Renal Transplant Recipients Research Articles

The Efficacy and Safety of Roxadustat for the Treatment of Posttransplantation Anemia: A Randomized Study

IntroductionRoxadustat, an oral hypoxia-inducible factor prolyl hydroxylase inhibitor, can stimulate erythropoiesis. Our objective was to evaluate the efficacy and safety of roxadustat for the treatment of post-transplantation anemia (PTA). MethodsA total of 150 adult renal transplant recipients who underwent PTA were randomized to either the experimental group or the control group. During the 12-week randomized phase, the experimental group was randomized to oral iron and roxadustat treatment, and the control group was randomized to oral iron treatment only. The randomized phase was followed by a 12-week extended treatment period in which all participants were prescribed roxadustat treatment according to hemoglobin (Hb) levels. All the participants were followed up every 4 weeks. The primary endpoints were the change in Hb levels and response rate throughout the randomized period. ResultsA total of 128 participants completed the randomized treatment period (90 in the experimental group and 38 in the control group). The mean Hb concentration at week 12 was 12.20 g/dL in the experimental group and 11.19 g/dL in the control group. A significantly higher proportion of participants who achieved Hb responses were in the experimental group than in the control group. Differences in serum iron, total iron-binding capacity (TIBC) and transferrin from baseline to week 8-12 were significant between the two groups. The adverse event profiles were comparable between the two groups. ConclusionsRoxadustat increased Hb in adult renal transplant recipients who underwent PTA, with an adverse event profile comparable to that of the control group.

A prospective observational cohort study of covid-19 epidemiology and vaccine seroconversion in South Western Sydney, Australia, during the 2021–2022 pandemic period.

BackgroundIt is known that COVID-19 disproportionally adversely affects the immunocompromised, including kidney transplant recipients (KTR), as compared to the general population. Risk factors for adverse outcomes and vaccine seroconversion patterns are not fully understood. Australia was uniquely positioned to reduce initial case numbers during the 2021–2022 pandemic period due to its relative isolation and several significant public health interventions. South-Western Sydney Local Heath District was one of the predominant regions affected.MethodsA single centre, prospective cohort study of prevalent renal transplant recipients was conducted between 25th July 2021 and 1st May 2022. Baseline characteristics, COVID-19 vaccination status, COVID-19 diagnosis and outcomes were determined from the electronic medical record, Australian vaccination register and Australian and New Zealand Dialysis and Transplant Registry. Assessment of vaccine-induced seroconversion was assessed with ELISA in a subpopulation. Analysis was performed using SPSS v.28.ResultsWe identified 444 prevalent transplant recipients (60% male, 50% diabetic, median age 58 years (Interquartile range (IQR)21.0) and eGFR 56 ml/min/1.73m2 (IQR 21.9). COVID-19 was identified in 32% (n = 142) of patients, of which 38% (n = 54) required hospitalisation and 7% (n = 10) died. At least one COVID-19 vaccination was received by 95% (n = 423) with 17 (4%) patients remaining unvaccinated throughout the study period. Seroconversion after 2 and 3 doses of vaccine was 22% and 48% respectively. Increased COVID-19 related deaths were associated with older age (aOR 1.1, 95% CI 1.004–1.192, p = 0.040), smoking exposure (aOR 8.2, 05% CI 1.020-65.649, p = 0.048) and respiratory disease (aOR 14.2, 95%CI:1.825–110.930, p = 0.011) on multi-variable regression analysis. Receipt of three doses of vaccination was protective against acquiring COVID-19 (aOR 0.48, 95% CI 0.287–0.796, p = 0.005) and death (aOR 0.6, 95% CI: 0.007–0.523, p = 0.011), but not against hospitalisation (p = 0.32). Seroconversion was protective for acquiring COVID-19 on multi-variable regression independent of vaccination dose (aOR 0.1, 95%CI: 0.0025–0.523, p = 0.011).ConclusionsCOVID-19 was associated with a high mortality rate. Older age, respiratory disease and prior smoking exposure may be risk factors for increased mortality. Vaccination of 3 doses is protective against acquiring COVID-19 and death, however not hospitalisation. Antibody response is protective for acquiring COVID-19, however seroconversion rates are low.

Urinary Biomarkers for Cell Cycle Arrest TIMP-2 and IGFBP7 for Prediction of Graft Function Recovery after Kidney Transplantation.

