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Ref Type | Abstract | ||||||||||||
PMID | |||||||||||||
Authors | Leenus Martin; Roopal Patel; Jingchuan Zhang; Robin Nevarez; Taylor Congdon; Les Brail; Robert Shoemaker | ||||||||||||
Title | ERAS-601, a potent inhibitor of SHP2, synergistically enhances the activity of a FLT3 inhibitor, gilteritinib, in FLT3-mutated AML tumor models | ||||||||||||
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URL | https://aacrjournals.org/cancerres/article/82/12_Supplement/3345/701410/Abstract-3345-ERAS-601-a-potent-inhibitor-of-SHP2 | ||||||||||||
Abstract Text | ERAS-601 is a potent, small molecule allosteric inhibitor of wildtype SHP2, a non-receptor protein tyrosine phosphatase (PTP) encoded by the PTPN11 gene. ERAS-601 inhibits wildtype SHP2 biochemically with an IC50 of 4.6 nM and demonstrates selectivity across panels of 300 kinases and 12 phosphatases. SHP2 mediates upstream receptor tyrosine kinase (RTK) signaling via its phosphatase-mediated regulation of guanine nucleotide exchange factors (GEFs). ERAS-601 inhibits the SHP2 dependent cycling of KRAS from the inactive GDP-bound state to the active GTP-bound state and demonstrates anti-proliferative activity in FLT3-mutated human cancer cells. Gilteritinib is a second-generation FLT3 inhibitor and has demonstrated clinical activity, but emerging resistance limits the benefit of monotherapy. Here, we explored the combination of gilteritinib with ERAS-601 in FLT3 mutated AML nonclinical models. The combination of ERAS-601 with gilteritinib inhibits the oncogenic RAS/MAPK signaling as measured by pERK1/2 and synergistically inhibits the cellular viability of FLT3-mutated AML cells in vitro. The combination of ERAS-601 with gilteritinib achieves a more durable tumor growth inhibition than the respective gilteritinib and ERAS-601 monotherapies in vivo. These preclinical data support the clinical development of ERAS-601 in combination with gilteritinib in FLT3-altered AML |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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FLT3 mutant | acute myeloid leukemia | predicted - sensitive | ERAS-601 + Gilteritinib | Preclinical | Actionable | In a preclinical study, the combination of ERAS-601 and Xospata (gilteritinib) demonstrated synergy, resulting in decreased viability of acute myeloid leukemia cells harboring FLT3 mutations in culture and inhibition of tumor growth in in vivo models (Cancer Res (2022) 82 (12_Supplement): 3345). | detail... |