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Fragile X Syndrome — Deal Benchmarks & Valuation

Median Upfront
$393M
Range: $192M - $592M
Total Deal Value
$2.1B
Range: $1.2B - $3.0B
Royalty Rate
7.6% - 15.1%
Tiered up to 19.1%
Dev Milestones
$379M
Range: $228M - $531M

Market Analysis

Fragile X Syndrome is one of the most actively transacted indications in rare disease licensing. Phase 2 deals for fragile x syndrome carry a median total deal value of $2.1B, with upfront payments ranging from $192M to $592M. The recommended deal structure allocates approximately 19% to upfront payments and 81% to milestones.

Milestone structures for fragile x syndrome deals allocate $379M to development milestones, $431M to regulatory milestones, and $913M to commercial milestones. Royalty rates range from 7.6% to 15.1% at the base tier, with tiered escalation reaching 11.6%-19.1% on peak sales.

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Frequently Asked Questions

What are typical deal terms for fragile x syndrome licensing?
Phase 2 fragile x syndrome licensing deals average $393M in upfront payments with $2.1B total deal value. The 19/81 upfront/milestone split reflects the risk profile at this clinical stage.
What royalty rates are standard for fragile x syndrome deals?
Base royalty rates for fragile x syndrome transactions range from 7.6% to 15.1%, with tiered escalations reaching 11.6%-19.1% on peak sales. Rates are influenced by mechanism differentiation, competitive positioning, and territorial scope.
How are fragile x syndrome deal milestones structured?
Fragile X Syndrome deals allocate approximately 81% of total deal value to milestones. Development milestones ($379M) make up the largest share, followed by commercial milestones ($913M) and regulatory milestones ($431M).
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