$compseqOutput =~ m/Total\scount\s+(\d+).+?
                     C\s+(\d+).+?
                  G\s+(\d+).+?
                 (?:Other\s+(\d+).+)?$/sx
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You have to anchor the end of the string, or else the non-greedy match will happily ignore everything after "10692025", including the "Other" line.