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VAlidation of a Lower Cost aneUploidy scrEen (VALUE)

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ClinicalTrials.gov Identifier: NCT03087357
Recruitment Status : Enrolling by invitation
First Posted : March 22, 2017
Last Update Posted : December 5, 2018
Sponsor:
Collaborator:
PerkinElmer, Inc.
Information provided by (Responsible Party):
Women and Infants Hospital of Rhode Island

Brief Summary:
This study will document the detection rate and false positive rate as well as failure rate of a new prenatal screening approach ('Smart NIPT') as described at www.vanadisdx.com and implemented in an academic laboratory with limited molecular testing experience. Testing will be performed on samples from a general risk pregnancy population, with additional high-risk cases added to improve confidence in the detection rate. Additional characteristics of this non-NGS test such as turn-around time, costs (equipment, training, per test), results reporting, fetal sex, fetal fraction, and quality measures will also be examined.

Condition or disease Intervention/treatment
Down Syndrome Trisomy 18 Trisomy 13 Other: SmartNIPT

  Show Detailed Description

Study Type : Observational
Estimated Enrollment : 2650 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: The VALUE Study - Women & Infants as the Coordinating Center
Actual Study Start Date : October 10, 2017
Estimated Primary Completion Date : February 2019
Estimated Study Completion Date : June 2019


Group/Cohort Intervention/treatment
Low Risk
The Low Risk group will consist of 2,400 pregnancies with no high risk findings (e.g., abnormal ultrasound, positive serum screen) who are undergoing initial clinical cfDNA screening. To simulate a general pregnancy population, approximately 20% of these women will be age 35 and older. An estimated 2% (48) of these LR women will have a failed/no call cfDNA test. Consenting women will provide samples for SmartNIPT testing.
Other: SmartNIPT
A novel, non-next generation sequencing (NGS) test that is designed to perform as well as conventional NGS screening while being simpler and less expensive.

High Risk
The High Risk group will consist of 250 women with a positive cfDNA screen reported by a Clinical Laboratory Improvement Amendments (CLIA)-approved commercial laboratory, and who present for consideration of a confirmatory diagnostic test, (i.e., CVS or amniocentesis). Consenting women will provide samples for SmartNIPT testing.
Other: SmartNIPT
A novel, non-next generation sequencing (NGS) test that is designed to perform as well as conventional NGS screening while being simpler and less expensive.




Primary Outcome Measures :
  1. Down syndrome detection rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment OR at newborn examination 24-48 hours after birth ]
    The cfDNA test detection rate for Down syndrome will utilize both the general population (low risk) enrollment (2,400 pregnancies) as well as the high risk enrollment (250 pregnancies, all confirmed trisomy 21/18/13) and be defined as TP/(TP+FN). All low risk women with a cfDNA test positive for trisomy 21 will have comprehensive diagnostic follow-up as will all high risk women, assuring that all affected pregnancies in these two groups will have karyotype confirmation. The true positive (TP) SmartNIPT cfDNA test results will be positive and agree with the abnormal karyotype finding. The false negative (FN) SmartNIPT cfDNA test results will be negative for the abnormal karyotype finding.

  2. Down syndrome false positive rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment. OR negative newborn examination 24-48 hours after birth ]
    The false positive rate for Down syndrome will be computed using data from the general population (low risk) enrollment only (2,400 pregnancies) and be defined as FP/(FP+TN) x 100. The false positive (FP) results are from pregnancies with a SmartNIPT cfDNA test result positive for Down syndrome that are determined to be euploid after diagnostic testing or birth follow-up. True negatives (TN) will be defined as those pregnancies with a cfDNA test result negative for Down syndrome.

  3. Down syndrome failure rate [ Time Frame: Documentation of the failed result for Down syndrome will be considered confirmed when no results are returned for the second tested sample, typically within 14 days after enrollment. ]
    The cfDNA test failure rate will be computed using data from the general population (low) enrollment only (2,400 pregnancies) and be defined as TF/Total. The cfDNA initial test will be classified as an initial test failure (iTF), if the first sample tested fails to produce a complete set of interpretable results. All test failures will be followed by testing a second available sample, and if that is also unsuccessful in producing a complete set of interpretable results, it will be characterized as a test failure (TF).


Secondary Outcome Measures :
  1. Trisomy 18 detection rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment OR at newborn examination 24-48 hours after birth ]
    The cfDNA test detection rates for trisomy 18 will utilize both the general population (low risk) enrollment (2,400 pregnancies) as well as the high risk enrollment (250 pregnancies, all confirmed trisomy 21/18/13) and be defined as TP/(TP+FN). All low risk women with a cfDNA test positive for trisomy 18 will have comprehensive diagnostic follow-up as will all high risk women, assuring that all affected pregnancies in these two groups will have karyotype confirmation. The true positive (TP) SmartNIPT cfDNA test results will be positive and agree with the abnormal karyotype finding. The false negative (FN) SmartNIPT cfDNA test results will be negative for the abnormal karyotype finding.

