Differences in autoimmune hepatitis based on inflammation localization

Atsushi Takahashi, Hiromasa Ohira, Kazumichi Abe, Mikio Zeniya, Masanori Abe, Teruko Arinaga-Hino, Takuji Torimura, Kaname Yoshizawa, Akinobu Takaki, Jong Hon Kang, Yoshiyuki Suzuki, Nobuhiro Nakamoto, Ayano Inui, Atsushi Tanaka, Hajime Takikawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Histopathology is essential for the diagnosis and evaluation of disease activity of autoimmune hepatitis (AIH). We aimed to elucidate the characteristics of AIH from the localization of inflammation. We re-evaluated a nationwide survey that was performed in Japan in 2018 of AIH patients diagnosed between 2014 and 2017. A total of 303 patients were enrolled, and the clinical and treatment characteristics were compared between the patients with predominantly portal inflammation (230 patients) or lobular inflammation (73 patients). AIH patients with lobular inflammation had a higher probability of being diagnosed with acute hepatitis than those with portal inflammation. Liver enzyme levels were higher in patients with lobular inflammation, whereas immunoglobulin G levels were higher in patients with portal inflammation. The prevalence of an alanine aminotransferase level < 30 U/L after 6 months of treatment was significantly higher in patients with lobular inflammation than in those with portal inflammation (81.7% vs. 67.3%, P = 0.046). The localization of inflammation may be useful for evaluating the onset of AIH.

Original languageEnglish
Pages (from-to)8-13
Number of pages6
JournalMedical Molecular Morphology
Issue number1
Publication statusPublished - Mar 2021


  • Acute hepatitis
  • Autoimmune hepatitis
  • Lobular inflammation
  • Portal inflammation
  • Treatment

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Molecular Biology


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