The Epidermal Growth Factor Receptor Inhibitors segmentation by type revolves around two pharmacologic classes—EGFR small-molecule tyrosine-kinase inhibitors (TKIs) and EGFR monoclonal antibodies (mAbs)—whose revenue contributions reflect distinct clinical positioning. TKIs (erlotinib, gefitinib, osimertinib and 3rd-generation analogues) dominate volume because oral bioavailability enables chronic administration in mutated non-small-cell lung cancer (NSCLC), securing roughly 65 % of the 2023 class sales. Patent expiry of first-generation TKIs is eroding price, yet next-gen agents with CNS activity and T790M selectivity sustain average selling prices >US$7 k per treatment month, cushioning overall value erosion. Conversely, intravenous mAbs (cetuximab, panitumumab, necitumumab) anchor colorectal and squamous-head-and-neck protocols where TKI efficacy is limited; despite smaller patient pools, higher per-dose pricing and companion diagnostics concentrate revenues, accounting for c. 35 % of the EGFR inhibitor market. Incremental line-extension approvals (e.g., cetuximab s.c. formulation) and biosimilar entry after 2025 will reshape the type-wise market taxonomy without materially expanding eligible populations.