Table 2. Frequency of SMN2 Copy Number in Different Geographical Regions.
| Sub‐Saharan Africa | Europe | |||||
|---|---|---|---|---|---|---|
| SMN2 Copy# | Mali, n = 613 | Nigeria, n = 120 | Kenya, n = 120 | Germany, n = 100 | France, n = 621 | Sweden, n = 502 |
| 0 | 150 (24%) | 33 (27%) | 23 (19%) | 9 (9%) | 52 (8%) | 37 (8%) |
| 1 | 276 (45%) | 66 (55%) | 53 (44%) | 38 (38%) | 239 (38%) | 212 (42%) |
| 2 | 172 (28%) | 21 (18%) | 38 (32%) | 48 (48%) | 321 (52%) | 247 (49% |
| 3 | 15 (3%)a | — | 6 (5%) | 5 (5%) | 9 (2%) | 6 (1%) |
| Study | ‐‐‐‐‐‐‐‐Present study‐‐‐‐‐‐‐ | Anhuf 200323 | Corcia 201220 | |||
a
Three or 4 SMN2 copies.