Evidence map›Paper›PMID 26562517›Full record

ArticlePloS one2015

Performance of Droplet Digital PCR in Non-Invasive Fetal RHD Genotyping - Comparison with a Routine Real-Time PCR Based Approach.

Iveta Svobodová, Eva Pazourková, Aleš Hořínek, Michaela Novotná, Pavel Calda, Marie Korabečná

Abstract readComparative Study
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Two Reliable Methodical Approaches for Non-InvasiveDiagnostics (Basel, Switzerland) · 2020
    Article
  5. Introduction of Noninvasive Prenatal Testing for Blood Group and Platelet Antigens from Cell-Free Plasma DNA Using Digital PCR.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2020
    Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Detection of pseudorabies virus by duplex droplet digital PCR assay.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2018
    Article
  11. Review
  12. 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

6 authors.

Iveta SvobodováInstitute for Biology and Medical Genetics, First Faculty of Medicine, Charles University in Prague and General Faculty Hospital in Prague, Czech Republic.
Eva PazourkováDepartment of Nephrology, First Faculty of Medicine, Charles University in Prague and General Faculty Hospital in Prague, Czech Republic.
Aleš HořínekInstitute for Biology and Medical Genetics, First Faculty of Medicine, Charles University in Prague and General Faculty Hospital in Prague, Czech Republic.
Michaela NovotnáDepartment of Obstetrics and Gynecology, First Faculty of Medicine and General Faculty Hospital in Prague, Charles University in Prague, Czech Republic.
Pavel CaldaDepartment of Obstetrics and Gynecology, First Faculty of Medicine and General Faculty Hospital in Prague, Charles University in Prague, Czech Republic.
Marie KorabečnáInstitute for Biology and Medical Genetics, First Faculty of Medicine, Charles University in Prague and General Faculty Hospital in Prague, Czech Republic.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Detection and characterization of circulating cell-free fetal DNA (cffDNA) from maternal circulation requires an extremely sensitive and precise method due to very low cffDNA concentration. In our study, droplet digital PCR (ddPCR) was implemented for fetal RHD genotyping from maternal plasma to compare this new quantification alternative with real-time PCR (qPCR) as a golden standard for quantitative analysis of cffDNA. In the first stage of study, a DNA quantification standard was used. Clinical samples, including 10 non-pregnant and 35 pregnant women, were analyzed as a next step. Both methods' performance parameters-standard curve linearity, detection limit and measurement precision-were evaluated. ddPCR in comparison with qPCR has demonstrated sufficient sensitivity for analysing of cffDNA and determination of fetal RhD status from maternal circulation, results of both methods strongly correlated. Despite the more demanding workflow, ddPCR was found to be slightly more precise technology, as evaluated using quantitative standard. Regarding the clinical samples, the precision of both methods equalized with decreasing concentrations of tested DNA samples. In case of cffDNA with very low concentrations, variance parameters of both techniques were comparable. Detected levels of fetal cfDNA in maternal plasma were slightly higher than expected and correlated significantly with gestational age as measured by both methods (ddPCR r = 0.459; qPCR r = 0.438).

Indexed as

Blood Specimen CollectionDNAFemaleFetusGenotypeGenotyping TechniquesGestational AgeHumansPolymerase Chain ReactionPregnancyPrenatal DiagnosisReal-Time Polymerase Chain ReactionReproducibility of ResultsRh-Hr Blood-Group SystemDNARh-Hr Blood-Group SystemRho(D) antigen

Identifiers

PMID26562517
PMCPMC4642940

What OpenQuestion holds

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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.