Structure-selective differentiation of deletion mutations in circulating tumor DNA using dual probe-based isothermal amplification.

A rapid dual probe-based fluorimetric assay was developed to detect deletion mutations in circulating tumor DNA using structure-selective isothermal amplification and pattern recognition. This method could detect both homozygous and heterozygous deletion configurations in a one-set experiment and achieved picomolar detection limits with high selectivity within 2 hours. It was promising for point-of-care cancer diagnosis in hospital settings.