The aim of this study was to assess the association between Raynaud's phenomenon (RP) and specific capillaroscopic findings in patients with SLE and particular clinical manifestations of the disease. A total of 79 patients with SLE were included in the study: 44 of them (43 women) with RP and 35 (32 women) age-, sex-, and disease-duration-matched patients with SLE without RP. Demographic variables, clinical manifestations, laboratory and nailfold capillaroscopy findings were compared between the two groups. Central nervous systemic involvements (P = 0.0038) and peripheral neuropathy (P = 0.0336) were significantly more common in SLE patients with RP, while secondary Sjögren's syndrome (P = 0.0363) was more common in SLE patients without RP. RP occurred in 52 % of patients before SLE onset while 48 % of patients developed RP after they had been diagnosed with SLE. Arthritis/arthralgia (P = 0.0073) was significantly more common in patients who had been diagnosed with RP before the onset of SLE, while mucosal ulcers were more common in patients who contracted RP after the onset of SLE (P = 0.0258). Enlarged capillaries (P = 0.0482), presence of avascular areas (P = 0.0476), capillary hemorrhages (P = 0.0482), and granular blood flow (P = 0.0482) were more common in patients with SLE who also suffered from RP, than in patients with SLE without RP. The frequency of normal (63.6 vs. 82.9 %, P = 0.100) and nonspecific (25 vs. 17.1 %, P = 0.5696) capillaroscopy findings were similar in either groups. Scleroderma-like pattern of capillaroscopy finding was only found in patients with RP [(11.4 %), P = 0.0482]. RP in our patients with SLE was associated with specific clinical manifestations, indicating that prognostic relevance of RP in SLE should be evaluated.

Monitoring of DNase I activity simultaneously with SLEDAI-2K might be a useful tool in the follow-up of SLE. An increase of DNase I activity characterized relapse in most SLE patients, although it did not reach the levels of healthy individuals. A decrease of DNase I activity in SLE flare-ups might be a functional biomarker of a subset of patients with specific dysfunction of apoptotic chromatin degradation.

We assessed the relationship between the serum levels of antibodies against double-stranded DNA (dsDNA), C1q, nucleosomes, histones, C3 and C4 complement components with one another, with organ involvement and overall disease activity in patients with systemic lupus erythematosus (SLE). One hundred seventy-five sera from 99 patients with SLE, 31 sera of patients with other connective tissue diseases, and 20 sera from healthy blood donors were tested. SLE disease activity was assessed by modified SLEDAI-2K (M-SLEDAI-2K), not including complement and anti-dsDNA descriptors. Anti-dsDNA antibodies were measured by indirect immunofluorescence on Crithidia luciliae (CLIFT), standard enzyme-linked immunosorbent assay (ELISA) and ELISA for high-avidity antibodies. The most significant risk factor for renal involvement were anti-C1q antibodies (OR = 3.88, p < 0.05), high-avidity anti-dsDNA antibodies for polyserositis (OR = 7.99, p < 0.01), anti-histone antibodies for joint involvement (OR = 2.75, p < 0.05), and low C3 for cytopenia (OR = 11.96, p < 0.001) and mucocutaneous lesions (OR = 3.32, p < 0.01). Multiple linear regression analysis showed that disease activity in SLE could be predicted by the levels of antibodies against dsDNA determined by standard (p < 0.05) and high-avidity (p < 0.001) ELISA, and inversely associated with concentration of C3 (p < 0.001). Using stepwise method, high-avidity anti-dsDNA antibodies were found to be in the closest association to M-SLEDAI-2K. Moreover, positive test for high-avidity anti-dsDNA antibodies appeared as an independent risk factor for moderately to severely active disease (M-SLEDAI-2K>5) (OR = 5.5, p < 0.01). The presence of high-avidity anti-dsDNA antibodies represented a risk for renal, joint, and most importantly for serosal involvement. Our results suggest that simple and reliable ELISA for high-avidity anti-dsDNA antibodies is the test of good clinical utility for the assessment of global SLE activity.

