Infertility and spontaneous abortion - Spontaneous abortion, habitual abortion
Chromosomal complements in spontaneous abortions recognized clinically in the first trimester
Complement | Frequency | (%) |
Normal or 46, XY or 46,XX | 54.1 | |
Triploidy | 7.7 | |
Tetraploidy | 2.6 | |
Monosomy X | 8.6 | |
Structural abnormalities | 1.5 | |
Sex chromosomal polysomy | 0.2 | |
Autosomal monosomy (G) | 0.1 | |
Autosomal trisomy | 22.3 | |
- No. 1 | 0 | |
- No. 2 | 1.11 | |
- No. 3 | 0.25 | |
- No. 4 | 0.64 | |
- No. 5 | 0.04 | |
- No. 6 | 0.14 | |
- No. 7 | 0.89 | |
- No. 8 | 0.79 | |
- No. 9 | 0.72 | |
- No. 10 | 0.36 | |
- No. 11 | 0.04 | |
- No. 12 | 0.18 | |
- No. 13 | 1.07 | |
- No. 14 | 0.82 | |
- No. 15 | 1.68 | |
- No. 16 | 7.27 | |
- No. 17 | 0.18 | |
- No. 18 | 1.15 | |
- No. 19 | 0.01 | |
- No. 20 | 0.61 | |
- No. 21 | 2.11 | |
- No. 22 | 2.26 | |
Double trisomy | 0.7 | |
Mosaic trisomy | 1.3 | |
Other abnormalities or not specified | 0.9 |
(Data compiled from multiple sources. Simpson JL, Bombard AT: Chromosomal abnormalities in spontaneous abortion: Frequency, pathology, and genetic counseling. In Bennet MJ, Edmonds EK (eds): Spontaneous and Recurrent Abortion, p 51, London, Blackwell Scientific Publications, 1987.)