Myeloma isotypes and switch regions involved in illegitimate recombinations
| Tumor isotype . | Switch region(s) involved in illegitimate recombinations . | ||||
|---|---|---|---|---|---|
| Sμ . | Sγ . | Sμ, Sγ . | Sμ, Sα . | Sμ, Sα, Sγ . | |
| IgGκ | 4 | 1 | 1 | 1 | |
| IgAκ | 1 | 1 | 1 | ||
| IgMλ | 1 | ||||
| κ | 1 | ||||
| Tumor isotype . | Switch region(s) involved in illegitimate recombinations . | ||||
|---|---|---|---|---|---|
| Sμ . | Sγ . | Sμ, Sγ . | Sμ, Sα . | Sμ, Sα, Sγ . | |
| IgGκ | 4 | 1 | 1 | 1 | |
| IgAκ | 1 | 1 | 1 | ||
| IgMλ | 1 | ||||
| κ | 1 | ||||
The figures denote the number of cases in each category. All patients except one (IgGκ; illegitimate switches in Sμ, Sγ) were in progressive phase.