CURE lately sat down for an interview with researcher Dr. Marina Kremyanskaya to debate the present remedy panorama for sufferers with polycythemia vera (PV), a blood most cancers characterised by extreme purple blood cell manufacturing. This kind of most cancers can also be labeled as a myeloproliferative neoplasm (MPN), a sort of blood most cancers affecting the bone marrow.
Kremyanskaya is the lead investigator of the
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What’s the present normal of take care of sufferers who’re newly recognized with PV?
There are just a few completely different pathways that we may take. Sometimes, we take a look at a affected person and decide which danger class they match into. Considerably artificially, sufferers are divided into two teams: low danger and excessive danger, and that is actually based mostly on their danger of thrombosis, which means blood clots, sooner or later. It’s largely determined based mostly on their age. At 60 years previous, sufferers are thought of excessive danger, and if they’re youthful than that, they’re thought of low danger. A further danger issue is a earlier historical past of blood clots, so if sufferers have none of that, they’re thought of low danger.
The everyday remedy is therapeutic phlebotomy. Principally, we bodily take away a few of the blood from the affected person in a course of comparable to what’s executed when folks donate blood. The rationale for that is that blood counts are very excessive, which places sufferers at the next danger for thrombosis. It has been proven that by lowering the blood rely, particularly the purple blood cells, we will cut back their danger of thrombosis. Thrombosis, on this case, will be something, for instance, coronary heart assaults, strokes, or blood clots within the legs, lungs, or different elements of the physique. These can have very critical penalties.
Sometimes, we even have sufferers take a low-dose aspirin as a light blood thinner to lower the danger of blood clots. If sufferers are increased danger, then along with phlebotomies, we’ve got just a few different remedy decisions. One among them is hydroxyurea, which works to cut back all blood counts. We have now been utilizing hydroxyurea for a lot of many years for various blood cancers, and it’s nonetheless generally utilized in PV. Different choices embrace interferon, which is available in just a few completely different formulations and is given as injections, and Jakafi (ruxolitinib), a more recent drug that could be a JAK inhibitor. Jakafi is extra of a biologic remedy that particularly targets the activated pathway seen in these issues.
Whereas there are just a few completely different decisions, phlebotomy stays the cornerstone of remedy. Though it seems like there are lots of choices, the truth is that there are literally not that many.
Transcript has been edited for readability and conciseness.
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