Effects of treatment with low doses of RG7112 and Peg-IFNα 2a alone or in combination on the number of WT JAK2 hematopoietic colonies
Patient number* . | JAK2 V617F allele burden (%) . | Total of colonies genotyped . | % Of hematopoietic colonies with WT JAK2 . | |||
---|---|---|---|---|---|---|
Cytokines only (control) . | Peg-IFNα 2a . | RG7112 . | RG7112 + IFNα . | |||
2 | 14 | 127 | 58 | 56.5 | 46 | 70.6† |
15 | 70 | 129 | 14.3 | 26.1 | 23 | 40* |
5 | 49 | 144 | 70 | 67 | 71 | 79 |
6 | 22 | 132 | 38 | 47 | 45 | 50 |
13 | 75 | 180 | 21 | 32 | 25 | 50† |
14 | 20 | 168 | 31 | 44 | 28 | 45 |
3 | 40 | 189 | 79 | 83 | 79 | 87 |
16 | 50 | 121 | 4 | 6 | 6 | 24† |
22 | 70 | 121 | 6 | 0 | 0 | 27† |
21 | 45 | 112 | 50 | 80 | 58.3 | 83.3 |
19 | + | 105 | 12.5 | 20 | 64 | 90.9† |
Patient number* . | JAK2 V617F allele burden (%) . | Total of colonies genotyped . | % Of hematopoietic colonies with WT JAK2 . | |||
---|---|---|---|---|---|---|
Cytokines only (control) . | Peg-IFNα 2a . | RG7112 . | RG7112 + IFNα . | |||
2 | 14 | 127 | 58 | 56.5 | 46 | 70.6† |
15 | 70 | 129 | 14.3 | 26.1 | 23 | 40* |
5 | 49 | 144 | 70 | 67 | 71 | 79 |
6 | 22 | 132 | 38 | 47 | 45 | 50 |
13 | 75 | 180 | 21 | 32 | 25 | 50† |
14 | 20 | 168 | 31 | 44 | 28 | 45 |
3 | 40 | 189 | 79 | 83 | 79 | 87 |
16 | 50 | 121 | 4 | 6 | 6 | 24† |
22 | 70 | 121 | 6 | 0 | 0 | 27† |
21 | 45 | 112 | 50 | 80 | 58.3 | 83.3 |
19 | + | 105 | 12.5 | 20 | 64 | 90.9† |
24 to 48 colonies were plucked and examined in each condition.
Patient numbers are listed in supplemental Table 2.
Benefits of the combination therapy are defined as the appearance of at least a 10% greater increase in WT colonies after combination therapy compared with the colonies treated with a single agent.