Rheumatoid factor and anti-citrullinated peptide antibodies in the general population: hepatitis B and C virus association and 15-year-risk of rheumatoid arthritis.

OBJECTIVES: The study aimed to determine the prevalence of rheumatoid factor (RF) and anti-citrullinated peptides (ACPA), to estimate the association with hepatitis B (HBV) or C (HCV) virus infections and the 15-year risk of developing RA in a large cohort from a Northern Italian region. METHODS: In 1998, 15,907 subjects between the ages of 18 and 75 were randomly selected 1:4 for HBV and HCV testing; more recently, we tested a subgroup of sera for RF (n=2196) and ACPA (n=2525). Administrative databases were searched after 15 years for incident RA diagnoses occurring between 1998 and 2013. RESULTS: RF was positive in 8.1% of cases with 10% of RF-positive subjects having HBsAg (p=0.004) and 9% anti-HCV. ACPA were detected in 4.8% of subjects with 5% of the ACPA-positive subjects having HBsAg and 5.9% anti-HCV. Older subjects had higher positivity rates for both RF and ACPA. HBsAg and anti-HCV were detected in 5.5% and 4.3% of sera, respectively. Over 15 years, 10 RA cases were recorded (9 women, median age at diagnosis 52 years) with RF previously positive in 2/10 and ACPA in 5/10 cases. RF and ACPA were associated with relative risks for developing RA of 5.7 (adjusted for HBsAg status; 95% CI 1.2-26.3) and 13.2 (95% CI 3.8-46.3), respectively. CONCLUSIONS: Our data in a large cohort from an unselected general population confirm a higher risk of RA development associated with ACPA compared to RF. HBV exposure correlates with RF but not with ACPA positivity.

Efficacy and safety of baricitinib in 446 patients with rheumatoid arthritis: a real-life multicentre study.

OBJECTIVES: Baricitinib, an oral Janus kinase (JAK) 1-2 inhibitor, is currently used along biologic DMARDs (bDMARDs) after the failure of methotrexate (MTX) in rheumatoid arthritis (RA). We investigated the efficacy and safety of baricitinib in real life. METHODS: We prospectively enrolled 446 RA patients treated with baricitinib from 11 Italian centres. Patients were evaluated at baseline and after 3, 6, and 12 months. They were arrayed based on previous treatments as bDMARD-naïve and bDMARD-insufficient responders (IR) after the failure or intolerance to bDMARDs. A sub-analysis differentiated the effects of methotrexate (MTX) and the use of oral glucocorticoids (OGC). RESULTS: Our cohort included 150 (34%) bDMARD-naïve and 296 (66%) bDMARD-IR patients, with 217 (49%) using baricitinib as monotherapy. Considering DAS-28-CRP as the primary outcome, at 3 and 6 months, 114/314 (36%) and 149/289 (51.6%) patients achieved remission, while those in low disease activity (LDA) were 62/314 (20%) and 46/289 (15.9%), respectively; finally at 12 months 81/126 (64%) were in remission and 21/126 (17%) in LDA. At all-timepoints up to 12 months, bDMARDs-naïve patients demonstrated a better clinical response, independently of MTX. A significant reduction in the OGC dose was observed at 3 and 12 months in all groups. The serum positivity for both rheumatoid factors (RF) and anti-citrullinated protein antibodies (ACPA) conferred a lower risk of stopping baricitinib due to inefficacy. Fifty-eight (13%) patients discontinued baricitinib due to adverse events, including thrombotic events and herpes zoster reactivation. CONCLUSIONS: Real-life data confirm the efficacy and safety profiles of baricitinib in patients with RA and provide evidence that drug survival is higher in bDMARDs-naïve and seropositive patients.

COVID-19 as part of the hyperferritinemic syndromes: the role of iron depletion therapy.

