Table 3.
Probabilities of confirmation on amniocytes of Mosaic or Non Mosaic abnormal cell line considering the different combinations of the affected placental tissues.
| Trophoblast | Mesenchyme | Confirmation |
|---|---|---|
| (direct) | (culture) | |
| A | N | TFM IV/(CPM I + TFM IV) = 14/322 = 4.4% |
| MA | N | 7/(236 + 7) = 2.9% |
| NMA | N | 7/(72 + 7) = 8.9% |
| N | A | TFM V/(CPM II + TFM V) = 51/426 = 12.0% |
| N | MA | 35/(335 + 35) = 9.5% |
| N | NMA | 16/(40 + 16) = 28.6 % |
| A | A | TFM VI/(CPM III + TFM VI) = 48/138 = 34.8% |
| MA | MA | 20/(52 + 20) = 27.8% |
| NMA | MA | 13/(28 + 13) = 31.7 % |
| MA | NMA | 10/(3 + 10) = 76.9 % |
| NMA | NMA | 5/(7 + 5) = 41.7% |
TFM = True fetal mosaicism; CPM = Confined placental mosaicism; A = Abnormal; N = Normal; MA = Mosaic Abnormality; NMA = Non Mosaic Abnormality.