division of Oncology, Johns Hopkins All Children's Hospital, Saint Petersburg, Florida, USA
| | - Anthony Gomez
- Division of Pediatric Cardiology, Johns Hopkins All Children's Hospital, Saint Petersburg, Florida, USA
| | - Avner Meoded
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Baylor college of Medicine, Houston, Texas, USA
| | - Alfred Asante-Korang
- Division of Pediatric Cardiology, Johns Hopkins All Children's Hospital, Saint Petersburg, Florida, USA
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Current Status of Malignant Tumors after Organ Transplantation. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5852451. [PMID: 35224096 PMCID: PMC8881127 DOI: 10.1155/2022/5852451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/27/2022] [Indexed: 12/11/2022]
Abstract
Objective To analyze the diagnosis and treatment of patients with concomitant malignant tumors after organ transplantation by compiling data from organ transplantation patients. Methods By searching CNKI and PubMed databases, we made a systematic analysis of the studies of postorgan transplantation complicating malignant tumors in the last decade. Results There were 10 articles on malignant tumors after renal transplantation, 8 articles on liver transplantation, 2 articles on heart transplantation, and 1 article on lung transplantation. The incidence of malignant tumors complicating renal transplantation is 10.4% in Europe, with skin cancer and Kaposi's sarcoma being common; the incidence in the United States is 3.4%, with PTLD having the highest incidence; the incidence of malignant tumors is relatively lowest in Asia, with gastrointestinal malignancies being the main ones. The mean time to complication of malignancy after renal transplantation is 3.83 years. The incidence of concurrent malignancies after liver transplantation is 8.8% in Europe, where skin cancer and Kaposi's sarcoma are common; 5.6% in Asia, where gastrointestinal tract tumors are prevalent; and 4.5% in the United States, where gastrointestinal tract tumors, PTLD, and hematologic diseases are predominant. The mean time to complication of malignancy after liver transplantation is 4.79 years. The incidence of malignancy after heart transplantation is 6.8-10.7%. The incidence of malignancy after lung transplantation is about 10.1%. Minimization of immunosuppression or modification of immunosuppression regimens may be a key component of cancer prevention. mTOR inhibitors and phenolate (MMF) reduce the incidence of de novo malignancies in patients after solid organ transplantation. Surgical treatment improves survival in patients with early malignancies. The use of external beam radiation therapy in the treatment of hepatocellular carcinoma is limited due to the risk of radiation liver disease. Conclusions The risk of concomitant malignancy needs to be guarded for 5 years of immunosuppressive therapy after organ transplantation surgery. Adjusting the immunosuppressive treatment regimen is an effective way to reduce concurrent malignancies. Systemic chemotherapy or radiotherapy requires vigilance against the toxic effects of drug metabolism kinetics on the transplanted organ.
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[Bilateral papillary renal cell carcinoma following kidney transplantation: A case report]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2021; 53. [PMID: 34393251 PMCID: PMC8365081 DOI: 10.19723/j.issn.1671-167x.2021.04.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
With the continuous development of kidney transplantation technique, the survival time after kidney transplantation is gradually prolonged. Thus, the malignant tumor has been the important influencing factor on the long-term survival for kidney transplantation patients. Renal cell carcinoma is a relatively common tumor after kidney transplantation. Besides, clear cell renal cell carcinoma and papillary renal cell carcinoma are the relatively common pathological types for renal cell carcinoma following kidney transplantation. However, bilateral renal cell carcinoma following kidney transplantation is comparatively rare. In this article, we presented a case of bilateral papillary renal cell carcinoma, which occurred after kidney transplantation. And the diagnosis and treatment were introduced in detail. The patient was 37 years old, and he underwent kidney transplantation 13 years ago in our hospital, because of kidney failure. After kidney transplantation, he had regular medical check-up every year. In this year, his urological ultrasound results indicated bilateral renal tumors. And then, he received abdominal and pelvic computed tomography, and the result also showed bilateral renal tumors, which were likely to be malignant tumors. After adequate consultation, the patient chose surgical treatment. The patient received long-term immunosuppressive therapy, because of kidney transplantation. Considering this, the surgeon decided to choose a staging surgical treatment, in order to reduce the bad influence of one-stage surgery. Then, the patient first underwent retroperitoneal laparoscopic radical nephrectomy for right renal tumor in our hospital, and he had no complications after operation. The pathological results showed papillary renal cell carcinoma. He was discharged successfully. He underwent retroperitoneal laparoscopic radical nephrectomy for left renal tumor in our hospital one month later, and he had no complications after operation. The pathological results also showed papillary renal cell carcinoma. He was discharged successfully two days after surgery. In the 3-month follow-up, the patient was recovering well. To sum up, the incidence of bilateral renal cell carcinoma following kidney transplantation is relatively rare, and bilateral radical nephrectomy is effective and safe treatment. Above all, it is the patient's condition that determines the choice of staging surgery or simultaneous surgery.
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Wahab MA, Abdel-Khalek EE, Elshoubary M, Yassen AM, Salah T, Sultan AM, Fathy O, Elmorshedi M, Shiha U, Elsadany M, Adly R, Samy M, Shehta A. Predictive Factors of De Novo Malignancies After Living-Donor Liver Transplantation: A Single-Center Experience. Transplant Proc 2021; 53:636-644. [PMID: 33549346 DOI: 10.1016/j.transproceed.2021.01.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 11/14/2020] [Accepted: 01/08/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND De novo malignancies are a major reason of long-term mortalities after liver transplantation. However, they usually receive minimal attention from most health care specialists. The current study aims to evaluate our experience of de novo malignancies after living-donor liver transplantation (LDLT). METHODS We reviewed the data of patients who underwent LDLT at our center during the period between May 2004 and December 2018. RESULTS During the study period, 640 patients underwent LDLT. After a mean follow-up period of 41.2 ± 25.8 months, 15 patients (2.3%) with de novo malignancies were diagnosed. The most common de novo malignancies were cutaneous cancers (40%), post-transplantation lymphoproliferative disorders (13.3%), colon cancers (13.3%), and breast cancers (13.3%). Acute cellular rejection (ACR) episodes occurred in 10 patients (66.7%). Mild ACR occurred in 8 patients (53.3%), and moderate ACR occurred in 2 patients (13.3%). All patients were managed with aggressive cancer treatment. The mean survival after therapy was 40.8 ± 26.4 months. The mean overall survival after LDLT was 83.9 ± 52.9 months. Twelve patients (80%) were still alive, and 3 mortalities (20%) occurred. The 1-, 5-, and 10-year overall survival rates after LDLT were 91.7%, 91.7%, and 61.1%, respectively. On multivariate regression analysis, smoking history, operation time, and development of ACR episodes were significant predictors of de novo malignancy development. CONCLUSIONS Liver transplant recipients are at high risk for the development of de novo malignancies. Early detection and aggressive management strategies are essential to improving the recipients' survival.
