Table 2.
Incidence of chromosomal abnormalities according to type of rearrangement and day of biopsy
| Day 3 biopsy | Day 5/6 biopsy | |||||
|---|---|---|---|---|---|---|
| Robertsonian translocation | Reciprocal translocation | Pericentric inversion | Polymorphic inversion on chromosome 9 | Robertsonian translocation | Reciprocal translocation | |
| Biopsied embryos | 889 | 725 | 140 | 242 | 44 | 180 |
| Informative results (%) | 864 (97.2) | 703 (97.0) | 138 (98.6) | 236 (97.5) | 44 (100.0) | 178 (98.9) |
| Abnormal embryos (%) | 638 (73.8)a | 628 (89.3)a,b,c,d | 94 (68.1)b | 161 (68.2)c | 27 (61.4)e | 143 (80.3)d,e |
| Euploid unbalanced embryos (%) | 114 (13.2)f,g,h | 182 (25.9)f,i,j,k | 9 (6.5)g,i | 7 (3.0)h,j | 7 (15.9)l | 62 (34.8)k,l |
| Aneuploid balanced embryos (%) | 289 (33.4)m,n | 153 (21.8)m,o,p | 50 (36.2)o | 104 (44.1)n,p | 16 (36.4) | 38 (21.3) |
| Aneuploid unbalanced embryos (%) | 118 (13.7)q,r,s | 206 (29.3)q,t,u | 9 (6.5)r,t | 9 (3.8)s,u | 3 (6.8)v | 41 (23.0)v |
| Aneuploid balanced + unbalanced embryos (%) | 407 (47.1) | 359 (51.1) | 59 (42.8) | 113 (47.9) | 19 (43.2) | 79 (44.4) |
| Chaotic embryos | 117 (13.5) | 87 (12.4)w | 26 (18.8) | 41 (17.4) | 1 (2.3) | 2 (1.1)w |
a–wp < 0.05, for Fishers exact test/chi-square test between columns in the same row