According to the sources provided, there are currently no generic alternatives available for Kadcyla (ado-trastuzumab emtansine). Kadcyla is a brand-name medication used for the treatment of certain types of breast cancer [1][2][3]. It is an antibody-drug conjugate that combines the monoclonal antibody trastuzumab with a chemotherapy drug called DM1 [3].

Kadcyla is manufactured by Genentech, a subsidiary of Roche, and it is protected by patents that prevent the production of generic versions until these patents expire [1]. The drug was approved by the U.S. Food and Drug Administration (FDA) in 2013 [2].

It is important to note that while there are no generic alternatives to Kadcyla currently available, there may be other treatment options or alternative medications that can be prescribed by healthcare professionals. It is always recommended to consult with a healthcare provider for personalized advice and information regarding treatment options [3].

In conclusion, based on the provided sources, there are no generic alternatives to Kadcyla currently available. The medication is protected by patents, and it is manufactured by Genentech for the treatment of certain types of breast cancer [1][2][3].

Sources:
[1] DrugPatentWatch. (n.d.). Kadcyla Trademark Details. Retrieved from https://www.drugpatentwatch.com/p/biologics/tradename/KADCYLA
[2] Drugs.com. (n.d.). Kadcyla: Compare Prices and Check for Coupons. Retrieved from https://www.drugs.com/compare/kadcyla
[3] Medical News Today. (2021, April 27). What to know about Kadcyla. Retrieved from https://www.medicalnewstoday.com/articles/drugs-kadcyla