Cell-Free DNA Analysis in Maternal Blood: Differences in Estimates between Laboratories with Different Methodologies Using a Propensity Score Approach.

Abstract:

OBJECTIVES:To evaluate the failure rate and performance of cell-free DNA (cfDNA) testing, mainly in terms of detection rates for trisomy 21, performed by 2 laboratories using different analytical methods. METHODS:cfDNA testing was performed on 2,870 pregnancies with the HarmonyTM Prenatal Test using the targeted digital analysis of selected regions (DANSR) method, and on 2,635 pregnancies with the "Cerba test" using the genome-wide massively parallel sequencing (GW-MPS) method, with available outcomes. Propensity score analysis was used to match patients between the 2 groups. A comparison of the detection rates for trisomy 21 between the 2 laboratories was made. RESULTS:In all, 2,811 patients in the Harmony group and 2,530 patients in the Cerba group had no trisomy 21, 18, or 13. Postmatched comparisons of the patient characteristics indicated a higher no-result rate in the Harmony group (1.30%) than in the Cerba group (0.75%; p = 0.039). All 41 cases of trisomy 21 in the Harmony group and 93 cases in the Cerba group were detected. CONCLUSIONS:Both methods of cfDNA testing showed low no-result rates and a comparable performance in detecting trisomy 21; yet GW-MPS had a slightly lower no-result rate than the DANSR method.

journal_name

Fetal Diagn Ther

authors

Bevilacqua E,Jani JC,Letourneau A,Duiella SF,Kleinfinger P,Lohmann L,Resta S,Cos Sanchez T,Fils JF,Mirra M,Benachi A,Costa JM

doi

10.1159/000489124

subject

Has Abstract

pub_date

2019-01-01 00:00:00

pages

302-311

issue

5

eissn

1015-3837

issn

1421-9964

pii

000489124

journal_volume

45

pub_type

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