  2. Trisomy 13 detection rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment OR at newborn examination 24-48 hours after birth ]
    The cfDNA test detection rates for trisomy 13 will utilize both the general population (low risk) enrollment (2,400 pregnancies) as well as the high risk enrollment (250 pregnancies, all confirmed trisomy 21/18/13) and be defined as TP/(TP+FN). All low risk women with a cfDNA test positive for trisomy 13 will have comprehensive diagnostic follow-up as will all high risk women, assuring that all affected pregnancies in these two groups will have karyotype confirmation. The true positive (TP) SmartNIPT cfDNA test results will be positive and agree with the abnormal karyotype finding. The false negative (FN) SmartNIPT cfDNA test results will be negative for the abnormal karyotype finding.

  3. Trisomy 18 false positive rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment. OR negative newborn examination 24-48 hours after birth ]
    The false positive rate for trisomy 18 will be computed using data from the general population (low risk) enrollment only (2,400 pregnancies) and be defined as FP/(FP+TN) x 100. The false positive (FP) results are from pregnancies with a SmartNIPT cfDNA test result positive for trisomy 18 that are determined to be euploid after diagnostic testing or birth follow-up. True negatives (TN) will be defined as those pregnancies with a cfDNA test result negative for trisomy 18.

  4. Trisomy 13 false positive rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment. OR negative newborn examination 24-48 hours after birth ]
    The false positive rate for trisomy 13 will be computed using data from the general population (low risk) enrollment only (2,400 pregnancies) and be defined as FP/(FP+TN) x 100. The false positive (FP) results are from pregnancies with a SmartNIPT cfDNA test result positive for trisomy 13 that are determined to be euploid after diagnostic testing or birth follow-up. True negatives (TN) will be defined as those pregnancies with a cfDNA test result negative for trisomy 13.

  5. Trisomy 18 failure rate [ Time Frame: Documentation of the failed result for Down syndrome will be considered confirmed when no results are returned for the second tested sample, typically within 14 days after enrollment. ]
    The cfDNA test failure rate will be computed using data from the general population (low) enrollment only (2,400 pregnancies) and be defined as TF/Total. The cfDNA initial test will be classified as an initial test failure (iTF), if the first sample tested fails to produce a complete set of interpretable results. All test failures will be followed by testing a second available sample, and if that is also unsuccessful in producing a complete set of interpretable results, it will be characterized as a test failure (TF).

  6. Trisomy 13 failure rate [ Time Frame: Documentation of the failed result for Down syndrome will be considered confirmed when no results are returned for the second tested sample, typically within 14 days after enrollment. ]
    The cfDNA test failure rate will be computed using data from the general population (low) enrollment only (2,400 pregnancies) and be defined as TF/Total. The cfDNA initial test will be classified as an initial test failure (iTF), if the first sample tested fails to produce a complete set of interpretable results. All test failures will be followed by testing a second available sample, and if that is also unsuccessful in producing a complete set of interpretable results, it will be characterized as a test failure (TF).

  7. Fetal sex detection rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment OR at newborn examination 24-48 hours after birth ]
    The cfDNA test detection rate for fetal sex will utilize only the general population (low risk) enrollment (2,400 pregnancies) and be defined as TP/(TP+FN) where the male sex is the target of testing (singleton pregnancies only). All low risk women will have the results of a clinical cfDNA test available to compare with the study's test. The fetal sex result on the clinical test will be considered the gold standard. True positive results will occur when the new test agrees with the clinical test result that the fetus is male. False negative results will occur when the clinical test reports male while the study's test reports female. In any instance where the two tests report discordant results for fetal sex, pregnancy follow-up (either via 2nd trimester ultrasound or birth examination) will resolve the discrepancy.

  8. Fetal sex detection false positive rate [ Time Frame: Karyotype at chorionic villous sampling (CVS)/amniocentesis within 48 hours of enrollment OR at examination of products of conception if fetal loss up to 30 weeks post enrollment. OR newborn examination 24-48 hours after birth reveal female sex ]
    The false positive rate for fetal sex will be computed using data from the general population (low risk) enrollment only (2,400 pregnancies) and be defined as FP/(FP+TN) x 100 where the male sex is the target of testing (singleton pregnancies only). All low risk women will have the results of a clinical cfDNA test available to compare with the study's test. The fetal sex result on the clinical test will be considered the gold standard. False positive (FP) results will occur when the study's cfDNA test predicts a male fetus in a pregnancy where female fetal sex is determined by clinical cfDNA testing. In any instance where the two tests report discordant results for fetal sex, pregnancy follow-up (either via 2nd trimester ultrasound or birth examination) will resolve the discrepancy. True negatives (TN) will be defined as those pregnancies where both clinical cfDNA test results and the study's DNA test results are negative for male sex.

