Exceptional Performance

Harmony Performance in the General Population Published in the New England Journal of Medicine

Dr. Ron Wapner presents the NEXT study data published in the New England Journal of Medicine. Study results: Harmony outperforms first trimester combined screening in both detection and false-positive rate in a head to head comparison blinded study (n=15,841)

Published Studies

Clinical Validity and Use
Cell-free DNA analysis for Non-invasive Examination of Trisomy (NEXT)
15,841 N Engl J Med. 2015 Apr 1. [Epub ahead of print] DOI: 10.1056/NEJMoa1407349 
NICE-Cohort validation study
3,228 Norton et al.  Am J Obstet Gynecol. 2012 Aug;207(2):137.e1-8.
General screening population, 1st trimester
2,049 Nicolaides  et al.  Am J Obstet Gynecol. 2012 Nov;207(5):374.e1-6.
Trisomy 13
1,949 Ashoor et al. Ultrasound Obstet Gynecol. 2013 Jan;41(1):21-5.
Kypros Nicolaides clinical implementation
1,005 Gil et al. Ultrasound Obstet Gynecol. 2013 Jul;42(1):34-40.
EU-NITE–European study
520 Verweij et al. Prenat Diagn. 2013 Oct;33(10):996-1001.
High-risk population, 1st trimester
400 Ashoor et al. Am J Obstet Gynecol. 2012 Apr;206(4):322.e1-5.
338 Sparks et al.  Am J Obstet Gynecol. 2012 Apr;206(4):319.e1-9.
298 Sparks et al. Prenat Diagn. 2012 Jan;32(1):3-9.
Ob/Gyn real world experience
289 Fairbrother et al. Prenat Diagn. 2013 Jun;33(6):580-3.
Twins study
275 Mar Gil et al. Fetal Diagn Ther. 2014;35:204-11.
Sex chromosome aneuploidies
177 Nicolaides et al. Fetal Diagn Ther. 2014;35(1):1-6.
Sex chromosome aneuploidies
432 Hooks et al. Prenat Diagn. 2014 May;34(5):496-9.
Microarray-based cell-free DNA analysis
878 Juneau et al. Fetal Diagn Ther. 2014;36(4):282-6
Clinical performance with microarrays or next generation sequencing (NGS) is consistent across multiple controlled clinical studies
  Stokowski et al. Prenat Diagn. 2015 Oct; DOI: 10.1002/pd.4686
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Fetal Fraction
Maternal weight effects–commercial data
22,000 Wang et al. Prenat Diagn. 2013 Jul;33(7):662-6.
Consistent in high and low-risk women
3,007 Brar et al. J Matern Fetal Neonatal Med. 2013 Jan;26(2):143-5.
Maternal weight and fetal factors, study 2
1,949 Ashoor et al. Ultraound Obstet Gynecol. 2013 Jan;41(1):26-32.
Maternal weight and fetal factors, study 1
400 Ashoor et al. Fetal Diagn Ther. 2012;31(4):237-43.
Fetal fraction in twins
70 Struble et al., Fetal Diagn Ther. 2014;35:199-203.


Harmony Prenatal Test for Expecting Parents
An overview of the Harmony Prenatal Test: what it is, how it differs from other tests, what to expect when taking this simple blood test, and questions to ask your healthcare provider.

Harmony Prental Test Brochure for Expecing Parents



Support and Advocacy Groups

Find links to organizations that offer information and resources for both expecting parents and healthcare providers on genetic conditions and trisomy testing.

Information about trisomies and other genetic conditions

Many organizations offer education on genetic conditions such as Down syndrome and support to affected families. See below for a brief description of the genetic conditions that Harmony tests for and links to support and advocacy group websites. 

Down syndrome (trisomy 21)

Down syndrome is the most common chromosome condition, occurring in about 1 in 700 births*. Down syndrome affects physical and intellectual development and may shorten lifespan. Down syndrome is a genetic condition that happens when an extra chromosome (chromosome 21) originates in the formation of either the sperm or the egg called “trisomy”.*  Even though Down syndrome is “genetic”, it is not typically an inherited condition.  


NIH Genetics Home Reference


National Association for Down Syndrome

National Down Syndrome Congress

National Down Syndrome Society

Trisomy 18

Trisomy 18 is associated with a high rate of miscarriage. Infants born with trisomy 18 syndrome may have various medical conditions and a shortened lifespan. It is estimated that trisomy 18 syndrome is present in approximately one out of every 5,000 newborns.1 Trisomy 18 is due to an extra copy of chromosome 18.  Even though trisomy 18 is “genetic”, it is not typically an inherited condition.

NIH: Genetics Home Reference

Chromosome 18 Registry and Research Society

Trisomy 18 Foundation

Trisomy 13

Trisomy 13 is associated with a high rate of miscarriage. Infants born with trisomy 13 usually have severe congenital heart defects and other medical conditions. Survival beyond the first year is rare. It is estimated that trisomy 13 is present in approximately 1 out of every 16,000 newborns.** Trisomy 13 is due to an extra chromosome 13. Even though trisomy 13 is “genetic”, it is not typically an inherited condition.

NIH: Genetics Home Reference

SOFT (Support for Trisomy 13/18)

Sex Chromosome Aneuploidies

Turner syndrome, in which one X chromosome is present instead of two, affects 1 in 2,000 girls. Klinefelter syndrome, in which an extra X chromosome is present, affects 1 in 500-1000 boys. Other X and Y chromosome-related conditions affect as many as 1 in 650 newborns.  The features of these conditions are variable.

The Turner Syndrome Society of the United States


The Focus Foundation

These links are provided solely as a resource to the reader. Roche is not affiliated with, nor endorses any of the listed organizations and hereby disclaims any responsibility or liability for any of the content or advice provided by any such organizations.

1"American Pregnancy Association." American Pregnancy Association. American Pregnancy Association, n.d. Web. 12 Oct. 2012. www.americanpregnancy.org/main/statistics.html