- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, Merck (MSD)
HERTHENA-PanTumor01: A global, multicohort, phase 2 trial of HER3-DXd in relapsed/refractory metastatic solid tumors. (Hall A; Poster Bd #: 307a) - Apr 24, 2024 - Abstract #ASCO2024ASCO_2135; P2 The primary endpoint for each cohort is ORR by investigator per RECIST version 1.1. Secondary endpoints include safety and tolerability, DOR, DCR, PFS, overall survival, pharmacokinetics, and the correlation between HER3 IHC protein expression and efficacy.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, Merck (MSD)
A phase 2 study of HER3-DXd in patients (pts) with metastatic breast cancer (MBC). () - Jan 22, 2024 - Abstract #YIR2024YIR_124; P2 HER3-DXd had an acceptable safety profile, and the data further confirm the clinical activity in MBC in heavy pre-tx MBC across the broad range of HER3 expression levels. Parts B and Z are ongoing and data from this report support the potential entry of HER3-DXd into the therapeutic paradigm in MBC
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo
The impact of HER3 dynamics on the efficacy of HER3-DXd, a novel HER3 directed antibody-drug conjugate (Section 19; Poster Board #19) - Mar 14, 2023 - Abstract #AACR2023AACR_6070; HER3 expression was dynamically changed by HER3-DXd dosing regimen and by RTKi treatment, resulting in a substantial impact on payload release. These findings support our strategy of clinical studies using HER3-DXd after drugs that increase HER3 expression including EGFR TKI and indicate that HER3 dynamics may play a key role in achieving optimal efficacy of HER3-DXd.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, patritumab (U3-1287) / Amgen, Daiichi Sankyo
HERTHENA-Lung02: A randomized Phase 3 study of patritumab deruxtecan vs platinum-based chemotherapy in locally advanced or metastatic EGFR-mutated NSCLC after progression with a third-generation EGFR tyrosine kinase inhibitor (Section 46; Poster Board #24) - Mar 14, 2023 - Abstract #AACR2023AACR_3693; P1, P3 Patients are stratified by prior third-generation EGFR TKI treatment (osimertinib vs other), line of prior third-generation EGFR TKI use (first vs second line), region (Asia vs rest of world), and presence of stable brain metastases (yes vs no)...Other secondary endpoints include investigator-assessed progression-free survival, objective response rate, duration of response, clinical benefit rate, disease control rate, time to response (all assessed by investigator and BICR per RECIST 1.1), safety, and patient-reported outcomes. Enrollment began May 2022 and is ongoing, with sites in Asia, Australia, Europe, and North America.
- |||||||||| PHA665752 / Pfizer, patritumab (U3-1287) / Amgen, Daiichi Sankyo
Journal: Dual-targeting therapy against HER3/MET in human colorectal cancers. (Pubmed Central) - Feb 9, 2023 We established HER3-and/or MET-KO SW1116 cell lines, and HER3/MET-double KO resulted in the inhibition of in vitro cell proliferation and in vivo tumor growth in nude mice by SW1116 cells. Furthermore, the combination of patritumab, an anti-HER3 fully human mAb, and PHA665752, a MET inhibitor, markedly inhibited in vitro cell proliferation, 3D-colony formation, and in vivo tumor growth in nude mice by SW1116 cells The dual targeting of HER3/MET has potential as CRC therapy.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, patritumab (U3-1287) / Amgen, Daiichi Sankyo
HERTHENA-Lung02: A Randomized Phase 3 Study of Patritumab Deruxtecan vs Platinum-Based Chemotherapy in Locally Advanced or Metastatic EGFR-Mutated NSCLC After Progression with a Third-Generation EGFR TKI (Ballroom FGH) - Sep 14, 2022 - Abstract #IASLCNACLC2022IASLC_NACLC_82; P1, P3 Pts are stratified by prior 3rd-gen EGFR TKI treatment (osimertinib vs other), line of prior 3rd-gen EGFR TKI use (first vs second line), region (Asia vs rest of world), and presence of stable brain metastases (yes vs no)...Enrollment began May 2022 and is ongoing, with sites in the US, Canada, EU, Asia, and Australia. This trial in progress was previously presented at ESMO 2022.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, patritumab (U3-1287) / Amgen, Daiichi Sankyo
HERTHENA-Lung02: A randomized phase III study of patritumab deruxtecan vs platinum-based chemotherapy in locally advanced or metastatic EGFR-mutated NSCLC after progression with a third-generation EGFR TKI (Poster Area, Hall 4) - Jul 28, 2022 - Abstract #ESMO2022ESMO_2914; P1, P3 Pts are stratified by prior 3rd-gen EGFR TKI treatment (osimertinib vs other), line of prior 3rd-gen EGFR TKI use (first vs second line), region (Asia vs rest of world), and presence of stable brain metastases (yes vs no)...Other secondary endpoints include investigator-assessed PFS, objective response rate, duration of response, clinical benefit rate, disease control rate, time to response (all per BICR per RECIST v1.1), safety, and patient-reported outcomes. Enrollment into the trial is starting in Q2 2022.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, patritumab (U3-1287) / Amgen, Daiichi Sankyo
Pharmacokinetics, efficacy, and safety of patritumab deruxtecan (HER3-DXd) in EGFR inhibitor-resistant, EGFR-mutated (EGFRm) non-small cell lung cancer (NSCLC) (Poster Area, Hall 4) - Jul 28, 2022 - Abstract #ESMO2022ESMO_2158; P1 The primary objective of cohort 4 is to evaluate the PK of this formulation during the first treatment cycle. Secondary objectives include the evaluation of PK, safety, tolerability, immunogenicity, and efficacy.
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A Phase II Study of HER3-DXD in Patients (pts) with Metastatic Breast Cancer (MBC) (Exhibition area) - Mar 19, 2022 - Abstract #ESMOBC2022ESMO_BC_401; P2 Part B will enroll ∼60 pts (20 pts in up to 3 subgroups) as defined from the biomarker expression pattern and preliminary efficacy findings from Part A. Pts from the same biomarker subgroups in Parts A and B will be pooled for the final efficacy analysis. Enrollment to Part A was initiated in November 2020.
- |||||||||| patritumab deruxtecan (U3-1402) / Daiichi Sankyo, patritumab (U3-1287) / Amgen, Daiichi Sankyo
HER3 is an actionable target in advanced prostate cancer (Section 32) - Mar 9, 2022 - Abstract #AACR2022AACR_4583; HER3 is commonly expressed in advanced PC and has clinical relevance in this setting. Our data indicate that HER3 is a valid target for clinical trials for men suffering from high HER3 expressing advanced PC.
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