Molecular Profile Detail

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Profile Name KIT D816E
Gene Variant Detail

KIT D816E (unknown)

Relevant Treatment Approaches KIT Inhibitor Avapritinib

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
KIT V560_Y578del KIT D816E gastrointestinal stromal tumor decreased response Sunitinib Preclinical Actionable In a preclinical study, a patient derived GIST cell line co-harboring KIT V560_Y578del and KIT D816E demonstrated a decreased response to treatment with Sutent (sunitinib) (PMID: 25239608). 25239608
KIT Y570_L576del KIT D816E PTEN T321fs gastrointestinal stromal tumor resistant Imatinib Preclinical - Pdx Actionable In a preclinical study, Gleevec (imatinib mesylate) did not inhibit Kit, Erk, or Mtor signaling and resulted in minimal tumor inhibition in patient-derived xenograft (PDX) model of gastrointestinal stromal tumor harboring KIT D816E, KIT Y570_L576del, and PTEN T321fs, which was established from a patient who did not respond to Gleevec (imatinib mesylate), Sutent (sunitinib), and Nexavar (sorafenib) (PMID: 29100343). 29100343
KIT Y570_L576del KIT D816E PTEN T321fs gastrointestinal stromal tumor resistant Sunitinib Preclinical - Pdx Actionable In a preclinical study, Sutent (sunitinib) demonstrated limited inhibition of Kit, Erk, and Mtor signaling and resulted in minimal (22.9%) tumor inhibition in patient-derived xenograft (PDX) model of gastrointestinal stromal tumor harboring KIT D816E, KIT Y570_L576del, and PTEN T321fs, which was established from a patient who did not respond to Gleevec (imatinib mesylate), Sutent (sunitinib), and Nexavar (sorafenib) (PMID: 29100343). 29100343
KIT Y570_L576del KIT D816E PTEN T321fs gastrointestinal stromal tumor sensitive Regorafenib Preclinical - Pdx Actionable In a preclinical study, Stivarga (regorafenib) inhibited Kit, Erk, and Mtor signaling, resulted in tumor growth inhibition in patient-derived xenograft (PDX) model of gastrointestinal stromal tumor harboring KIT D816E, KIT Y570_L576del, and PTEN T321fs, which was established from a patient who did not respond to Gleevec (imatinib mesylate), Sutent (sunitinib), and Nexavar (sorafenib) (PMID: 29100343). 29100343
KIT Y570_L576del KIT D816E PTEN T321fs gastrointestinal stromal tumor sensitive Imatinib + LY294002 Preclinical - Pdx Actionable In a preclinical study, Gleevec (imatinib mesylate) in combination with LY294002 resulted in enhanced tumor growth inhibition compared to monotherapy in patient-derived xenograft (PDX) model of gastrointestinal stromal tumor harboring KIT D816E, KIT Y570_L576del, and PTEN T321fs, which was established from a patient who did not respond to Gleevec (imatinib mesylate), Sutent (sunitinib), and Nexavar (sorafenib) (PMID: 29100343). 29100343
KIT W557_K558del KIT D816E KIT D820V gastrointestinal stromal tumor predicted - resistant Imatinib Case Reports/Case Series Actionable In a clinical study, KIT D816E and D820V were identified as secondary mutations in a patient with gastrointestinal stromal tumor harboring KIT W557_K558del who developed resistance to Gleevec (imatinib) (PMID: 18294292). 18294292
KIT exon 11 del KIT D816E gastrointestinal stromal tumor sensitive Avapritinib Preclinical - Cell culture Actionable In a preclinical study, Ayvakit (avapritinib) inhibited proliferation of gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E in culture (PMID: 31085175). 31085175
KIT exon 11 del KIT D816E gastrointestinal stromal tumor sensitive Midostaurin Preclinical - Cell culture Actionable In a preclinical study, Rydapt (midostaurin) inhibited proliferation of gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E in culture (PMID: 31085175). 31085175
KIT exon 11 del KIT D816E gastrointestinal stromal tumor sensitive Regorafenib Preclinical - Cell culture Actionable In a preclinical study, Stivarga (regorafenib) inhibited proliferation of gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E in culture (PMID: 31085175). 31085175
KIT exon 11 del KIT D816E gastrointestinal stromal tumor decreased response Sunitinib Preclinical - Cell culture Actionable In a preclinical study, gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E demonstrated reduced response to growth inhibition by Sutent (sunitinib) compared to cells harboring KIT exon 11 deletion alone in culture (PMID: 31085175). 31085175
KIT exon 11 del KIT D816E gastrointestinal stromal tumor sensitive Imatinib Preclinical - Cell culture Actionable In a preclinical study, Gleevec (imatinib) inhibited proliferation of gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E in culture (PMID: 31085175). 31085175
KIT exon 11 del KIT D816E gastrointestinal stromal tumor sensitive Ripretinib Preclinical - Cell culture Actionable In a preclinical study, Qinlock (ripretinib) inhibited proliferation of gastrointestinal stromal tumor cells harboring both KIT exon 11 deletion and KIT D816E in culture (PMID: 31085175). 31085175
KIT Y568_L576delinsCV KIT D816E KIT D820Y gastrointestinal stromal tumor predicted - sensitive Ripretinib Case Reports/Case Series Actionable In a Phase I trial, treatment with Qinlock (ripretinib) decreased circulating tumor DNA, resulted in stable disease lasting over 21 months in a patient with gastrointestinal stromal tumor harboring a primary KIT Y568_L576delinsCV mutation and two acquired resistance mutations, KIT D816E and KIT D820Y (PMID: 31085175; NCT02571036). 31085175