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Affiliation(s)
- Mohamed Abdel Wahab
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | | | - Mohamed Elshoubary
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | - Amr Mohamed Yassen
- Department of Anesthesia and Intensive Care, College of Medicine, Mansoura University, Egypt
| | - Tarek Salah
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | - Ahmed Mohamed Sultan
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | - Omar Fathy
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | - Mohamed Elmorshedi
- Department of Anesthesia and Intensive Care, College of Medicine, Mansoura University, Egypt
| | - Usama Shiha
- Diagnostic & Interventional Radiology Department, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt
| | - Mohamed Elsadany
- Department of Hepatology, College of Medicine, Mansoura University, Egypt
| | - Reham Adly
- Department of Anesthesia and Intensive Care, College of Medicine, Mansoura University, Egypt
| | - Mohamed Samy
- Department of Anesthesia and Intensive Care, College of Medicine, Mansoura University, Egypt
| | - Ahmed Shehta
- Department of Surgery, Gastrointestinal Surgery Center, College of Medicine, Mansoura University, Egypt.
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Kidney Graft Urothelial Carcinoma: Results From a Multicentric Retrospective National Study. Urology 2019; 135:101-105. [PMID: 31560916 DOI: 10.1016/j.urology.2019.09.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/09/2019] [Accepted: 09/14/2019] [Indexed: 01/20/2023]
Abstract
OBJECTIVE To calculate the incidence of renal graft urothelial carcinoma in renal transplant recipients in a national large retrospective cohort and to analyze circumstances of diagnosis, treatment and outcome. MATERIAL AND METHODS We conducted a national retrospective, multicenter study. Thirty two transplant centers were asked to report its cases of kidney graft tumors and the number of kidney transplantations performed since the beginning of their transplantation activity. RESULTS Between January 1988 and December 2018, 56,806 patients were transplanted in the 32 centers participating in this study. Among this cohort, 107 renal graft tumors (excluding lymphoma) were diagnosed among them 11 renal transplant recipients were diagnosed with an urothelial carcinoma in the kidney graft. The calculated incidence was 0.019%. The median patient age at the time of diagnosis was 56.7 years (49.8-60.9) and 51.4 years (47-55.7) at the time of transplantation. The median time between transplantation and diagnosis was 66.6 months (14.3-97). Before treatment, 3 patients had graft tumor biopsies revealing urothelial carcinomas, 3 patients had endoscopic retrograde uretero-pyelography showing lacunary images. Two patients had a diagnostic flexible ureteroscopy with biopsies. Total nephrectomy was performed in all cases. CONCLUSION Even though occurring in the context of immune suppression, most of these tumors seemed to have a relatively good prognosis. With regards to functional outcomes histological diagnosis should always be sought for before radical treatment of these tumors. Treatment should be a transplant nephrectomy including all the ureter with a bladder cuff to ensure optimal carcinologic control.
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Teo SH, Lee KG, Lim GH, Koo SX, Ramirez ME, Chow KY, Kee T. Incidence, risk factors and outcomes of malignancies after kidney transplantation in Singapore: a 12-year experience. Singapore Med J 2018; 60:253-259. [PMID: 30311626 DOI: 10.11622/smedj.2018122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Data on malignancy after kidney transplantation (KTX) is limited in our region, leading to challenges in the care of renal allograft recipients. We aimed to examine the epidemiology, risk factors and outcomes of post-KTX patients. METHODS A retrospective cohort study was conducted of 491 patients who underwent KTX from 1 January 2000 to 31 December 2011. Data linkage analysis was done between our centre and the National Registry of Diseases Office to determine the standardised incidence ratio (SIR), standardised mortality ratio (SMR) and risk factors for malignancy after KTX. RESULTS 31 patients (61.3% male) developed malignancy during this period, and their median age at diagnosis was 50 (range 18-65) years. Median time to malignancy diagnosis was 2.6 (range 0.3-7.9) years, with cumulative incidence of 1%, 4% and 10% at one, five and ten years, respectively. The commonest malignancy type was lymphoma, followed by kidney cancer, colorectal cancer and malignancy of the male genital organs. Multivariate analysis identified cyclosporine use as an independent risk factor for malignancy. Compared to the general population, KTX recipients had higher malignancy and mortality rates after malignancy diagnosis (SIR 3.36; SMR 9.45). Survival rates for KTX recipients with malignancy versus those without malignancy were 100%, 93% and 64% versus 97%, 93% and 83% at one, five and ten years, respectively. CONCLUSION KTX was associated with higher mortality and incidence of malignancy. Newer immunosuppressive agents and induction therapies were not found to be risk factors for malignancy, possibly due to our relatively small sample size.
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Affiliation(s)
- Su Hooi Teo
- Department of Renal Medicine, Singapore General Hospital, Singapore
| | - Kian-Guan Lee
- Department of Renal Medicine, Singapore General Hospital, Singapore
| | - Gek Hsiang Lim
- National Registry of Diseases Office, Health Promotion Board, Singapore
| | - Si Xuan Koo
- NUS Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | - Khuan Yew Chow
- National Registry of Diseases Office, Health Promotion Board, Singapore
| | - Terence Kee
- Department of Renal Medicine, Singapore General Hospital, Singapore
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Polyomavirus Replication and Smoking Are Independent Risk Factors for Bladder Cancer After Renal Transplantation. Transplantation 2017; 101:1488-1494. [PMID: 27232933 DOI: 10.1097/tp.0000000000001260] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Solid organ transplant recipients are at increased risk for developing malignancies. Polyomaviruses (PV) have been historically associated with experimental tumor development and recently described in association with renourinary malignancies in transplant patients. The aim of this study was to investigate the relationship between PV replication and smoking, and the development of malignant neoplasms in kidney transplant recipients. METHODS A retrospective case-control study was conducted for PV replication in all kidney biopsies and urine cytologies performed between 1998 and 2014 from kidney transplant recipients at the University of Maryland Medical Center. Polyomavirus-positive patients (n = 943) were defined as having any of the following: a kidney biopsy with PV associated nephropathy, any urine cytology demonstrating "decoy" cells, and/or significant polyomavirus BK viremia. Polyomavirus-negative matched patients (n = 943) were defined as lacking any evidence of PV replication. The incidence of malignancy (excluding nonmelanoma skin tumors) was determined in these 1886 patients and correlated with demographic data and history of smoking. RESULTS There was a 7.9% incidence of malignant tumors after a mean posttransplant follow-up of 7.9 ± 5.4 years. Among all cancer subtypes, only bladder carcinoma was significantly associated with PV replication. By multivariate analysis, only PV replication and smoking independently increased the risk of bladder cancer, relative risk, 11.7 (P = 0.0013) and 5.6 (P = 0.0053), respectively. CONCLUSIONS The findings in the current study indicate that kidney transplant recipients with PV replication and smoking are at particular risk to develop bladder carcinomas and support the need for long-term cancer surveillance in these patients.
