The most commonly reported side effects of loncastuximab include death, disease progression, and rash, based on 334 FDA adverse event reports from 2008 to 2025.
Percentages show how often each reaction appears relative to total reports for loncastuximab.
These are voluntary reports and do not establish that loncastuximab caused these reactions.
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Seriousness is determined by the reporter, not by OpenClaim.
Other drugs that appear in adverse event reports alongside loncastuximab. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.
Also suspected
Taken alongside
Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.
29.3% of loncastuximab adverse event reports involve female patients and 47.6% involve male patients. The largest age group is adult at 52%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking loncastuximab when the adverse event was reported.
Showing 15 of 30 indications
Loncastuximab is sold under the brand name Zynlonta.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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