Table 1.
Recipient Dog # | Marrow TNCs × 108/kg | Neutrophil Increase5 | % Donor MNC Chimerism (Max-final) | Rejection | GVHD | Duration of Chimerism (weeks) | |
---|---|---|---|---|---|---|---|
Group 12 | G347 | 5.5 | Yes | 37-0 | Yes | No | 8 |
G406 | 2.1 | Yes | 40-0 | Yes | No | 11 | |
Group 23 | G417 | 2.1 | Yes | 0-0 | Yes | No | 0 |
G331 | 4.7 | Yes | 0-0 | Yes | No | 0 | |
G442 | 4.8 | Yes | 67-30 | No | No | 31 | |
Group 34 | G449 | 3.2 | Yes | 34-0 | Yes | No | 10 |
G472 | 2.6 | Yes | 22-0 | Yes | No | 6 | |
G342 | 5.9 | Yes | 0-0 | Yes | No | 0 | |
G5256 | 3.1 | Yes | 29-0 | Yes | No | 7 |
Dog leukocyte antigen (DLA), total body irradiation (TBI) extracorporeal photophoresis (ECP), mycophenolate mofetil (MMF), and cyclosporine (CSP)
Dogs in Group 1 received ECP product on days -2 and -1; 100 cGy TBI on day 0; MMF (10 mg/kg twice daily subcutaneously) day 0 to day 27, and CSP (15 mg/kg twice daily orally on day -1 to day 35).
Dogs in Group 2 received ECP product on days -6 and -5; 4 mg/m2 pentostatin i.v. on days -4, -3, and -2; 100 cGy TBI on day 0; and same regimen of MMF and CSP as in group 1.
Dogs in Group 3 received ECP product on days -6 and -5; 4 mg/m2 pentostatin i.v. on days -14, -13, -12, -4, -3, and -2; 100 cGy TBI on day 0; and same regimen of MMF and CSP as in group 1.
Absolute neutrophil counts increase greater than 500/μL
G525 received ECP product on day -6 only due to machine malfunction.