Background Anti-SSA/Ro autoantibodies are among the most frequently detected extractable nuclear antigen and have mainly been associated with primary Sjögren’s syndrome (pSS), systemic lupus erythematosus (SLE) undifferentiated connective tissue disease (UCTD). Objectives Is there a common signature to all patients expressing anti-Ro60 regardless of their phenotype? Methods Using high-throughpu...

We consider Lorentz–Karamata spaces, small and grand the so-called L $\mathcal {L}$ , R {R}$ LL {LL}$ LR {LR}$ RL {RL}$ RR {RR}$ spaces. The quasi-norms for a function f in each of these spaces can be defined via nonincreasing rearrangement ∗ $f^*$ or maximal $f^{**}$ . investigate when are equivalent. Most proofs based on Hardy-type inequalities. As an application, we demonstrate how our gener...