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Inheritance pattern of genes and type of variant identified.
| All cases n = 104 | Single affected fetus n = 71 | Multiple affected fetus n = 27 | |
|---|---|---|---|
| Autosomal dominant N = 15 | |||
| De novo | 11 | 11 | 0 |
| De novo/mosaic in fetus | 1 | 1 | 0 |
| Inherited (maternal or paternal) | 3 | 0 | 3 |
| Autosomal recessive N = 15 | |||
| Compound heterozygous | 13 | 9 | 4 |
| Homozygous | 2 | 1 | 1 |
| X-linked N = 1 | |||
| De novo | 1 | 1 | 0 |
