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DRUG:

HPN536

i
Other names: HPN536, Mesothelin/CD3-specific TriTAC, MSLN TriTAC, HPN-536, HPN 536
Associations
Trials
Company:
Merck (MSD)
Drug class:
CD3 agonist, Mesothelin inhibitor
Related drugs:
Associations
Trials
5ms
Study of HPN536 in Patients With Advanced Cancers Associated With Mesothelin Expression (clinicaltrials.gov)
P1, N=95, Completed, Harpoon Therapeutics | Phase classification: P1/2 --> P1
Phase classification • Metastases
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HPN536
over1year
Study of HPN536 in Patients With Advanced Cancers Associated With Mesothelin Expression (clinicaltrials.gov)
P1/2, N=95, Completed, Harpoon Therapeutics | Active, not recruiting --> Completed | N=200 --> 95 | Trial completion date: May 2023 --> Jan 2023
Trial completion • Enrollment change • Trial completion date
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HPN536
over3years
Study of HPN536 in Patients With Advanced Cancers Associated With Mesothelin Expression (clinicaltrials.gov)
P1/2, N=180, Recruiting, Harpoon Therapeutics | N=87 --> 180 | Trial completion date: May 2021 --> May 2022 | Trial primary completion date: May 2021 --> Apr 2022
Clinical • Enrollment change • Trial completion date • Trial primary completion date
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CRP (C-reactive protein)
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HPN536
over3years
[VIRTUAL] Combinatorial antitumor effects of CD3-based trispecific T cell activating constructs (TriTACs) and checkpoint inhibitors in preclinical models (AACR 2021)
TriTAC molecules are currently being investigated in multiple phase 1/2 clinical trials in solid tumors, including HPN424 targeting prostate-specific membrane antigen (PSMA) in prostate cancer (NCT03577028), HPN536 targeting mesothelin (MSLN) in multiple malignancies (NCT03872206) and HPN328 targeting Delta Like Canonical Notch Ligand 3 (DLL3) in small cell lung cancer (SCLC) (NCT04471727). In addition, in the MSLN-expressing NCI-H292 lung cancer model that co-expresses constitutive, high levels of PD-L1, both anti-PD1 and anti-PDL1 antibodies significantly enhanced the antitumor effects of the MSLN-targeting TriTAC HPN536 in vivo. Together these results demonstrate the potential utility of PD1/PDL1 blockade to enhance the potency of TriTAC-mediated tumor cell killing, supporting further investigation of these combinatorial approaches in patients.
Preclinical • Checkpoint inhibition
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MSLN (Mesothelin) • DLL3 (Delta Like Canonical Notch Ligand 3)
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PD-L1 expression • MSLN expression
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HPN424 • HPN536 • MK-6070
almost4years
Preclinical Characterization of HPN536, a Trispecific, T Cell-activating Protein Construct for the Treatment of Mesothelin-Expressing Solid Tumors. (PubMed, Clin Cancer Res)
HPN536 is potent, well tolerated and exhibits extended half-life in non-human primates. It is current in phase 1 clinical testing in patients with MSLN-expressing malignancies (NCT03872206).
Preclinical • Journal
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MSLN (Mesothelin)
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HPN536