1 Antibody-Drug Conjugates: A Historical Review -- 2 Payloads of Antibody-Drug Conjugates -- 3 Selecting an Optimal Antibody for Antibody-Drug Conjugate Therapy -- 4 Linker Design for Antibody-Drug Conjugates -- 5 Formulation Development for Antibody-Drug Conjugates -- 6 Bioanalytical Assay for Characterization of Antibody Drug Conjugates -- 7 Pharmacokinetics/Pharmacodynamics and Disposition of Antibody-Drug Conjugates -- 8 Regulatory Considerations -- 9 Major ADC Companies, Current Clinical Trials, Recent Patents Issued and Patent Applications, and Cost Analysis of Drug Therapy -- 10 Mylotarg: Revisiting its Clinical Potential Post-Withdrawal -- 11 ADCETRIS: A Regulatory Case Study of a New Generation Antibody Drug Conjugate -- 12 Ado-Trastuzumab Emtansine -- 13 The Antibody-Drug Conjugate Glembatumumab Vedotin (CDX-011) and its Use in Treatment of Breast Cancer -- 14 Summary and Future Directions.