TIMP-2 and IGFBP7 have been identified and validated for the early detection of renal injury in critically ill patients, but data on recovery of allograft function after kidney transplantation (KTx) are scarce. In a prospective observational multicenter cohort study of renal transplant recipients, urinary [TIMP-2] × [IGFBP7] was evaluated daily from day 1 to 7 after KTx. Different stages of early graft function were defined: immediate graft function (IGF) (decrease ≥ 10% in serum creatinine (s-crea) within 24 h post KTx); slow graft function (SGF) (decrease in s-crea < 10% within 24 h post KTx); and delayed graft function (DGF) (any dialysis needed within the first week after KTx). A total of 186 patients were analyzed. [TIMP-2] × [IGFBP7] was significantly elevated as early as day 1 in patients with DGF compared to SGF and IGF. ROC analysis of [TIMP-2] × [IGFBP7] at day 1 post-transplant for event "Non-DGF" revealed a cut-off value of 0.9 (ng/mL)2/1000 with a sensitivity of 87% and a specificity of 71%. The positive predictive value for non-DGF was 93%. [TIMP-2] × [IGFBP7] measured at day 1 after KTx can predict early recovery of transplant function and is therefore a valuable biomarker for clinical decision making.

Safety and efficacy of semaglutide in post kidney transplant patients with type 2 diabetes or Post-Transplant diabetes

ObjectiveType 2 diabetes mellitus (T2DM) and post-transplant diabetes mellitus (PTDM) are common in renal transplant recipients. Semaglutide has demonstrated efficacy and safety in patients with T2DM. To date, only a limited number of studies have investigated its use in renal transplant patients. This study assessed the safety and efficacy of semaglutide in post-renal transplant patients. MethodsA retrospective study was conducted at king Abdulaziz Medical City-Riyadh, Saudi Arabia. The subjects of the study were adults and adolescents (>14 years) who had undergone a kidney transplant and had pre-existing T2DM or PTDM. The study subjects were given semaglutide during the study period, from January 2018 to July 2022. The data were collected over a period of 18 months. ResultsA total of 39 patients were included, 29 (74 %) of whom were male. A significant decrease in hemoglobin A1c (HbA1c) was observed during the follow-up period when compared to baseline (8.4 %±1.3 % at baseline vs. 7.4 %±1.0 % at 13–18 months (p < 0.001). A significant reduction in weight was also noted at follow-up as compared to baseline (99.5 kg ± 17.7 vs 90.7 kg ± 16.8 at 13–18 months (p < 0.001). No significant changes were found in renal graft function markers. ConclusionSemaglutide was found to significantly reduce HbA1c levels and weight in post renal transplant patients with diabetes. No significant changes in markers of renal graft function were observed.

Is Lack of Consensus on the Management of Chronic Active Antibody-Mediated Rejection Harming Renal Transplant Recipients?

In 2022, over 92,000 kidney transplants were performed globally. With advancements in transplant science, 1-year graft survival rates have reached 94.3% for deceased donor kidney transplant recipients, and 97.8% for living recipients. However, 5-year graft survival remains at 76.3% and 86.5%. Antibody-mediated rejection (AMR) is one of the most common causes of immune-related allograft rejection. Chronic active AMR (CABMR) typically develops 6–12 months post-transplant; 76% of kidney transplant recipients with CABMR experience graft loss 1.9 years after diagnosis. Despite these alarming figures, consensus guidelines on the management of post-transplant patients have not been updated with advancements in testing and protocol biopsies, and there is currently no consensus in Europe on CABMR management.

Outcomes of Bladder Washout for the Treatment of Recurrent Urinary Tract Infections After Renal Transplantation.

