Lurbinectedin is a chemotherapy drug used to treat small cell lung cancer. According to the sources provided, allergic reactions to lurbinectedin are possible, but they are not listed as a common side effect. The FDA label [2] notes that hypersensitivity reactions, including anaphylaxis, have been reported with the use of lurbinectedin. Patients should be monitored closely for signs of allergic reactions during treatment. Symptoms of an allergic reaction can include hives, difficulty breathing, swelling of the face, lips, tongue, or throat, and severe dizziness. If any of these symptoms occur, patients should seek immediate medical attention. It is important to note that this is not a complete list of side effects, and patients should consult with their healthcare provider for more information about potential side effects of lurbinectedin.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LURBINECTEDIN
[2] https://www.accessdata.fda.gov/drugsatfda_docs/label/2020/213702s000lbl.pdf
[3] https://www.mskcc.org/cancer-care/patient-education/medications/lurbinectedin