Table 1

Dogs treated with 211At-anti-CD45 mAb without marrow grafts

Dog IDAge, moWeight, kg211At, μCi/kg211At, MBq/kgSurvival, wkCause of deathPathology
H313 5.8 100 3.7 53 End of study Normal* 
H297 7.6 196 7.4 54 End of study Normal* 
H248 13.0 320 11.8 54 End of study Normal* 
H213 9.6 405 15.2 49 Increasing transfusion requirements Histologic changes consistent with hemolytic anemia 
H290 8.0 458 17.0 20 Liver failure with ascites Histologic changes in the liver 
H289 11 7.2 618 22.9 17 Liver failure with ascites Histologic changes in the liver 
Dog IDAge, moWeight, kg211At, μCi/kg211At, MBq/kgSurvival, wkCause of deathPathology
H313 5.8 100 3.7 53 End of study Normal* 
H297 7.6 196 7.4 54 End of study Normal* 
H248 13.0 320 11.8 54 End of study Normal* 
H213 9.6 405 15.2 49 Increasing transfusion requirements Histologic changes consistent with hemolytic anemia 
H290 8.0 458 17.0 20 Liver failure with ascites Histologic changes in the liver 
H289 11 7.2 618 22.9 17 Liver failure with ascites Histologic changes in the liver 

The total dose of anti-CD45 mAb was 0.5 mg/kg, whereof 10% was injected as unlabeled anti-CD45 mAb 1 hour before treatment with the radioimmunoconjugate.

*

No macroscopic or histologic evidence of radioactivity induced organ toxicity.

H213 was a pyruvate kinase deficiency carrier that developed increasing transfusion requirements during follow-up.

Histologic examination of liver tissue revealed clusters of iron-laden macrophages scattered throughout the liver acinus and perivenular area.