Characteristics and treatment outcomes of isoniazid mono-resistant tuberculosis: A retrospective study

Se Hyun Kwak, Ji Soo Choi, Eun Hye Lee, Su Hwan Lee, Ah Young Leem, Sang Hoon Lee, Song Yee Kim, Kyung Soo Chung, Eun Young Kim, Ji Ye Jung, Moo Suk Park, Young Sam Kim, Joon Chang, Young Ae Kang

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Purpose: Isoniazid (INH) mono-resistant tuberculosis (Hr-TB) is a highly prevalent type of drug-resistant TB, possibly associated with unfavorable treatment outcomes. However, definitive guidelines on an optimal treatment regimen and duration for Hr-TB are currently under discussion. We evaluated the characteristics and treatment outcomes of Hr-TB patients. Materials and Methods: We retrospectively reviewed the medical records of Hr-TB patients treated at a South Korean tertiary re-ferral hospital from January 2005 to December 2018. Results: We included 195 Hr-TB patients. 113 (57.9%) were male, and the median age was 56.6 [interquartile range, 40.2–68.6] years. Mutations in katG were the most frequent [54 (56.3%)], followed by those in the inhA [34 (35.4%)]. Favorable and unfavorable outcomes were noted in 164 (84.1%) and 31 (15.9%) patients, respectively. Smoking history [odds ratio (OR)=5.606, 95% con-fidence interval (CI): 1.695–18.543, p=0.005], low albumin level (OR=0.246, 95% CI: 0.104–0.578, p=0.001), and positive acid-fast bacilli culture at 2 months (OR=7.853, 95% CI: 1.246–49.506, p=0.028) were associated with unfavorable outcomes. Conclusion: A tailored strategy targeting high-risk patients is imperative for improved treatment outcomes. Further research on the rapid and accurate detection of resistance to INH and other companion drugs is warranted.

Original languageEnglish
Pages (from-to)1034-1041
Number of pages8
JournalYonsei medical journal
Issue number12
Publication statusPublished - 2020

Bibliographical note

Publisher Copyright:
© Yonsei University College of Medicine 2020.

All Science Journal Classification (ASJC) codes

  • General Medicine


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