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Small Molecule vs JAK Inhibitor — Immunology Deal Terms Comparison

Small Molecule Median Upfront
$466M
Total: $2.4B
JAK Inhibitor Median Upfront
$513M
Total: $2.7B
Small Molecule Royalties
13.1%-21.9%
Tiered to 25.9%
JAK Inhibitor Royalties
13.5%-22.5%
Tiered to 26.5%

Market Analysis

In immunology, Small Molecule and JAK Inhibitor represent two of the most actively transacted modalities. At Phase 2, Small Molecule deals carry a median total deal value of $2.4B with $466M upfront, compared to $2.7B total value and $513M upfront for JAK Inhibitor. The valuation difference reflects distinct risk-reward profiles, manufacturing complexity, and competitive dynamics.

Milestone structures diverge between the two modalities. Small Molecule development milestones average $393M versus $432M for JAK Inhibitor. Commercial milestones are $884M for Small Molecule and $973M for JAK Inhibitor. Royalty rates range from 13.1%-21.9% for Small Molecule and 13.5%-22.5% for JAK Inhibitor.

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Frequently Asked Questions

How do Small Molecule and JAK Inhibitor deal terms compare in immunology?
Small Molecule Phase 2 deals average $2.4B total deal value ($466M upfront), while JAK Inhibitor deals average $2.7B ($513M upfront). The difference reflects modality-specific risk profiles, manufacturing considerations, and competitive positioning.
Which modality commands higher royalty rates: Small Molecule or JAK Inhibitor?
Small Molecule base royalties range from 13.1% to 21.9%, while JAK Inhibitor royalties range from 13.5% to 22.5%. High-tier escalation reaches 25.9% for Small Molecule and 26.5% for JAK Inhibitor.
How do milestone structures differ between Small Molecule and JAK Inhibitor?
Small Molecule deals allocate $393M to development milestones vs $432M for JAK Inhibitor. Commercial milestones are $884M (Small Molecule) vs $973M (JAK Inhibitor), reflecting different commercialization profiles and market expectations.
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