Lurbinectedin is a chemotherapy drug used to treat certain types of cancer, including small cell lung cancer and ovarian cancer. According to the sources provided, hair loss is not listed as a common side effect of lurbinectedin [2]. However, it is important to note that chemotherapy drugs can cause hair loss, and this is a well-known side effect of many chemotherapy treatments [3].

The first source [1] provides information on the patent status of lurbinectedin, but does not provide any information on its side effects. The second source [2] is from the Mayo Clinic and provides a list of possible side effects of lurbinectedin, which include low blood cell counts, fatigue, nausea, and constipation. Hair loss is not mentioned in this list of side effects.

The third source [3] is a research article that discusses the use of lurbinectedin in the treatment of small cell lung cancer. The article mentions several potential side effects of the drug, including low blood cell counts, fatigue, and nausea, but again, hair loss is not listed as a side effect.

In conclusion, based on the sources provided, hair loss is not listed as a common side effect of lurbinectedin. However, it is important to note that chemotherapy drugs in general can cause hair loss, and patients should discuss any concerns about potential side effects with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LURBINECTEDIN
[2] https://www.mayoclinic.org/drugs-supplements/lurbinectedin-intravenous-route/side-effects/drg-20490804?p=1
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9469650/