The Type dimension of CD38 Monoclonal Antibodies segmentation is dominated by Daratumumab, a fully human IgG1ฮบ antibody that accounts for the majority of commercial value owing to its 2015 first-mover advantage, extensive label expansion across five lines of multiple myeloma, and subcutaneous formulation uptake. Isatuximab, a chilimeric IgG1 antibody approved in 2020, occupies a smaller but growing share; its differentiation lies on fixed-duration combinations and cereblon-modulator compatibility, allowing prescribers to sequence therapy after daratumumab failure. Felzartamab and TAK-079 remain clinical-stage; they target renal transplant desensitization and amyloidosis, respectively, and represent pipeline optionality rather than current revenue, collectively illustrating how market taxonomy in CD38 Monoclonal Antibodies segmentation is shaped by lifecycle stage rather than mechanistic divergence.