SARS-CoV-2 infection is characterized by a protean clinical picture that can range from asymptomatic patients to life-threatening conditions. Severe COVID-19 patients often display a severe pulmonary involvement and develop neutrophilia, lymphopenia, and strikingly elevated levels of IL-6. There is an over-exuberant cytokine release with hyperferritinemia leading to the idea that COVID-19 is part of the hyperferritinemic syndrome spectrum. Indeed, very high levels of ferritin can occur in other diseases including hemophagocytic lymphohistiocytosis, macrophage activation syndrome, adult-onset Still's disease, catastrophic antiphospholipid syndrome and septic shock. Numerous studies have demonstrated the immunomodulatory effects of ferritin and its association with mortality and sustained inflammatory process. High levels of free iron are harmful in tissues, especially through the redox damage that can lead to fibrosis. Iron chelation represents a pillar in the treatment of iron overload. In addition, it was proven to have an anti-viral and anti-fibrotic activity. Herein, we analyse the pathogenic role of ferritin and iron during SARS-CoV-2 infection and propose iron depletion therapy as a novel therapeutic approach in the COVID-19 pandemic.

Retrospective evaluation of patient profiling and effectiveness of apremilast in an Italian multicentric cohort of psoriatic arthritis patients.

OBJECTIVES: We aimed to evaluate the baseline characteristics, the reasons for prescription, and the effectiveness/safety profile of real-life apremilast for the treatment of psoriatic arthritis (PsA). METHODS: PsA patients treated with apremilast were retrospectively extracted from an Italian multicentric cohort. Baseline population characteristics and reasons for apremilast prescription were analysed. Clinical response was defined as the proportion of patients achieving Disease Activity in PSoriatic Arthritis (DAPSA) remission/low disease activity (LDA), minimal disease activity (MDA), and very low disease activity (VLDA). Six-month retention rate was computed by the Kaplan-Meier method, with a detailed analysis of reasons for discontinuation. Univariate and multivariate models were developed to examine predictors of clinical response and persistence. RESULTS: The study population included 131 patients mainly with oligoarticular PsA (58%), carrying at least one comorbidity (64.1%, in particular history of malignancies [25.9%] and latent tuberculosis [16.3%]) treated with apremilast as first-line targeted therapy (47.7%) or in biologics failures (52.3%). Contraindication to biologics (60.3%) and lack of poor prognostic factors (27.5%) were the most frequent reason for apremilast prescription. The 6-month retention rate was 72.1%. Inefficacy (n=7), diarrhoea (n=10), nausea (n=3), and headache (n=7) were the most frequent reasons for discontinuation. At 3 months DAPSA LDA/remission, MDA, and VLDA were observed in 40.3, 6.7, and 5.6% of patients, respectively. Female sex was a negative predictor of both retention rate and clinical response. CONCLUSIONS: In our real-life analysis apremilast was mainly used in oligoarticular PsA carrying comorbidities leading to contraindications to biologics. Effectiveness and safety profiles were consistent with clinical trials.

Exosomes in Systemic Sclerosis: Messengers Between Immune, Vascular and Fibrotic Components?

: Systemic sclerosis (SSc) is a rare autoimmune disease, characterized by vasculopathy and fibrosis of the skin and internal organs. This disease is still considered incurable and is associated with a high risk of mortality, which is related to fibrotic events. An early diagnosis is useful for preventing complications, and targeted therapies reduce disease progression and ameliorate patients' quality of life. Nevertheless, there are no validated biomarkers for early diagnosis with predictive prognostic value. Exosomes are membrane vesicles, transporting proteins and nucleic acids that may be delivered to target cells, which influences cellular behavior. They play important roles in cell-cell communication, both in physiological and pathological conditions, and may be useful as circulating biomarkers. Recent evidences suggest a role for these microvesicles in the three main aspects related to the pathogenesis of SSc (immunity, vascular damage, and fibrosis). Moreover, exosomes are of particular interest in the field of nano-delivery and are used as biological carriers. In this review, we report the latest information concerning SSc pathogenesis, clinical aspects of SSc, and current approaches to the treatment of SSc. Furthermore, we indicate a possible role of exosomes in SSc pathogenesis and suggest their potential use as diagnostic and prognostic biomarkers, as well as therapeutic tools.

