Christelle Sordet

Pattern of demyelination occurring during anti-TNF-α therapy: a French national survey

OBJECTIVE To determine the pattern of demyelinating disorders (DDs) occurring during anti-TNF-α therapy. METHODS Between June 2005 and April 2008, 1800 French rheumatologists and internists were contacted to report cases of DDs occurring in patients treated with anti-TNF-α. RESULTS After a median of 10.2 (1.5-39.9) months of treatment, 33 patients developed DDs: 22 had CNS and 11 peripheral nervous system (PNS) involvement. Underlying diseases were RA (n = 16), AS (n = 11), PsA (n = 4), JIA (n = 1) and PM (n = 1). Anti-TNF-α was infliximab (n = 15), etanercept (n = 12) or adalimumab (n = 6). CNS involvement was encephalic lesions (n = 16), transverse myelitis (n = 8) or retrobulbar optic neuritis (n = 5). Cerebrospinal fluid (CSF) analysis in 16 patients and MRI in 20 patients were abnormal. All patients discontinued anti-TNF-α. Fifteen patients required steroids. Twenty patients initially improved. Five patients developed multiple sclerosis. PNS involvement was chronic (n = 9) or acute inflammatory demyelinating polyneuropathy (n = 2). CSF analysis revealed an increased protein level in nine patients. Nerve conduction studies confirmed DD in all these patients. Anti-TNF-α was discontinued in 10 patients and 8 received i.v. immunoglobulins. Two patients relapsed after introduction of another anti-TNF-α. Overall, a causal relationship between anti-TNF-α and DD was considered as probable in 31 patients and definite in 2 who had positive rechallenge. CONCLUSION Causal relationship between anti-TNF-α and induction of DD remains unclear, but in some cases the chronology of clinical events is suggestive. Nevertheless, DD might persist despite treatment discontinuation, suggesting that anti-TNF-α could trigger the demyelinating process, which further evolves independently.

Differentiation of follicular helper T cells by salivary gland epithelial cells in primary Sjögren's syndrome.

Follicular helper T cells (Tfh), which play a pivotal role in B cell activation and differentiation in lymphoid structures, secrete IL-21 whose augmented secretion is a hallmark of several autoimmune diseases. To decipher the cellular and molecular interactions occurring in salivary glands of patients suffering from primary Sjögrens syndrome (pSS), we investigated whether salivary gland epithelial cells (SGECs) were capable to induce Tfh differentiation. Co-cultures of naïve CD4(+) T cells and SGECs from both patients with pSS and controls were performed. Here, we report that IL-6 and ICOSL expression by SGECs contributes to naïve CD4(+) T differentiation into Tfh cells, as evidenced by their acquisition of a specific phenotype, characterized by Bcl-6, ICOS and CXCR5 expression and IL-21 secretion, but also but by their main functional feature: the capacity to enhance B lymphocytes survival. We demonstrated an increase of serum IL-21 with systemic activity. Finally, we analyzed the potential occurrence of a genetic association between IL-21 or IL-21R gene polymorphisms and pSS or elevated IL-21 secretion. This study, which demonstrates a direct induction of Tfh differentiation by SGECs, emphasizes a yet unknown pathogenic role of SGECs and suggests that Tfh and IL-21 might be relevant biomarkers and/or therapeutic targets in primary Sjögrens syndrome.

Characteristics and survival of 26 patients with paraneoplastic arthritis

Objective: To date, only a few series of patients with paraneoplastic arthritis have been published. The charts of patients with cancer-associated arthritis were collected in order to describe characteristics of this rheumatism. Methods: A questionnaire was created for this study and validated by experts based on specific criteria of inclusion and exclusion. Histology of neoplasia was included. Results: In all, 16 males and 10 females with a mean (range) age of 57.5 years (28–85) were recruited from 17 nationwide centres in France. Patients presented with symmetric polyarthritis involving wrists and hands (85%) and extra-articular symptoms were frequent (84%). There was no specific biologic or radiographic feature. The mean (range) delay between the diagnosis of rheumatism and neoplasia was 3.6 months (0–21.2). Tumours were usually diagnosed after articular symptoms occurred (88.5%). Twenty patients had a solid cancer, and six a haematological malignancy. Adenocarcinoma of the lungs was the most frequent type of solid cancer (60%). Tumours were diagnosed at an early stage, which may explain the good median survival of 1.21 years (range 0.64–present) with a mean follow-up of 1.9 years (range 0.16–10). The percentage of articular symptoms resolution was significantly higher in patients with solid tumours, as compared to patients with haemopathy (p = 0.007). In cases of tumour relapse, rheumatic symptoms did not recur for 75% of patients. Conclusions: Underlying neoplasia should be considered in male patients with new onset polyarthritis, smokers, and particularly in patients chronically ill. Additional investigations should then be performed to diagnose cancer at an early stage.

No evidence for an association between the -871 T/C promoter polymorphism in the B-cell-activating factor gene and primary Sjögren's syndrome.

