Genetic Diseases:?Its a disease that often strikes people in the prime of life, slowly destroying control over body, mind and personality. It inevitably kills the patient, but usually only after at least a decade of suffering. The underlying cause of Huntingtons disease – a dominant mutation on Chromosome IV – was discovered almost 25 years ago. Now the first trials to target the condition at its source have begun. Chances of finding a cure have never been more realistic.