Treosulfan

Sold as GRAFAPEX · given by intravenous

Five to ten years until it comes off patent
5.4 yr
Until anyone may copy it
Protection runs to 2032-01-21
16
Trials running now
56 registered in total
In routine use
Furthest stage reached
already in routine clinical use
3
Organisations running trials
lead sponsors on record
01

Who owns it, and until when

Medexus Pharma Inc
Approval holder
the only company permitted to sell it today
2026-10
Last patent expires
latest patent filed against this product
2032-01
FDA exclusivity ends
a separate protection granted at approval

Whichever date falls later is when other manufacturers may apply to sell copies. Price typically falls steeply within a year of that point, and with it any company's ability to recover the cost of new research on the molecule. That is when it becomes a candidate for the ledger on the first tab.

02

What it is being tested for

Myelodysplastic SyndromeAcute Myeloid LeukemiaMyelodysplastic Syndromes
03

Who is paying for the research

Fred Hutchinson Cancer Center
University or hospital
8
medac GmbH
Company
7
Federal Research Institute of Pedi
University or hospital
6

Who funds the trials matters after protection lapses. Company-funded work usually stops once exclusivity ends; university, hospital and government-funded work does not, and is the research most likely to continue on this molecule afterwards.

04

The trials themselves

NCT07598110Phase 22026 · 77 people · not yet recruiting
FLUDARABINE-TREOSULFAN REDUCED INTENSITY CON

Expiry dates are what the patent holder has filed; litigation, paediatric extensions and settlements routinely move them, so read these as the earliest plausible date rather than a schedule. Not medical advice.

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