You could try something like this

use v5.14;

use warnings;

my @values = ( qw/XYZATGCACGTGFVGFCCV
YZXCVFDCXZATGCXCCXZZSDD/);


for my $v (@values) {

  my ($pre) = $v =~ m/^(.*?)ATGC/;

  say $pre;
}

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In reply to Re: pattern matching by RichardK
in thread pattern matching by Anonymous Monk

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