Background Current literature suggests that anywhere from 2.9-27% of renal transplant recipients (RTR) will develop recurrent urinary tract infections (UTIs) (≥2 UTIs over six months or ≥3 UTIs over 12 months). Recurrent UTIs are of particular importance to RTR given its increased risk for allograft fibrosis and overall patient survival. Alternative solutions are needed for the management of recurrent UTIs, especially given the vulnerability of RTR to UTIs. We hypothesize that bladder washout (BW) reduces the incidence and recurrence of UTIs in RTR. Methods This is a retrospective study evaluating the utility of BW procedures on RTR diagnosed with recurrent UTIs between December 2013 and July 2021 at a single center. Results A total of 106 patients were included in the study with a total of 118 BW performed. 69% of patients were successfully treated with BW, meaning they no longer met the criteria for recurrent UTIs (<1 UTI) in the six-month post-BW period. The mean number of UTIs was 2.76 (range 2-7) before the BW and 1.16 (range 0-5) after the BW. On average, there were 1.60 fewer UTIs in the post-BW period compared to the pre-BW period (p<0.0001). There is no statistically significant difference in success rates stratified by bacterial class (p=1) or antimicrobial resistance class (p=0.6937). Conclusion BWdecreased the incidence of UTIs in the six-month post-operative period as nearly 70% of patients did not have UTI recurrence. This data provides evidence that BW may have utility in transplant recipients with recurrent UTIs. We hope this will stimulate further prospective randomized studies in this area.

Clinical Outcomes of Renal Transplant Recipients Undergoing Percutaneous Coronary Intervention

Clinical outcomes of patients with renal transplant (RT) undergoing percutaneous coronary intervention (PCI) remain poorly elucidated. Between 2014 and 2021, data were analysed for the following three groups of patients undergoing PCI enrolled in a multicentre Australian registry: (1) RT recipients (n=226), (2) patients on dialysis (n=992), and (3) chronic kidney disease (CKD) patients (estimated glomerular filtration rate [eGFR], 30‒60 mL/min per 1.73 m2) without previous RT (n=15,534). Primary outcome was 30-day major adverse cardiac and cerebrovascular events (MACCEs)-composite of mortality, myocardial infarction, stent thrombosis, target vessel revascularisation, and stroke. RT recipients were younger than dialysis and patients with CKD (61±10 vs 68±12 vs 78±8.2 years, p<0.001). Patients with RT less frequently had severe left ventricular dysfunction compared with dialysis and CKD groups (6.7% vs 14% and 8.5%); however more, often presented with acute coronary syndrome (58% vs 52% and 48%), especially STEMI (all p<0.001). Patients with RT and CKD had lower rates of 30-day MACCE (4.4% and 6.8% vs 11.6%, p<0.001) than the dialysis group. Three-year survival was similar between RT and CKD groups, however was lower in the dialysis group (80% and 83% vs 60%, p<0.001). After adjustment, dialysis was an independent predictor of 30-day MACCE (odds ratio [OR] 1.90, 95% confidence interval [CI] 1.44‒2.50, p<0.001), however RT was not (OR 0.91, CI 0.42‒1.96, p=0.802). Both RT (hazard ratio [HR] 2.07, CI 1.46‒2.95, p<0.001) and dialysis (HR 1.35, CI 1.02‒1.80, p=0.036) heightened the hazard of long-term mortality. RT recipients have more favourable clinical outcomes following PCI compared with patients on dialysis. However, despite having similar short-term outcomes to patients with CKD, the hazard of long-term mortality is significantly greater for RT recipients.

Urinary Mitochondrial DNA Induces an Inflammatory Response in Peripheral Blood Mononuclear Cells

Background: Mitochondria are semiautonomous cell organelles having its own nucleic acid. Mitochondrial DNA (Mt-DNA) remain in hypomethylated (CpG) state and impose an immunogenic response by binding to the toll-like receptor (TLR-9) through the NF-kB pathway. Innate immune cells recognize the hypomethylated pattern of mt-DNA and quickly trigger the innate immune response. The immunomodulatory effects of urinary mt-DNA derived from renal transplant recipients with COVID-19-associated acute kidney injury (AKI) have not been studied. Materials and Methods: Healthy donor peripheral blood mononuclear cell (PBMC) was cultured with the urinary Mt-DNA derived from the renal transplant recipients, who previously developed SARS-CoV-2 infection associated AKI. Cell activation was measured by the flow cytometry. In cell pellets, interleukin IL-6, IL-10, and Myd88, TLR-9 mRNA transcript expression was measured by the reverse transcription polymerase chain reaction. The IL-6 and IL-10 cytokine levels were measured by the enzyme-linked immunosorbent assay in culture supernatants. Results: The urinary mitochondrial DNA (umt-DNA) significantly induces the activation of &gt; 75% of PBMCs. The m-RNA transcript expression of the inflammatory gene in control versus umt-DNA treated PBMCs was for IL-6 (0.99 ± 0.05 vs. 2.18 ± 1.15 au; P = 0.004), MYD88 was (1.00 ± 0.05 vs. 1.55 ± 0.31; P &lt; 0.001), TLR-9 (1.00 ± 0.05 vs. 3.33 ± 1.37 au; P &lt; 0.001) was upregulated, and the IL-10 (1.00 ± 0.13 vs. −1.73 ± 0.58; P &lt; 0.001) level was downregulated. However, in PBMC culture supernatants, IL-6 level in control versus umt-DNA-treated groups were (37.50 ± 13.79 vs. 186.9 ± 15.50 pg/mL; P &lt; 0.001), which was significantly higher in umt-DNA-treated groups and the IL-10 (8.80 ± 2.16 vs. 7.60 ± 3.12 pg/mL; P = 0.32) level was similar between the control- and umt-DNA-treated groups. Conclusions: Urinary Mt-DNA significantly induces the inflammatory cytokine IL-6 secretion from the PBMCs through the Myd88-dependent pathway.

