Mysterious 'Viking disease' linked to Neanderthal DNA

Neanderthal genes may be one cause of the disorder nicknamed the "Viking disease," in which fingers become frozen in a bent position, a new study finds.
The study, published June 14 in the journal Molecular Biology and Evolution, finds gene variants that were inherited from Neanderthals that dramatically increase the odds of developing the condition, officially called Dupuytren's disease.,
Dupuytren's disease is a crippling hand disorder named after a French surgeon, in which the fingers, typically the ring and little fingers, become permanently locked in a bent position. The condition is very common in Northern European countries where the Vikings settled, hence its nickname. It typically afflicts about 30% of men over 60 years in Northern Europe and seems to run in families. Treatment is mainly surgical, but recurrence is common. Although smoking, alcoholism, diabetes and anti-seizure medication can increase the odds of developing the disease, the exact cause has remained elusive.