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1.	Ericsson, Olle, et al. (author) Clinical validation of a novel automated cell-free DNA screening assay for trisomies 21, 13, and 18 in maternal plasma. 2019 In: Prenatal diagnosis. - : Wiley. - 1097-0223 .- 0197-3851. ; 39:11, s. 1011-1015 Journal article (peer-reviewed)abstract To evaluate clinical performance of a new automated cell-free (cf)DNA assay in maternal plasma screening for trisomies 21, 18, and 13, and to determine fetal sex.Maternal plasma samples from 1200 singleton pregnancies were analyzed with a new non-sequencing cfDNA method, which is based on imaging and counting specific chromosome targets. Reference outcomes were determined by either cytogenetic testing, of amniotic fluid or chorionic villi, or clinical examination of neonates.The samples examined included 158 fetal aneuploidies. Sensitivity was 100% (112/112) for trisomy 21, 89% (32/36) for trisomy 18, and 100% (10/10) for trisomy 13. The respective specificities were 100%, 99.5%, and 99.9%. There were five first pass failures (0.4%), all in unaffected pregnancies. Sex classification was performed on 979 of the samples and 99.6% (975/979) provided a concordant result.The new automated cfDNA assay has high sensitivity and specificity for trisomies 21, 18, and 13 and accurate classification of fetal sex, while maintaining a low failure rate. The study demonstrated that cfDNA testing can be simplified and automated to reduce cost and thereby enabling wider population-based screening.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Johansson, Henrik (1); Jacobsson, Bo, 1960 (1); Dahl, Fredrik (1); Karlberg, Olof (1); Persson, Fredrik (1); Olofsson, Simon (1); show more...; Andersson, Björn (1); Janfalk Carlsson, Ås ... (1); Åström, Eva (1); Lundgren, Johanna (1); Ericsson, Olle (1); Brandner, Birgit (1); Dahlberg, Jenny (1); Roos, Fredrik (1); Ahola, Tarja (1); Karlsson, Filip (1); Alftrén, Ida (1); Barkenäs, Emelie (1); Boghos, Ani (1); Forsgren, Per-Ola (1); Francois, Niels (1); Gousseva, Anna (1); Hakamali, Faizan (1); Mohsenchian, Atefeh (1); Olausson, Linus (1); Qureshi, Atif (1); Skarpås, Björn (1); Svahn, Peter (1); Sävneby, Anna (1); Sahlberg, Anna (1); Fianu-Jonasson, Aino (1); Gautier, Jérémie (1); Costa, Jean-Marc (1); Nicolaides, Kypros (1); show less...

University: University of Gothenburg (1); Karolinska Institutet (1)

Language: English (1)

Research subject (UKÄ/SCB): Medical and Health Sciences (1)

Year: 2019 (1)Undo refine

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