Fig. 1

All newborns with clinical abnormalities and the causes of their problems are schematically depicted. In A the causes are specified as chromosomal aberrations (chr.), monogenetic (monog.), multigenetic (multig.), teratogenic (teratog.), and idiopathic (unclear) causes; in B all causes are summarized to 100%. It can be clearly seen that prenatally a maximum of 10% of the cases with clinical abnormalities can be characterized by a clear genetic cause; according to this review not more than 5% of these aberrant cases can be accessed by NIPT (green label)