October 12, 2014
As expected, the FDA just approved the first single-pill treatment for hepatitis C genotype 1, a tablet containing 400 mg of sofosbuvir (SOF) and 90 mg of ledipasvir (LDV). For those not following this story closely, sofosbuvir is the pan-genotypic NRTI polymerase inhibitor approved last December to much rejoicing -- and controversy about the price. Ledipasvir is the first HCV NS5A inhibitor, and is only available as part of this combination.
The brand name is "Harvoni," which sounds a bit like an exotic offering on a menu that you need to ask your waiter to explain -- "Ancho chile-rubbed Niman Ranch pork chop roasted in soy, ginger, and sesame, served with pan-sauted garlic kale, and garnished with corn and pinapple-harvoni salsa."
But even though the approval was no surprise, and the brand name will (like all of them) take some getting used to, there's no denying this is a huge step forward for HCV therapy. Let me list some of the reasons:
So yahoo. This is instantly a treatment of choice -- and for now, the treatment of choice -- for genotype 1 patients, and no doubt the HCV treatment guidelines will say as much when they're revised. I'm not on the guidelines panel, just stating the obvious: the amount of supporting clinical trials data for SOF/LDV combination is vastly greater than the simeprevir-sofosbuvir treatment, which is already listed.
As with any new medical treatment, there are a few issues and questions to address with SOF/LDV -- so let's start with the elephant in the exam room, the cost.
The list price of this combination therapy for 12 weeks will be around $95,000, which means the ledipasvir component is priced around the same as 12 weeks of interferon/ribavirin -- and substantially less than the current price of simeprevir. I've gone over before the various issues on the cost of HCV treatment -- it totally depends on your perspective. It's either incredible value for what your getting (a virtual guarantee of HCV cure, with no side effects!), or horribly too much ($95,000! That's over $1100/pill!).
Regardless, SOF/LDV is already one-third cheaper and more effective than HCV treatment was last week with SIM/SOF, and will cost even less if the patient qualifies for 8 weeks of treatment. We'll see how this all shakes out when the next interferon-free drug regimen gets approved later this year. I'm referring, of course, to the parataprevir/ritonavir/ombitasvir plus dasabuvir regimen, which is now so close to approval that all the drugs have real names. The guidelines committee will need to consider this one too when it's approved.
A few more items of note:
Finally, did the FDA consider cost when they recommended 24 weeks of treatment for treatment-experienced patients with cirrhosis? Probably not, since an 80% cure would leave just 20% who would need a longer course. In support of the 24 week up front course of SOF/LDV, however, is that we don't really have a proven approach to treatment failures yet (24 weeks of the same treatment with RBV? 24 weeks of SIM-SOF? Other?) Additionally, this is the group of patients who need HCV treatment most urgently.
Enjoy this video, I sure did.
Paul Sax is Clinical Director of Infectious Diseases at Brigham and Women's Hospital. His blog HIV and ID Observations is part of Journal Watch, where he is Editor-in-Chief of Journal Watch AIDS Clinical Care.
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