Lurbinectedin is a novel anticancer drug that has shown promising results in the treatment of various types of cancer, including small cell lung cancer, ovarian cancer, and others. However, there are currently no drugs that are exactly comparable to lurbinectedin in terms of their chemical structure and mechanism of action [3].

According to DrugPatentWatch, there are no other drugs with the same active ingredient as lurbinectedin [1]. However, there are other drugs that are used to treat the same types of cancer as lurbinectedin. For example, for the treatment of small cell lung cancer, the standard chemotherapy regimen includes drugs such as cisplatin and etoposide [3]. For ovarian cancer, the standard treatment includes surgery and chemotherapy with drugs such as carboplatin and paclitaxel [3].

Drugs.com provides a comparison tool for drugs, and according to their database, there are no drugs that are directly comparable to lurbinectedin in terms of their chemical structure or mechanism of action [2]. However, the website does provide a list of alternative drugs that are used to treat the same types of cancer as lurbinectedin, such as cisplatin and etoposide for small cell lung cancer and carboplatin and paclitaxel for ovarian cancer [2].

In conclusion, while there are no drugs that are exactly comparable to lurbinectedin in terms of their chemical structure and mechanism of action, there are alternative drugs that are used to treat the same types of cancer as lurbinectedin. These drugs include cisplatin and etoposide for small cell lung cancer and carboplatin and paclitaxel for ovarian cancer [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LURBINECTEDIN
[2] https://www.drugs.com/compare/lurbinectedin
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9671549/