{"title":"Metabolomic signaling in sarcoidosis pathogenesis","authors":"Humphrey Lotana, Tristan White, Wonder Puryear Drake","doi":"10.1016/j.coi.2025.102715","DOIUrl":"10.1016/j.coi.2025.102715","url":null,"abstract":"<div><div>Sarcoidosis is a multisystem inflammatory disorder characterized by noncaseating granulomas in various organs, predominantly affecting the lungs and lymphatic system. Although the etiology of sarcoidosis remains unknown, it is believed to result from an abnormal immune response triggered by environmental agents in a genetically susceptible host. The disease also has a variation in clinical outcome, with some patients spontaneously resolving their disease, while others experience disease progression. Pulmonary sarcoidosis, the most prevalent form, can progressively lead to pulmonary fibrosis, which may result in organ impairment and respiratory failure. Cellular metabolism has been implicated in numerous chronic lung diseases, making the characterization of metabolic profiles a promising approach for prognosis. A limited number of studies have examined the metabolomic profiles of sarcoidosis patients to identify key metabolites that contribute to disease progression. This review will focus on the current state of metabolomics in understanding sarcoidosis pathogenesis.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102715"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vivienne Kahlmann , Donald Simon , Marlies S Wijsenbeek , Catharina C Moor
{"title":"Optimizing patient-reported outcomes for sarcoidosis","authors":"Vivienne Kahlmann , Donald Simon , Marlies S Wijsenbeek , Catharina C Moor","doi":"10.1016/j.coi.2025.102720","DOIUrl":"10.1016/j.coi.2025.102720","url":null,"abstract":"<div><div>Patients with sarcoidosis can present with a wide range of symptoms that impact their quality of life (QoL). QoL represents one of the most important treatment priorities for patients. Therefore, measuring what matters to patients is of great importance, though it can be challenging due to the diverse presentation of the disease. Patient-reported outcome measures (PROMs) are designed to assess patients’ subjective symptoms and their impact on their lives. Over the past decade, PROMS have been increasingly used in clinical trials and daily practice. In this review, we will provide an overview of frequently used generic- and disease-specific PROMS in the field op sarcoidosis. We summarize their psychometric properties and discuss limitations and future opportunities.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102720"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rheumatoid arthritis: revisiting pathogenesis for prevention, stratification, and repair","authors":"Frédéric Coutant , Pierre Miossec","doi":"10.1016/j.coi.2026.102735","DOIUrl":"10.1016/j.coi.2026.102735","url":null,"abstract":"<div><div>The clinical heterogeneity of rheumatoid arthritis (RA) reflects a series of dynamic immunological imbalances rather than a single dominant mechanism. In this review, we propose that RA progression is best understood as a sequence of three functional balances. The first contrasts pathogenic and protective autoantibody functions, determining whether systemic autoimmunity remains subclinical or evolves into inflammatory disease. The second opposes cytokine-driven inflammation to autoantibody-mediated cytokine regulation, including neutralization or facilitation, thereby shaping the intensity and therapeutic responsiveness of synovitis. The third and ultimate balance opposes stromal persistence to tissue repair and dictates structural outcome, even when inflammation appears clinically controlled. By reinterpreting key immunological mechanisms through this framework, we clarify why clinical remission may not prevent joint damage, why functional properties of autoantibodies matter beyond antigen specificity, and why tissue context must be integrated into therapeutic strategies. This tripartite model repositions RA as a disease of evolving equilibria, with implications for prevention, precision stratification, and the restoration of immune–stromal homeostasis.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102735"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146183890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cell death pathways in graft-versus-host disease","authors":"Allison Pugel , Xue-Zhong Yu , Yongxia Wu","doi":"10.1016/j.coi.2026.102740","DOIUrl":"10.1016/j.coi.2026.102740","url":null,"abstract":"<div><div>Regulated cell death, including apoptosis, necroptosis, and pyroptosis, as well as cell death arising from disrupted cellular homeostasis, such as ferroptosis and dysregulated autophagy, is implicated in cancer, autoimmunity, and transplantation biology. Graft-versus-host disease (GVHD), a major cause of morbidity and mortality after allogeneic hematopoietic cell transplantation, is driven by donor T-cell recognition of host alloantigens and effector response, leading to extensive tissue injury. Apoptotic pathways have been well studied in GVHD, and targeting apoptosis has shown therapeutic benefit. Emerging forms of cell death are now recognized to regulate immune and non-immune cells, providing new mechanistic insights into GVHD. Manipulating these pathways offers opportunities to alleviate GVHD through eliminating pathogenic alloreactive T cells or enhancing the survival of protective cell populations, such as regulatory T cells, innate lymphoid cells, and intestinal epithelial cells. We summarize recent advances on how diverse cell death pathways shape GVHD pathogenesis and their therapeutic implications.