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CFHR1 copy number in aHUS patients and control subjects
| CFHR1 copy number | aHUS (n = 196) | Controls (n = 505) |
|---|---|---|
| 0 | 25 | 15 |
| 1 | 54 | 145 |
| 2 | 115 | 342 |
| 3 | 2 | 3 |
aHUS indicates atypical hemolytic uremic syndrome; and CFHR1, complement factor H–related 1.
χ2 = 25.9; P = 1.0 × 10−5.
