
Non-invasive prenatal testing is increasingly being adopted by high-risk pregnant women for screening common fetal chromosomal aneuploidies such as Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), Patau syndrome (trisomy 13), and Turner syndrome (monosomy X). Non-invasiveness, accuracy, and safety are the major factors attributed to the popularity of these tests among gynecologists and expecting mothers compared to invasive tests such as chorionic villus sampling (CVS) and amniocentesis. MaterniT21 (now known as MaterniT21 PLUS) was the first NIPT launched in October 2011 by U.S.-based Sequenom, Inc. Since then, it has led the market, accounting for the largest share in terms of revenue as well as volume (number of tests performed in a year). However, BGI's NIFTY is expected to outperform MaterniT21 PLUS in terms of volume in the global market by the end of 2014. Sequenom, Inc. is likely to maintain its leadership position in North America through 2022. Harmony, verifi, Panorama, informaSeq, VisibiliT, PrenaTest, and BambniTest are the other commercially available NIPTs for detecting chromosomal abnormalities.