Spotlight on sirukumab for the treatment of rheumatoid arthritis: the evidence to date.

Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease primarily affecting synovial joints and is characterized by persistent high-grade systemic inflammation. Proinflammatory cytokines, particularly interleukin-6 (IL-6), are of crucial importance in the pathogenesis of the disease, driving both joint inflammation and extra-articular comorbidities. Tocilizumab, a humanized IL-6 receptor-inhibiting monoclonal antibody, has been the first, and, to date, the only, IL-6 inhibitor approved for the treatment of RA. Many studies have demonstrated the potency and effectiveness of tocilizumab in controlling disease activity and radiological progression of RA. These successful results have encouraged the development of novel IL-6 inhibitors, among which a promising agent is sirukumab (SRK), a human anti-IL-6 monoclonal antibody currently under evaluation in Phase II/III studies in patients with RA, systemic lupus erythematosus, giant-cell arteritis, and major depressive disorder. The evidence to date indicates SRK as an effective and well-tolerated new therapeutic tool for patients with active RA, with some preliminary data suggesting a specific beneficial impact on relevant systemic complications associated with the disease, such as depression and cardiovascular disease. Conversely, although pathophysiological considerations make plausible the hypothesis that IL-6 blockade with SRK may also be beneficial in the treatment of many diseases other than RA (either autoimmune or not), available clinical data in patients with systemic lupus erythematosus do not seem to support this view, also giving rise to potentially relevant concerns about drug safety. If large Phase III clinical trials currently in progress in patients with RA confirm the efficacy and tolerability of SRK, then in the long term, this drug could, in the near future, occupy a place in the treatment of the disease, potentially also opening the doors to a more extended use of SRK in a wide range of disorders in which IL-6 plays a key pathogenic role.

Phase Ib study of poly-epitope peptide vaccination to thymidylate synthase (TSPP) and GOLFIG chemo-immunotherapy for treatment of metastatic colorectal cancer patients.

Thymidylate synthase (TS) is a tumor-associated enzyme critical for DNA replication and main 5'-fluorouracil (5'-FU) target. TSPP/VAC1 is a multi-arm trial phase-Ib trial program aimed to investigate the toxicity and biomodulatory activity of a poly-epitope-peptide vaccine to TS (TSPP) in cancer patients (pts). Here, we present the results of the TSPP/VAC1/arm C trial aimed to evaluate TSPP in combination with chemo-immunotherapy in pretreated metastatic colo-rectal cancer (mCRC) pts. Twenty-nine pts, 14 males and 15 females, received poly-chemotherapy with gemcitabine [GEM; 1,000 mg/sqm, day-1], oxaliplatin [OX; 80 mg/sqm, day-2], levofolinate [100 mg/sqm, days 1-2], bolus/infusional 5'-FU [400 mg/800 mg/sqm, days 1-2], sargramostim [50 µg, days 3-7/q30], and interleukin-2 [sc. 0.5 MIU twice a day, days 8-14/18-30] [GOLFIG-regimen]. Seventeen pts received sc. TSPP injections at escalating dosage [3 pts, 100 µg (DL-1); 3 pts, 200 µg (DL-2) and 11pts, 300 µg (DL-3)] one week after each chemotherapy cycle (concomitant module), while 10 out 12 pts received TSPP (300 µg) after 12 GOLFIG courses [dose level (DL)-0] (sequential module). TSPP MTD was not achieved. Adverse events consisted in swelling/erythema at injection sites (17 cases), G1-2 haematological (16 cases) and gastro-enteric events (12), fever, rhinitis, conjunctivitis, and poly-arthralgia and rise in auto-antibodies [ANA, ENA, c-ANCA, p-ANCA in the DL1-3 pts]. Both treatment-modules showed immunomodulating and antitumor activity (disease-control-rate, DL1-3 and DL0 were 70.6% and 83.3%, respectively) with a better survival recorded in the second group [median OS DL1-3 vs. DL0 = 8 vs. 16 mo, p = 0.049]. The promising long-term survival produced by the sequential treatment module deserves further phase II evaluation.

