Pemphigus complex: large std poodle

Two vets confirmed pemphigus complex in my large otherwise very very active 12 year old female royal std poodle of 65 Pounds. She takes long walks and eats great! Also has fresh rotisserie sams chicken, broccoli, and cauliflower in her diet. Plus nutro ultra. Prednisone 10 mg 2x day, milk thistle 175 mg 2x day, synoviG4, And doxycycline 100 mg 2x day Help Maintain, but do not cure, the problem mainly with bulbous nose and red-pink gums. She has great gums, teeth with brushing and zymox gel otherwise, no swelling, absessed teeth.. Azathioprine 50 mg 1x day worked great but significantly raised her liver values. Should we try chlorambucil (cyclosporin)?

Thanks,

Stephen gran
Palatine, il