TABLE 1.
Number of cryopreservation procedures in cancer patients performed according to the type of cryopreserved material at Japanese Society of Obstetrics and Gynecology‐certified assisted reproductive technology institutions that responded to the survey
| Cryopreserved material | Procedures, n | |
|---|---|---|
| 2011–2015 (5 years) | 2016–2019 (4 years) | |
| Embryos only | 527 | 1246 |
| Oocytes only | 458 | 1222 |
| Embryos +oocytes | 100 | 69 |
| Total (embryos, oocytes) | 1085 | 2537 |
| Ovarian tissue | 97 | 97 |
| Ovarian tissue +oocytes | 21 | 37 |
| Ovarian tissue +embryos | 3 | 8 |
| Ovarian tissue +embryos + oocytes | 1 | 36 |
| Total (ovarian tissue) | 122 | 178 |
| Total (all materials) | 1207 | 2715 |