Many centuries ago, the physician Hippocrates took an oath to prevent diseases and treat the sick. Millennia have passed, but his testament is not only not a bit outdated, but has become even more relevant. Modern technologies have helped people prevent many diseases, change their course and make life easier for people suffering from them, and methods of preventing these diseases have come to be called prevention. If this happens and a person gets sick, then he needs qualified medical care that can slow down the development of the disease and give the person a chance of survival or complete recovery. Today there is a lot of talk about rare diseases. In some cases they may be incurable. But there are diseases from which a person can be saved. It is about such a rare anomaly -