Down Syndrome Clinical Trial
— VALUEOfficial title:
The VALUE Study - Women & Infants as the Coordinating Center
NCT number | NCT03087357 |
Other study ID # | 940244 |
Secondary ID | |
Status | Completed |
Phase | |
First received | |
Last updated | |
Start date | October 10, 2017 |
Est. completion date | October 1, 2020 |
Verified date | September 2022 |
Source | Women and Infants Hospital of Rhode Island |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
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.
Status | Completed |
Enrollment | 2443 |
Est. completion date | October 1, 2020 |
Est. primary completion date | November 19, 2019 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 18 Years and older |
Eligibility | 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 |
Country | Name | City | State |
---|---|---|---|
Canada | GenoScience Diagnostic | Québec | Quebec |
Canada | North York General Hospital | Toronto | Ontario |
Italy | University of Genoa - Hospital San Martino | Genova | |
United States | University of Colorado | Aurora | Colorado |
United States | Beth Israel Deaconess Medical Center | Boston | Massachusetts |
United States | Brigham and Women's Hospital | Boston | Massachusetts |
United States | Bridgeport Hospital | Bridgeport | Connecticut |
United States | Northwestern Memorial Medical Center | Chicago | Illinois |
United States | University of Texas | Houston | Texas |
United States | Center for Fetal Medicine | Los Angeles | California |
United States | Womens Health Care Group | Oaks | Pennsylvania |
United States | Magee Womens Hospital | Pittsburgh | Pennsylvania |
United States | Women & Infants Hospital of Rhode Island | Providence | Rhode Island |
United States | Swedish Medical Center | Seattle | Washington |
United States | South Shore Hospital | South Weymouth | Massachusetts |
United States | University of South Florida | Tampa | Florida |
Lead Sponsor | Collaborator |
---|---|
Women and Infants Hospital of Rhode Island | PerkinElmer, Inc. |
United States, Canada, Italy,
Dahl F, Ericsson O, Karlberg O, Karlsson F, Howell M, Persson F, Roos F, Stenberg J, Ahola T, Alftrén I, Andersson B, Barkenäs E, Brandner B, Dahlberg J, Elfman S, Eriksson M, Forsgren PO, Francois N, Gousseva A, Hakamali F, Janfalk-Carlsson Å, Johansson H, Lundgren J, Mohsenchian A, Olausson L, Olofsson S, Qureshi A, Skarpås B, Sävneby A, Åström E, Öhman O, Westgren M, Kopp-Kallner H, Fianu-Jonasson A, Syngelaki A, Nicolaides K. Imaging single DNA molecules for high precision NIPT. Sci Rep. 2018 Mar 14;8(1):4549. doi: 10.1038/s41598-018-22606-0. — View Citation
Ericsson O, Ahola T, Dahl F, Karlsson F, Persson F, Karlberg O, Roos F, Alftrén I, Andersson B, Barkenäs E, Boghos A, Brandner B, Dahlberg J, Forsgren PO, Francois N, Gousseva A, Hakamali F, Janfalk-Carlsson Å, Johansson H, Lundgren J, Mohsenchian A, Olausson L, Olofsson S, Qureshi A, Skarpås B, Svahn P, Sävneby A, Åström E, Sahlberg A, Fianu-Jonasson A, Gautier J, Costa JM, Jacobsson B, Nicolaides K. Clinical validation of a novel automated cell-free DNA screening assay for trisomies 21, 13, and 18 in maternal plasma. Prenat Diagn. 2019 Oct;39(11):1011-1015. doi: 10.1002/pd.5528. Epub 2019 Aug 19. — View Citation
Palomaki GE, Eklund EE, Kloza EM, Lambert-Messerlian GM. Assessment of a Simplified Cell-Free DNA Method for Prenatal Down Syndrome Screening. Clin Chem. 2022 Sep 14. pii: hvac131. doi: 10.1093/clinchem/hvac131. [Epub ahead of print] — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Develop a post-hoc statistical algorithm suitable for expanded use of SmartNIPT | 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.. | 2 months after confirmation of birth outcome of outstanding cases | |
Primary | Down syndrome detection rate | 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. | 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 | |
Primary | Down syndrome false positive rate | 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. | 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 | |
Primary | Down syndrome failure rate | 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). | 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. | |
Secondary | Trisomy 18 detection rate | 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. | 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 | |
Secondary | Trisomy 13 detection rate | 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. | 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 | |
Secondary | Trisomy 18 false positive rate | 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. | 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 | |
Secondary | Trisomy 13 false positive rate | 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. | 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 | |
Secondary | Trisomy 18 failure rate | 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). | 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. | |
Secondary | Trisomy 13 failure rate | 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). | 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. | |
Secondary | Fetal sex detection rate | 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. | 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 | |
Secondary | Fetal sex detection false positive rate | 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. | 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 | |
Secondary | Fetal sex detection failure rate | 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). | 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. | |
Secondary | Documentation of resources needed to implement SmartNIPT | 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. | Through study completion, 2 years. |
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