We present a 43-year-old woman with relapsing-remitting multiple sclerosis (MS) who developed lupus syndrome after 32 months of IFN-beta-1a therapy. She presented with malaise, myalgia, arthralgia and fever. Laboratory tests showed high erythrocyte sedimentation rate, anaemia and lymphopenia. Antibodies to double stranded DNA (dsDNA) of IgG, IgM and IgA classes were detected on Critidia luciliae. Additionally, high levels of anti-nucleosomal antibodies, low levels of anti-histone and anti-Ro/SSA antibodies were also found. Diagnosis of drug-induced SLE was established. Treatment with IFN-beta was discontinued and oral prednisone was started. Twelve weeks after cessation of IFN-beta therapy, the patient's symptoms completely resolved and autoantibodies disappeared. To the best of our knowledge, this is the first report of a patient with MS in whom treatment with IFN-beta induced lupus syndrome and antibodies to dsDNA and nucleosome.

Background Several studies have demonstrated low 25(OH)D3 serum levels, which could influence pathogenesis and clinical outcomes of immune-mediated diseases such as rheumatoid arthritis (RA) (1,2). Objectives In order to investigate the necessity to implement specific vitamin D patient related outcomes we performed a pilot European multicentre study, involving individuals from different countries/latitudes, to explore 25(OH)D3 serum levels and their possible correlation with disease activity and related outcomes in RA patients during winter season. Methods We enrolled 270 RA patients (not treated with vitamin D supplementation) and 180 healthy subjects as controls (CNT), from Rheumatology centers in 10 European countries. RA patients mean disease duration was 10±9 years and mean age 56±10 years. Patients informed consent was obtained before collecting blood samples. Complete medical history, health assessment questionnaire (HAQ), rheumatoid arthritis impact disease score (RAID), disease activity scale (DAS28) were recorded. 25(OH)D3 serum levels were evaluated centrally using chemiluminescence immunoassay with an automatic analyser (LIAISON, DiaSorin), and classified as normal (>30 ng/ml), insufficient (between 20 and 30 ng/ml) or deficient (<20 ng/ml) (3). Results 25(OH)D3 serum levels were significantly lower in RA patients compared to controls (median 16 vs 20 ng/ml) (p<0.0001). In particular, we registered 25(OH)D3 deficiency (<20 ng/ml) in 25% and insufficiency in 70% of RA patients. Male and female RA patients showed similar 25(OH)D3 values (median 19 vs 17 ng/ml) (p=n.s.). We found statistically significant difference in 25(OH)D3 levels between some European countries such as significantly higher 25(OH)D3 serum levels in Spanish RA patients (Canaries Islands) compared to patients from Latvia, Lithuania, Romania, Croatia, Russia and Italy (p<0.01). In agreement with previous observations (4), we found in RA patients statistically significant negative correlations between 25(OH)D3 values and HAQ (r=-0.29, p=0.03), RAID (r=-0.32, p=0.02), and DAS28 scores (r=-0.41, p=0.003), respectively. Conclusions The results of this multicentre study confirms, at least in winter time, the presence of significantly lower 25(OH)D3 serum levels in RA patients than in healthy control subjects, which seem correlated with disease activity at all latitudes in Europe. The significant negative correlations observed between 25(OH)D3 serum levels and DAS28, HAQ and RAID scores justify the need to develop specific questionnaires for patient reported outcomes (PRO) vitamin D-related, and to validate them in a large European multicentre study. References 1. Cutolo et al. Autoimmun Rev 2011;11:84-87. Aranow C. J Investig Med. 2011; 59: 881–886. 3. Holick MF. N Engl J Med 2007;357:266-81. 4. Cutolo M. Ann Rheum Dis 2013;72:473-5. Disclosure of Interest None declared DOI 10.1136/annrheumdis-2014-eular.4145