tebentafusp · Medicine question

Can tebentafusp temporarily lower blood lymphocyte counts?

iatroX medicinesPublished 8 November 2026

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Answer

Yes, tebentafusp caused transient, clinically non-significant reductions in blood lymphocyte counts the day after the first three doses, with counts returning to baseline before subsequent doses.

Sources for this answer

KIMMTRAK (tebentafusp) 200 micrograms/ mL concentrate for solution for infusionImmunocore Limited · emc · SmPC §5.1 Pharmacodynamic properties · Version 1Document updated 4 July 2022

Sources checked 8 November 2026

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