Meningococcemia in a vaccinated child receiving eculizumab and review of the literature.

Background: Atypical hemolytic uremic syndrome (aHUS) is a rare and severe disease characterized by uncontrolled activation and dysregulation of the alternative complement pathway and development of thrombotic microangiopathy. Eculizumab, which is used as a first-line therapy in aHUS, blocks the formation of C5 convertase and inhibits the formation of the terminal membrane attack complex. It is known that treatment with eculizumab increases the risk of meningococcal disease by 1000-2000-fold.

Humoral and cellular immune response to SARS-CoV-2 mRNA BNT162b2 vaccine in pediatric kidney transplant recipients compared with dialysis patients and healthy children.

Background: Compared with the general population, the immune response to COVID-19 mRNA vaccines is lower in adult kidney transplant recipients (KTRs). However, data is limited for pediatric KTRs. In this study, we aimed to assess humoral and cellular immune responses to the COVID-19 mRNA vaccine in pediatric KTRs.

Long-term Results in Children with Henoch-Schönlein Nephritis.

Objective: Henoch-Schönlein purpura (HSP) is a small vessel vasculitis and palpable purpura, with arthritis, gastrointestinal as abdominal pain, and renal involvement as typical clinical findings. The most important prognostic factor for HSP vasculitis is renal involvement. This study aimed to investigate the relationship between clinical, laboratory, and histopathologic findings of children with HSP nephritis with long-term renal prognosis.

Hepatocyte Nuclear Factor 1 Beta Mutation-associated Newborn Onset of Glomerulocystic Kidney Disease: A Case Presentation.

Mutations in hepatocyte nuclear factor-1 beta () are the most commonly identified genetic cause of renal malformations. Heterozygous mutations are associated with renal cysts and diabetes syndrome. Various renal developmental abnormalities and maturity-onset diabetes of the young could be the presenting factors of these mutations.