Observed Sequences at the Sites of Frame-Shift Mutations
| Type occurrence revised sequence | Cloned sequence | Number |
| −1 frame-shift | ||
| A7 | A6 | 3 |
| A4 | A3 | 2 |
| A5 | A4 | 1 |
| G2 | G1 | 2 |
| C4 | C3 | 1 |
| C3 | C2 | 1 |
| C2 | C1 | 1 |
| T3 | T2 | 1 |
| CGA | CA | 1 |
| TGT | TT | 1 |
| TAC | TC | 1 |
| GCT | GT | 1 |
| −2 frame-shift | ||
| ATAT | AT | 1 |
| CACA | CA | 1 |
| GAGAGA | GAGA | 1 |
| TATTG | TTG | 1 |
| +1 frame-shift | ||
| A8 | A9 | 1 |
| A6 | A7 | 2 |
| G2 | G3 | 1 |
| C2 | C3 | 1 |
| T7 | T8 | 2 |
| GA | GTA | 1 |
| +2 frame-shift | ||
| A6 | A8 | 1 |
| A7 | A9 | 1 |