Background Polyarteritis nodosa is a systemic necrotizing vasculitis with a pathogenesis
that is poorly understood. We identified six families with multiple cases of systemic and …

Objective To determine whether there is a seasonal peak onset of systemic juvenile
rheumatoid arthritis (SOJRA) suggestive of an infectious etiology. We examined the seasonal …

The aim of this study was to describe the clinical manifestations and outcomes of a national
cohort of childhood systemic lupus erythematosus (cSLE). All cases of cSLE registered in the …

Although pulmonary symptoms accompany up to 16% of cases of infection with Brucella
melitensis, pleural effusion has rarely been reported. A 12 year old girl had brucellosis with …

Two hyperphosphatemic patients with mutations in GALNT3 showed low intact FGF23
levels with marked increase of processed C‐terminal fragments. FGF23 protein has three O‐…

… Zevin, MD, Senior Lecturer, Department of Internal Medicine; GS Breuer, MD, Lecturer,
Department of Internal Medicine and Rheumatology Clinic; P. Navon, MD, Department of …

We report a new mutation, an A→T transition at nt 3243 in the mitochondrial tRNA leu(UUR)
gene, in a 9-year-old girl who presented with muscle weakness of 3 years duration …

… All three mutations are pathogenic: two are novel (p.Asp727fs and p.Trp122X), and one
is a recurrent mutation, p.R648X. Given the atypical phenotype of these patients with Dent’s …

Aim: To describe a possible relationship between Henoch‐Schönlein purpura and rheumatic
fever. Methods: Patients with features of both diseases were identified by reviewing the …

… to 33% of the patients in the PSRA group (P = .004). The distribution of involved … (P = .0002).
Arthritis was symmetrical in 40% of patients with ARF and 22% of the patients with PSRA (P …