The current study design was prepared to assess and compare the PK, PD, safety, tolerability of the Adello biosimilar candidate, TPI-120 and the US-licensed reference product, Neulasta® after administering a single subcutaneous 2 mg dose in healthy adult subjects in a crossover design. The primary PK parameters are AUC0-t, AUC0-inf, and Cmax, and the primary PD parameters are baseline-corrected AUEC0-t and Emax for ANC.