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Tian W, Lu J, Jiao D, Cong Z. An evaluation of the clinical diagnostic value of contrast-enhanced ultrasound combined with contrast-enhanced computed tomography in space-occupying lesions of the kidney. Onco Targets Ther 2017; 10:3493-3499. [PMID: 28761358 PMCID: PMC5522827 DOI: 10.2147/ott.s135500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND There are a variety of space-occupying lesions of the kidney, and the benign lesions may be difficult to differentiate from the malignant ones. Therefore, an accurate judgment of the benign and malignant nature of the space-occupying lesions of the kidney is of high importance for the treatment and prognosis of these patients. OBJECTIVE To evaluate the diagnostic value of contrast-enhanced ultrasound (CEUS) combined with contrast-enhanced computed tomography (CECT) in space-occupying lesions of the kidney. DATA AND METHODS Three hundred and sixty-seven patients with space-occupying lesions of the kidney (378 lesions) were examined by CEUS and CECT, respectively, then, a combined diagnosis was made after the combination of CEUS and CECT by a multidisciplinary team. The diagnoses from the three methods were compared. The pathological results were taken as the gold standard. The sensitivity, specificity, positive and negative predictive values and area under the receiver operating characteristic (ROC) curve were calculated for the three methods. Thus, the diagnostic value of the three methods was assessed. RESULTS Of the 378 lesions examined, there were 301 malignant lesions and 77 benign lesions. The combined examination revealed 303 malignant lesions, with 9 benign lesions mistakenly diagnosed as malignant ones; thus, the misdiagnosis rate was 11.7%. By using the combined examination, 75 benign lesions were diagnosed, with the missed diagnosis of 7 malignant lesions, so the missed diagnosis rate was 2.3%. The sensitivity, specificity, positive and negative predictive values and area under the ROC curve with the combined examination of CEUS and CECT were 97.67% (0.950-0.989), 88.31% (0.785-0.942), 97.03% (0.942-0.985), 90.67% (0.811-0.958) and 0.930 (0.887-0.973), respectively. As compared with either CEUS or CECT alone, the difference in these indicators was of statistical significance (P<0.05). The combined examination greatly improved the sensitivity, specificity and accuracy of the diagnosis of the space-occupying lesions of the kidney. CONCLUSION CEUS and CECT each have advantages and disadvantages in the diagnosis of the space-occupying lesions of the kidney. The two techniques can be used in combination to compensate for the respective defects. More salient benefits can be reaped from the combined examination than from either technique used alone.
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Affiliation(s)
- Wen Tian
- Department of Blood Transfusion, The Second Hospital of Jilin University
| | - Jianbo Lu
- Department of Ultrasound, Affiliated Hospital of Changchun University of Traditional Chinese Medicine
| | - Dan Jiao
- Department of Ultrasound, China-Japan Union Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Zhibin Cong
- Department of Ultrasound, Affiliated Hospital of Changchun University of Traditional Chinese Medicine
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Kusaka M, Okamoto M, Takenaka M, Sasaki H, Fukami N, Kataoka K, Ito T, Kenmochi T, Hoshinaga K, Shiroki R. Gene Expression Profiling of Peripheral Blood From Kidney Transplant Recipients for the Early Detection of Digestive System Cancer. Transplant Proc 2017; 49:1056-1060. [PMID: 28583526 DOI: 10.1016/j.transproceed.2017.03.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Kidney transplant recipients are at increased risk of developing cancer in comparison with the general population. To effectively manage post-transplantation malignancies, it is essential to proactively monitor patients. A long-term intensive screening program was associated with a reduced incidence of cancer after transplantation. This study evaluated the usefulness of the gene expression profiling of peripheral blood samples obtained from kidney transplant patients and adopted a screening test for detecting cancer of the digestive system (gastric, colon, pancreas, and biliary tract). STUDY DESIGN AND METHOD Nineteen patients were included in this study and a total of 53 gene expression screening tests were performed. The gene expression profiles of blood-delivered total RNA and whole genome human gene expression profiles were obtained. We investigated the expression levels of 2665 genes associated with digestive cancers and counted the number of genes in which expression was altered. A hierarchical clustering analysis was also performed. The final prediction of the cancer possibility was determined according to an algorithm. RESULTS The number of genes in which expression was altered was significantly increased in the kidney transplant recipients in comparison with the general population (1091 ± 63 vs 823 ± 94; P = .0024). The number of genes with altered expression decreased after the induction of mechanistic target of rapamycin (mTOR) inhibitor (1484 ± 227 vs 883 ± 154; P = .0439). No cases of possible digestive cancer were detected in this study period. CONCLUSION The gene expression profiling of peripheral blood samples may be a useful and noninvasive diagnostic tool that allows for the early detection of cancer of the digestive system.
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Affiliation(s)
- M Kusaka
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan.
| | | | - M Takenaka
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan
| | - H Sasaki
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan
| | - N Fukami
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan
| | | | - T Ito
- Department of Organ Transplant Surgery, Fujita-Health University, Toyoake, Aichi, Japan
| | - T Kenmochi
- Department of Organ Transplant Surgery, Fujita-Health University, Toyoake, Aichi, Japan
| | - K Hoshinaga
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan
| | - R Shiroki
- Department of Urology, Fujita-Health University School of Medicine, Toyoake, Aichi, Japan
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Cilião HL, Camargo-Godoy RBO, de Souza MF, Dos Reis MB, Iastrenski L, Alvares Delfino VD, Rogatto SR, de Syllos Cólus IM. Association of UGT2B7, UGT1A9, ABCG2, and IL23R polymorphisms with rejection risk in kidney transplant patients. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:661-671. [PMID: 28524801 DOI: 10.1080/15287394.2017.1286922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Despite advances in testing compatibility between donor and recipient, graft rejection remains a current concern. Single-nucleotide polymorphisms (SNPs) that codify altered enzymes of metabolism, drug transport, and the immune system may contribute to graft rejection in transplant patients. This study examined the association between SNPs present in genes of these processes and occurrence of graft rejection episodes in 246 kidney transplant patients, 35% of which were diagnosed with rejection. Genotype-gene expression associations were also assessed. Peripheral blood samples were used for genotyping of 24 SNPs on the following genes: CYP3A4, CYP3A5, CYP2E1, POR, UGT2B7, UGT1A9, ABCB1, ABCC2, ABCG2, SLCO1B1, TNF, IL2, IRF5, TGFB1, NFKBIA, IL10, IL23R, NFAT, and CCR5 by real-time PCR. The analysis of gene expression was performed by RT-qPCR. The association between graft rejection episodes and polymorphic variants was assessed using odds ratios. Polymorphisms rs7662029 (UGT2B7) and rs6714486 (UGT1A9) were associated with occurrence of graft rejection episodes, rs7662029 (UGT2B7) exhibited a protective effect (1.85-fold), and rs6714486 (UGT1A9) an increased 1.6-fold increased risk of graft rejection. Among drug transporter genes, only rs2231142 (ABCG2) demonstrated an association with a 1.92-fold decrease in the risk of graft rejection. The immunological SNP rs10889677 (IL23R) was associated with a 1.9-fold enhanced risk of graft rejection. Association between genotypes and gene expression was not detected. Therefore, SNPs of UGT2B7, UGT1A9, ABCG2, and IL23R genes may be useful as candidate markers for screening of risk graft rejection in renal transplant patients. These markers may improve medical decisions, avoiding adverse effects.
