Microbiome analysis of 940 lung cancers in never-smokers reveals lack of clinically relevant associations
Abstract
Abstract In spite of the growing interest in the microbiome in human cancer, there are currently only small-scale lung cancer microbiome studies conducted directly on tissue. As part of the Sherlock- Lung study, we studied the microbiomes of 940 lung cancers (4090 samples) in never smokers (LCINS) directly from lung tissue using three data types: 16S rRNA gene sequencing (16S), whole-genome sequencing (WGS) with paired blood, and RNA-seq. We observe very low biomass and few microbiome associations in LCINS using 16S and WGS tissue. Using RNA-seq, we observe more total microbial reads, and decreased relative abundance of several commensal bacteria at the genus and species levels in tumors relative to paired normal lung tissue. Among all datasets, we see no consistent associations between the lung tissue microbiome, or circulating bacterial DNA, and any available demographic and clinical features, including age, sex, genetic ancestry, second-hand tobacco smoking exposure, LCINS histology, stage, and overall survival. We also observe no microbiome associations with any human genomic alterations within the same samples. Every null result should be interpreted with caution given the possibility of future methodological breakthroughs. However, all together, using multiple data types in nearly 1000 patients, we find no substantive role for the lung cancer microbiome in treatment-naïve LCINS.
Article Details
Authors (62)
John P. McElderry
Tongwu Zhang
Wei Zhao
Phuc H. Hoang
Samuel Anyaso-Samuel
Jian Sang
Azhar Khandekar
Caleb Hartman
Frank J. Colón-Matos
Mona Miraftab
Monjoy Saha
Olivia Lee
Sunandini Sharma
Kristine M. Jones
Bin Zhu
Marcos Díaz-Gay
Luis Mas
Oscar Arrieta
Eric S. Edell
Jacobo Martínez Santamaría
Matthew B. Schabath
Sai Yendamuri
Marta Manczuk
Jolanta Lissowska
Beata Świątkowska
Anush Mukeria
Oxana Shangina
David Zaridze
Ivana Holcatova
Vladimir Janout
Dana Mates
Simona Ognjanovic
Milan Savic
Milica Kontic
Yohan Bossé
Bonnie E. Gould Rothberg
David C. Christiani
Valerie Gaborieau
Paul Brennan
Geoffrey Liu
Paul Hofman
Maria Pik Wong
Kin Chung Leung
Chih-Yi Chen
Chao Agnes Hsiung
Nathaniel Rothman
Charles Leduc
Marina K. Baine
William D. Travis
Lynette M. Sholl
Philippe Joubert
Robert Homer
Soo-Ryum Yang
Qing Lan
Martin A. Nowak
David C. Wedge
Ludmil B. Alexandrov
Stephen J. Chanock
Emily Vogtmann
Christian C. Abnet
Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD
Jianxin Shi
Maria Teresa Landi