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Treosulfan

Treosulfan is an active ingredient of the class «alkyl sulfonate».

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Chemical compound

Informational only — not medical advice. Ask a doctor or pharmacist; never change a dose on your own.

Boxed warning (US label)

Myelosuppression. MYELOSUPPRESSION GRAFAPEX causes severe and prolonged myelosuppression at the recommended dosage. Hematopoietic stem cell transplantation is required to prevent potentially fatal complications of the prolonged myelosuppression.

What it is used for

GRAFAPEX is an alkylating drug indicated for: Use in combination with fludarabine as a preparative regimen for allogeneic hematopoietic stem cell transplantation (alloHSCT) in adult and pediatric patients 1 year of age and older with acute myeloid leukemia (AML).. Use in combination with…

US label

Treosulfan in combination with fludarabine is indicated as part of conditioning treatment prior to allogeneic haematopoietic stem cell transplantation (alloHSCT) in adult patients and in paediatric patients older than one month with malignant and non-malignant diseases.

EMA

How it works

Class: alkyl sulfonate

Common side effects

The following clinically significant adverse reactions are described elsewhere in the labeling: Myelosuppression Seizures Skin Disorders Injection Site Reactions and Tissue Necrosis Secondary Malignancies The most common adverse reactions (≥20%) are musculoskeletal pain, stomatitis, pyrexia, nausea, edema, infection…

US label

Who should not take it

GRAFAPEX is contraindicated in patients with hypersensitivity to any component of the drug product. Hypersensitivity to any component of the drug product.

US label

Excerpts from the US prescribing label (public domain), copied without changes.

Brand names

United States

Grafapex

European Union

Trecondi

Canada

Trecondyv

Other trade names

Graftrevo · Kepcondi · Ovastat · Treograft

Approval status

US Food and Drug Administration
prescription · since 2025
European Medicines Agency
authorised · since 2019
Health Canada
prescription · marketed
First approval anywhere
2019

Codes

ATC
L01AB02
RxNorm CUI
38508
ChEMBL
CHEMBL455186
PubChem CID
9882105
UNII
CO61ER3EPI
Wikidata
Q7838652

Frequently asked questions

What is Treosulfan used for?

Treosulfan is used for: Neoplasm and Hematopoietic stem cell transplantation.

What kind of medicine is Treosulfan?

Treosulfan is an active ingredient of the class «alkyl sulfonate».

What are the brand names of Treosulfan?

Brand names of Treosulfan include Grafapex, Trecondi, Trecondyv, Graftrevo, Kepcondi, Ovastat, and Treograft.

Medicines in the same class

Sources and licences

Updated November 15, 2026