Rhabdomyolysis and Neuroleptic Malignant Syndrome in a Postrenal Transplant Patient: Is Desidustat a Culprit?

We report a case of a 46-year-old female – a postrenal transplant patient, having developed rhabdomyolysis and neuroleptic malignant syndrome (NMS), after 2.5 months of desidustat initiation – for anemia. Post renal transplant anemia (PTA) is common among renal transplant recipients. Apart from treating it with iron supplements, folic acid, andrecombinant human erythropoietin (EPO), novel agents like hypoxia-inducible factor–prolyl hydroxylase domain (HIF–PHI) are also used, with a very few studies available on its efficacy and safety in PTA patients. Anemia occurring in the first 6 months is called early PTA – occurring most commonly due to iron deficiency, while anemia occurring after 6 months is called late PTA – associated with impaired graft function. The optimal target of hemoglobin in transplant recipients is 12.5–13 gm/dl, which is higher than targets in chronic kidney disease patients. NMS is a life-threatening emergency – mainly seen in patients on antipsychotic medications. It needs to be differentiated from other closely related conditions such as central nervous system infections (meningitis and encephalitis), tetanus, heatstroke, serotonin syndrome, and thyrotoxicosis. Desidustat is an oral HIF–PHI that stimulates erythropoiesis by preventing EPO degradation. Its adverse effects include high blood pressure, myocardial infarction, heart failure, high potassium, and dizziness; however, there is only one case report of rhabdomyolysis associated with desidustat, and none of NMS. It is, therefore, important to be aware of this potential severe side effect of the drug that was not known earlier so that practicing physicians can be vigilant of the same.

Two-Year Follow-up of Necrotic Herpetic Retinopathy in a Renal Transplant Recipient

Visual disturbances are common in patients who received renal transplant. Visual acuity is reduced in 60% of renal transplant patients after 10-year posttransplant. The most common causes are cataracts, diabetic retinopathy, and hypertensive retinopathy. However, infectious causes of visual loss are rare and most commonly associated with cytomegalovirus and toxoplasmosis infections. Here, we report a 32-year-old male who developed visual loss 6 months after receiving a live-related kidney transplant. The patient had a history of varicella infection in the immediate posttransplant period. The visual loss was secondary to acute retinal necrosis probably secondary to a Varicella infection. This rare manifestation is even more unique in a posttransplant scenario which is usually associated with progressive outer retinal necrosis. The patient had developed irreversible visual loss secondary to the retinal necrosis. Here, we report this rare association as well as 2-year ophthalmological follow-up of this patient.