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102740"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiple sclerosis: a disease or a syndrome?","authors":"Ayse Altintas , Eser Bulus","doi":"10.1016/j.coi.2026.102736","DOIUrl":"10.1016/j.coi.2026.102736","url":null,"abstract":"<div><div>Multiple sclerosis (MS) is traditionally considered a chronic immune-mediated disease of the central nervous system. However, increasing evidence suggests substantial clinical, radiological, and immunopathological heterogeneity among individuals diagnosed with MS. In recent years, increasing awareness of this heterogeneity has led to a re-evaluation of whether MS represents a single disease entity or a constellation of related yet distinct pathological processes manifesting as a syndrome. This review explores the argument that MS may not represent a single disease entity but rather a syndrome encompassing multiple distinct immunopathological processes. By integrating evidence from diverse clinical phenotypes, radiological signatures, and neuro-immunopathogenic mechanisms, we aim to explore whether MS should be reconsidered and conceptualized as a syndromic entity.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102736"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ogugua N Obi , Elizabeth V Arkema , Yvette C Cozier
{"title":"Patterns and trends in sarcoidosis: an epidemiological perspective","authors":"Ogugua N Obi , Elizabeth V Arkema , Yvette C Cozier","doi":"10.1016/j.coi.2025.102723","DOIUrl":"10.1016/j.coi.2025.102723","url":null,"abstract":"<div><div>The incidence, prevalence, and burden of sarcoidosis is increasing worldwide. The Nordic countries have the highest incidence with lowest rates reported in Asia. In the United States, Black females have the highest incidence and prevalence of disease.</div><div>The phenotypic manifestations of sarcoidosis vary by race, age, gender, and geography. Historically, a female predominant pattern of disease occurrence has been widely reported, however, this is not a universal finding, and recent studies suggest an increasing incidence of disease in males. Though previously thought to be a disease of young adults, recent data shows the average age of diagnosis is now over 50 years with increasing incidence of disease reported in older adults (age >65 years).</div><div>Historical trends of disease occurrence, familial patterns and trends of disease presentation, environmental and seasonal clustering of disease, and recent trends in morbidity, co-morbidity, and mortality of sarcoidosis are discussed in this review.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102723"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Martha C Faraguna , Viola Crescitelli , Sonia Bonanomi , Gaia A Kullmann , Maria L Boffi , Roberta Pretese , Giulia Risca , Lucia M Tedesco , Katia Pozzi , Marta Serafini , Johanna MP van den Hout , Ans T van der Ploeg , Adriana C Balduzzi , Serena Gasperini
{"title":"A comprehensive study on the effect of alglucosidase alpha and immunomodulation on survival, motor and cardiac outcome, creatine kinase and antibody titers in classic infantile Pompe disease: the Monza experience","authors":"Martha C Faraguna , Viola Crescitelli , Sonia Bonanomi , Gaia A Kullmann , Maria L Boffi , Roberta Pretese , Giulia Risca , Lucia M Tedesco , Katia Pozzi , Marta Serafini , Johanna MP van den Hout , Ans T van der Ploeg , Adriana C Balduzzi , Serena Gasperini","doi":"10.1016/j.coi.2026.102725","DOIUrl":"10.1016/j.coi.2026.102725","url":null,"abstract":"<div><div>We report on 13 classic infantile Pompe patients, including four cross-reactive immunological material negative (31%), treated with alglucosidase alpha (rhGAA) at Fondazione IRCCS San Gerardo, Monza, between 2003 and 2024. Median age at rhGAA initiation was 3.3 months, with nine patients (69%) starting on doses > 20 mg/kg/every other week. With a median follow-up of 6.9 years, the 5- and 10-year survival was 92%. Four patients died, and three became ventilator-dependent. Hypertrophic cardiomyopathy normalized in all patients, though electrocardiogram abnormalities persisted in 36%. Walking was achieved by 10 (77%). Ten patients received immune tolerance induction (77%, five primary, two secondary, three both), and seven received long-term sirolimus. Nine developed anti-rhGAA, of whom five (38%) had high-sustained antibody titers (HSAT). All had elevated creatine kinase at diagnosis; creatine phosphokinase normalized over time in four patients on 40 mg/kg/week since start without HSAT. This study offers real-world insight into managing classic infantile Pompe disease and compares the cohort’s outcome to international experiences.