Evidence map›Paper›PMID 30514979›Full record

SynthesisGenetics in medicine : official journal of the American College of Medical Genetics2018

Prenatal cell-free DNA screening test failures: a systematic review of failure rates, risks of Down syndrome, and impact of repeat testing.

Glenn E Palomaki, Edward M Kloza

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Genetics in medicine : official journal of the American College of Medical Genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Guideline
  3. Review
  4. Article
  5. Investigating the Origins of Biochemical Dysregulation in Trisomy 21 Pregnancy.The Journal of clinical endocrinology and metabolism · 2025
    Article
  6. Article
  7. Article
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  13. Antenatal screening for chromosomal abnormalities.Archives of gynecology and obstetrics · 2022
    Review
  14. Review
  15. The impact of maternal autoimmune disease on cell-free DNA test characteristics.American journal of obstetrics & gynecology MFM · 2021
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Glenn E PalomakiDepartment of Pathology and Laboratory Medicine, Women and Infants Hospital, Providence, Rhode Island, USA. gpalomaki@ipmms.org.
Edward M KlozaDepartment of Pathology and Laboratory Medicine, Women and Infants Hospital, Providence, Rhode Island, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe systematically reviewed the published literature on test failure rates for the sequencing of cell-free DNA (cfDNA) in maternal plasma to identify Down syndrome.

methodsWe searched peer-reviewed English publications with diagnostic results on all pregnancies that provided test failure rates. Data on the odds of failure in Down syndrome and euploid pregnancies and the impact of repeat testing were extracted. Random-effects modeling was then used to identify moderators that could explain variability.

resultsThirty articles satisfied the inclusion criteria for overall failure rates. Study location (Western and Asian with initial testing, and Western with repeat testing) were significant moderators with failure rates of 3.3, 0.6, and 1.2%, respectively (P = 0.001). The odds ratio for Down syndrome in successful versus failed tests was 0.98 (95% confidence interval: 0.62-1.55, I

conclusionLower failure rates in Asian studies may be related to not routinely measuring the fetal fraction and to fewer obese women. Repeat cfDNA testing is effective in providing reliable results after initial failures. Protocols for primary cfDNA screening should focus on Down syndrome, with less common and more structurally abnormal trisomy 18 and 13 pregnancies treated as adjuncts.

Indexed as

AdultCell-Free Nucleic AcidsDown SyndromeFemaleHumansMaternal AgePregnancyPregnancy Trimester, FirstPrenatal DiagnosisRisk FactorsCell-Free Nucleic Acids

Identifiers

PMID30514979

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.