23 Navigating Drug-Induced Acute Interstitial Nephritis and Renal Papillary Necrosis in a Renal Transplant Recipient

23 Navigating Drug-Induced Acute Interstitial Nephritis and Renal Papillary Necrosis in a Renal Transplant Recipient

Thrombotic Microangiopathy in Renal Transplant Recipients

Background and Aim: Thrombotic microangiopathy (TMA) is a disease of microvasculature, triggered by numerous immunological and nonimmunological factors. The aim of this study is to identify the incidence, etiology, and clinical characteristics of posttransplant TMA in renal allografts and its impact on graft outcome. Patients and Methods: In this retrospective study, the records of patients who underwent renal transplantation between January 2013 and December 2017 were reviewed, and those recipients who had allograft biopsy-proven TMA were analyzed. Based on the clinical characteristics and investigations, the recipients were divided into two groups: those with systemic features of TMA and those with allograft-limited TMA. The clinical course and graft outcome of both the groups were compared and analyzed. Results: The number of patients who underwent renal transplantation during the study period was 212. Out of them, 16 patients had biopsy-proven TMA. Five patients had TMA with systemic features and the remaining 11 patients had allograft-limited TMA. In this study, the incidence of TMA among postrenal transplant recipients was 7.5%. The most common cause for TMA was acute antibody-mediated rejection (ABMR), followed by TMA due to tacrolimus toxicity. In one patient, TMA was secondary to disseminated tuberculosis (TB). TB as a cause of TMA is rarely reported. One-year graft survival in patients with allograft-limited TMA was 72.7% when compared to 50% in patients with systemic TMA, but this difference was statistically insignificant (P = 0.2). The graft loss was high in patients with TMA secondary to ABMR in both the groups. Conclusion: One-year graft survival is better in patients with allograft-limited TMA. Diligent search for an etiology for TMA should be made in all patients with TMA, as the treatment differs between each category.

Transplant Renal Artery Stenosis with Varied Clinical Presentations

Renal vascular complications constitute a clinically significant cause of morbidity following renal transplantation. Transplant renal artery stenosis (TRAS) is a well-recognized complication accounting for ~75% of posttransplant vascular complications. Early recognition and prompt correction of TRAS can prevent adverse outcomes, including graft loss. This series is a summary of four renal transplant recipients who developed TRAS at varied time periods and with varied clinical presentations. A 23-year-old male who presented after 1½ months of renal transplantation with accelerated hypertension was diagnosed with TRAS and was treated successfully with percutaneous transluminal angioplasty with stenting. A 26-year-old male with acute allograft dysfunction after 1 month of transplantation without worsening hypertension was diagnosed with TRAS, which was treated successfully with angioplasty and stenting. A 49-year-old male who presented to the emergency with pulmonary edema secondary to accelerated hypertension (Pickering syndrome) after 2 months of transplantation was diagnosed to have TRAS, which was treated successfully with angioplasty with stenting. A 44-year-old male with an incidentally detected TRAS-like clinical picture secondary to kinking in the transplant renal artery in the immediate posttransplant period was successfully treated with re-exploration and repair. All the patients were screened with Doppler ultrasonogram and computed tomogram-angiography supported the diagnosis in three of the cases. None of the cases developed procedure-related complications including contrast-associated nephropathy. All the patients on follow-up after 6 months of the intervention are normotensive with normal renal function. A high index of suspicion is required in the early identification of TRAS, which is a reversible cause of hypertension and graft dysfunction. The risk of contrast-associated nephropathy cannot hinder or delay the diagnosis especially, in emerging transplant centers. The endovascular procedures used today for the treatment of TRAS are safe with high technical success rates.

Pediatric Transplant Experience from a Single Center in South India

Background and Objective: Pediatric renal transplantation is a life-saving procedure for children with end-stage renal disease. This study aims to analyze the outcomes of pediatric renal transplants at our center, focusing on patient demographics, donor sources, surgical techniques, posttransplant complications, graft survival, and rejection rates. Methodology: A retrospective analysis was conducted on 43 pediatric kidney transplant recipients. Data on recipient age, gender, donor type, pretransplant dialysis, donor characteristics, surgical techniques, native kidney disease, induction therapy, maintenance immunosuppression, posttransplant infections, graft survival, and rejection episodes were collected and analyzed. Results: We performed 43 pediatric kidney transplants in total. The average age was 13.7 years (±3.81), with 8 (18.6%) being under the age of ten, 11 (25.6%) being between the ages of eleven and fourteen, and 24 (55.8%) being between the ages of fifteen and eighteen. There were 43 recipients: 27 males and 16 females. There were four (9.3%) deceased donor renal transplants and 39 (90.7%) live-related kidney transplants. Right internal iliac artery and right external iliac vein anastomosis were found in 32 (74.4%) cases, right external iliac artery and right external iliac vein in 9 (20.9%), right common iliac artery and right common iliac vein in 1 (2.3%), and right common iliac and right internal iliac in 1 (2.3%). Induction was used in 27 recipients (62.8%). Graft survival was seen at 1 year in 42 (97.7%) patients and at 5 years in 34 (81%). Biopsy-proven rejection occurred in 22 (51.2%) of the recipients, with antibody-mediated rejection occurring in 8 (18.6%) and cellular rejection occurring in 22 (51.2%). Graft loss was caused by acute cellular rejection in three (23.1%) cases, graft pyelonephritis in 2 (15.4%), and an unknown cause in 2 (15.4%). There were no significant connections with antibody-mediated rejection. Conclusion: Our study provides valuable insights into the outcomes of pediatric renal transplantation at our center. Despite the challenges of graft rejection and posttransplant infections, favorable graft survival rates were achieved. Cellular rejection emerged as a significant risk factor for graft survival, highlighting the importance of effective immunosuppressive management. Our findings emphasize the need for close follow-up, infection control measures, and individualized immunosuppressive strategies to optimize long-term outcomes in pediatric renal transplant recipients. Further research is warranted to refine protocols and address the specific needs of this vulnerable patient population.

