Table 1. Assessment of assay performance using laboratory clones 3D7, IT and HB3.
Sample | Genomic DNA (ng) | n° SNPs analyseda | Intensity (R>0.1) | Filtration Ab | Filtration Bc | Correlation between replicatesd |
n° SNPs | n° SNPs | n° SNPs | ||||
3D7 | 250 | 384 | 343 | 339 | 319 | 1.000 |
25 | 319 | 319 | 319 | 319 | 1.000 | |
2.5 | 319 | 319 | 319 | 317 | 0.999 | |
0.25 | 319 | 318 | 313 | 312 | 0.999 | |
HB3 | 250 | 319 | 305 | 315 | 304 | 0.999 |
25 | 319 | 303 | 305 | 301 | 0.998 | |
2.5 | 319 | 303 | 302 | 300 | 0.999 | |
0.25 | 319 | 305 | 244 | 237 | 0.998 | |
IT | 250 | 319 | 305 | 307 | 303 | 0.999 |
25 | 319 | 305 | 311 | 304 | 0.999 | |
2.5 | 319 | 304 | 306 | 300 | 0.995 | |
0.25 | 319 | 307 | 294 | 290 | 0.999 |
319 SNP set was defined from assessments of genotype concordance in 250 ng replicates of the 3D7 reference strain.
Filtration criteria A: SNPs with genotype concordance between replicates >0.95.
Filtration criteria B: SNPs with R>0.1 and with genotype concordance between replicates >0.95.
Mean correlation between replicates.