Gut microbiome composition can predict the response to nivolumab in advanced hepatocellular carcinoma patients  

作　　者：Min-Woo Chung Moon-Ju Kim Eun Jeong Won Yu Jeong Lee Yong-Woon Yun Sung Bum Cho Young-Eun Joo Jun-Eul Hwang Woo Kyun Bae Ik-Joo Chung Myung Geun Shin Jong Hee Shin 

机构地区：[1]Department of Internal Medicine,Chonnam National University Hospital and College of Medicine,Hwasun 58128,Jeollanam-do,South Korea [2]Department of Parasitology and Tropical Medicine,Chonnam National University Medical School,Hwasun 58128,Jeollanam-do,South Korea [3]Department of Laboratory Medicine,Chonnam National University Hwasun Hospital,Hwasun 58128,Jeollanam-do,South Korea [4]Department of Preventive Medicine,Chonnam National University Medical School,Hwasun-eup,Hwasun 58128,Jeollanam-do,South Korea [5]Department of Laboratory Medicine,Chonnam National University Hospital,Gwangju 61469,South Korea

出　　处：《World Journal of Gastroenterology》2021年第42期7340-7349,共10页世界胃肠病学杂志（英文版）

摘　　要：BACKGROUND Immunotherapy has revolutionized the clinical outcomes of intractable cancer patients.Little is known about the intestinal nonpathogenic bacterial composition of hepatocellular carcinoma(HCC)patients treated by immunotherapy.AIM To determine whether there is a correlation between gut bacterial composition and prognosis in HCC patients.METHODS From September 2019 to March 2020,we prospectively collected fecal samples and examined the gut microbiome of 8 advanced HCC patients treated with nivolumab as a second-or third-line systemic treatment.Fecal samples were collected before the start of immunotherapy.Fecal samples of patients with progression during treatment were collected at the time of progression,and fecal samples of patients who showed good response to nivolumab were collected after 5-7 mo as follow-up.Metagenomic data from 16S ribosomal RNA sequencing were analyzed using CLC Genomics Workbench.Microbiome data were analyzed according to therapeutic response.RESULTS All 8 patients were male,of which 6 had underlying chronic hepatitis B.A higher Shannon index was found in the responders than in the non-responders after nivolumab therapy(P=0.036).The unweighted beta diversity analysis also showed that the overall bacterial community structure and phylogenetic diversity were clearly distinguished according to therapeutic response.There was no significant difference in the diversity or composition of the patient gut microbiome according to the immunotherapy used.Several taxa specific to therapeutic response were designated as follows:Dialister pneumosintes,Escherichia coli,Lactobacillus reteri,Streptococcus mutans,Enterococcus faecium,Streptococcus gordonii,Veillonella atypica,Granulicatella sp.,and Trchuris trichiura for the nonresponders;Citrobacter freundii,Azospirillum sp.and Enterococcus durans for the responders.Of note,a skewed Firmicutes/Bacteroidetes ratio and a low Prevotella/Bacteroides ratio can serve as predictive markers of non-response,whereas the presence of Akkermansia species predic

关 键 词：MICROBIOME Nivolumab Firmicutes/Bacteroidetes ratio Prevotella/Bacteroides ratio Hepatocellular carcinoma Prognosis 

分 类 号：R735.7[医药卫生—肿瘤]