07May 2023
Association between low fetal fraction in cell‐free DNA screening and fetal chromosomal aberrations

Association between low fetal fraction in cell‐free DNA screening and fetal chromosomal aberrations

This review examined the relationship between low fetal fraction (LFF) in cell-free DNA screening and the risk of fetal chromosomal aberrations. The results showed that LFF was associated with a higher risk of trisomy 13, trisomy 18, monosomy X, and triploidy, but not trisomy 21. LFF was also associated with a higher risk of various other types of fetal chromosomal aberrations. The absolute rates of fetal chromosomal aberrations in women with LFF ranged between 1-2%. The review noted the potential risk of ascertainment bias and heterogeneity in population characteristics or applied technologies across included studies.

  • #gynaecology - ivf

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