The Emerging Role of Bradykinin in the Pathogenesis of Osteoarthritis and its Possible Clinical Implications.

Osteoarthritis (OA) is a multifaceted disorder defined by the alteration of homeostasis and degradation in articular cartilage. Recently mounting evidence suggests that OA should be conceived as an inflammatory disease rather than a simple wear-and-tear problem. Bradykinin (BK) and B2 receptors play a role in the pathogenesis of OA. The aim of this paper is to analyze preclinical and clinical studies examining the potential role of BK and of B2 receptor blockade in OA pathogenesis. We analyzed the data about the effects of BK in synoviocytes, endothelial cells and chondrocytes cultures and described the action of B2 receptor antagonists (Icatibant and Fasitibant). In conclusion, the BK is an endogenous proinflammatory molecule that is involved in the pathophysiology of OA, and B2 receptor antagonists are believed to be considered as a potential symptomatic therapy for this disease. There is a need for further preclinical and clinical trials to better explain the mechanisms of action and the efficacy and tolerability of the B2 receptor antagonists in OA.

Intravenous immunoglobulins and antiphospholipid syndrome: How, when and why? A review of the literature.

The antiphospholipid syndrome (APS) is defined by the occurrence of venous and arterial thromboses and recurrent fetal losses, frequently accompanied by a moderate thrombocytopenia, in the presence of antiphospholipid antibodies (aPL), namely lupus anticoagulant (LA), anticardiolipin antibodies (aCL), or anti-ß2 glycoprotein-I (ß2GPI) antibodies. The current mainstay of treatment for thrombotic APS is heparin followed by long-term anticoagulation, while in obstetric APS, the accepted first-line treatment consists in low-dose aspirin (LDA) plus prophylactic unfractionated or low-molecular-weight heparin (LMWH). Recently, new emerging treatment modalities, including intravenous immunoglobulins (IVIG), have been implemented to manage APS refractory to conventional therapy. The objective of this review is to summarize the currently available information on the IVIG therapy in APS, focusing on the use of IVIG in the obstetric form, CAPS and on primary or secondary thromboprophylaxis. We analyzed 35 studies, reporting the effects of IVIG in APS patients, and we discussed their results. IVIG in obstetric APS seem to be very useful in selected situations (patients not responsive to the conventional treatment, concomitant autoimmune manifestations or infections or patients in whom anticoagulation is contraindicated). IVIG treatment represents an important component of the combination therapy of CAPS and they could be useful, in addition to the standard therapy, to prevent recurrent thrombosis in APS patients refractory to conventional anticoagulant treatment. Anyway, in some cases we also found controversial results that claim the need of further well-designed studies to definitely state the efficacy and tolerability of IVIG in CAPS, obstetric and non-APS.

Phase I trial of thymidylate synthase poly-epitope peptide (TSPP) vaccine in advanced cancer patients.

Thymidylate synthase (TS) poly-epitope peptide (TSPP) is a 27-mer peptide vaccine containing the amino acidic sequences of three epitopes with HLA-A2.1-binding motifs of TS, an enzyme overexpressed in cancer cells, which plays a crucial role in DNA repair and replication. Based on the results of preclinical studies, we designed a phase Ib trial (TSPP/VAC1) to investigate, in a dose escalation setting, the safety and the biological activity of TSPP vaccination alone (arm A) or in combination with GM-CSF and IL-2 (arm B) in cancer patients. Twenty-one pretreated metastatic cancer patients, with a good performance status (ECOG ≤ 1) and no severe organ failure or immunological disease, were enrolled in the study (12 in arm A, nine in arm B) between April 2011 and January 2012, with a median follow-up of 28 months. TSPP resulted safe, and its maximal tolerated dose was not achieved. No grade 4 toxicity was observed. The most common adverse events were grade 2 dermatological reactions to the vaccine injection, cough, rhinitis, fever, poly-arthralgia, gastro-enteric symptoms and, to a lesser extent, moderate hypertension and hypothyroidism. We detected a significant rise in auto-antibodies and TS-epitope-specific CTL precursors. Furthermore, TSPP showed antitumor activity in this group of pretreated patients; indeed, we recorded one partial response and seven disease stabilizations (SD) in arm A, and three SD in arm B. Taken together, our findings provide the framework for the evaluation of the TSPP anti-tumor activity in further disease-oriented clinical trials.