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Affiliation(s)
- Heloísa Lizotti Cilião
- a Department of General Biology, Center of Biological Sciences , State University of Londrina , Londrina , Paraná , Brazil
| | | | - Marilesia Ferreira de Souza
- a Department of General Biology, Center of Biological Sciences , State University of Londrina , Londrina , Paraná , Brazil
| | | | - Lorena Iastrenski
- a Department of General Biology, Center of Biological Sciences , State University of Londrina , Londrina , Paraná , Brazil
| | | | - Silvia Regina Rogatto
- c Faculty of Medicine , São Paulo State University (UNESP) , Botucatu , São Paulo , Brazil
| | - Ilce Mara de Syllos Cólus
- a Department of General Biology, Center of Biological Sciences , State University of Londrina , Londrina , Paraná , Brazil
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Bieniasz M, Chmura A, Kwapisz M, Czerwińska M, Kieszek R, Domagała P, Wszoła M, Serwańska-Świętek M, Górnicka B, Durlik M, Pączek L, Kwiatkowski A. Renal Tumor in Allogeneic Kidney Transplant Recipient. Transplant Proc 2017; 48:1849-54. [PMID: 27496506 DOI: 10.1016/j.transproceed.2016.01.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/21/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Malignancies will be a leading cause of mortality in renal transplant recipients in the next 20 years. Renal cell cancer (RCC) is the most common urologic cancer in kidney transplant recipients. The risk of RCC development in kidney transplant recipients is 15-100 times higher than in the general population. The purpose of the current retrospective study was to assess the frequency of nephrectomies performed because of renal tumors in the native kidneys in kidney transplant recipients in the Department of General and Transplantation Surgery at the Medical University of Warsaw between 2010 and 2014 year; the identification of kidney recipients diagnosed with RCC; and epidemiologic, clinical, and histopathological aspects associated with RCC. PATIENTS AND METHODS A total of 319 nephrectomies were performed in the Department of General and Transplantation Surgery at the Medical University of Warsaw between 2010 and 2014 year. Renal tumors were diagnosed in 25 renal transplant recipients. RESULTS Among malignant tumors, 13 cases of RCC and 1 case of post-transplant lymphoproliferative disorder (PTLD) were observed. There was no significant difference between age and duration of pretransplantation dialysis in patients with RCC and patients with benign tumors (P = .14 and P = .91, respectively). Body mass index was significantly higher in patients with RCC than in patients with benign tumors (P = .04). CONCLUSIONS Renal cell cancer is more common among male kidney recipients. There is a good Polish screening system allowing detection of kidney cancer in native kidney. We recommend performing periodic screening for kidney cancers to obtain an early diagnosis.
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Affiliation(s)
- M Bieniasz
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland.
| | - A Chmura
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Kwapisz
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Czerwińska
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - R Kieszek
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - P Domagała
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Wszoła
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Serwańska-Świętek
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - B Górnicka
- Department of Pathology, Medical University of Warsaw, Warsaw, Poland
| | - M Durlik
- Department of Transplantation Medicine and Nephrology, Medical University of Warsaw, Warsaw, Poland
| | - L Pączek
- Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
| | - A Kwiatkowski
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
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Wareham NE, Lundgren JD, Da Cunha-Bang C, Gustafsson F, Iversen M, Johannesen HH, Kjær A, Rasmussen A, Sengeløv H, Sørensen SS, Fischer BM. The clinical utility of FDG PET/CT among solid organ transplant recipients suspected of malignancy or infection. Eur J Nucl Med Mol Imaging 2017; 44:421-431. [PMID: 27838763 PMCID: PMC5281676 DOI: 10.1007/s00259-016-3564-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/28/2016] [Indexed: 12/23/2022]
Abstract
PURPOSE Solid organ transplant (SOT) recipients are at high risk of developing infections and malignancies. 18F-FDG PET/CT may enable timely detection of these diseases and help to ensure early intervention. We aimed to describe the clinical utility of FDG PET/CT in consecutive, diagnostic unresolved SOT recipients transplanted from January 2004 to May 2015. METHODS Recipients with a post-transplant FDG PET/CT performed as part of diagnostic work-up were included. Detailed chart reviews were done to extract relevant clinical information and determine the final diagnosis related to the FDG PET/CT. Based on á priori defined criteria and the final diagnosis, results from each scan were classified as true or false, and diagnostic values determined. RESULTS Among the 1,814 recipients in the cohort, 145 had an FDG PET/CT performed; 122 under the indication of diagnostically unresolved symptoms with a suspicion of malignancy or infection. The remaining (N = 23) had an FDG PET/CT to follow-up on a known disease or to stage a known malignancy. The 122 recipients underwent a total of 133 FDG PET/CT scans performed for a suspected malignancy (66 %) or an infection (34 %). Sensitivity, specificity, and positive and negative predictive values of the FDG PET/CT in diagnosing these conditions were 97, 84, 87, and 96 %, respectively. CONCLUSION FDG PET/CT is an accurate diagnostic tool for the work-up of diagnostic unresolved SOT recipients suspected of malignancy or infection. The high sensitivity and NPV underlines the potential usefulness of PET/CT for excluding malignancy or focal infections in this often complex clinical situation.
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Affiliation(s)
- Neval E Wareham
- Centre for Health and Infectious Disease Research (CHIP), Department of Infectious Diseases, Section 2100, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark.
| | - J D Lundgren
- Centre for Health and Infectious Disease Research (CHIP), Department of Infectious Diseases, Section 2100, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark
| | - C Da Cunha-Bang
- Department of Haematology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - F Gustafsson
- Department of Cardiology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - M Iversen
- Department of Cardiology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - H H Johannesen
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - A Kjær
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - A Rasmussen
- Department of Surgical Gastroenterology, Rigshospitalet, Blegdamsvek 9, 2100 Copenhagen Ø, Denmark
| | - H Sengeløv
- Department of Haematology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - S S Sørensen
- Department of Nephrology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
| | - B M Fischer
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
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13
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Takagi T, Kondo T, Okumi M, Ishida H, Tanabe K. Differences in Clinical and Pathological Features of Renal Cell Carcinoma Between Japanese Patients After Kidney Transplantation and Those on Hemodialysis. Ther Apher Dial 2017; 21:133-138. [PMID: 28185412 DOI: 10.1111/1744-9987.12509] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 10/02/2016] [Accepted: 10/11/2016] [Indexed: 01/17/2023]
Abstract
We compared the clinical features, pathological features, and prognoses of patients with renal cell carcinoma (RCC) arising in the native kidney after kidney transplantation (RCC-transplant) or on hemodialysis (RCC-HD), and analyzed predictive factors for survival at a Japanese single institution. This cohort included 42 patients in the RCC-transplant group and 467 patients in the RCC-HD group. RCC-transplant patients were younger (53 years vs. 56 years, P = 0.0358) and had less frequent symptoms (12% vs. 27%, P = 0.0344) than RCC-HD patients. Although tumor size, tumor stage, and histological subtype were not significantly different, the RCC-transplant group had less frequent multifocal occurrences and ACDK. Overall 5-year survival (RCC-transplant, 80%; RCC-hemodialysis, 76%; P = 0.3217) and 5-year cancer-specific survival (CSS; RCC-transplant, 84%; RCC-hemodialysis, 89%; P = 0.8916) were not significantly different between the two groups. Tumor stage and grade were significant predictors for CSS. Although kidney transplantation and hemodialysis were not associated with CSS, tumor stage was an independent predictor of CSS.
