Primary Sjögren Syndrome

A single arm, open-label pilot study is designed to determine the safety and effectiveness of anti-CD19/BCMA U CAR T cells in patients with autoimmune diseases. 60 patients are planned to be enrolled in the dose-escalation trial.

BACKGROUND Sjögren's syndrome is an autoimmune disease whose prevalence is estimated between 200 and 500 patients per 100,000 persons in France (120 to 500,000 patients). It affects women (90%) between 40 and 60 years of age and main manifestations are generalized sicca syndrome (ocular, oral, cutaneous) and arthralgia. In 20% of cases, Sjögren's syndrome is associated with peripheral neuropathies, and the most common form is painful small fiber neuropathy (SFN). SFNs are mainly featured by neuropathic pain including burns (90%), numbness (87.5%), tingling (72.5%), electric shocks (70%) and tingling (82.5%) and also autonomic disorders (50 to 70%). However, there are still important issues that deserve to be investigated by clinical and basic research. Among these issues, this study will focus on: * The impact of SFN on the quality of life of patients with Sjögren's syndrome. * The medico-economic impact of the SFN taking into account the repercussions on the quality of life, including professional life, usual care cost (analgesics, medical and paramedical consultations, hospitalizations or emergency). EXPECTED RESULTS * Confirmation of the major impairment in the quality of life of patients with Sjogren-associated SFN * Analysis of correlations to highlight or not clinical or biological factors associated with quality of life impairment. * Evaluation of the cost attributed to the presence of an SFN in patients with Sjögren's syndrome and the pharmaco-economic interest of conventional therapeutic management (analgesic treatment, consultation pain) compared to the cost of more aggressive immunomodulatory treatments.

This is a multicenter, randomized, double-blind, placebo-controlled Phase II study designed to evaluate the efficacy and safety of ESG206 in participants with primary Sjögren's syndrome.

Primary Sjögren's syndrome (pSS) is a chronic autoimmune exocrinopathy characterized by lymphocytic infiltration, progressive destruction of salivary gland acini, and varying degrees of functional impairment and fibrosis. Conventional imaging provides limited ability to simultaneously evaluate glandular function and inflammatory activity, leading to challenges in disease staging and treatment decision-making. This study explores a conceptual dual-tracer imaging framework using PSMA PET and FAPI PET to delineate complementary biological processes in pSS.

The goal of this clinical study is to learn if RSLV-132 improves the symptoms of SS in adults. It will also learn about the safety of RSLV-132. The main questions it aims to answer are: * Does RSLV-132 improve the cardinal symptoms of Sjogren's including fatigue, dryness and pain? * Does RSLV-132 improve the tiredness/fatigue caused by Sjogren's? * What are the blood levels of RSLV-132 over time? * What is the immune (antibody) response in the body to RSLV-132? * What is the safety profile of RSLV-132? Researchers will compare RSLV-132 to a placebo (a look-alike substance that contains no drug) to see if RSLV-132 improves the symptoms of pSS. Participants will: Take RSLV-132 or a placebo 13 times over 22 weeks Visit the clinic once every week for the first 2 weeks, then every 2 weeks until the end of treatment and then for a final time 4 weeks later (Day 211) for check-ups, tests and to answer questionnaires about their symptoms Record their symptoms every day on an electronic device

This study aims to establish a large sample cohort of patients with primary sjogren's syndrome, collect multi-omics information of patients with primary sjogren's syndrome, and construct disease diagnosis model and disease prognosis prediction model.