Polyclonal B cell activation might be related to pathogenic over-expression of B-cell-activating factor (BAFF) in primary Sjögrens syndrome (pSS) and other autoimmune diseases. We therefore investigated whether BAFF over-expression in pSS could be a primary, genetically determined event that leads to the disease. The complete BAFF gene was sequenced in Caucasian pSS patients and control individuals. The only single nucleotide polymorphism frequently observed, namely -871 T/C in the promoter region, was then genotyped in 162 French patients with pSS and 90 French control individuals. No significant differences in allele (T allele frequency: 49.7% in patients with pSS versus 50% in controls; P = 0.94) and genotype frequencies of BAFF polymorphism were detected between pSS patients and control individuals. BAFF gene polymorphism was not associated with a specific pattern of antibody secretion either. T allele carriers had significantly increased BAFF protein serum levels (mean values of 8.6 and 5.7 ng/ml in patients with TT and TC genotypes, respectively, versus 3.3 ng/ml in patients with CC genotype; P = 0.01), although no correlation was observed between BAFF polymorphism and mRNA level. In conclusion, BAFF gene polymorphism is neither involved in genetic predisposition to pSS nor associated with a specific pattern of antibody production.

Experience of intravenous immunoglobulin therapy in neuropathy associated with primary Sjögren's syndrome: A national multicentric retrospective study

Sjögrens syndrome (SS)–related peripheral neuropathy is responsible for disability, but no treatment has been shown to improve its outcome. In some cases, intravenous immunoglobulin (IVIG) therapy has been associated with some benefit. In this study, we investigated the effectiveness of IVIG in SS‐related peripheral neuropathy.

Safety of rituximab in rheumatoid arthritis patients with a history of severe or recurrent bacterial infection: Observational study of 30 cases in everyday practice

OBJECTIVES To report our experience with rituximab therapy in patients with rheumatoid arthritis (RA) and a history of severe or recurrent bacterial infections. PATIENTS AND METHODS Retrospective observational study in five rheumatology departments experienced in the use of biotherapies. Patients were included if they had RA and a history of severe or recurrent bacterial infection (requiring admission and/or intravenous antimicrobial therapy) that contraindicated the introduction or continuation of TNFalpha antagonist therapy. RESULTS Of 161 RA patients given rituximab in the five study centers, 30 met the inclusion criteria, 23 females and seven males with a mean age of 58.4+/-11.8 years and a mean disease duration of 11.4+/-13.9 years. Among them, 22 had rheumatoid factors and 21 had received TNFalpha antagonist therapy (one agent in 15 patients, two in five patients and three in one patient). Prior infections were as follows: septicemia, n=2; lower respiratory tract infection or lung abscess, n=12; prosthesis infection, n=3; septic arthritis, n=3; endocarditis, n=1; pyelonephritis, n=2; osteitis, n=4; and various skin infections (erysipelas, cellulitis or skin abscess), n=6. Of these 33 infections, 21 occurred during TNFalpha antagonist therapy. During rituximab therapy, all patients received concomitant glucocorticoid therapy (mean dosage, 12+/-7.9 mg/day). The number of rituximab cycles was one in 13 patients, two in seven patients and three or more in 10 patients. Mean time from the single or last serious infection and the first rituximab infusion was 20.1+/-18.7 months. Mean follow-up since the first rituximab infusion was 19.3+/-7.4 months. During follow-up, six (20%) patients experienced one infection each. Immunoglobulin levels after rituximab therapy were within the normal range. CONCLUSION Rituximab therapy was well tolerated in 24 (80%) of 30 patients with RA and a history of severe or recurrent bacterial infection. In everyday practice, rituximab therapy seems safe with regard to the recurrence of infectious episodes. However, longer follow-ups are needed.

Multicentric reticulohistiocytosis: an autoimmune systemic disease? Case report of an association with erosive rheumatoid arthritis and systemic Sjogren syndrome.

Multicentric reticulohistiocytosis is a rare, systemic, reactive histiocytic disease of unknown aetiology. Autoimmune diseases have previously been reported in association with multicentric reticulohistiocytosis, but whether this is a true association or mere coincidence is not known. Here, we report the case of a 50-year-old woman who had been diagnosed as suffering from rheumatoid arthritis (RA), four years ago with positive rheumatoid serology was evaluated for multiple asymptotic papulonodules eruption. Histopathologic examination was suggestive of multicentric reticulohistiocytosis. She developed concomitantly Sjogren syndrome with systemic manifestations. Multicentric reticulohistiocytosis may be misdiagnosed as RA, but evaluation of the time course of specific symptoms can greatly help in the correct diagnosis. The possibility of commune etiopathogeny of these affections is discussed.

Outcome of hepatitis E virus infection in patients with inflammatory arthritides treated with immunosuppressants: a French retrospective multicenter study.