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Affiliation(s)
- Toshio Takagi
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Tsunenori Kondo
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayoshi Okumi
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Hideki Ishida
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kazunari Tanabe
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
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14
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Kluijfhout WP, Drake FT, Pasternak JD, Beninato T, Mitmaker EJ, Gosnell JE, Shen WT, Suh I, Freise CE, Duh QY. De novo thyroid cancer following solid organ transplantation-A 25-year experience at a high-volume institution with a review of the literature. J Surg Oncol 2017; 115:105-108. [DOI: 10.1002/jso.24495] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 07/19/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Wouter P. Kluijfhout
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
- Department of Surgery; University Medical Center Utrecht; Utrecht The Netherlands
| | - Frederick T. Drake
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
| | - Jesse D. Pasternak
- Division of General Surgery; University Health Network Toronto; Toronto Canada
| | - Toni Beninato
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
| | | | - Jessica E. Gosnell
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
| | - Wen T. Shen
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
| | - Insoo Suh
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
| | - Chris E. Freise
- Division of Transplant Surgery; University California San Francisco; San Francisco California
| | - Quan-Yang Duh
- Section of Endocrine Surgery; University California San Francisco; San Francisco California
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15
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EXP CLIN TRANSPLANTExp Clin Transplant 2016; 14. [DOI: 10.6002/ect.tondtdtd2016.p36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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16
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Engberg H, Wehberg S, Bistrup C, Heaf J, Sørensen SS, Thiesson HC, Hansen JM, Svensson M, Green A, Marckmann P. Cancer risk and mortality after kidney transplantation: a population-based study on differences between Danish centres using standard immunosuppression with and without glucocorticoids. Nephrol Dial Transplant 2016; 31:2149-2156. [DOI: 10.1093/ndt/gfw304] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 07/03/2016] [Indexed: 12/14/2022] Open
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17
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Dridi I, Grissa I, Ezzi L, Chakroun S, Ben-Cherif W, Haouas Z, Aouam K, Ben-Attia M, Reinberg A, Boughattas NA. Circadian variation of cytotoxicity and genotoxicity induced by an immunosuppressive agent "Mycophenolate Mofetil" in rats. Chronobiol Int 2016; 33:1208-1221. [PMID: 27484793 DOI: 10.1080/07420528.2016.1211139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Immunosuppressive drugs such as Mycophenolate Mofetil (MMF) are used to suppress the immune system activity in transplant patients and reduce the risk of organ rejection. The present study investigates whether the potential cytotoxicity and genotoxicity varied according to MMF dosing-time in Wistar Rat. A potentially toxic MMF dose (300 mg/kg) was acutely administered by the i.p. route in rats at four different circadian stages (1, 7, 13 and 19 hours after light onset, HALO). Rats were sacrificed 3 days following injection, blood and bone marrow were removed for determination of cytotoxicity and genotoxicity analysis. The genotoxic effect of this pro-drug was investigated using the comet assay and the micronucleus test. Hematological changes were also evaluated according to circadian dosing time. MMF treatment induced a significant decrease at 7 HALO in red blood cells, in the hemoglobin rate and in white blood cells. These parameters followed a circadian rhythm in controls or in treated rats with an acrophase located at the end of the light-rest phase. A significant, thrombocytopenia was observed according to MMF circadian dosing time. Furthermore, abnormally shaped red cells, sometimes containing micronuclei, poikilocytotic in red cells and hypersegmented neutrophil nuclei were observed with MMF treatment. The micronucleus test revealed damage to chromosomes in rat bone marrow; the comet assay showed significant DNA damage. This damage varied according to circadian MMF dosing time. The injection of MMF in the middle of the dark-activity phase produced a very mild hematological toxicity and low genotoxicity. Conversely, it induced maximum hematological toxicity and genotoxicity when the administration occurred in the middle of the light-rest phase, which is physiologically analogous to the end of the activity of the diurnal phase in human patients.
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Affiliation(s)
- Ichrak Dridi
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Intissar Grissa
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Lobna Ezzi
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Sana Chakroun
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Wafa Ben-Cherif
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Zohra Haouas
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Karim Aouam
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Mossadok Ben-Attia
- c Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte , Carthage University , Tunis , Tunisia
| | - Alain Reinberg
- d Unit of Chronobiology , Foundation A. de Rothschild , Paris Cedex , France
| | - Naceur A Boughattas
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
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18
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Cena T, Musetti C, Quaglia M, Magnani C, Stratta P, Bagnardi V, Cantaluppi V. De novononcutaneous malignancies after kidney transplantation are associated with an increased risk of graft failure: results from a time-dependent analysis on 672 patients. Transpl Int 2016; 29:1085-93. [DOI: 10.1111/tri.12813] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/14/2016] [Accepted: 06/14/2016] [Indexed: 01/20/2023]
Affiliation(s)
- Tiziana Cena
- Unit of Medical Statistics and Cancer Epidemiology; Center of Oncological Prevention (CPO) Piemonte; University of Eastern Piedmont; Novara Italy
| | - Claudio Musetti
- Nephrology and Kidney Transplant Unit; Department of Translational Medicine; University of Eastern Piedmont; Novara Italy
| | - Marco Quaglia
- Nephrology and Kidney Transplant Unit; Department of Translational Medicine; University of Eastern Piedmont; Novara Italy
| | - Corrado Magnani
- Unit of Medical Statistics and Cancer Epidemiology; Center of Oncological Prevention (CPO) Piemonte; University of Eastern Piedmont; Novara Italy
| | - Piero Stratta
- Nephrology and Kidney Transplant Unit; Department of Translational Medicine; University of Eastern Piedmont; Novara Italy
| | - Vincenzo Bagnardi
- Department of Statistics and Quantitative Methods; University of Milan-Bicocca; Milan Italy
| | - Vincenzo Cantaluppi
- Nephrology and Kidney Transplant Unit; Department of Translational Medicine; University of Eastern Piedmont; Novara Italy
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19
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Schrem H, Schneider V, Kurok M, Goldis A, Dreier M, Kaltenborn A, Gwinner W, Barthold M, Liebeneiner J, Winny M, Klempnauer J, Kleine M. Independent Pre-Transplant Recipient Cancer Risk Factors after Kidney Transplantation and the Utility of G-Chart Analysis for Clinical Process Control. PLoS One 2016; 11:e0158732. [PMID: 27398803 PMCID: PMC4939933 DOI: 10.1371/journal.pone.0158732] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/21/2016] [Indexed: 12/20/2022] Open
Abstract
Background The aim of this study is to identify independent pre-transplant cancer risk factors after kidney transplantation and to assess the utility of G-chart analysis for clinical process control. This may contribute to the improvement of cancer surveillance processes in individual transplant centers. Patients and Methods 1655 patients after kidney transplantation at our institution with a total of 9,425 person-years of follow-up were compared retrospectively to the general German population using site-specific standardized-incidence-ratios (SIRs) of observed malignancies. Risk-adjusted multivariable Cox regression was used to identify independent pre-transplant cancer risk factors. G-chart analysis was applied to determine relevant differences in the frequency of cancer occurrences. Results Cancer incidence rates were almost three times higher as compared to the matched general population (SIR = 2.75; 95%-CI: 2.33–3.21). Significantly increased SIRs were observed for renal cell carcinoma (SIR = 22.46), post-transplant lymphoproliferative disorder (SIR = 8.36), prostate cancer (SIR = 2.22), bladder cancer (SIR = 3.24), thyroid cancer (SIR = 10.13) and melanoma (SIR = 3.08). Independent pre-transplant risk factors for cancer-free survival were age <52.3 years (p = 0.007, Hazard ratio (HR): 0.82), age >62.6 years (p = 0.001, HR: 1.29), polycystic kidney disease other than autosomal dominant polycystic kidney disease (ADPKD) (p = 0.001, HR: 0.68), high body mass index in kg/m2 (p<0.001, HR: 1.04), ADPKD (p = 0.008, HR: 1.26) and diabetic nephropathy (p = 0.004, HR = 1.51). G-chart analysis identified relevant changes in the detection rates of cancer during aftercare with no significant relation to identified risk factors for cancer-free survival (p<0.05). Conclusions Risk-adapted cancer surveillance combined with prospective G-chart analysis likely improves cancer surveillance schemes by adapting processes to identified risk factors and by using G-chart alarm signals to trigger Kaizen events and audits for root-cause analysis of relevant detection rate changes. Further, comparative G-chart analysis would enable benchmarking of cancer surveillance processes between centers.
