Check if the codon lost after alt.
checkIfLostCodonAfterAlt(variantsTable, colNameAfterAlt, patterns)variants table
the name of the codon column after alter, type of a string. For example, name of column for the stop codon sequence after alt
codon patterns, "ATG" for start codon, c("TAG", "TAA", "TGA") for stop codon
A list containing TURE or FALSE or NA (if the codon sequence is NA). If colNameAfterAlt does not exist in the variantsTable, return NA