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Kymera Therapeutics Doses First Patients in Phase 1 Oncology Trials of STAT3 and IRAKIMiD Degraders KT-333 and KT-413
KT-333 is a first-in-class heterobifunctional degrader of the transcriptional regulator STAT3 in development for T cell malignancies and solid tumors KT-413

About this update from Kymera Therapeutics, Inc.
[{"type":"text","content":"KT-333 is a first-in-class heterobifunctional degrader of the transcriptional regulator STAT3 in development for T cell malignancies and solid tumors\nKT-413 is a first-in-class degrader of IRAK4 and the IMiD substrates Ikaros and Aiolos in development for MYD88-mutant B cell lymphomas \nInitial safety and proof-of-mechanism clinical data for both programs to be shared in second half of 2022\nWATERTOWN, Mass., June 15, 2022 /PRNewswire/ -- Kymera Therapeutics, Inc. (NASDAQ: KYMR), a clinical-stage biopharmaceutical company advancing targeted protein degradation to deliver novel small molecule protein degrader medicines, has recently dosed the first patients in separate Phase 1 clinical trials evaluating the STAT3 degrader KT-333 and the IRAKIMiD degrader KT-413. The KT-333 trial includes patients with relapsed/refractory liquid and solid tumors, including T cell lymphomas and leukemia, and the KT-413 study is enrolling patients with relapsed/refractory B cell lymphomas, including MYD88-mutant diffuse large B cell lymphoma (DLBCL).\n\n \n \n \n \n \n \n\n \n\"These programs demonstrate the potential for targeted protein degradation to target critical nodes that traditional modalities can't effectively address, offering a precision medicine approach to challenging cancers,\" said Nello Mainolfi, PhD, Co-Founder, President and CEO of Kymera Therapeutics. \"The initiation of dosing in these studies represents important progress for Kymera toward understanding the pharmacology and safety of these first-in-class investigational medicines, and we look forward to sharing initial dose escalation clinical data later this year.\" \nAbout the KT-333 Clinical Program\nA target long considered \"undruggable,\" STAT3 is a transcriptional regulator that has been linked to numerous cancers and other inflammatory and autoimmune diseases. KT-333 is a potent and selective heterobifunctional small molecule protein degrader of the STAT3 protein in development for oncology indications.\nThe Phase 1 trial will evaluate the safety, tolerability, PK/PD and clinical activity of KT-333 in adult patients with relapsed and/or refractory lymphomas and solid tumors. The first stage of the study will explore escalating doses of KT-333. The second stage will consist of four expansion cohorts to further characterize the safety, tolerability, PK/PD and antitumor a...