Granulomatosis with polyangiitis and intravenous immunoglobulins: a case series and review of the literature.

Granulomatosis with polyangiitis, formerly known as Wegener's granulomatosis or disease, is a systemic, necrotizing small-vessel vasculitis, belonging to the group of anti-neutrophil cytoplasm antibody vasculitis. The therapeutic strategy includes, in most cases, corticosteroids associated, at least in severe forms of the disease, with immunosuppressive agents: cyclophosphamide and rituximab to induce remission, methotrexate, azathioprine and mycophenolate mofetil to prevent relapses. Intravenous immunoglobulins represent an alternative adjuvant therapy. We described 5 cases of patients with granulomatosis with polyangiitis treated with monthly high-dose intravenous immunoglobulins (500mg/kg/daily for 3 consecutive days for 9months). No patients experienced adverse reactions, and 4 patients (80%) achieved a complete remission after 9 courses of this therapy, which was maintained also 3months later, although we are unable to determine whether improvement in outcomes was a direct result of the IVIG. We also discussed the beneficial effects of intravenous immunoglobulins in patients suffering from granulomatosis with polyangiitis, reporting the previously published data.

What about strontium ranelate in osteoarthritis? Doubts and securities.

Abstract Osteoarthritis (OA) is the most common disabling joint disease worldwide and its treatment is based on a combination of non-pharmacological and pharmacological modalities. Commonly prescribed OA medications include symptomatic drugs (non-steroidal anti-inflammatory drugs, analgesics, locally administered corticosteroids, viscosupplementation) and new compounds that are potentially able to reduce or stop the disease progression, called "Disease Modifying Osteoarthritis Drugs (DMOADs)". Strontium ranelate (SR) is an anti-osteoporotic treatment that increases bone formation, while decreasing bone resorption and it potentially acts as a new DMOAD. The objective of this review is to summarize the currently available information on clinical effects and mechanism of action of SR in OA. We have examined two post hoc analysis conducted on the large, randomized Treatment of Peripheral Osteoporosis study and the double-blind, randomized, controlled trial about SR in knee OA. Furthermore, we analyzed three studies in animal models and two in vitro experiments to better understand the mechanism of action of SR in OA. The available data demonstrate that SR could be considered a new promising symptomatic and disease-modifying agent in the treatment of OA and was safe and well tolerated. Additionally, there is a need for further investigations to establish the optimal dosage and to better clarify the mechanism of action of SR in OA.

Nailfold capillaroscopy in Buerger's disease: A useful tool?

Thromboangiitis obliterans (TAO, or Buerger's disease) is a rare inflammatory vasculitis that commonly involves small and medium-sized arteries of the extremities of tobacco smokers between the ages of 25 and 50 years. Although the diagnosis is based on the clinical picture and angiographic findings, we studied the microvascular involvement by nailfold capillaroscopy. We evaluated by nailfold capillaroscopy 2 patients with Buerger's disease, at baseline and after 6 months of tobacco discontinuation and therapy with prostanoids. Both patients presented similar capillaroscopic abnormalities, resembling a scleroderma-like pattern. The microvascular rearrangement was significantly reduced after 6 months of evaluation. The capillaroscopic abnormalities shown in the two patients could be related to thromboangiitis obliterans, and nailfold capillaroscopy could be a useful tool to evaluate disease progression and the response to treatment.