Weekly Nephrology Journal Summary
5–11 September 2026 | Verified sources | Concise clinical review
This week’s clinical focus
Pediatric AKI and nephrotic syndrome, transplant-risk prediction, CKD G5 care pathways, IgA-nephropathy monitoring, and AKI-to-CKD biology.
Adjunctive metolazone in critically ill children with moderate-to-severe acute kidney injury and furosemide-refractory fluid overload.
AI Clinical Summary
In 62 critically ill children with KDIGO stage 2–3 acute kidney injury and furosemide-refractory fluid overload, metolazone was followed by higher urine output over 48 hours. Twenty children (32%) required kidney replacement therapy; a larger 12–24-hour urine-output response was associated with lower odds of KRT. The exploratory, single-center design cannot establish causality or routine benefit, and prospective validation is needed.
Clinical relevance: Moderate
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Mechanisms of regeneration and maladaptive repair in acute kidney injury.
AI Clinical Summary
This review describes how surviving tubular epithelial cells, immune cells, and fibroblasts determine whether AKI resolves or progresses toward CKD. Successful repair restores tubular integrity, whereas persistent cell-cycle arrest, senescence, inflammatory signaling, and extracellular-matrix deposition promote maladaptive repair. The framework is mechanistically informative but does not establish a validated clinical intervention.
Clinical relevance: Moderate
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Performance of the iBox Prognostication System in African American Kidney Transplant Recipients.
AI Clinical Summary
In 3,866 North American kidney transplant recipients, including 1,040 African American recipients, the iBox system showed similar graft-loss discrimination in African American and non-African American groups: c-index 0.80 versus 0.83. Calibration and clinical utility were also broadly consistent through seven years, supporting use in this population while retaining the need for local clinical judgment.
Clinical relevance: High
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Nephrology review frequency, associated factors, and outcomes among people with chronic kidney disease G5: a population-based cohort study in England.
AI Clinical Summary
Among 4,781 adults reaching CKD G5 in England, lower nephrology-review frequency was associated with older age, female sex, deprivation, dementia, and cerebrovascular disease. Lower review frequency was also associated with less KRT initiation, more death without KRT, and more inpatient dialysis initiation. These observational findings highlight inequities and heterogeneous care pathways, not a causal target for a specific visit frequency.
Clinical relevance: High
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Mycophenolate mofetil versus tacrolimus for maintenance of remission in children with frequently relapsing and steroid-dependent nephrotic syndrome: a pilot randomized controlled trial.
AI Clinical Summary
In 40 children with frequently relapsing or steroid-dependent nephrotic syndrome, MMF and tacrolimus produced comparable six-month relapse-free survival and similar 12-month relapse rates. MMF was associated with better kidney-function measures, lower blood pressure, and greater growth velocity, whereas tacrolimus had less favorable renal and cardiovascular profiles. The small, open-label pilot requires larger multicenter confirmation.
Clinical relevance: Moderate
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Clinical Significance of Increased Degree of Hematuria in Patients affected by IgA Nephropathy.
AI Clinical Summary
In 438 matched patients with persistent IgA-nephropathy hematuria, increasing hematuria over follow-up was associated with poorer renal outcomes and independently predicted a composite of sustained eGFR decline or kidney failure. The single-center retrospective design and residual confounding limit inference; the finding supports attention to hematuria trajectories alongside proteinuria and kidney function.
Clinical relevance: Moderate
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