Clinico-epidemiological characteristics of early- versus late-onset cytomegalovirus disease among renal transplant recipients: A two-decade experience

BackgroundReactivation of cytomegalovirus (CMV) infection in transplant patients is high because of immunosuppression. We have evaluated the clinical and epidemiological characteristics of early versus late onset of CMV infection among renal transplant recipients. MethodsA single center retrospective observational study was conducted among renal transplant recipients who underwent kidney transplant between January 2002 and December 2021. CMV disease was classified as early or late depending on its detection prior to or after 90 days post-transplantation. Herein, we reported the differences between early and late onset of CMV disease with respect to clinical symptoms, the use of immunosuppression and the impact on graft outcomes. ResultsOut of total 2164 renal transplant recipients, 156 patients (7.2%) were diagnosed with CMV disease. Among these 156 patients, 25 patients (16%) had early CMV while 131 patients (84%) had late CMV. Overall, the two groups did not differ with respect to the induction or maintenance of immunosuppressive agents. However, the proportion of CMV syndrome was greater among early (56.0%) than late (26.7%) CMV groups (p = 0.01). In contrast, tissue invasive disease was more frequent among late (73.3%) in comparison to early (44.0%) CMV groups (p = 0.01). Among clinical symptoms, diarrhea was more frequent in late (63.4%) vs. early (36%) CMV-affected patients (p = 0.01). Graft loss occurred in 4.0% of early CMV group vs. 25.2% of late CMV group (p = 0.03). Neither of the clinical groups differed with respect to occurrence of biopsy-proven allograft rejection post-infection. ConclusionsEarly CMV disease presents more frequently as CMV syndrome while late CMV disease usually manifests itself as tissue invasive disease. Graft loss is more common in patients with late onset of CMV disease.

Post-Transplant Fecal Carriage of Antibiotic Resistant and B-Lactamases-Producing Enterobacteriales among Renal Transplant Recipients.

The intestinal colonization and transmission of antibiotic-resistant Enterobacteriales to renal transplant recipients may pose a threat to them because they are profoundly immunocompromised and vulnerable to infection. Hence, it is crucial to identify these antibiotic-resistant fecal Enterobacteriales harboring high-risk populations. The objective of this study was to determine antibiotic resistance as well as β-lactamases production in fecal Enterobacteriales among renal transplant recipients. The stool samples, one collected from each transplant recipient, were processed for isolation and identification of Enterobacteriales and were tested for their antibiotic susceptibility, extended-spectrum β-lactamase, and metallo-β-lactamase production by standard methods. A total of 103 Enterobacteriales comprising of Escherichia coli (86.4%), Klebsiella species (11.7%), and Citrobacter species (1.9%) were isolated and more than 60% of the E. coli were found resistant to ceftazidime and ciprofloxacin and around half of the Klebsiella species were resistant to ceftazidime and fluroquinolones. Theextended-spectrum β-lactamase production was seen in 3.4% and 8.3% and metallo-β-lactamase production in 24.7% and 33.3% of E. coli and Klebsiella species, respectively. The high proportion of β-lactamase-producers were resistant to piperacillin-tazobactam, meropenem, gentamicin, and amikacin than β-lactamases non-producers. Since the antibiotic resistance is higher in fecal Enterobacteriales, eachrenal transplant recipient should be screened for these highly resistant intestinal colonizers after transplantation in order to prevent infections and toreduce the rate of transplant failure due to infections.

