2.8. Statistical analysis
Statistical evaluation was performed with Graph pad prism
for categorical variables. Fisher exact test was performed in
the instance of 2 and 3 variables.
3. Results
3.1. ddPCR allows detection of KRAS mutant cells from
whole blood after size-based enrichment with a higher
sensitivity than Sanger sequencing, TaqMelt PCR and HRM
methods
We first determined the capacity of droplet digital PCR to
detect rare copies of mutant KRAS alleles in a KRAS wildtype
(wt) background with a multiplex KRAS assay able to
detect 7 of the most frequent mutations (Figure 1A and B).
For this purpose, we did whole genome amplification of DNA
from PANC1 cells, bearing a heterozygous KRAS mutation