Patient | Lead time* | Δlead time | |
---|---|---|---|
ctDNA | CEA | ctDNA—CEA | |
4 | 15 | 3 | 12 |
8 | 7 | 0 | 7 |
10 | 11 | 0 | 11 |
15 | 12 | 0 | 12 |
16 | 13 | 7 | 6 |
18 | 2 | 11 | −9 |
Average† | 10 | 3.5 | 6.5 |
*Lead time compared with the conventional follow-up.
†ctDNA lead times are statistically different from CEA lead times (Mann–Whitney, p=0.037).
CEA, carcinoembryonic antigen; ctDNA, circulating tumour DNA.