Strategy could reduce myelosuppression in AML

At day 81—a month after stopping treatment—4 of the mice had detectable CD45.2+ AML cells in their blood. So they restarted treatment the next day. After 4 additional cycles, AML cells were undetectable in all 5 mice. At day 146—a month after stopping the second round of treatment—AML cells again became detectable in the blood.

The mice did not receive any additional treatment. One died at day 196, and 1 was killed at day 197 due to weight loss related to feeding difficulties (but this mouse did not show signs of AML).

The other 3 mice were “active and healthy” until they were killed at day 214. However, they had “high proportions” of CD45.2+ myeloid cells in their blood since day 183. And 2 of the mice had increased WBC counts from day 197.