Application of mosaicism ratio to multifetal gestations

Jill Rafalko, Samantha Caldwell, Erica Soster, Eyad Almasri, Graham McLennan, Tong Liu, Vivian Weinblatt, Philip Cacheris, Ron McCullough
Mosaicism ratio, or MR, is a laboratory metric that can be calculated using massively parallel sequencing data from cell-free DNA (cfDNA) screening. MR compares the amount of cfDNA present from a particular chromosome or chromosomal region to the overall fetal fraction of the specimen.