how to do analysis of a table content SNP? I have a table with information about SNPs, the table has a total of 55127 rows.

How can I know the number of gene mutations in the table and if a gene is present?

The table is in xls format.
For working with a relatively small dataset in tabular format, I would recommend dplyr. You can read in a excel file using readxl

library(readxl)
library(dplyr)

df &lt;- read_excel(FILENAME)


To get the number of mutations per gene:

df %&gt;% group_by(`Gene name`) %&gt;%
  summarise(num_mutations=n())


If you want to know if there are mutations in a particular gene:

df %&gt;% filter(`Gene name` == QUERY)