Lived Experiences of Breast Cancer Survivors and Renal Transplant Recipients: A Comparative Phenomenological Study

Lived Experiences of Breast Cancer Survivors and Renal Transplant Recipients: A Comparative Phenomenological Study

De-novo use of generic tacrolimus (Adoport) in renal transplant recipients: A single center experience from Türkiye

Objective: Renal transplantation is the best treatment for end-stage kidney disease, and tacrolimus has become an important immunosuppressive treatment for kidney transplant patients since it was introduced. After the first generic tacrolimus has been approved by the FDA, studies have begun to compare the effectiveness and safety of generic tacrolimus with the original tacrolimus. When using generic immunosuppressive therapies, it is also necessary to ensure that it provides adequate immunosuppression and does not cause severe toxicity. This study aims to compare clinical outcomes, including acute rejection, graft loss and adverse reactions, in patients receiving brand tacrolimus (Prograf, Astellas Pharma, U.S.) or generic tacrolimus (Adoport, Sandoz, UK) from the start of kidney transplant therapy. Study Design: Renal transplant recipients between 1 January 2015-1 March 2020 were screened retrospectively. All patients receiving de novo generic tacrolimus (n:51) and randomly selected 102 control renal transplant recipients receiving original tacrolimus were included in this study. Materials and Methods: We evaluated and recorded demographic, clinical and laboratory data including age, gender, primary kidney disease, donor type (live or dead), induction and death regimen, tacrolimus dose, tacrolimus through levels, serum creatinine, biopsy-confirmed acute rejection episodes, delayed transplant function, positive BK polyomavirus in the urine, BK polyomavirus-related nephropathy, cytomegalovirus infection in 1-year follow-up. Results: Most of the patients were male (64.1%) with a mean age of 38.3 years. There was no significant difference in demographic characteristics between the original and generic tacrolimus groups. No differences were found in terms of creatinine levels, total daily dose of tacrolimus and tacrolimus trough levels at discharge and the first year. Additionally, biopsy-confirmed acute rejection in the following year after transplantation, BKPyV positivity in urine, BKPyVAN, CMV viremia and adverse reactions related to tacrolimus were similar between the two groups. Conclusion: With this study, we aimed to contribute to the literature with our experience on the use of generic tacrolimus from our country. As a result of our study, we noted that generic tacrolimus can be safely preferred for de-novo use with close drug-level monitoring because it is an immunosuppressant agent with a narrow therapeutic index. There is a continuing need for randomized prospective-designed and multi-centric studies with a wide range of patients.

Safety of Docetaxel in a Patient with Metastatic Castration-Resistant Prostate Cancer After Kidney Transplantation: A Case Report

There are limitations in treating advanced prostate cancer (PC), especially castration-resistant (CR) cases, in renal transplant recipients (RTRs). We describe the case of RTR with metastatic CRPC (mCRPC) treated with docetaxel. A 60-year-old man with end-stage renal disease due to autosomal-dominant polycystic kidney disease (ADPKD) underwent living-related kidney transplantation. A year later, he was diagnosed with PC (prostate-specific antigen level: 998 ng/mL). Prostate biopsy revealed prostatic adenocarcinoma with a Gleason score of 4 + 4 = 8. Radiographic examination revealed seminal vesicle invasion and multiple bone and lymph node metastases. Combined androgen blockade therapy was initiated; however, the patient was diagnosed with CRPC 6 months later. Triweekly docetaxel therapy was administered 28 months after diagnosis. The patient successfully completed 7 cycles of this therapy without major adverse events. However, after the 7th cycle, he developed a high fever caused by an infection of ADPKD-associated renal cysts. Therefore, docetaxel was discontinued, and enzalutamide was started, followed by abiraterone, but without any effect. We then introduced cabazitaxel but discontinued it because of hepatic dysfunction. Hence, the patient underwent a docetaxel rechallenge. He was administered the PEGylated form of the recombinant human granulocyte colony-stimulating factor for neutropenia prophylaxis. After 6 cycles of rechallenge docetaxel therapy, the patient accidentally fell, resulting in a cervical spine fracture and subsequent death due to respiratory failure. Docetaxel can be safely delivered to patients with CRPC after renal transplantation who are taking oral immunosuppressants. It can be a good treatment option for them.

A rare colonoscopic finding in a renal transplant recipient.

A rare colonoscopic finding in a renal transplant recipient.