Correlation between JAK2V617F and bone marrow biopsy findings and EEC
| Positive or negative . | No. of patients with JAK2 mutation/total no. of patients (% with JAK2V617F) . | ||
|---|---|---|---|
| All patients . | BCS . | PVT . | |
| Bone marrow biopsy | |||
| Positive | 62/72 (86.1) | 27/35 (77.1) | 35/37 (94.6) |
| Negative | 30/164 (18.3) | 18/67 (26.9) | 12/97 (12.4) |
| EEC | |||
| Positive | 34/44 (77.2) | 16/19 (84.2) | 18/25 (72) |
| Negative | 15/59 (25.4) | 8/21 (38.1) | 7/38 (18.4) |
| Bone marrow biopsy and EEC | |||
| Both positive | 28/29 (96.5) | 13/13 (100) | 15/16 (93.7) |
| Both negative | 3/41 (7.3) | 3/12 (25) | 0/29 (0) |
| Discordant | 18/31 (58) | 8/15 (53) | 10/16 (62.5) |
| Positive or negative . | No. of patients with JAK2 mutation/total no. of patients (% with JAK2V617F) . | ||
|---|---|---|---|
| All patients . | BCS . | PVT . | |
| Bone marrow biopsy | |||
| Positive | 62/72 (86.1) | 27/35 (77.1) | 35/37 (94.6) |
| Negative | 30/164 (18.3) | 18/67 (26.9) | 12/97 (12.4) |
| EEC | |||
| Positive | 34/44 (77.2) | 16/19 (84.2) | 18/25 (72) |
| Negative | 15/59 (25.4) | 8/21 (38.1) | 7/38 (18.4) |
| Bone marrow biopsy and EEC | |||
| Both positive | 28/29 (96.5) | 13/13 (100) | 15/16 (93.7) |
| Both negative | 3/41 (7.3) | 3/12 (25) | 0/29 (0) |
| Discordant | 18/31 (58) | 8/15 (53) | 10/16 (62.5) |
EEC indicates endogenous erythroid colony formation.