The invention discloses a
colorectal adenoma biomarker, a kit and a
screening method of the biomarker. The
colorectal adenoma biomarker comprises the following components: an internal organ Odorbacter splanchnicus62174,
Bacteroides cellulolyticus 58046, Alistipes shahii62199 and the like, and is characterized in that the internal organ Odorbacter splanchnicus62174, the internal organ
Bacteroides cellulolyticus 58046, the internal organ Alistipes shahii62199, the internal organ Alistipes shahii62199, the internal organ Alistipes shahii62199 and the internal organ Alistipes shahii62199 and the internal organ Alistipes shahii62199 and the internal organ Alistipes The tumor biomarker
screening method comprises the following steps: S1, acquiring
microorganism sequencing data and
clinical information data of a
disease control group and a
normal control group, and preprocessing; s2, screening the preprocessed microbial
sequencing data, and annotating SNV levels of strains with enough sequencing depth and coverage to obtain information such as SNV
mutation frequency of each strain; s3, performing
difference analysis on the microbial SNV data of the
disease patient and the
healthy control group to obtain SNV sites with
significant difference in different strains; s4, screening the differential SNV loci, and determining an optimal SNV biomarker; in conclusion, the biomarker and the
screening method provided by the invention can be used for better early diagnosis and treatment of cancers, and have important significance and clinical application value.