So first of all, we have all along worked through the MRD endpoint, right? If you look at all the CAR-T program trials, everyone has MRD measurement in the trial built-in. Like I mentioned just on the call today, in CARTITUDE-6, we actually have already designed the trial with MRD negativity as a co-primary endpoint with all this in our mind.
So if you look at ODAC recommendation, right, the ODAC voted to recommend a 12-month MRD negativity as a potential endpoint. Right now, we don't expect FDA to publish the official guidance documents, but we do plan to engage with the agency to talk about the endpoint for CARTITUDE-5 and 6. And for CARTITUDE-5, it probably would make a small difference because anyway, we expect the readout to be in 2026.
Now for a CARTITUDE-6, it could make a big difference because if you look at our disclosure on clinicaltrials.gov, primary completion is estimated at 2033. Now if FDA does agree upon the 12-month MRD negativity in combination, for example, with CR or any other endpoint as a potential endpoint for accelerated approval. Then we can make that much, much faster in terms of the process, right? Because if we can complete all the enrollments for CARTITUDE-6 by end of next year, which is end of '25 then if the 12-month MRD negativity is amenable at the endpoint, that means potentially by end of 2026, we could have that kind of read out, right? So it does help a lot for frontline trials.
Now if you look at competition, I mean, I think in second line based on our experience, it doesn't change too much, right? Because the median PFS for our control was about 12 months. So I wanted to complete the enrollment, the readout shouldn't take that much longer. So I don't think there's a huge difference if you look at the second line or third line. But for frontline, it does make a significant difference here.
In terms of the bar, I don't think there is a quantitative bar here that the regulators have already determined at this point. But you can follow our disclosure from CARTITUDE-4, CARTITUDE-2, CARTITUDE-1 trial, right? In general, we achieved a very high MRD negativity rate. In fact, at ASH last year, we even published the data from CARTITUDE-1.
If you look at patients who achieved 6, 12 months or even longer than 12 months MRD negativity in combination of CR, those patients tend to have a very good prognosis in terms of longer-term PFS and survival. So we do have data from the CARTITUDE program to show that if a patient can achieve complete response in combination with some sort of longer-term MRD negativity, that is a very good predictive marker for a long-term outcome here.