Obtain peptide sequences from aminoacid change and gene list

Question

[tiziana.langella89]

I have excel file with more of 100 mutations and this information for each mutations: "chromosome","position","ref","alt","Codon_Change","Amino_Acid_Change","Gene_Name". How can I convert this list to obtain all possible peptide sequences of 9 aminoacid including the aminoacid change? I have to do MHC-I binding predictions! thanks Tiziana