OnCo
drugsProductPhase 3

Pasritamig

J&J's prostate-specific T-cell engager, notable for very little cytokine release in early trials.

Phase 1: PSA50 in ~40% at the recommended dose with CRS rates far below other engagers; phase 3 (KLK2-P3-01) in mCRPC after ARPI ± taxane began 2025.

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IgG antibody backbone (PDB 1IGT)
RCSB PDB

No public structure of pasritamig; representative IgG shown.

How it works, step by step · animated schematic, not to scale
T-cell engagers (bispecific)
Modality
Bispecific T-cell engager (KLK2×CD3)
Mechanism
Low-affinity CD3 arm and KLK2 targeting; designed for outpatient dosing.
Brand / code
JNJ-78278343

Trials

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ClinicalTrials.gov · phase 2/3
refreshed 2026-09-09
2 studies2 recruiting2 Phase 3
Search “Pasritamig” on ClinicalTrials.gov →
Counts are from a name search and may include unrelated studies; up to 100 studies are summarised.

Recruiting now (live from ClinicalTrials.gov)

Recruiting trials near you · live from ClinicalTrials.gov
Pasritamig
intervention: Pasritamig
Open on ClinicalTrials.gov →

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Latest papers

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Literature trend1 papers in the last 12 monthsHow this is computed
Latest papers · live from Europe PMC
Open in Europe PMC

Query for this drug: (TITLE:"Pasritamig" OR ABSTRACT:"Pasritamig" OR TITLE:"JNJ-78278343" OR ABSTRACT:"JNJ-78278343") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Pasritamig, not a curated reading list.

Connected

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