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Editorial
©The Author(s) 2025.
World J Stem Cells. Dec 26, 2025; 17(12): 111748
Published online Dec 26, 2025. doi: 10.4252/wjsc.v17.i12.111748
Table 6 Stage classification
EIF tier
Descriptor
Example metric
Weight (W)
Tier IFoundational scientific discovery (gene sequencing, biochemical structure)2003 publication1.0
Tier IIIntellectual property generation≥ 5 core patents citing or derived from this strain sequence (e.g., Allergan BoNT A1 formulation, purification methods)2.0
Tier IIITranslational uptakeFDA IND/NDA filings, clinical protocols using Hall A strain3.0
Tier IVCommercial deploymentAnnual BOTOX® revenue ≈ $ 2.3 B4.0
Tier VSocietal/regulatory impactInclusion in CDC, WHO classification; reimbursement frameworks; global adoption5.0


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