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The purpose of this study is to evaluate the performance of the IONA® test which is a non-invasive prenatal test (NIPT) for Down's syndrome and other chromosomal abnormalities in twin pregnancies, from a maternal blood sample.
350 low risk and 150 high risk women with twin pregnancies will be recruited to produce a large cohort evaluation the use of the IONA test in twin pregnancies for Downs, Edwards and Patau syndrome. Reserve samples will also be used to further develop the test for other chromosomal abnormalities.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Low Risk | Other | 350 Low risk The only intervention is a 20 ml blood sample will be taken from each participant. |
|
| High Risk | Other | 150 High Risk going onto invasive diagnostic procedure. The only intervention is a 20 ml blood sample will be taken from each participant. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Blood sample | Procedure | 20 ml blood sample taken from vein in arm |
|
| Measure | Description | Time Frame |
|---|---|---|
| Number of IONA test results which are concordant or discordant with Invasive test or Birth outcome. | IONA test results will be compared to Karyotyping from birth outcome and invasive procedures. | 18 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Asma Khalil, MBBS | National Health Service, United Kingdom | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Premaitha Health | Manchester | M15 6SZ | United Kingdom |
IONA Test results being given to patients
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| ID | Term |
|---|---|
| D004314 | Down Syndrome |
| D000073839 | Trisomy 13 Syndrome |
| D000073842 | Trisomy 18 Syndrome |
| ID | Term |
|---|---|
| D008607 | Intellectual Disability |
| D019954 | Neurobehavioral Manifestations |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
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| ID | Term |
|---|---|
| D001800 | Blood Specimen Collection |
| ID | Term |
|---|---|
| D013048 | Specimen Handling |
| D019411 | Clinical Laboratory Techniques |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
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| D000015 | Abnormalities, Multiple |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D025063 | Chromosome Disorders |
| D030342 | Genetic Diseases, Inborn |
| D006330 | Heart Defects, Congenital |
| D018376 | Cardiovascular Abnormalities |
| D002318 | Cardiovascular Diseases |
| D006331 | Heart Diseases |
| D011677 | Punctures |
| D013514 | Surgical Procedures, Operative |
| D008919 | Investigative Techniques |