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Affiliation(s)
- Harald Schrem
- General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
- * E-mail:
| | - Valentin Schneider
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Marlene Kurok
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
- Gynecology and Obstetrics, KRH Klinikum Nordstadt, Hannover, Germany
| | - Alon Goldis
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
- Lean Six Sigma Black Belt, Amstelveen, The Netherlands
| | - Maren Dreier
- Institute of Epidemiology, Social Medicine and Health Systems Research, Hannover Medical School, Hannover, Germany
| | - Alexander Kaltenborn
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
- Trauma and Orthopedic Surgery, Federal Armed Forces Hospital Westerstede, Medical Service of the Federal Armed Forces, Westerstede, Germany
| | | | - Marc Barthold
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Jan Liebeneiner
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Markus Winny
- General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jürgen Klempnauer
- General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Moritz Kleine
- General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- Core Facility Quality Management & Health Technology Assessment in Transplantation, Integrated Research and Treatment Center Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
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20
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Lizotti Cilião H, Batista de Oliveira Camargo-Godoy R, Mazzaron Barcelos GR, Zanuto A, Daher Alvares Delfino V, de Syllos Cólus IM. Long-term genotoxic effects of immunosuppressive drugs on lymphocytes of kidney transplant recipients. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2016; 806:47-52. [PMID: 27476335 DOI: 10.1016/j.mrgentox.2016.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/15/2016] [Accepted: 07/01/2016] [Indexed: 12/11/2022]
Abstract
Immunosuppressive therapy can prevent rejection after organ transplantation. However, increased cancer risk is a serious complication among patients undergoing such therapy. We have evaluated whether prolonged use of immunosuppressive drugs is genotoxic. DNA instability was assessed, using the comet and micronucleus assays, in blood lymphocytes of 76 kidney transplant patients. DNA damage detected by the comet assay increased with time after transplantation. The estimated glomerular filtration rate of the patients did not influence the incidence of DNA damage. No association between micronucleated mononucleated cells and time elapsed after transplantation was observed. Our results suggest that prolonged use of immunosuppressive drugs in kidney transplant patients can induce genetic instability.
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Affiliation(s)
- Heloísa Lizotti Cilião
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil.
| | | | - Gustavo Rafael Mazzaron Barcelos
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Amanda Zanuto
- Center of Health Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | | | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
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21
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Abstract
Immunosuppression use for prevention of allograft recognition/rejection has evolved to reflect an expanded understanding of the immune system, as well as a fine tuning of the goals of therapy. Immunosuppression in organ transplantation represents a balance between the desire to improve the health status of an individual affected by chronic conditions versus not imposing an unintended immunodeficiency leading to iatrogenic morbidity/mortality. This article discusses the selection and general dosing of immunosuppression in organ allograft recipients to allow providers to be comfortable in monitoring immunosuppressive therapy long term and the associated, expected posttransplant complications in allograft recipients.
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Affiliation(s)
- Gregory Malat
- Solid Organ Transplantation, Hahnemann University Hospital, Drexel University College of Medicine, 216 North Broad Street, MS 417, 5th Floor Feinstein Building, Philadelphia, PA 19102, USA.
| | - Christine Culkin
- Solid Organ Transplantation, Hahnemann University Hospital, Philadelphia, PA, USA
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22
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Yang RL, Kurian AW, Winton LM, Weill D, Patel K, Kingham K, Wapnir IL. Addressing inherited predisposition for breast cancer in transplant recipients. J Surg Oncol 2016; 113:605-8. [PMID: 26861253 DOI: 10.1002/jso.24193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 01/23/2016] [Indexed: 11/06/2022]
Abstract
Consideration of prophylactic mastectomy surgery following transplantation requires complex medical decision-making, and bias against elective surgery exists because of concern for post-operative complications. Prevention of cancer in transplant recipients is of utmost importance, given the risks of treating malignancy in an immunosuppressed patient. We present a patient case and review of the literature to support a thorough pre-transplantation evaluation of family history and consideration of prophylactic interventions to safeguard the quality of life of transplant recipients. J. Surg. Oncol. 2016;113:605-608. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Rachel L Yang
- Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - Allison W Kurian
- Department of Medicine, Stanford University School of Medicine, Stanford, California.,Department of Health Research and Policy, Stanford University School of Medicine, Stanford, California
| | - Lisa M Winton
- Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - David Weill
- Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Kapilkumar Patel
- Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Kerry Kingham
- Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Irene L Wapnir
- Department of Surgery, Stanford University School of Medicine, Stanford, California
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23
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Olsburgh J, Zakri RH, Horsfield C, Collins R, Fairweather J, O'Donnell P, Koffman G. TCC in Transplant Ureter--When and When Not to Preserve the Transplant Kidney. Am J Transplant 2016; 16:704-11. [PMID: 26731492 DOI: 10.1111/ajt.13533] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 07/27/2015] [Accepted: 07/27/2015] [Indexed: 01/25/2023]
Abstract
We present four cases of transitional cell carcinoma of the transplant ureter (TCCtu). In three cases, localized tumor resection and a variety of reconstructive techniques were possible. Transplant nephrectomy with cystectomy was performed as a secondary treatment in one locally excised case. Transplant nephroureterectomy was performed as primary treatment in one case. The role of oncogenic viruses and genetic fingerprinting to determine the origin of TCCtu are described. Our cases and a systematic literature review illustrate the surgical, nephrological, and oncological challenges of this uncommon but important condition.
