Mycobacterial characteristics and treatment outcomes in mycobacterium abscessus lung disease

Won Jung Koh, Byeong Ho Jeong, Su Young Kim, Kyeongman Jeon, Kyoung Un Park, Byung Woo Jhun, Hyun Lee, Hye Yun Park, Dae Hun Kim, Hee Jae Huh, Chang Seok Ki, Nam Yong Lee, Hong Kwan Kim, Yong Soo Choi, Jhingook Kim, Seung Heon Lee, Chang Ki Kim, Sung Jae Shin, Charles L. Daley, Hojoong KimO. Jung Kwon

Research output: Contribution to journalArticlepeer-review

142 Citations (Scopus)


Background. Treatment outcomes of patients with Mycobacterium abscessus subspecies abscessus lung disease are poor, and the microbial characteristics associated with treatment outcomes have not been studied systematically. The purpose of this study was to identify associations between microbial characteristics and treatment outcomes in patients with M. abscessus lung disease. Methods. Sixty-seven consecutive patients with M. abscessus lung disease undergoing antibiotic treatment for ≥12 months between January 2002 and December 2012 were included. Morphotypic and genetic analyses were performed on isolates from 44 patients. Results. Final sputum conversion to culture negative occurred in 34 (51%) patients. Compared to isolates from 24 patients with persistently positive cultures, pretreatment isolates from 20 patients with final negative conversion were more likely to exhibit smooth colonies (9/20, 45% vs 2/24, 8%; P = .020), susceptibility to clarithromycin (7/20, 35% vs 1/24, 4%; P = .015), and be of the C28 sequevar with regard to the erm(41) gene (6/20, 30% vs 1/24, 4%; P = .035). Mycobacterium abscessus lung disease recurred in 5 (15%) patients after successful completion of antibiotic therapy. Genotypic analysis revealed that most episodes (22/24, 92%) of persistently positive cultures during antibiotic treatment and all cases of microbiologic recurrence after treatment completion were caused by different M. abscessus genotypes within a patient. Conclusions. Precise identification to the subspecies level and analysis of mycobacterial characteristics could help predict treatment outcomes in patients with M. abscessus lung disease. Treatment failures and recurrences are frequently associated with multiple genotypes, suggesting reinfection. Clinical Trials Registration. NCT00970801.

Original languageEnglish
Pages (from-to)309-316
Number of pages8
JournalClinical Infectious Diseases
Issue number3
Publication statusPublished - 2017 Feb 1

Bibliographical note

Funding Information:
Financial support. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, Information and Communication Technology (ICT) and Future Planning (NRF-2015R1A2A1A01003959) and by a grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute, funded by the Ministry of Health & Welfare, Republic of Korea (HI15C2778).

Publisher Copyright:
© The Author 2016. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)
  • Infectious Diseases


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