Abstract
Objective:
To identify characteristics associated with undergoing cell-free DNA (cfDNA) and multiple marker screening (MMS) simultaneously or redundantly (after receiving negative results from the first screening test) among women aged ⩾35 years.
Study design:
Participants presenting for prenatal testing completed a questionnaire that included measures of pregnancy worry and attitudes toward potential testing outcomes; data on prenatal test use was obtained via medical record review. We used multivariable logistic regression to identify factors associated with redundant or simultaneous screening.
Results:
Among 164 participants, 69 (42.1%) had cfDNA redundantly (n=51) to, or simultaneously (n=18) with, MMS. Compared with the 46 MMS-negative women who did not undergo further testing, those who underwent redundant or simultaneous cfDNA/MMS screening were more likely to have annual family incomes >$150 000, to feel having a miscarriage would be worse than having an intellectually disabled child, to desire comprehensive testing for intellectual disability and to have more pregnancy worry.
Conclusion:
Providers who counsel patients on prenatal aneuploidy screening tests should explain the appropriate utilization of these screening tests to avoid unnecessary or minimally informative use of multiple tests.
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Acknowledgements
We thank Michelle Moghadassi, MPH, and Sanae Nakagawa, MA, for their assistance with data analysis. This project was supported in part by the National Center for Advancing Translational Sciences, National Institutes of Health through UCSF-CTSI Grant Number UL1 TR000004. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.
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From 1 April 2012 through 31 March 2014, MK was the UCSF site PI for a clinical study of cfDNA testing among average-risk women (the Noninvasive Examination of Trisomy NEXT Study) funded by Ariosa Diagnostics, and her institution received unrestricted research funding for her research program from Natera in 2013.
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Components of this work were presented as a poster on 11 February 2016 at the Society of Maternal Fetal Medicine 36th Annual Meeting in Atlanta, GA, USA (Abstract 325).
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Lewkowitz, A., Kaimal, A., Thao, K. et al. Sociodemographic and attitudinal predictors of simultaneous and redundant multiple marker and cell-free DNA screening among women aged ⩾35 years. J Perinatol 37, 772–777 (2017). https://doi.org/10.1038/jp.2017.66
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DOI: https://doi.org/10.1038/jp.2017.66