This function attempts to check the repetitive sequence around the mutation.
fun_repeat_check(rep_a, rep_b, ref_seq, ref_width, del)list(pre_rep_status, post_rep_status, pre_rep_short, post_rep_short, homopolymer_status)
The shorter sequence of Ref and Alt.
The longer sequence of Ref and Alt.
Reference sequence around the mutation.
Search length for ref_seq.
Insertion: 0, Deletion: 1