AbstractThe clinical presentation and outcome of hepatitis E virus (HEV) infection in inflammatory rheumatic diseases are unknown. We aimed to investigate the severity of acute HEV infection and the risk of chronic viral replication in patients with inflammatory arthritides treated with immunosuppressive drugs.All rheumatology and internal medicine practitioners belonging to the Club Rhumatismes et Inflammation in France were sent newsletters asking for reports of HEV infection and inflammatory arthritides. Baseline characteristics of patients and the course of HEV infection were retrospectively assessed by use of a standardized questionnaire.From January 2010 to August 2013, we obtained reports of 23 cases of HEV infection in patients with rheumatoid arthritis (n = 11), axial spondyloarthritis (n = 5), psoriatic arthritis (n = 4), other types of arthritides (n = 3). Patients received methotrexate (n = 16), antitumor necrosis factor &agr; agents (n = 10), rituximab (n = 4), abatacept (n = 2), tocilizumab (n = 2), and corticosteroids (n = 10, median dose 6 mg/d, range 2–20). All had acute hepatitis: median aspartate and alanine aminotransferase levels were 679 and 1300 U/L, respectively. Eleven patients were asymptomatic, 4 had jaundice. The HEV infection diagnosis relied on positive PCR results for HEV RNA (n = 14 patients) or anti-HEV IgM positivity (n = 9). Median follow-up was 29 months (range 3–55). Treatment included discontinuation of immunosuppressants for 20 patients and ribavirin treatment for 5. Liver enzyme levels normalized and immunosuppressant therapy could be reinitiated in all patients. No chronic infection was observed.Acute HEV infection should be considered in patients with inflammatory rheumatism and elevated liver enzyme values. The outcome of HEV infection seems favorable, with no evolution to chronic hepatitis or fulminant liver failure.

Safety of biologics: elaboration and validation of a questionnaire assessing patients' self-care safety skills: the BioSecure questionnaire. An initiative of the French Rheumatology Society Therapeutic Education section.

BACKGROUND Biologics are known to entail specific risks (e.g. infections). Patients should possess self-care safety skills to develop appropriate behaviors in situations of risks (e.g. fever). To date, there is no adequate tool to assess these skills. OBJECTIVES To elaborate a questionnaire to measure knowledge and skills regarding safety issues, for patients treated by biologics. METHODS Three-step process. (1) A steering group of 10 rheumatologists, one pharmacist and two allied health professionals elaborated an exhaustive list of safety skills. Through a 3-round Delphi process involving the steering group, 14 patients on biologics and 14 other allied health professionals, the list of skills was reduced. (2) A corresponding series of questions and of clinical situations with multiple-choice answers were designed. (3) Preliminary validation was performed against the physicians opinion on skills, and reliability was assessed. RESULTS The list includes 24 skills e.g. how to deal with fever, planned surgery, dental care, travel, minor traumas, and immunizations. A 55-question questionnaire was constructed. Preliminary validation (62 patients) showed the questionnaire was filled in 10 minutes (median) and correlated to the physicians opinion of skills (R=0.47, P<0.0001) but not to disease status or disease duration. The median score was 75% (range 20%-96%). The questionnaire was reliable: intraclass correlation coefficient, 0.83 (95% CI: 0.63-0.93). CONCLUSION A simple (multiple-choice questionnaire) and valid tool investigating a core set of safety skills has been developed. This tool could be useful to detect further educational needs regarding biologics safety, and to assess the efficacy of oriented educational interventions.

Rheumatologists’ Perceptions of Biosimilar Medicines Prescription: Findings from a French Web-Based Survey

BackgroundHealthcare cost savings are closely linked to prescribers’ confidence in and acceptance of the prescription of biosimilar drugs.ObjectivesThe aim of this study was to assess the knowledge, experience and opinions of hospital-based and office-based French rheumatologists with regard to biosimilar medicines and to identify the barriers to and possible options to promote their prescription.MethodsA web-based, self-administered survey was conducted among French rheumatologists from June 8 to August 2, 2015.ResultsA total of 116 rheumatologists responded to the survey. Many reported having little knowledge and a lack of available information about biosimilar drugs, especially office-based rheumatologists. 98.3% of the respondents had at least one question about biosimilars, and seven in ten raised issues regarding substitution, iatrogenic effects or cost savings that might be achievable. Only eight rheumatologists had already prescribed a biosimilar drug. The most common barriers reported were indication extrapolation and a lack of data about tolerability. Nine out of ten physicians thought that starting a treatment with a biosimilar drug in biologic treatment-naïve patients was possible. The rheumatologists’ opinions were rather favorable towards the implementation of biosimilars, but a majority expressed a negative opinion about substitution by the pharmacist.ConclusionsOur survey gave a better appreciation of the concerns associated with biosimilar prescriptions. Targeted communication initiatives, deeper experience and availability of new clinical data may help to address the outstanding questions and should overcome the misunderstandings surrounding biosimilar drugs among rheumatologists.