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DRUG:

Grafapex (treosulfan)

i
Other names: NSC 39069, CB 2562, CB 40067, CCRIS 2781, HSDB 6963
Company:
Medac, Medexus
Drug class:
Alkylating agent
Related drugs:
1d
Allogeneic Hematopoietic Stem Cell Transplantation in ERCC6L2 Disease. (PubMed, Blood Adv)
The use of non-treosulfan-based myeloablative conditioning (MAC) regimens increased the risk of endothelial complications compared to reduced-intensity conditioning (RIC) (HR, 4.9; 95% CI, 1.1-22.0; P=0.040), whereas outcomes with treosulfan-based MAC were comparable to RIC. In summary, allogeneic HSCT is a viable curative strategy for ED when performed before transformation to an aggressive malignancy i.e. myelodysplasia with excess blasts or acute myeloid leukemia. However, the elevated incidence of endothelial toxicity highlights the importance of optimizing conditioning intensity and enhancing peritransplant monitoring in this population.
Clinical • Journal
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TP53 (Tumor protein P53) • ERCC6 (Excision repair cross-complementation group 6)
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TP53 mutation
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Grafapex (treosulfan)
29d
Study of Treosulfan-Based Conditioning for HSCT in Nijmegen Breakage Syndrome (clinicaltrials.gov)
P2, N=24, Not yet recruiting, Federal Research Institute of Pediatric Hematology, Oncology and Immunology
New P2 trial
|
Grafapex (treosulfan)
2ms
Montelukast as a novel therapeutic approach in metastatic uveal melanoma harboring a CYSLTR2 mutation: a translational case report. (PubMed, ESMO Open)
This is the first published case suggesting a potential role for leukotriene receptor antagonists in CYSLTR2-mutant UM. These findings support further preclinical and clinical investigation of montelukast as a repurposed therapy in this challenging disease entity.
Journal • PD(L)-1 Biomarker • IO biomarker
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CYSLTR2 (Cysteinyl Leukotriene Receptor 2)
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Keytruda (pembrolizumab) • Opdivo (nivolumab) • Yervoy (ipilimumab) • gemcitabine • dacarbazine • Kimmtrak (tebentafusp-tebn) • Grafapex (treosulfan)
2ms
Effect of Moderate Renal Impairment and Race/Ethnicity on Treosulfan Pharmacokinetics (clinicaltrials.gov)
P1, N=36, Recruiting, medac GmbH | Trial completion date: Dec 2025 --> Dec 2026 | Trial primary completion date: Aug 2025 --> Mar 2026
Trial completion date • Trial primary completion date
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HLA-DRB1 (Major Histocompatibility Complex, Class II, DR Beta 1)
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fludarabine IV • Grafapex (treosulfan)
3ms
Safety and Efficacy of FT14 Conditioning for Allogeneic HSCT in Acute Myeloid Leukemia (clinicaltrials.gov)
P2, N=82, Active, not recruiting, Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
New P2 trial
|
fludarabine IV • Grafapex (treosulfan)
4ms
New P2 trial
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Venclexta (venetoclax) • fludarabine IV • Grafapex (treosulfan)
4ms
Remission status prior allogeneic stem cell transplantation in AML/MDS patients harboring single-hit or multi-hit p53 mutations does not impact outcome. (PubMed, Transplant Cell Ther)
The multi-hit TP53 mutation was found to be significantly associated with a reduced LFS rate in MDS/AML patients, in comparison to those with a single-hit TP53 mutation. Patients with a single or multi-hit TP53 may achieve a long-term survival rate of approximately 30%, and should be considered as transplant candidates, even in the absence of complete remission.
Journal • P53mut
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TP53 (Tumor protein P53)
|
TP53 mutation
|
fludarabine IV • Grafapex (treosulfan)
5ms
Treosulfan-Based Conditioning Regimen Before a Blood or Bone Marrow Transplant for the Treatment of Bone Marrow Failure Diseases (BMT CTN 1904) (clinicaltrials.gov)
P2, N=40, Active, not recruiting, Fred Hutchinson Cancer Center | Trial completion date: Dec 2026 --> Mar 2026
Trial completion date
|
HLA-DRB1 (Major Histocompatibility Complex, Class II, DR Beta 1) • HLA-DQB1 (Major Histocompatibility Complex, Class II, DQ Beta 1) • GATA2 (GATA Binding Protein 2) • HLA-B (Major Histocompatibility Complex, Class I, B) • HLA-C (Major Histocompatibility Complex, Class I, C)
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LDH elevation
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methotrexate • fludarabine IV • busulfan • Grafapex (treosulfan) • methotrexate IV
5ms
Treosulfan-Based Versus Clofarabine-Based Conditioning Before Donor Hematopoietic Stem Cell Transplant for the Treatment of Myelodysplastic Syndromes or Acute Myeloid Leukemia (clinicaltrials.gov)
P2, N=23, Active, not recruiting, Fred Hutchinson Cancer Center | Recruiting --> Active, not recruiting | N=80 --> 23 | Trial completion date: Apr 2027 --> Jul 2026 | Trial primary completion date: Oct 2026 --> Jan 2026
Enrollment closed • Enrollment change • Trial completion date • Trial primary completion date
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HLA-DRB1 (Major Histocompatibility Complex, Class II, DR Beta 1) • HLA-DQB1 (Major Histocompatibility Complex, Class II, DQ Beta 1) • HLA-B (Major Histocompatibility Complex, Class I, B) • HLA-C (Major Histocompatibility Complex, Class I, C)
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clofarabine • fludarabine IV • busulfan • Grafapex (treosulfan)
8ms
Allogeneic haematopoietic stem cell transplantation for STAT3 hyper-IgE syndrome: a worldwide study. (PubMed, Blood Adv)
Conditioning regimens were predominantly treosulfan-based (59%; with thiotepa, 34%); other patients received busulfan-based (24%) or melphalan-based (17%) regimens. This worldwide study expand data on HSCT for STAT3-HIES to 41 patients. Despite significant pre-HSCT pulmonary morbidity, OS was high, and patients have improved skin and respiratory disease, though the impact on extra-immune manifestations appears limited.
Journal
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STAT3 (Signal Transducer And Activator Of Transcription 3) • CD34 (CD34 molecule)
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melphalan • thiotepa • busulfan • Grafapex (treosulfan)
8ms
New P2 trial
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melphalan • fludarabine IV • Grafapex (treosulfan)
11ms
Allogeneic Stem Cell Transplant for Myelofibrosis and Myelodysplastic Syndromes: A Contemporary Review. (PubMed, Am J Hematol)
Harnessing molecular technologies, clinical expertise, patient-centered decision-making, and innovative pharmaceutical strategies offers an exciting opportunity to shape a transformative and curative treatment framework. Here, we provide a contemporary review on HCT for MDS and MF, highlighting up-to-date insights into disease biology, standard of care, and recommendations, as well as open avenues.
Review • Journal
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JAK2 (Janus kinase 2) • CALR (Calreticulin)
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busulfan • Grafapex (treosulfan)