Dr. Henry: So ... what are the actual outcomes of your patients in terms of how they’re doing, engrafting, and getting cured of their malignancy?
Dr. Sung: So as I mentioned, we first did this in a phase 1 safety and feasibility pilot study of both autologous and allo-transplant patients. This was presented at the annual meeting of the American Society of Hematology [Blood. 2017;130:745]. And we’re actually about ready to submit our manuscript on this.
And we found no difference in outcomes between patients who received care in the home transplant setting versus those who received conventional care either in the day hospital or hospital environment. The process appeared safe. Patients did just as well, if not better. Certainly, anecdotally, patients would talk about feeling so much more comfortable and happier being cared for in that home environment.
And we are now in the process of formally studying these outcomes in two NIH [National Institutes of Health]-funded clinical trials, one focused on allogeneic transplant patients [NCT02218151] and the other focused on autologous transplant patients [NCT01725022].
Dr. Henry: So of course, I’m waiting for this next question, which is cost. The services are the same, but you have people traveling, people who are highly skilled caregivers. Have you looked at cost differences from hospital versus home?
Dr. Sung: Absolutely. So you do have increased upfront costs because you have travel time for advanced practice providers and nurses. Not only that, but when a nurse is helping to give a patient a blood transfusion in the home environment, they’re 1:1 with that patient as opposed to the day hospital where a nurse could help with transfusions simultaneously for multiple patients. At the same time, by keeping patients out of the hospital, you have drastic, significant cost savings in that way.
In addition, I should mention, part of why we’re conducting these randomized, phase 2 clinical trials is we believe home care actually has the potential to decrease complications. One area of my research is on the impact of the microbiome, the bacteria in the gut, on transplant outcomes. And we’ve done a number of studies, many in collaboration with Memorial Sloan Kettering, showing that disruption of the microbiota, the bacteria in the gut, is associated with increased infections, graft-versus-host disease, and treatment-related mortality if we’re able to keep patients in their home setting.
However, I actually should go back a step. It’s well known that, if you take an individual from their home setting and put them in a foreign environment such as the hospital, that new environment, that new diet, hospital food as opposed to home food, and so forth, can dramatically shift the microbiome. Our hypothesis is that, by keeping patients in the home environment, their familiar environment will be able to help preserve their microbiome, thus decreasing infections, graft-versus-host disease, and other complications. That’s actually the goal of our studies: to see if we can preserve the microbiome and decrease complications.