Phenylketonuria: Treatment and Support

Debate between Liz Twist and George Howarth

Tuesday 26th June 2018 Westminster Hall

[Liz Twist]

I certainly do join the hon. Lady in that wish. I too have met BioMarin, which says it is prepared to negotiate significantly on the price, but we need to get in there and ensure that it happens quickly.

[Mr George Howarth (Knowsley) (Lab)]

I congratulate my hon. Friend not only on securing this debate, but on the knowledgeable and passionate way in which she is putting the case. Does she agree that this is an example of the way that we in this country are very bad at dealing with rare conditions and potential therapies or treatments for them? Does she believe that, while this needs to be hurried up, the whole process needs to be streamlined and sped up?

[Liz Twist]

I certainly agree with my right hon. Friend. It has become clear, as we have looked into the issue, that there is a very complex way of assessing drugs. Clearly, we want to get the process right, but there needs to be a rigorous look at that process, not just for Kuvan, but for other treatments for rare diseases. PKU perhaps falls between the cracks, because it is not quite rare enough to be in that group, but it is still very rare, and will be pushed to the back of the queue if it goes into a more general group.

For those whom Kuvan will not help, and who still need to manage their diet carefully, there is another issue that must be addressed: access to low-protein foods, which help to maintain the diet. Individuals may be advised through their dietician and their specialist centre that they need a particular level of foodstuff supplies, such as the low-protein flour I mentioned, which I am told can be used in many ways to try to make the diet more palatable. General practitioners, however, may not have a complete understanding of the condition or the dietary needs, and may feel that patients are just trying to get food on the cheap, and they may limit or deny prescriptions for those foodstuffs. They may feel that they are like gluten-free foods, which can be bought at supermarkets.

The fact is that those foods and supplements cannot be bought; they are available only on prescription, and the absence of them creates a real injury to those affected. It is not just that they are not there; it is actually damaging if they are not available. It would be good if the Minister could address how we can ensure that GPs prescribe the specialist foodstuffs that form part of the treatment that those with PKU need, and how we can close the gap between the specialist services, clinical commissioning groups and GPs.