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ArticleFrontiers in immunology2026

Beyond hepatitis C: clinical spectrum and demographic characteristics of anti-rods and rings antibodies in a large ANA-positive cohort.

Pingping Wang, Shiji Wu, Jingting Liu, Jianying Pei, Chong Zhang, Xing Chen, Xiang Zhang, Yun Wang

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Article in Frontiers in immunology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Pingping WangClinical Laboratory Center, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, China.
Shiji WuDepartment of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Jingting LiuClinical Laboratory Center, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, China.
Jianying PeiClinical Laboratory Center, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, China.
Chong ZhangClinical Laboratory Center, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, China.
Xing ChenDepartment of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Xiang ZhangDepartment of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Yun WangDepartment of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The anti-rods and rings (anti-RR) pattern (AC-23) is traditionally associated with Hepatitis C Virus (HCV) infection and interferon therapy. However, emerging evidence suggests a broader clinical spectrum. This study aims to characterize the clinical associations, demographic shifts, and pattern complexity of anti-RR antibodies in a single-center retrospective study. Methods: A retrospective analysis was conducted on anti-RR-positive individuals identified from both the clinical cohort and the routine health checkup cohort. Clinical data, including disease categories, age, gender, concurrent ANA patterns, and antibody titers, were systematically evaluated. Results: Our findings demonstrate a heterogeneous clinical distribution of the anti-RR (AC-23) pattern across disease categories. Within the infectious disease group, hepatitis B virus (HBV) accounted for the largest proportion (36.59%), followed by hepatitis C virus (HCV) (24.39%), with a male predominance (M:F = 2.4:1, p<0.05). Among systemic autoimmune diseases, rheumatoid arthritis (RA) was the most frequently observed condition (25.64%), followed by connective tissue diseases (CTD) and autoimmune liver diseases (AIH/PBC). A distinct age- and sex-related distribution was observed, with higher frequencies in females aged 19-45 years, whereas a higher frequency was observed in males aged >65 years within the clinical cohort (p=0.045). Overall, anti-RR antibodies were predominantly detected at low titers (1:100-1:320). In addition, multiple immunofluorescence patterns, particularly speckled patterns, were more frequently observed in patients with autoimmune diseases, whereas isolated anti-RR patterns were more commonly identified in the routine health checkup cohort. Conclusion: Anti-RR represents a distinct ANA pattern associated with a broad clinical spectrum in the Chinese population, extending significantly beyond HCV to include HBV infection and various non-infectious conditions. The diverse clinical associations and the predominance of low-to-moderate titers suggest that anti-RR should be interpreted as a general indicator of systemic immune involvement rather than a specific disease marker. Clinical management should prioritize comprehensive evaluation based on the individual's context rather than relying on anti-RR for specific disease screening.

Indexed as

Antibodies, AntinuclearAutoimmune DiseasesHepatitis CAdultAgedFemaleHepacivirusHumansMaleMiddle AgedRetrospective StudiesYoung AdultAntibodies, Antinuclearantinuclear antibodies (ANAs)anti-rods and rings (anti-RR)autoimmune diseasesinfectious diseasesmetabolism

Identifiers

PMID42317373
PMCPMC13272418

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