  9. Fetal sex detection failure rate [ Time Frame: Documentation of the failed result for Down syndrome will be considered confirmed when no results are returned for the second tested sample, typically within 14 days after enrollment. ]
    The cfDNA test failure rate will be computed using data from the general population (low) enrollment only (2,400 pregnancies) and be defined as TF/Total. The cfDNA initial test will be classified as an initial test failure (iTF), if the first sample tested fails to produce a complete set of interpretable results. All test failures will be retested using a second sample and if that fails to produce a complete set of interpretable results, it will be counted as a test failure (TF).

  10. Documentation of resources needed to implement SmartNIPT [ Time Frame: Through study completion, 2 years. ]
    Determination of effort needed by non-molecular lab staff to implement SmartNIPT technology, costs and effort associated with bringing this non-NGS methodology into a non-molecular laboratory, and effort required to maintain proficiency in a clinical laboratory.


Other Outcome Measures:
  1. Develop a post-hoc statistical algorithm suitable for expanded use of SmartNIPT [ Time Frame: 2 months after confirmation of birth outcome of outstanding cases ]
    Based on the results of the VALUE Study, we intend to develop an algorithm that can be used to classify results and, if possible, assign reliable and validated patient-specific risks for Down syndrome, trisomy 18, trisomy 13, and prediction of fetal sex..


Biospecimen Retention:   Samples With DNA
Residual plasma samples, only with permission of enrolled women


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
  1. Pregnant women who either have no known risk factors for fetal aneuploidy (Low Risk group) and who present for cfDNA screening as their primary screen at a qualified Enrollment Site.
  2. Pregnant women who have had a positive cfDNA screen and who present for discussion of confirmatory diagnostic testing (High Risk group) at a qualified Enrollment Site.
Criteria

Inclusion Criteria:

  • At least 18 years old
  • 10-20 weeks gestation

    • Low Risk group
  • no known aneuploidy risk
  • scheduled for cfDNA screen as primary aneuploidy screen

    • High Risk group
  • positive cfDNA screen
  • scheduled to discuss CVS/amniocentesis as confirmatory test

Exclusion Criteria:

  • Triplet or higher order pregnancy

    • Low Risk group
  • positive nuchal translucency (NT) or abnormal ultrasound
  • previous pregnancy with aneuploidy

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03087357


Locations
United States, California
Center for Fetal Medicine
Los Angeles, California, United States, 90048
United States, Colorado
University of Colorado
Aurora, Colorado, United States, 80045
United States, Connecticut
Bridgeport Hospital
Bridgeport, Connecticut, United States, 06610
United States, Florida
University of South Florida
Tampa, Florida, United States, 33606
United States, Illinois
Northwestern Memorial Medical Center
Chicago, Illinois, United States, 60611
United States, Massachusetts
Brigham and Women's Hospital
Boston, Massachusetts, United States, 02110
Beth Israel Deaconess Medical Center
Boston, Massachusetts, United States, 02215
South Shore Hospital
South Weymouth, Massachusetts, United States, 02190
United States, Pennsylvania
Womens Health Care Group
Oaks, Pennsylvania, United States, 19456
Magee Womens Hospital
Pittsburgh, Pennsylvania, United States, 15213
United States, Rhode Island
Women & Infants Hospital of Rhode Island
Providence, Rhode Island, United States, 02905
United States, Texas
University of Texas
Houston, Texas, United States, 77030
United States, Washington
Swedish Medical Center
Seattle, Washington, United States, 98104
Canada, Ontario
North York General Hospital
Toronto, Ontario, Canada, M2K 1E1
Canada, Quebec
GenoScience Diagnostic
Québec, Quebec, Canada, G1W IS2
Sponsors and Collaborators
Women and Infants Hospital of Rhode Island
PerkinElmer, Inc.
Investigators
Principal Investigator: Glenn E Palomaki, PhD Women and Infants Hospital of Rhode Island

Publications:
Responsible Party: Women and Infants Hospital of Rhode Island
ClinicalTrials.gov Identifier: NCT03087357     History of Changes
Other Study ID Numbers: 940244
First Posted: March 22, 2017    Key Record Dates
Last Update Posted: December 5, 2018
Last Verified: December 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No

Additional relevant MeSH terms:
Down Syndrome
Trisomy
Intellectual Disability
Neurobehavioral Manifestations
Neurologic Manifestations
Nervous System Diseases
Abnormalities, Multiple
Congenital Abnormalities
Chromosome Disorders
Genetic Diseases, Inborn
Aneuploidy
Chromosome Aberrations
Pathologic Processes
Chromosome Duplication