preferred_name: NEGATIVE - No KRAS or NRAS mutations were detected in exons 2, 3 and 4
preferred_name_lc: negative - no kras or nras mutations were detected in exons 2, 3 and 4
label: NEGATIVE - No KRAS or NRAS mutations were detected in exons 2, 3 and 4
label_lc: negative - no kras or nras mutations were detected in exons 2, 3 and 4