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Open research questions in Autoimmune and Inflammatory Disorders Research

90 unresolved questions extracted from the limitations and future-work sections of 260 Autoimmune and Inflammatory Disorders Research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Retrospective study design, - Small sample size of 12 patients, - Limited to pediatric patients diagnosed with scrub typhus-associated HLH at Shenzhen Children's Hospital

    Scrub typhus triggers hemophagocytic lymphohistiocytosis in children: metagenomic next-generation sequencing enables rapid diagnosis · 2026 · DOI

  • Investigation of the pathogenesis of scrub typhus-associated HLH, - Development of more effective diagnostic tools, - Study of the clinical features and outcomes of scrub typhus-associated HLH in different populations

    Scrub typhus triggers hemophagocytic lymphohistiocytosis in children: metagenomic next-generation sequencing enables rapid diagnosis · 2026 · DOI

  • Macrophage activation syndrome (MAS) is a life-threatening hyperinflammatory complication of systemic lupus erythematosus (SLE), but its immunopathology remains poorly understood.

    Exploratory analysis of IFN-α-high and CXCL9-high cytokine distributions in systemic lupus erythematosus-associated macrophage activation syndrome · 2026 · DOI

  • However, its role as a disease activity marker in other JIA subtypes remains underexplored.

    Assessment of the serum ferritin level in patients with different subtypes of juvenile idiopathic arthritis and its association with disease activity · 2025 · DOI

  • Early administration of IL-6R blockade is effective in adult-onset Still’s disease (AOSD), but the underlying immune alterations during combined immunotherapy remain unclear.

    IL-6R blockade combined with immunosuppressants alleviates adult-onset Still’s disease through immune remodeling: a mass cytometry study · 2025 · DOI

  • Triggers include malignant neoplasm-associated hemophagocytic lymphohistiocytosis (MN-HLH), cytokine release syndrome from chimeric antigen receptor T-cell therapy (CAR-T CRS), and COVID-19, but the underlying mechanisms of inflammation and their impact on outcomes are poorly understood.

    Cytokine Storms in COVID-19, Hemophagocytic Lymphohistiocytosis, and CAR-T Therapy · 2025 · DOI

  • Immunometabolism has been an emerging hotspot in the fields of tumors, obesity, and atherosclerosis in recent decades, yet few studies have investigated its connection with rheumatoid arthritis (RA).

    Targeting dysregulated intracellular immunometabolism within synovial microenvironment in rheumatoid arthritis with natural products · 2024 · DOI

  • The diagnosis of HLH is challenging to make. The combination of CEUS and FCM offers promise for acquiring viable tissue and enabling definitive immunophenotypic analysis.

    Contrast-enhanced ultrasound-guided liver biopsy with flow cytometry analysis for the diagnosis of secondary hemophagocytic syndrome: A case report · 2026 · DOI

  • The current methods for diagnosing macrophage activation syndrome have limitations. There is a need for more accurate and reliable methods for diagnosing macrophage activation syndrome.

    Application of machine learning techniques to explore the occurrence of macrophage activation syndrome in Still’s disease: results from the GIRRCS AOSD Study Group and the AIDA Network Still’s Disease Registry · 2026 · DOI

  • Validation of the identified biomarkers in larger cohorts. Investigation of the underlying mechanisms of the metabolic disturbances in HLH.

    Elevated serum apolipoprotein B and lipoprotein remodelling distinguish adults with HLH from HLH mimics and controls · 2026 · DOI

  • The lack of in-depth serum metabolomic analysis in HLH. The need to distinguish HLH from HLH-mimics and controls.

    Elevated serum apolipoprotein B and lipoprotein remodelling distinguish adults with HLH from HLH mimics and controls · 2026 · DOI

  • Distinguishing infection from hyperinflammatory disease activity in patients with autoinflammatory diseases is challenging. The physiologic manifestations of infection may be altered by cytokine-directed therapies.

    The Silent Infection: Cytokine Blockade, Blunted Sepsis Physiology, and Soft Tissue Infection With NLRP12-Associated Autoinflammatory Syndrome · 2026 · DOI

  • Because of the rarity of the condition and variability in clinical expression, the true prevalence of NLRP12-AID remains unknown and is likely underestimated [1,3].

    The Silent Infection: Cytokine Blockade, Blunted Sepsis Physiology, and Soft Tissue Infection With NLRP12-Associated Autoinflammatory Syndrome · 2026 · DOI

  • The 'pathway defect accumulation' model is not well understood. The clinical relevance of digenic and multigenic heterozygous FHL genotypes is unclear. Ascertainment bias may affect the interpretation of genetic testing results.

    Digenic and multigenic heterozygous FHL genotypes are common but clinically silent in the general population · 2026 · DOI

  • A “pathway defect accumulation” model proposes that heterozygous variants in multiple familial hemophagocytic lymphohistiocytosis (FHL) genes (digenic or multigenic inheritance) may increase susceptibility, but its significance remains debated.

