Guowei Fang
Analyst · Vikram Purohit of Morgan Stanley. Your line is now open
Hey, Vikram. So I'll answer the question about the new CBER leadership at FDA. So, we're happy to see that Dr. Prasad has been appointed the Director of CBER, which regulates all the cell and gene therapy approvals. First of all, we agree with Dr. Prasad's point that in any cancer trial you should use GO standard of survival benefit. And to that end, we're happy to report that, first of all, we will report long-term, minimum five-year follow-up from CARTITUDE-1, and you guys will see the data at ASCO. In fact, the abstract is coming out next week. So you will see the unprecedented benefit we bring to this population and that is survival, which is a hard endpoint. Right? Secondly, I think if you look at the history of CARVYKTI approval, we did secure FDA approval back in February of 2022 based on the primary endpoint of overall response rate. However, when we started the trial back in 2018, 2019, these patients have exhausted all the available therapy to them. So it represents a very significant unmet medical need by then. Today, of course you can argue things are different because you have two BCMA targeting CAR-T available as commercial therapy and three soon to be four antibodies again indicated for myeloma. So it's very different. But since we conducted that CARTITUDE-1, we have demonstrated the survival benefit. We have demonstrated the PFS, which is nearly three years from historically about four to five months in this patient population. So that is the hard evidence we demonstrated. And then thirdly, we also secured both FDA and also EMA approval based on PFS endpoint. However, in September of last year, we demonstrated again clinically meaningful and also statistically significant benefit in survival with a hazard ratio of 0.55, which means 45% improvement in survival from standard of care. So we think CARVYKTI comes with a very, very strong benefit in terms of clinical outcome, which survival. And then that's also accompanied by the surrogate endpoints such as PFS and overall response rate. Right? That is why Legend and also J&J stands by the best-in-class profile CARVYKTI. So we welcome Dr. Prasad as the CBER leadership because we have clearly demonstrated the survival benefit here. Now, I know there are questions from investors about MRD negativity. So we think that, given the support from ODAC last year, using MRD as a surrogate endpoint, we plan to sit down with the FDA to explore the possibility of using MRD activity as a potential endpoint for accelerated approval. We think this is a good setting in the first-line setting because as you know, today if a newly diagnosed multiple myeloma patient is treated, expect survival is probably over five to seven years. Therefore, in this setting, a surrogate endpoint makes perfect sense. Now, in last line or even second line, if you look at our data from CAR-4, right, the standard for care had a PFS of shorter than one year. So in that setting, we're not sure whether a surrogate endpoint makes sense or not under the leadership of Dr. Prasad. As I mentioned again, we agree that in oncology settings survival should be the gold standard. And we're happy to report that CARVYKTI does bring that lifesaving benefit to patients.