Such is the case with a mouse form of Rett syndrome that has helped to identify a promising new treatment for people.

这里就有这么一个患雷特氏症的老鼠例子，这种老鼠已经被用来帮助找到一种有前景的治疗此病的新方法。

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Young girls who have Rett syndrome gradually stop responding to and interacting with their parents at about six to 18 months of age.

BBC: News | Health | Scientists crack secret of child disease

Rosie McLoughlin, 14, who had Rett syndrome, died at her home in Liverpool in the early hours surrounded by her relatives, a family spokesman said.

BBC: Coleen Rooney's sister Rosie dies

Compounds in preclinical tests target cystic fibrosis (30, 000 people plus a thousand new cases per year), Huntington's disease (30, 000 cases) and Rett syndrome, a rare inherited brain disorder.

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