    Digenic and multigenic heterozygous FHL genotypes are common but clinically silent in the general population · 2026 · DOI

  • There is a need for increased awareness of the risk of HLH in patients treated with checkpoint inhibitors. There is a need for early recognition and treatment of HLH.

    Sintilimab-associated hemophagocytic lymphohistiocytosis: a case report · 2026 · DOI

  • There is a need for additional therapies for patients with refractory sJIA-MAS. The current treatment options for sJIA-MAS have limitations.

    Case Report: Ruxolitinib for systemic juvenile idiopathic arthritis complicated by macrophage activation syndrome: two pediatric cases and literature review · 2026 · DOI

  • The paper identifies a gap in the understanding of the clinical presentation of SAVI. The paper highlights the need for further research into the genetic and molecular mechanisms underlying SAVI.

    Case Report: Genetically primed hyperinflammation: cytomegalovirus-triggered HLH-like syndrome in an adolescent with a gain-of-function STING1 (p.Arg281Trp) variant with novel autosomal dominant inheritance and atypical presentation · 2026 · DOI

  • This case report has several important limitations. Functional assays, including IFN-b luciferase reporter activity and TBK1/IRF3 phosphorylation studies, were not performed because of resource constraints, concurrent glucocorticoid therapy, and active CMV infection, all of which could have confounded the interpretation of the results. Consequently, a definitive causal relationship cannot be established in the absence of functional validation. The findings suggest the heterozygous STING1 that p.Arg281Trp variant may act as a potential predisposing factor for CMV-triggered HLH-like hyperinflammatory disease. However, this observation should be regarded as hypothesis-generating given the lack of functional validation, absence of interferon signature testing, inability to assess subclinical pathway activation in family members, and the inherent limitations of a single-case report. Future studies involving functional assays, segregation analyses, and additional reported cases will be necessary to better define the penetrance, pathogenicity, and mechanistic role of this variant. Although paternal inheritance of the variant raises the possi- bility of incomplete penetrance, functional studies in family mem- bers could not be performed to determine whether asymptomatic carriers might exhibit subclinical interferon pathway activation. Furthermore, although phenotype-driven whole-exome sequencing did not identify additional clinically significant variants, the con- tribution of unidentified genetic modifiers cannot be com- pletely excluded. Finally, although the patient exhibited multiple clinical and laboratory features suggestive of hemophagocytic lymphohistiocytosis, a definitive diagnosis of HLH could not be confirmed because the HLH-2004 diagnostic criteria were not fully met, and bone marrow evaluation was not performed.

    Case Report: Genetically primed hyperinflammation: cytomegalovirus-triggered HLH-like syndrome in an adolescent with a gain-of-function STING1 (p.Arg281Trp) variant with novel autosomal dominant inheritance and atypical presentation · 2026 · DOI

  • Delayed diagnosis of HLH in patients with enteric fever. Limited understanding of the pathogenesis of HLH in enteric fever. Lack of recognition of HLH in patients with enteric fever.

    Secondary Hemophagocytic Lymphohistiocytosis Triggered by Enteric Fever: A Case Series from a Resource-Limited Setting · 2026 · DOI

  • There is a lack of recognition of HLH in patients with enteric fever. The true incidence of enteric fever-associated HLH is unknown.

    Secondary Hemophagocytic Lymphohistiocytosis Triggered by Enteric Fever: A Case Series from a Resource-Limited Setting · 2026 · DOI

  • The study is based on a limited number of cases (58). The paper does not provide a comprehensive review of all possible bone marrow changes associated with systemic infectious and non-infectious disorders.

    Reactive and therapy induced bone marrow changes linked to systemic infectious and non-infectious disorders including MAS/HLH report from the European association for haematopathology, Dubrovnik 2024 · 2026 · DOI

  • The paper identifies a gap in the understanding of bone marrow changes associated with systemic infectious and non-infectious disorders. The study highlights the need for further research into the diagnosis and management of these disorders.

    Reactive and therapy induced bone marrow changes linked to systemic infectious and non-infectious disorders including MAS/HLH report from the European association for haematopathology, Dubrovnik 2024 · 2026 · DOI

  • There is a lack of data on the optimal MRI protocol for children with suspected Juvenile Spondyloarthritis. The current MRI protocols may not be optimal for detecting erosions in children.

    Does adding a high-resolution 3D sequence improve the accuracy of erosion detection in pediatric sacroiliac joint MRI? · 2026 · DOI

  • The diagnosis of HLH is difficult due to its similarity to other conditions. The identification of disease-associated gene variants is challenging. The development of effective screening methods is needed.

    Genetic and molecular approaches for patients with familial hemophagocytic lymphohistiocytosis: a multi-center experience from Mexico · 2026 · DOI

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90 open questions have been extracted from the limitations and future-work passages of 260 Autoimmune and Inflammatory Disorders Research papers in our 4.5M-paper local library. Each one below links back to the study that raised it, so you can read the original claim in context.

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