Table 1. The search strategy summary.

Items	Specification
Date of search	July 11, 2022
Databases and other sources searched	PubMed, EMBASE, Clinical Trials.Gov
Search terms used	Non-small cell lung cancer (NSCLC), gut, microbio*
Timeframe	Indefinite-July 11, 2022
Inclusion and exclusion criteria	• Population: patients (age 18 years and older) with NSCLC
	• Concept: impact of gut microbiome on pathophysiology, outcomes, and treatments
	• Context: original articles, abstracts, and reviews in English language
Selection process	The selection was conducted by the two authors who concurred on the studies included

*, represents a wildcard symbol that extends the search to include all items that start with “microbio”. NSCLC, non-small cell lung cancer; MeSH, Medical Subject Headings.