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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.

High Expression of NTRK1 in ETV6::RUNX1 Positive Acute Lymphoblastic Leukaemia Drives Factor Independence and Sensitivity to Larotrectinib

ETV6::RUNX1 is one of the most common recurrent genomic abnormalities in acute lymphoblastic leukaemia (ALL) and is associated with a good prognosis. High expression of NTRK1, encoding tropomyosin receptor kinase A (TrkA), confers a poor prognosis in other malignancies and may contribute to therapy resistance in patients with ETV6::RUNX1 B-ALL.

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

Pharmacological inhibition of sclerostin protects bone from B-cell acute lymphoblastic leukemia-mediated destruction

B-cell acute lymphoblastic leukemia (B-ALL) is the most common pediatric cancer. Current therapeutic regimens have improved 5-year event-free survival rates to 90%, however clinical outcomes for high-risk subgroups, such as BCR-ABL1+ B-ALL and relapsed ALL, remain poor. In addition, 16% of newly diagnosed children with ALL present with vertebral compression fractures. Moreover, 16% of children with ALL undergoing glucocorticoid therapy also experience a high incidence of vertebral fractures, indicating that bone health may be compromised by both leukemia progression and osteotoxicity of chemotherapy.

Successful treatment of a child with acute monoblastic leukaemia who relapsed with T-cell acute lymphoblastic leukaemia: A rare lineage switch

Rishi S. Kotecha MB ChB (Hons) MRCPCH FRACP PhD Co-Head, Leukaemia Translational Research rishi.kotecha@health.wa.gov.au Co-Head, Leukaemia

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).

Targeting cytokine- and therapy-induced PIM1 activation in preclinical models of T-cell acute lymphoblastic leukemia and lymphoma

IL7 and glucocorticoids coordinately drive aberrant activation of PIM1 and suggests that T-ALL and T-LBL patients could benefit from PIM inhibition

Challenges posed by COVID-19 to children with cancer

Development of standardised guidance by national and regional authorities for reducing the risk of SARS-CoV-2 transmission to children with cancer

Germline Elongator mutations in Sonic Hedgehog medulloblastoma

Genetic predisposition to proteome instability may be a determinant in the pathogenesis of paediatric brain cancers

PTPN2 phosphatase deletion in T cells promotes anti-tumour immunity and CAR T-cell efficacy in solid tumours

Our findings define PTPN2 as a target for bolstering T-cell-mediated anti-tumour immunity and CAR T-cell therapy against solid tumours.