ABSTRACT
Identical or Monozygotic twin kidney transplant usually possess an excellent immunological match and provide the opportunity to minimize or even avoid immunosuppression toxicity. However, there are concerns regarding disease recurrence among end stage kidney disease (ESKD) patients with an unknown etiology. Together with the risk of inherent, familial disease affecting donors and recipients alike, more invasive tests such as a pretransplant biopsy are being considered to ascertain renal prognosis. A 30-year-old female, known case of CKD Stage 5D from an unknown etiology, with secondary hyperparathyroidism and heart failure, presented at our OPD for kidney transplantation. Her donor is her identical twin who is asymptomatic and denies comorbidities. The recipient discloses a previous history of blood transfusion. Immunological workup revealed the following: matched blood type, zero HLA mismatch, negative T-cell tissue crossmatch but with a positive Class I HLA antigen screen. Antibody specificity revealed the presence of donor specific antibodies (DSA). After workup completion, the patient underwent a right kidney transplant with a preimplantation wedge biopsy on the donor kidney. Immediate graft function was noted post operatively. The wedge biopsy revealed a thinned glomerular basement membrane, consistent with Thin Basement Membrane Nephropathy (TBMN). The patient was started on immunosuppression and prophylaxis during the duration of the post operative period without any complications. Five months post-transplant, both the recipient and donor maintain an adequate renal function without any signs of allograft rejection. In this case report, we have demonstrated that TBMN may serve as a viable donor for a presumed monozygous twin kidney transplantation. When a live donor with TBMN is being considered, a thorough work-up and identification of high-risk features are essential to exclude other progressive renal diseases during the pretransplant evaluation.
ABSTRACT
A 40-year-old Filipino female with a history of right total mastectomy for a low-grade phyllodes tumor was admitted due to stillbirth. Her laboratory results revealed an incidental finding of a positive COVID-19 RT-PCR swab, serum creatinine 1.04 mg/dL, urine RBC 1/HPF, and a 24-hour urine protein of 9.22 grams with hypoalbuminemia and dyslipidemia. Serologic workup was noted to be negative. A kidney biopsy was performed which demonstrated unremarkable light microscopy (LM) and immunofluorescence (IF) with widespread podocyte-foot process effacement, consistent with minimal change disease. She was started on prednisone (1 mg/kg/day) and achieved complete remission after six weeks. A 61-year-old Filipino male with a history of Type 2 Diabetes Mellitus, Hypertension, Dyslipidemia, and mild COVID-19 infection four months prior, now presented with diarrhea. On admission, his COVID-19 RT-PCR swab revealed a reinfection. Workup demonstrated a serum creatinine 3.39 mg/dL, urine RBC 2/HPF, and urine ACR 2.6 g/g. Serologic tests were negative. He was diagnosed with Nephrotic Syndrome and underwent kidney biopsy. Findings showed an unremarkable LM and IF with widespread podocyte-foot process effacement, consistent with minimal change disease. He was started on prednisone (1 mg/kg/day) and achieved complete remission after eight weeks. SARS-CoV-2 (COVID-19) may present with a variety of kidney involvement which includes glomerulopathies such as MCD. An accurate diagnosis using the patient's clinical presentation, renal histopathology, and adjunct laboratory examinations, is essential to direct effective management and good outcomes.
ABSTRACT
AIM: Data published on COVID-19 in the Filipino population, particularly those with end stage kidney disease (ESKD) are still lacking. METHODS: We performed a retrospective, observational study of 68 ESKD patients admitted with COVID-19 infection at a tertiary hospital in Metro Manila, Philippines from April 1, 2020 to July 31, 2020. We compared the clinical features, baseline laboratory data, treatment strategies and short-term outcomes between those who survived and those who died. We also determined the risk factors associated with mortality from COVID-19. RESULTS: Mean age was 54.5 years old, 66% were male. All patients admitted were on maintenance hemodialysis (HD). The most common presenting symptoms were dyspnea (57%), fever (47%) and cough (38%). There was an equal number of patients on high flow nasal cannula (17.7%) and invasive mechanical ventilation (17.7%). ICU admission was required in 17.7% of the cohort. In-hospital death occurred in 25% of the patients. Admission PaO2/FiO2 (PF) ratios (162 ± 134 versus 356 ± 181; p=0.0009) were lower, and procalcitonin (6.07 ± 10.5ng/mL versus 0.73 ± 3.61 ng/mL; p=0.02), lactate dehydrogenase (396 ± 274U/L versus 282 ± 148 U/L; p=0.03), and white blood cell counts (10 ± 7.3 x 109/L versus 6.3 ± 4.2 x 109/L; p= 0.0039) were significantly higher among those who died compared to those who survived. After adjusting for confounders, only low PF ratio (HR 1.01 for every unit decrease, 95% CI 1-1.01) and need for ventilation (HR 6.45, 95% CI 1.16-35.97) conferred a significant risk for in-hospital mortality. CONCLUSION: Short-term, in-hospital mortality is high among patients on chronic hemodialysis admitted for COVID-19 infection. They present similarly with the general population. Low PF ratio on admission and need for ventilation are independent risk factors for in-hospital mortality.