Table 1.

KRAS mutations detected via Droplet Digital PCR in tumour tissue and circulating cell-free DNA

Specimen	Tumour purity %)	KRAS variant	Mutant allele frequency (%)
Colon primary tumour	80	G12C	41.2
Pancreas primary tumour	30	G12D	23.2
Liver metastasis	70	G12D	47.4
Cell-free DNA		G12D	9.7