Incidence and management of adverse events associated with tebentafusp treatment in metastatic uveal melanoma: pooled safety analysis of 410 patients

We conducted an integrated safety analysis from three clinical studies of tebentafusp, a first-in-class ImmTAC bispecific T-cell engager, which can redirect T cells to target glycoprotein 100-positive cells, in metastatic uveal melanoma.HLA-A*02:01-positive patients with unresectable or metastatic u...

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Main Authors: Sato, Takami (Author) , Butler, Marcus O. (Author) , Piperno-Neumann, Sophie (Author) , Hassel, Jessica C. (Author) , Nathan, Paul (Author) , Shoushtari, Alexander N. (Author) , Rutkowski, Piotr (Author) , Carvajal, Richard D. (Author) , Baurain, Jean-Francois (Author) , Schlaak, Max (Author) , Piulats, Josep M. (Author) , Sullivan, Ryan J. (Author) , Ochsenreither, Sebastian (Author) , Dummer, Reinhard (Author) , Kirkwood, John M. (Author) , Ikeguchi, Alexandra (Author) , Joshua, Anthony M. (Author) , Middleton, Mark R. (Author) , Edukulla, Ramakrishna (Author) , Pfeiffer, Constance (Author) , Sacco, Joseph J. (Author)
Format: Article (Journal)
Language:English
Published: September 12, 2025
In: Clinical cancer research
Year: 2025, Volume: 31, Issue: 23, Pages: 5027-5036
ISSN:1557-3265
DOI:10.1158/1078-0432.CCR-25-1513
Online Access:Verlag, kostenfrei, Volltext: https://aacrjournals.org/clincancerres/article/31/23/5027/767463/Incidence-and-Management-of-Adverse-Events
Verlag, kostenfrei, Volltext: https://doi.org/10.1158/1078-0432.CCR-25-1513
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Author Notes:Takami Sato, Marcus O. Butler, Sophie Piperno-Neumann, Jessica C. Hassel, Paul Nathan, Alexander N. Shoushtari, Piotr Rutkowski, Richard D. Carvajal, Jean-Francois Baurain, Max Schlaak, Josep M. Piulats, Ryan J. Sullivan, Sebastian Ochsenreither, Reinhard Dummer, John M. Kirkwood, Alexandra Ikeguchi, Anthony M. Joshua, Mark R. Middleton, Ramakrishna Edukulla, Constance Pfeiffer, and Joseph J. Sacco

MARC

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520 |a We conducted an integrated safety analysis from three clinical studies of tebentafusp, a first-in-class ImmTAC bispecific T-cell engager, which can redirect T cells to target glycoprotein 100-positive cells, in metastatic uveal melanoma.HLA-A*02:01-positive patients with unresectable or metastatic uveal melanoma enrolled in three clinical trials (IMCgp100-01, IMCgp100-102, and IMCgp100-202) who received ≥1 dose of tebentafusp were included. Safety data were pooled to evaluate the profile, onset, and management of treatment-related adverse events (TRAE). Adverse events of special interest included cytokine release syndrome (CRS), acute skin reactions (ASR), and liver function test elevations. Primary prophylaxis with medications was not permitted.Among 410 tebentafusp-treated patients, the most common TRAE were pyrexia (77%), pruritus (71%), and chills (53%). Most patients experienced CRS (88%), almost always mild (grade 1, 19%) to moderate (grade 2, 67%) in severity, with only 2% experiencing grade 3 (n = 6) or 4 (n = 1) CRS. Additionally, 92% had at least one ASR, primarily pruritus and rash, with 21% having a grade 3 event. Onset of CRS and ASR was within 1 to 2 days of infusion and generally reversible with standard interventions. Elevated liver function tests were generally mild and resolved without intervention. Most TRAE occurred following the first few infusions and diminished in frequency and severity with repeated dosing; no cumulative TRAE were detected. Discontinuations due to TRAE were rare (2%); there were no treatment-related deaths.TRAE were consistent with tebentafusp’s mechanism of action, mostly occurred during dose escalation, and were predictable, reversible, and manageable with appropriate surveillance and intervention. 
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