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Angelman Syndrome — Deal Benchmarks & Valuation

Median Upfront
$125M
Range: $50M - $207M
Total Deal Value
$1.8B
Range: $919M - $2.8B
Royalty Rate
7.7% - 15.4%
Tiered up to 19.4%
Dev Milestones
$857M
Range: $435M - $1.3B

Market Analysis

Angelman Syndrome is one of the most actively transacted indications in neurology licensing. Phase 1 deals for angelman syndrome carry a median total deal value of $1.8B, with upfront payments ranging from $50M to $207M. The recommended deal structure allocates approximately 7% to upfront payments and 93% to milestones.

Milestone structures for angelman syndrome deals allocate $857M to development milestones, $514M to regulatory milestones, and $343M to commercial milestones. Royalty rates range from 7.7% to 15.4% at the base tier, with tiered escalation reaching 11.7%-19.4% on peak sales.

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Frequently Asked Questions

What are typical deal terms for angelman syndrome licensing?
Phase 1 angelman syndrome licensing deals average $125M in upfront payments with $1.8B total deal value. The 7/93 upfront/milestone split reflects the risk profile at this clinical stage.
What royalty rates are standard for angelman syndrome deals?
Base royalty rates for angelman syndrome transactions range from 7.7% to 15.4%, with tiered escalations reaching 11.7%-19.4% on peak sales. Rates are influenced by mechanism differentiation, competitive positioning, and territorial scope.
How are angelman syndrome deal milestones structured?
Angelman Syndrome deals allocate approximately 93% of total deal value to milestones. Development milestones ($857M) make up the largest share, followed by commercial milestones ($343M) and regulatory milestones ($514M).
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