- |||||||||| U3-1402 / Daiichi Sankyo
EGFR inhibition enhances the cellular uptake and antitumor activity of the novel HER3 antibody drug conjugate U3-1402 (Virtual Meeting II: E-Posters) - May 16, 2020 - Abstract #AACRII2020AACR-II_1059; P1 HER3 is frequently over expressed in EGFR-mutant NSCLC.U3-1402 is an antibody-drug conjugate (ADC) comprised of HER3-targeting antibody (patritumab) linked to a topoisomerase I inhibitor (DX-8951 derivative, or DXd)...We aimed to develop a preclinical strategy to enhance the efficacy of U3-1402.Pre-treatment with EGFR TKIs (gefitinib or osimertinib) increased HER3 membrane levels in six different EGFR-mutant cell lines by increasing both the amount of HER3 positive cells and the intensity of HER3 expression...In vivo experiments evaluating the antitumor efficacy of the combination of osimertinib and U3-1402 are currently underway.Our studies reveal that EGFR inhibitor treatment increased membrane expression of HER3 which was associated with enhanced internalization of U3-1402 in EGFR-mutant NSCLC. The combination of osimertinib and U3-1402 may be an effective treatment approach and should be evaluated in future clinical trials in patients with EGFR-mutant NSCLC.
- |||||||||| Herceptin (trastuzumab) / Roche
Journal: Targeting of the HER2/HER3 signaling axis overcomes ligand-mediated resistance to trastuzumab in HER2-positive breast cancer. (Pubmed Central) - Apr 17, 2020 Finally, in heregulin-expressing BT474-HRG and JIMT-1 xenograft models, the addition of pertuzumab and patritumab to trastuzumab also enhanced antitumor efficacy leading to tumor regression. The current study found that triple blockade of HER2 and HER3 using trastuzumab, pertuzumab, and patritumab could overcome resistance to trastuzumab therapy in heregulin-expressing and HER2-positive breast cancer, which could be exploited clinically.
- |||||||||| Erbitux (cetuximab) / Eli Lilly, EMD Serono, patritumab (U3-1287) / Amgen
Clinical, P1 data, Journal: Patritumab with Cetuximab Plus Platinum-Containing Therapy in Recurrent or Metastatic Squamous Cell Carcinoma of the Head and Neck: An Open-Label, Phase-Ib Study. (Pubmed Central) - Feb 22, 2020 The current study found that triple blockade of HER2 and HER3 using trastuzumab, pertuzumab, and patritumab could overcome resistance to trastuzumab therapy in heregulin-expressing and HER2-positive breast cancer, which could be exploited clinically. Patritumab (18-mg/kg LD, 9-mg/kg MD) plus cetuximab/platinum was tolerable, active in SCCHN, and was selected as the phase II dose-regimen.
- |||||||||| Biomarker, Enrollment change, PARP Biomarker, PD(L)-1 Biomarker: I-SPY 2: I-SPY TRIAL: Neoadjuvant and Personalized Adaptive Novel Agents to Treat Breast Cancer (clinicaltrials.gov) - Feb 10, 2020
P2, N=4000, Recruiting, Patritumab (18-mg/kg LD, 9-mg/kg MD) plus cetuximab/platinum was tolerable, active in SCCHN, and was selected as the phase II dose-regimen. N=1920 --> 4000
- |||||||||| patritumab (U3-1287) / Amgen, Daiichi Sankyo
Trial completion date, Trial primary completion date, Combination therapy, Metastases: Patritumab With Cetuximab and a Platinum Agent for Squamous Cell Carcinoma (Cancer) of the Head and Neck (SCCHN ) (clinicaltrials.gov) - Mar 3, 2018 P2, N=87, Active, not recruiting, Active, not recruiting --> Completed Trial completion date: May 2018 --> Feb 2018 | Trial primary completion date: Feb 2018 --> Jan 2018
- |||||||||| patritumab (U3-1287) / Amgen, Daiichi Sankyo
Trial termination, Trial primary completion date, Combination therapy, Metastases: Study of Patritumab in Combination With Erlotinib in Subjects With Locally Advanced or Metastatic Non-Small-Cell Lung Cancer (NSCLC). (HER3-Lung) (clinicaltrials.gov) - Aug 28, 2017 P3, N=724, Terminated, Phase classification: P1/2 --> P1b/2 | Active, not recruiting --> Terminated | Trial primary completion date: Jul 2015 --> Jan 2015; Improved, different standard of care caused business decision to terminate Active, not recruiting --> Terminated | Trial primary completion date: Jun 2018 --> Nov 2016; Pre-defined criteria for continuation were not reached
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