Cited by 79Liver Diseases and ImmunityPediatric Hepatobiliary Diseases and TreatmentsIgG4-Related and Inflammatory Diseases

Overcoming a “Probable” Diagnosis in Antimitochondrial Antibody Negative Primary Biliary Cirrhosis: Study of 100 Sera and Review of the Literature

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Bizzaro, Nicola, Covini, Giovanni, Rosina, Floriano, Muratori, Paolo, Tonutti, Elio, Villalta, Danilo, Pesente, Fiorenza, Alessio, Maria Grazia +16 more·2012·Clinical Reviews in Allergy & Immunology

Abstract

Serum anti-mitochondrial antibodies (AMA) are the serological hallmark of primary biliary cirrhosis (PBC), yet up to 15% of PBC sera are AMA negative at routine indirect immunofluorescence (IIF) while being referred to as "probable" cases. The diagnostic role of PBC-specific antinuclear antibodies (ANA) remains to be determined. We will report herein data on the accuracy of new laboratory tools for AMA and PBC-specific ANA in a large series of PBC sera that were AMA-negative at IIF. We will also provide a discussion of the history and current status of AMA detection methods. We included IIF AMA-negative PBC sera (n=100) and sera from patients with other chronic liver diseases (n=104) that had been independently tested for IIF AMA and ANA; sera were blindly tested with an ELISA PBC screening test including two ANA (gp210, sp100) and a triple (pMIT3) AMA recombinant antigens. Among IIF AMA-negative sera, 43/100 (43%) manifested reactivity using the PBC screening test. The same test was positive for 6/104 (5.8%) control sera. IIF AMA-negative/PBC screen-positive sera reacted against pMIT3 (11/43), gp210 (8/43), Sp100 (17/43), both pMIT3 and gp210 (1/43), or both pMIT3 and Sp100 (6/43). Concordance rates between the ANA pattern on HEp-2 cells and specific Sp100 and gp210 ELISA results in AMA-negative subjects were 92% for nuclear dots and Sp100 and 99% for nuclear rim and gp210. Our data confirm the hypothesis that a substantial part of IIF AMA-negative (formerly coined "probable") PBC cases manifest disease-specific autoantibodies when tested using newly available tools and thus overcome the previously suggested diagnostic classification. As suggested by the recent literature, we are convinced that the proportion of AMA-negative PBC cases will be significantly minimized by the use of new laboratory methods and recombinant antigens.

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Crossref · 10.1007/s12016-010-8234-y

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  • The majority of AMA-negative patients will be positive for PBC-specific nuclear antibodies.

    “The majority of these patients will be positive for the PBC-specific nuclear antibodies.265”

    From The British Society of Gastroenterology/UK-PBC primary biliary cholangitis treatment and management guidelines (2018) · cites this paper as [265]

    The indexed study summary (no page supplied) reports that 43 of 100 AMA-negative PBC sera reacted to a screening test that included both nuclear and mitochondrial antigens. Its antigen-specific results show PBC-specific nuclear-antibody reactivity in 32 of 100 sera, not a majority. (LLM, conf=0.88)

    Checked by a reasoning model — may be wrong.

    Experimental — accuracy not yet measured
  • Indirect immunofluorescence has the lowest sensitivity for AMA detection, with over 15% of AMA-negative sera by this method showing reactivity to MIT3.

    “The indirect immunofluorescence method has the lowest sensitivity, with over 15% of AMA-negative sera by indirect immunofluorescence showing reactivity to MIT3, a combination of three mitochondrial antigens.(87)”

    From Primary Biliary Cholangitis: 2018 Practice Guidance from the American Association for the Study of Liver Diseases (2019) · cites this paper as [87]

    The indexed copy contains an IRIS repository listing and a PDF link, but no passage from the paper addressing assay sensitivity. Searches for MIT3, indirect immunofluorescence, and the claimed 15% figure found no relevant passage, so the claim cannot be checked against our copy. (LLM, conf=0.76)

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Authors
Bizzaro, N., Covini, G., Rosina, F., Muratori, P., Tonutti, E., Villalta, D., Pesente, F., Alessio, M. G., Tampoia, M., Antico, A., Platzgummer, S., Porcelli, B., Terzuoli, L., Liguori, M., Bassetti, D., Brusca, I., Almasio, P. L., Tarantino, G., Bonaguri, C., Agostinis, P., Bredi, E., Tozzoli, R., Invernizzi, P., & Selmi, C.
Affiliations
  • IRCCS Humanitas Research Hospital (IT)
  • IRCCS Azienda Ospedliero-Universitaria di Bologna Policlinico di Sant'Orsola (IT)
  • University of Udine (IT)
  • Azienda Ospedaliera Santa Maria Degli Angeli (IT)
  • Azienda Universitaria Ospedaliera Consorziale - Policlinico Bari (IT)
  • Krankenhaus Meran (IT)
  • University of Siena (IT)
  • Azienda Ospedaliera G. Brotzu (IT)
  • Ospedale Santa Chiara (IT)
  • Ospedale Buccheri la Ferla Fatebenefratelli (IT)
  • University of Palermo (IT)
  • Ospedale di Parma (IT)
  • Ospedale di Latisana (IT)
  • University of Milan (IT)
Corresponding author
Bizzaro, Nicola
Venue
Clinical Reviews in Allergy & Immunology
Published
2010-12-29
Volume
42
Issue
3
Pages
288-297
ISSN
  • 1080-0549 (ISSN-L)
  • 1559-0267
OpenAlex
W1984613038
Cited by
79
References
74
Citations by year
2026: 6 · 2024: 2 · 2023: 9 · 2022: 3 · 2021: 7 · 2020: 8 · 2019: 3 · 2018: 5 · 2017: 4 · 2016: 7 · 2015: 4 · 2014: 6 · 2013: 5 · 2012: 9
FWCI
0.66
Type
journal article
Language
en
Open access
Locations
  • Clinical Reviews in Allergy & Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • Nova Science Publishers (Nova Science Publishers, Inc.) (submittedVersion, other-oa)
  • Use Siena air (University of Siena) (submittedVersion)
Topics
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
  • Health Sciences › Medicine › Surgery › Pediatric Hepatobiliary Diseases and Treatments
  • Health Sciences › Medicine › Rheumatology › IgG4-Related and Inflammatory Diseases
Keywords
primary biliary cirrhosis, antimitochondrial antibodies, gp210, SP-100, indirect immunofluorescence, autoantibody diagnosis, chronic liver disease, diagnostic accuracy
MeSH terms
Adult, Aged, Aged, 80 and over, Autoantibodies, Female, Humans, Liver Cirrhosis, Biliary, Male, Middle Aged, Mitochondria

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