First Report of Roseomonas aerofrigidensis Isolated from the Peritoneal Fluid of a Gastric Cancer Patient

Eris Jang1   So Min Kim2   Junhyup Song2*   Le Phuong Nguyen2,3   Hyukmin Lee2   

1 Sprayberry High School, Marietta,
2 Department of Laboratory Medicine and Research Institute of Bacterial Resistance
3 Brain Korea 21 plus Program for Medical Science, Yonsei University College of Medicine, Seoul,

* Corresponding author: Tel: +82-2-2228-6113, Fax: +82-2-364-1583, E-mail:


Roseomonas aerofrigidensis is a gram-negative, strictly aerobic, non-motile bacterium, which was first isolated in 2017 in South Korea. We present the first report of the isolation of R. aerofrigidensis from the peritoneal fluid of a 38-year-old woman with a history of metastatic gastric cancer with peritoneal carcinomatosis. The isolate was resistant to cotrimoxazole. Further research on clinical and microbiological responses to several antibiotics are warranted.

Figures & Tables

. Colony morphology, microscopic image and genetic relationship with related taxa of R. aerofrigidensis. (A) Colonies on sheep blood agar. (B) Gram staining of the isolate (1,000×). (C) A neighbor-joining tree based on 16S rRNA gene sequences. The scale bar equals 0.0050 changes per nucleotide position. Bootstrap values are shown on nodes as percentages of 1,000 replicates.