Based on the provided sources, there is no specific information regarding dietary restrictions with lurbinectedin. The sources primarily focus on the drug's approval, mechanism of action, and its efficacy in treating metastatic small cell lung cancer. However, it is important to note that these sources may not provide comprehensive information on all possible interactions or restrictions.

To ensure the safe and effective use of lurbinectedin, it is always recommended to consult with a healthcare professional or a pharmacist. They can provide specific guidance based on an individual's medical history, current medications, and any potential interactions with food or other substances.

Sources:
[1] Drug Patent Watch. (n.d.). Lurbinectedin. Retrieved from https://www.drugpatentwatch.com/p/tradename/LURBINECTEDIN
[2] U.S. Food and Drug Administration. (2020). FDA grants accelerated approval to lurbinectedin for metastatic small cell lung cancer. Retrieved from https://www.fda.gov/drugs/drug-approvals-and-databases/fda-grants-accelerated-approval-lurbinectedin-metastatic-small-cell-lung-cancer
[3] De Oliveira, M., et al. (2021). Lurbinectedin in the treatment of solid tumors: an update on its mechanism of action, clinical efficacy and safety. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532454/