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Affiliation(s)
- J Olsburgh
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - R H Zakri
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - C Horsfield
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - R Collins
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - J Fairweather
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - P O'Donnell
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
| | - G Koffman
- Department of Renal Transplantation and Pathology, Guy's Hospital, London, United Kingdom
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24
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Kato T, Kakuta Y, Abe T, Yamanaka K, Imamura R, Okumi M, Ichimaru N, Takahara S, Nonomura N. The benefits of cancer screening in kidney transplant recipients: a single-center experience. Cancer Med 2015; 5:153-8. [PMID: 26686199 PMCID: PMC4735786 DOI: 10.1002/cam4.568] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 09/22/2015] [Accepted: 09/23/2015] [Indexed: 12/19/2022] Open
Abstract
The frequency of malignancy is increasing in kidney transplant recipients. Posttransplant malignancy (PTM) is a major cause of long-term graft survival inhibition. In this study, we evaluated the frequency and prognosis of PTM at our center and examined the efficacy of cancer screening. Between 1972 and 2013, 750 patients were followed-up at our center. Annual physical examinations and screenings were performed to detect PTM. We investigated the detail of two distinctive cancer groups: screening-detected cancers and symptom-detected cancers. Seventy-seven PTM were identified during the follow-up period. The mean age at the initial PTM detection was 43.6 ± 12.8 years. The mean interval from transplantation to cancer diagnosis was 134.5 ± 11.3 months. Among the 77 patients, posttransplant lymphoproliferative disease (PTLD) was the most common cancer (19.5%, 15/77), followed by renal cell carcinoma (15.6%, 12/77). Of the cancer cases, 46.8% (36/77) were detected via screening. The most frequently screening-detected cancer was renal cell carcinoma of the native kidney and breast cancer (22.2%, 8/36). However, it was difficult to detect PTLD, urothelial carcinoma, and colorectal cancer via screening. Interestingly, Cox proportional regression analyses revealed nonscreened recipients to be a significant prognostic factor for PTM (P < 0.001). This study is the first to report that appropriate screening tests play a key role in early PTM diagnosis and lead to reduce the mortality rate in kidney transplant recipients. These findings support the provision of long-term appropriate screening for kidney transplant recipients.
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Affiliation(s)
- Taigo Kato
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoichi Kakuta
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Toyofumi Abe
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kazuaki Yamanaka
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Ryoichi Imamura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masayoshi Okumi
- Department of Urology, Tokyo Women's Medical University Graduate School of Medicine, Shinjyuku, Japan
| | - Naotsugu Ichimaru
- Advanced Technology for Transplantation, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shiro Takahara
- Advanced Technology for Transplantation, Osaka University Graduate School of Medicine, Suita, Japan
| | - Norio Nonomura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
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25
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Giessing M. [Urological follow-up and development of cancer after renal transplantation]. Urologe A 2015; 54:1393-401. [PMID: 26459582 DOI: 10.1007/s00120-015-3910-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The number of renal transplant recipients is rising, as well as graft and recipient survival. The mainstay of urological follow-up is to ensure urine transport and voiding function; also, the diagnosis and treatment of urological malignancies following renal transplantats is growing in importance. As urological malignancies are one of the three most common tumors following renal transplantation (RT), meticulous and regular urological evaluation is a central part of follow-up care after RT. RECOMMENDATIONS Urological evaluation following RT must ensure correct urine transport and voiding function. Transplant ureter strictures, relevant ureteral reflux and voiding dysfuntion (e.g., neurologic dysfunction, benign prostate hypeplasia) must be excluded or treated. Urinary tract infection (UTI), which can be life threatening in the immunosuppressed transplant recipient, must be diagnosed and treated consequently and for an adequate period of time. Prophylaxis of UTIs is indicated in patients with recurrent symptomatic UTI as well as in the initial 6 months following renal transplantation. Asymptomatic bacteriuria must not necessarily be treated. The incidence of urological malignancies like renal cell carcinoma, urothelial cancer of the bladder, and penile carcinoma is increased following RT, while the incidence of prostate and testis cancer is the same as in the nontransplant population. Surgical and nonsurgical treatment options do not differ from the normal population. Adaptation, cessation, or switching of the immunosuppressive regimen in case of urologic malignancy must be decided on the individual recipient basis.
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Affiliation(s)
- M Giessing
- Universitätsklinik für Urologie, Heinrich Heine-Universitätsklinikum Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Deutschland.
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De Novo Solid Tumors After Kidney Transplantation: Is It Time for a Patient-Tailored Risk Assessment? Experience From a Single Center. Transplant Proc 2015; 47:2116-20. [DOI: 10.1016/j.transproceed.2015.01.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/09/2015] [Accepted: 01/28/2015] [Indexed: 11/19/2022]
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EXP CLIN TRANSPLANTExp Clin Transplant 2015; 13. [DOI: 10.6002/ect.2014.0297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hope CM, Coates PTH, Carroll RP. Immune profiling and cancer post transplantation. World J Nephrol 2015; 4:41-56. [PMID: 25664246 PMCID: PMC4317627 DOI: 10.5527/wjn.v4.i1.41] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 11/03/2014] [Accepted: 11/07/2014] [Indexed: 02/06/2023] Open
Abstract
Half of all long-term (> 10 year) australian kidney transplant recipients (KTR) will develop squamous cell carcinoma (SCC) or solid organ cancer (SOC), making cancer the leading cause of death with a functioning graft. At least 30% of KTR with a history of SCC or SOC will develop a subsequent SCC or SOC lesion. Pharmacological immunosuppression is a major contributor of the increased risk of cancer for KTR, with the cancer lesions themselves further adding to systemic immunosuppression and could explain, in part, these phenomena. Immune profiling includes; measuring immunosuppressive drug levels and pharmacokinetics, enumerating leucocytes and leucocyte subsets as well as testing leucocyte function in either an antigen specific or non-specific manner. Outputs can vary from assay to assay according to methods used. In this review we define the rationale behind post-transplant immune monitoring assays and focus on assays that associate and/or have the ability to predict cancer and rejection in the KTR. We find that immune monitoring can identify those KTR of developing multiple SCC lesions and provide evidence they may benefit from pharmacological immunosuppressive drug dose reductions. In these KTR risk of rejection needs to be assessed to determine if reduction of immunosuppression will not harm the graft.
