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Constitutive Activation of RAS/MAPK Pathway Cooperates with Trisomy 21 and Is Therapeutically Exploitable in Down Syndrome B-cell Leukemia

Children with Down syndrome (constitutive trisomy 21) that develop acute lymphoblastic leukemia (DS-ALL) have a 3-fold increased likelihood of treatment-related mortality coupled with a higher cumulative incidence of relapse, compared with other children with B-cell acute lymphoblastic leukemia (B-ALL).

Romidepsin enhances the efficacy of cytarabine in vivo, revealing HDAC inhibition as a therapeutic strategy for KMT2A-rearranged acute lymphoblastic leukemia

In this study, we investigate the in vivo synergy between romidepsin and cytarabine

Partial trisomy 21 contributes to T-cell malignancies induced by JAK3-activating mutations in murine models

This JAK3A572V knockin model is a relevant new tool for testing the efficacy of JAK inhibitors in JAK3-related hematopoietic malignancies

Translational Genomics in Leukaemia

The Translational Genomics in Leukaemia team is focused on identifying the causes of leukaemia, with the goal of developing new targeted treatments to improve quality of care and long-term survival for all children with leukaemia.

Perspectives on the origin and therapeutic opportunities in Down syndrome-associated leukemia

It is now well accepted that germline or de novo genetic alterations predispose to cancer development, especially during childhood. Among them, constitutive trisomy 21, also known as Down syndrome (DS), has been shown to predispose to acute leukemia affecting both the myeloid (ML-DS) and lymphoid (DS-ALL) lineages. ML-DS is associated with a good prognosis compared to children without DS, due in part to a higher sensitivity to conventional chemotherapy.

A biobank of pediatric patient-derived-xenograft models in cancer precision medicine trial MAPPYACTS for relapsed and refractory tumors

Pediatric patients with recurrent and refractory cancers are in most need for new treatments. This study developed patient-derived-xenograft (PDX) models within the European MAPPYACTS cancer precision medicine trial.

Stepwise GATA1 and SMC3 mutations alter megakaryocyte differentiation in a Down syndrome leukemia model

Acute megakaryoblastic leukemia of Down syndrome (DS-AMKL) is a model of clonal evolution from a preleukemic transient myeloproliferative disorder requiring both a trisomy 21 (T21) and a GATA1s mutation to a leukemia driven by additional driver mutations.

It is more “unbalanced” than you think

Sébastien Malinge PhD Laboratory Head, Translational Genomics in Leukaemia, Senior Research Fellow (University of Western Australia), Adjunct Senior

Preclinical efficacy of azacitidine and venetoclax for infant KMT2A-rearranged acute lymphoblastic leukemia reveals a new therapeutic strategy

Infants with KMT2A-rearranged B-cell acute lymphoblastic leukemia (ALL) have a dismal prognosis. Survival outcomes have remained static in recent decades despite treatment intensification and novel therapies are urgently required.

Development of new preclinical models of childhood leukaemia

Sébastien Laurence Rishi S. Malinge Cheung Kotecha PhD BPharm (Hons) MBA PhD MB ChB (Hons) MRCPCH FRACP PhD Laboratory Head, Translational Genomics