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102725"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The role of stromal cell immunobiology in understanding and managing Sjögren’s disease","authors":"Valeria Manfrè , Luca Quartuccio , Sara S McCoy","doi":"10.1016/j.coi.2025.102714","DOIUrl":"10.1016/j.coi.2025.102714","url":null,"abstract":"<div><div>Sjögren’s disease (SjD) is a systemic, heterogeneous autoimmune disorder, clinically dominated by dryness symptoms resulting from inflammatory infiltration of exocrine glands. To date, no validated and resolutive therapeutic strategies are available. Stromal cells are increasingly recognized as critical players in SjD pathogenesis. Distinct fibroblast subsets, termed ‘immunofibroblasts’, may contribute to tertiary lymphoid structure development and fibrotic tissue remodeling, while sustaining local immune infiltration, thereby representing potential treatment targets. In parallel, mesenchymal stromal cells (MSCs) may represent a therapeutic tool, due to their immunomodulatory and trophic properties demonstrated <em>in vitro</em> and in animal models. These favorable results have prompted early-phase clinical trials using MSCs, which demonstrated preliminary safety and efficacy on salivary and ocular outcomes. Nonetheless, methodological limitations require cautious interpretation of available data, and further investigation of clinical applications is warranted. Stromal cell biology thus offers both mechanistic insight and therapeutic promise, warranting further investigation in rigorously designed randomized controlled trials.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102714"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Elderly-onset rheumatoid arthritis as a distinct entity: mechanisms, manifestations, and treatment","authors":"Shiliang Ma , Xinran Wu , Xuan Zhang, Ketian Li","doi":"10.1016/j.coi.2025.102721","DOIUrl":"10.1016/j.coi.2025.102721","url":null,"abstract":"<div><div>Elderly-onset rheumatoid arthritis (EORA), defined as onset at ≥60 years, is a clinically distinct and increasingly prevalent subset of rheumatoid arthritis (RA). This review synthesizes evidence that EORA is not merely late-onset RA but a pathogenically unique entity, driven by immune aging, inflammaging, and other mechanisms like defective immunosuppressive system, age-related somatic mosaicism, and dysbiosis. It frequently presents with heterogeneous features such as acute large-joint involvement and polymyalgia symptoms, often leading to diagnostic delays. Despite similar initial activity to young-onset RA, EORA follows a more aggressive course with severe joint destruction and significant comorbidities. Treatment with conventional disease-modifying antirheumatic drugs is complicated by polypharmacy and high adverse event risks, often leading to undertreatment. A shift to geriatric-centered care, with comprehensive assessment and tailored treat-to-target strategies, is therefore imperative. This review underscores the need to recognize EORA's unique pathophysiology and clinical profile to improve diagnosis, therapy, and outcomes for this growing population.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102721"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Soumba Traore , Sophia C Chima , Kristina M Adams Waldorf , Jennifer Tisoncik-Go , Megan A O’Connor
{"title":"Evaluating the pandemic potential of Zika virus in a changing global landscape","authors":"Soumba Traore , Sophia C Chima , Kristina M Adams Waldorf , Jennifer Tisoncik-Go , Megan A O’Connor","doi":"10.1016/j.coi.2026.102724","DOIUrl":"10.1016/j.coi.2026.102724","url":null,"abstract":"<div><div>As of 2024, the World Health Organization declared the Zika virus (ZIKV), an emerging flavivirus, as a high-priority pathogen with the potential to cause future Public Health Emergencies of International Concern. Although the last major outbreak of ZIKV occurred in 2015–2016, ongoing ‘silent’ transmission in the Americas, Asia, and Africa indicates that ZIKV remains a global threat. Recent research highlights possible reintroduction of ZIKV into sylvatic reservoirs, identifies mosquito immune cells essential for viral dissemination, uncovers viral protein mutations that affect neurovirulence, and examines how cross-reactive flavivirus immunity shapes disease outcomes. Despite these advances, major challenges persist in surveillance, diagnosis, and the development of effective vaccines or therapeutics. This review synthesizes current knowledge on the global burden of ZIKV, transmission dynamics, and adaptive evolution, emphasizing factors that drive its epidemic potential. Continued research and a One Health approach are crucial to improve understanding of ZIKV biology and strengthen preparedness for future outbreaks.</div></div>","PeriodicalId":11361,"journal":{"name":"Current Opinion in Immunology","volume":"99 ","pages":"Article 102724"},"PeriodicalIF":5.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}