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Genes That Cause Hereditary Disease PCH Discovered

Date:
August 21, 2008
Source:
University Of Cologne
Summary:
Scientists from Cologne and Amsterdam have discovered the mutations in humans that cause the hereditary disease ponto cerebellar hypoplasia (PCH), types 2 and 4.

Scientists from Cologne and Amsterdam have discovered the mutations in humans that cause the hereditary disease ponto cerebellar hypoplasia (PCH), types 2 and 4.

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“In the case of PCH, the protein complex – the so-called tRNA-Splicing-Endonuclease, is mutated. This complex in involved in the manufacture of proteins in the human body and was identified in connection with a disease for the first time,” reports Birgit Budde from the Cologne Center for Genomics and Institute for Genetics of the University of Cologne.

The disease PCH occurs when certain areas of the brain do not develop properly; this results in severe mental and physical developmental disorders. Life expectancy of those affected ranges from a few months to a few years.

PCH2 was first described as a syndrome in 1990 with reference to persons affected who came from the Dutch fishing village Volendam. Due to historical reasons, the village became isolated and remained so over centuries; the inhabitants began to marry close relatives. This resulted in a conspicuously high amount of cases of the illness in this village, as PCH usually only occurs, when both parents pass on the predisposition for this disease.

Families from Volendam were the starting point for the present study. In the mean time, cases of the disease have been discovered in other parts of Europe. Based on these, scientists have been able to prove that the majority of the cases of PCH2, including those of the village of Volendam, have a common ancestor. This common ancestor lived during the 17th century.

The results of the most recent research will be published in the journal Nature Genetics.

“The identification of mutations, which cause PCH2 and PCH4, is an important step in the research of ponto cerebellar hypoplasia,” according to Dr. Budde.


Story Source:

The above story is based on materials provided by University Of Cologne. Note: Materials may be edited for content and length.


Cite This Page:

University Of Cologne. "Genes That Cause Hereditary Disease PCH Discovered." ScienceDaily. ScienceDaily, 21 August 2008. <www.sciencedaily.com/releases/2008/08/080819160421.htm>.
University Of Cologne. (2008, August 21). Genes That Cause Hereditary Disease PCH Discovered. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2008/08/080819160421.htm
University Of Cologne. "Genes That Cause Hereditary Disease PCH Discovered." ScienceDaily. www.sciencedaily.com/releases/2008/08/080819160421.htm (accessed November 28, 2014).

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