TABLE 4.
Overview of Ancillary Twin Studies With Inclusion of Biological Material
| Participants (N) | DNA (from PBMC) | Plasma | Serum | RNA | Other | |
|---|---|---|---|---|---|---|
| Twins with essential tremor | 343 | 343 | 343 | 71 | ||
| GENOMEUTWINS | 400 | 400 | 400 | 400 | ||
| GENOMEUTWINS substudy; Twins with migraine | 62 | 62 | 62 | 62 | ||
| GENOMEUTWINS substudy; Twins with diabetes | 58 | Buccal swabs: 58 | ||||
| Twins with autism | 145 | Buccal swabs: 145 | ||||
| Twins discordant for BMI | 349 | 349 | 349 | 142 | ||
| Twins with rheumatoid arthritis | 238 | 238 | 238 | 238 | 194 | Saliva: 195 |
| Twins with CLP* | 21 | 21 | 21 | 21 | ||
| Twin study on skin ageing | 225 | 220 | 219 | |||
| Twins discordant for birth weight | 313 | 313 | 313 | 313 | 313 | Saliva: 310 Urine: 310 |
| Twins with COL# | 27 | 27 | 27 | 27 | 27 | Saliva: 26 |
Note: BMI: body mass index;
*
CLP: cleft lip and palate;
#
COL: chronic obstructive lung disease.