Kidney Injury in Patient with Non-small-cell Lung Cancer Receiving Tepotinib.

We herein report a 68-year-old man with advanced non-small-cell lung cancer treated with tepotinib who showed marked general edema, hypoalbuminemia, and an elevated serum creatinine level. Although tepotinib-induced kidney injury due to creatinine transporter inhibition has been reported, renal biopsy findings suggested tubulointerstitial injury due to decreased renal blood flow, likely secondary to refractory fluid retention. This case highlights the potential for true kidney injury during tepotinib therapy and underscores the importance of careful monitoring and management of adverse renal effects.

Successful Treatment of Non-small-cell Lung Cancer with Atezolizumab Following Tubulointerstitial Nephritis Due to Pembrolizumab.

We herein report a 75-year-old man with non-small-cell lung cancer who developed tubulointerstitial nephritis due to pembrolizumab administration. He was successfully treated with atezolizumab following steroid administration. He was initially diagnosed with lung adenocarcinoma (T1bN3M1b, stage IV), with a programmed cell death-ligand 1 tumor proportion score of 25-49%.

Prevalence of gastroesophageal reflux disease symptoms and effects of esomeprazole on the quality of life related to reflux and dyspepsia in patients on maintenance hemodialysis.

Background: The prevalence of gastroesophageal reflux disease (GERD) symptoms has not been investigated in patients on maintenance hemodialysis in Japan, and few studies have reported the effect of proton pump inhibitors (PPIs) in hemodialysis patients with GERD symptoms. Here, we investigated the prevalence of GERD symptoms and the effects of the PPI esomeprazole on the quality of life related to reflux and dyspepsia in patients on maintenance hemodialysis.

Methods: This was a cross-sectional/cohort study of hemodialysis outpatients implemented in 10 Japanese medical facilities from October 2012 to March 2014.

Erythropoietin-producing tubercle granuloma in a hemodialysis patient.

Background: We describe a case of a fever of unknown etiology that was caused by a caseating tubercle granuloma which produced erythropoietin. To our knowledge, this is the first report of an erythropoietin- producing granuloma.

Case Presentation: A 48-year-old Japanese man with a 5-year history of maintenance hemodialysis for diabetic nephropathy presented with an intermittent fever over a few months.

A novel mutation ApoE2 Kurashiki (R158P) in a patient with lipoprotein glomerulopathy.

Lipoprotein glomerulopathy (LPG) is a rare glomerulopathy caused by lipoprotein thrombi. In almost all cases of LPG, several apolipoprotein (apo) E mutations were reported. Here, we present a case of LPG caused by a novel mutation that we named ApoE2 Kurashiki, which substitutes arginine with proline at apoE codon 158.

Co-occurrence of poststreptococcal reactive arthritis and acute glomerulonephritis.

We report a 16-year-old patient who developed concurrent poststreptococcal reactive arthritis and acute glomerulonephritis. A high titer of antistreptolysin O antibody confirmed the preceding streptococcal infection. The patient presented with symmetric persistent tenosynovitis of hands and feet.

Mitochondrial DNA mutations in oxyphilic and chief cell parathyroid adenomas.

Background: The potential pathogenetic significance of mitochondrial DNA (mtDNA) mutations in tumorigenesis is controversial. We hypothesized that benign tumorigenesis of a slowly replicating tissue like the human parathyroid might constitute an especially fertile ground on which a selective advantage conferred by mtDNA mutation could be manifested and might contribute to the oxyphilic phenotype observed in a subset of parathyroid tumors.

Methods: We sought acquired mitochondrial DNA mutations by sequencing the entire 16.

A novel free radical scavenger, edarabone, protects against cisplatin-induced acute renal damage in vitro and in vivo.

Accumulating evidence suggests that enhanced peroxidative damage caused by reactive oxygen species (ROS) may contribute to the pathogenesis of cisplatin-induced acute renal failure. Nevertheless, little is known about the involvement of oxygen radicals in cisplatin nephropathy. In this study, we investigated the effects of a novel free radical scavenger, 3-methyl-1-phenyl-pyrazolin-5-one (MCI-186; edarabone), on murine proximal tubular cell (PTC) damage induced by exposure to cisplatin in vitro and on renal function in an in vivo model of cisplatin-induced acute renal failure.