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Cilião HL, Ribeiro DL, Camargo-Godoy RBO, Specian AFL, Serpeloni JM, Cólus IMS. Cytotoxic and genotoxic effects of high concentrations of the immunosuppressive drugs cyclosporine and tacrolimus in MRC-5 cells. ACTA ACUST UNITED AC 2014; 67:179-87. [PMID: 25541063 DOI: 10.1016/j.etp.2014.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/30/2014] [Accepted: 11/19/2014] [Indexed: 11/28/2022]
Abstract
Immunosuppressive drugs are used to suppress immune system activity in transplant patients and reduce the risk of organ rejection. The present study evaluated the potential cytotoxic, genotoxic and mutagenic of the immunosuppressive drugs cyclosporine (CsA) and tacrolimus (FK-506) on normal human fibroblasts (MRC-5 cells). Based on plasma concentrations of the immunosuppressive drugs, which were obtained from the records of kidney transplant patients at the Kidney Institute of Londrina, Brazil, 11 concentrations of each immunosuppressive were chosen to evaluate cell viability using the MTT assay. From these results, CsA and FK-506 concentrations of 135, 300, 675, and 1520 ng/ml and 8, 16, 24, and 32 ng/ml, respectively, were evaluated using (i) the comet assay, (ii) the nuclear division index (NDI), (iii) the micronucleus test (CBMN) and (iv) cell proliferation curves generated by quantifying cell numbers and protein levels. In this study, 1520 to 3420 ng/ml CsA decreased cell viability after 48 h of exposure. Genotoxic effects were observed only with a concentration of 1520 ng/ml after 3h of exposure and with concentrations of 675 and 1520 ng/ml after 24h of exposure. Mutagenic effects were observed only for the concentration of 1520 ng/ml. FK-506 decreased cell viability after 72 h of exposure for concentrations up to 20 ng/ml; genotoxic effects were observed with concentrations up to 8 ng/ml for both treatment times (3 and 24h) and mutagenic effects were observed with concentrations of 24 and 32 ng/ml after 24h of treatment. The cell proliferation curves demonstrated the absence of cytostatic effects of these drugs, and these data were confirmed by the NDI analysis. Our results suggest that concentrations lower than 300 ng/ml of CsA and 16 ng/ml of FK-506 are safe for use, as they did not induce genotoxic and mutagenic damage or affect MRC-5 cell viability and proliferation.
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Affiliation(s)
- H L Cilião
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970 Londrina, PR, Brazil.
| | - D L Ribeiro
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970 Londrina, PR, Brazil
| | - R B O Camargo-Godoy
- Center of Health Science, State University of Londrina, Londrina, PR, Brazil
| | - A F L Specian
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970 Londrina, PR, Brazil
| | - J M Serpeloni
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University "Júlio de Mesquita Filho", Rodovia Araraquara-Jaú, Km 1, 14801-902 Araraquara, SP, Brazil
| | - I M S Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid, km 380, 86057-970 Londrina, PR, Brazil
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BK virus-associated urothelial carcinoma of a ureter graft in a renal transplant recipient: a case report. Transplant Proc 2014; 46:616-9. [PMID: 24656027 DOI: 10.1016/j.transproceed.2013.09.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/20/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND Urothelial carcinomas of ureter grafts in renal transplant patients are rare. Here we report our experience with a case of BK virus-associated urothelial carcinoma in a ureter graft. CASE REPORT A 47-year-old man developed chronic renal failure secondary to diabetes mellitus and started maintenance hemodialysis in September 2007. Two months later, the patient received a renal transplant from his 70-year-old mother. The patient developed BK virus-associated nephropathy 1 year after transplantation and presented with a decline in renal function and hydronephrosis in the transplanted kidney 4 years 6 months after transplantation. Cystoscopy and retrograde pyelography revealed an irregular filling defect in the ureter graft. Cytologic diagnosis of his urine revealed a high-grade urothelial carcinoma. Computerized tomography showed a cT2 ureteral tumor and no involvement of other organs. The patient subsequently underwent a transplant nephroureterectomy with bladder cuff resection. Histopathologic findings revealed a high-grade urothelial carcinoma, pT2, in the ureter graft with SV40-positive staining. The patient was closely observed without adjuvant chemotherapy therapy and remained disease free 1 year after surgery. Renal transplant recipients with BK virus infection are at high risk of developing urologic malignancies. Close attention is necessary to diagnose post-transplantation urologica malignancies as early as possible.
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Camacho JC, Moreno CC, Harri PA, Aguirre DA, Torres WE, Mittal PK. Posttransplantation lymphoproliferative disease: proposed imaging classification. Radiographics 2014; 34:2025-38. [PMID: 25384299 DOI: 10.1148/rg.347130130] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Posttransplantation lymphoproliferative disease (PTLD) is the second most common tumor in adult transplant recipients. Most cases of PTLD are attributed to Epstein-Barr virus. Decreased levels of immunosurveillance against this tumor virus as a result of immunosuppressive regimens are thought to account for most cases of PTLD. Histologically, PTLD ranges from relatively benign lymphoid hyperplasia to poorly differentiated lymphoma, and tissue sampling is required to establish the subtype. The frequency of PTLD varies depending on the type of allograft and immunosuppressive regimen. PTLD has a bimodal manifestation, with most cases occurring within the first year after transplantation and a second peak occurring 4-5 years after transplantation. Patients are often asymptomatic or present with nonspecific symptoms, and a mass visible at imaging may be the first clue to the diagnosis. Imaging plays an important role in identifying the presence of disease, guiding tissue sampling, and evaluating response to treatment. The appearance of PTLD at imaging can vary. It may be nodal or extranodal. Extranodal disease may involve the gastrointestinal tract, solid organs, or central nervous system. Solid organ lesions may be solitary or multiple, infiltrate beyond the organ margins, and obstruct organ outflow. Suggestive imaging findings should prompt tissue sampling, because knowledge of the PTLD subtype is imperative for appropriate treatment. Treatment options include reducing immunosuppression, chemotherapy, radiation therapy, and surgical resection of isolated lesions.
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Affiliation(s)
- Juan C Camacho
- From the Abdominal Imaging Division, Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1365 Clifton Rd NE, Suite AT-627, Atlanta, GA 30322 (J.C.C., C.C.M., P.A.H., W.E.T., P.K.M.); and Abdominal Imaging Division, Department of Imaging, Fundación Santa Fe de Bogotá University Hospital, Bogotá, Colombia (D.A.A.)
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First Case Report of Acute Myeloid Sarcoma Post Renal Transplant. Transplant Proc 2014; 46:2411-3. [DOI: 10.1016/j.transproceed.2014.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 02/06/2014] [Indexed: 01/26/2023]
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Klintmalm GB, Saab S, Hong JC, Nashan B. The role of mammalian target of rapamycin inhibitors in the management of post-transplant malignancy. Clin Transplant 2014; 28:635-48. [PMID: 24628264 DOI: 10.1111/ctr.12357] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2014] [Indexed: 01/04/2023]
Abstract
Post-transplant malignancies, which occur either de novo or as cancer recurrences, are due to chronic exposure to immunosuppressive agents and are often more aggressive than those that develop in the non-transplant setting. Mammalian target of rapamycin (mTOR) inhibitors have antitumor and immunosuppressive effects. The dual effects of this class of agents may provide adequate immunosuppression to prevent organ rejection while simultaneously reducing the risk of post-transplant malignancy. mTOR inhibitors have become established approved agents for treating renal cell carcinoma and other cancers and, as reviewed herein, accumulating experience among organ transplant recipients collectively points toward a potential to prevent the development of de novo malignancies of various types in the post-transplant period. To date, most research efforts surrounding mTOR inhibitors and cancer control in the transplant population have been in the area of skin cancer prevention, but there have also been interesting observations regarding regression of post-transplant Kaposi's sarcoma and post-transplantation lymphoproliferative disorder that warrant further study.
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Affiliation(s)
- Goran B Klintmalm
- Department of Transplant Surgery, Baylor University Medical Center at Dallas, Dallas, TX, USA
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