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Clinical details of the 5 cases with fetal trisomies 18 and 21
| Placentation | Case | Maternal age | Gestational age | Conception | Fetal fraction | BMI | NIPT Result | Karyotyping |
|---|---|---|---|---|---|---|---|---|
| DCDA | Case 1 | 31 | 19 | ART | 9 | 25 | T18 | Normal/T18 |
| Case 2 | 37 | 18 | ART | 7.5 | 22 | T21 | Normal/T21 | |
| Case 3 | 35 | 16 | ART | 21.2 | 23 | T21 | Normal/T21 | |
| Case 4 | 36 | 16 | ART | 30.6 | 22 | T21 | Normal/T21 | |
| MCDA | Case 5 | 37 | 16 | NP | 6.1 | 27 | T21 | Normal/T21 |
DCDA Dichorionic diamniotic, MCDA Monochorionic diamniotic, ART Artificial reproductive technology, NP Natural pregnancy
