Safety & Pharmacokinetics Study Of Azacitidine (SC And Oral) In Subjects With MDS, CMML, AML, Lymphoma And Multiple Myeloma

"Arm 1:~Cycle 1 (PK Phase) - Subjects will receive a single SC dose of 75 mg/m2 on Days 1 and 15. Single oral doses of a given formulation of azacitidine will be administered in increasing doses on Days 3 and 5, and at doses calculated to deliver 80% and 120% of the SC exposure, up to a maximum dose of 600 mg on Days 17 and 19.~Cycles 2 and beyond - (Treatment phase) Oral azacitidine will be administered in a dose calculated to deliver 100% of the SC exposure up to a maximum of 600 mg on days 1 - 7 of a 28 day cycle.~Arm 2:~All Cycles - Oral azacitidine will be administered a maximum of 600 mg on Days 1 - 7 of a 28 days cycle."