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Ref Type Journal Article
PMID (15184865)
Authors Carlomagno F, Guida T, Anaganti S, Vecchio G, Fusco A, Ryan AJ, Billaud M, Santoro M
Title Disease associated mutations at valine 804 in the RET receptor tyrosine kinase confer resistance to selective kinase inhibitors.
Journal Oncogene
Vol 23
Issue 36
Date 2004 Aug 12
URL
Abstract Text We have recently demonstrated that the pyrazolopyrimidines PP1 and PP2 and the 4-anilinoquinazoline ZD6474 display a strong inhibitory activity (IC(50)< or =100 nM) towards constitutively active oncogenic RET kinases. Here, we show that most oncogenic MEN2-associated RET kinase mutants are highly susceptible to PP1, PP2 and ZD6474 inhibition. In contrast, MEN2-associated swap of bulky hydrophobic leucine or methionine residues for valine 804 in the RET kinase domain causes resistance to the three compounds. Substitution of valine 804 with the small amino- acid glycine renders the RET kinase even more susceptible to inhibition (ZD6474 IC(50): 20 nM) than the wild-type kinase. Our data identify valine 804 of RET as a structural determinant mediating resistance to pyrazolopyrimidines and 4-anilinoquinazolines.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
RET L790F missense unknown RET L790F lies within the protein kinase domain of the Ret protein (UniProt.org). The functional effect of L790F is conflicting, as it results in ligand-independent activation of Ret (PMID: 15184865), however, also results in similar cell proliferation and transformation activity to wild-type Ret in cell culture (PMID: 21810974), and therefore, its effect on Ret protein function is unknown.
RET V804G missense unknown RET V804G lies within the protein kinase domain of the Ret protein (UniProt.org). V804G in combination with C634R results in moderately decreased Ret kinase activity and transformation activity compared to C634R alone in cell culture (PMID: 15184865), but has not been characterized individually and therefore, its effect on Ret protein function is unknown (PubMed, Jun 2020).
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
RET S891A Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation in transformed cells expressing RET S891A in culture (PMID: 15184865). 15184865
RET E768D Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation in transformed cells expressing RET E768D in culture (PMID: 15184865). 15184865
RET V804L Advanced Solid Tumor resistant Vandetanib Preclinical Actionable In a preclinical study, transformed cells expressing RET V804L demonstrated resistance to growth inhibition by Caprelsa (vandetanib) in culture (PMID: 15184865). 15184865
RET C634R Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited RET phosphorylation and decreased growth of transformed cells expressing RET C634R in culture (PMID: 15184865). 15184865
RET C634R RET V804G Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, transformed cell lines expressing Ret protein carrying both C634R and V804G mutations were more sensitive to Vandetanib induced inhibition of Ret activity than cells expressing Ret C634R alone in culture (PMID: 15184865). 15184865
RET L790F Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation in transformed cells expressing RET L790F in culture (PMID: 15184865). 15184865
RET V804M Advanced Solid Tumor resistant Vandetanib Preclinical Actionable In a preclinical study, transformed cells expressing RET V804M demonstrated resistance to growth inhibition by Caprelsa (vandetanib) in culture (PMID: 15184865). 15184865
RET M918T Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation and transforming activity in cells expressing RET M918T in culture (PMID: 15184865). 15184865
RET Y791F Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation in transformed cells expressing RET Y791F in culture (PMID: 15184865). 15184865
RET A883F Advanced Solid Tumor sensitive Vandetanib Preclinical Actionable In a preclinical study, Caprelsa (vandetanib) inhibited Ret autophosphorylation in transformed cells expressing RET A883F in culture (PMID: 15184865). 15184865