Up until four years ago, the only method for treating people with Phenylketonuria (PKU) was the low-protein diet. I remember being a young girl and my mother telling me that the second there was a cure, she would immediately sign me up. Nowadays, we still don’t have a cure, but we do have the first prescription drug for the treatment of PKU. It’s called Kuvan and it was developed by a pharmaceutical company called BioMarin. Here’s a brief video clip from the U.S. Food and Drug Administration announcing its approval.
Unfortunately, Kuvan doesn’t work for everyone, so before you can receive a prescription, you are required to go through trial to see if you actually respond to the medication. I will be starting my Kuvan trial this week and here’s how it breaks down:
- I should be receiving my package of Kuvan on Monday (that’s tomorrow)
- Then on Thursday, I’ll start keeping a very specific food diary (notepad icon). I’m not yet on the low-protein diet, but my clinic advised that as long as I consume close to the same amount of protein each day then we should be in good shape. Otherwise, it would be impossible to tell if Kuvan was working or if I just ate less protein.
- In addition to the food diary, I also have to take 7 blood samples (red circles). The blood work is pretty intensive in the beginning, but that’s to make sure we get a good baseline reading.
- Then about three days into the trial, I’ll start taking my Kuvan (yellow circles). The number of pills you take depends on your body weight. I was prescribed to take 13 pills. I need to take Kuvan at about the same time every day and with food since it is acidic and can cause stomach problems.
At the end of the trial, we should know whether I have responded to Kuvan or not. I have some concerns about possible side effects, some of which can be very serious, and I haven’t made any final decisions whether I will take Kuvan even if I am a responder. I am confident that I will not take Kuvan during any pregnancies. Nonetheless, the more information I have, then the better my decisions will be.
Stay tuned and I’ll let you know how it goes!