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Genet Test Mol Biomarkers. 2012 Oct;16(10):1188-94. doi: 10.1089/gtmb.2012.0153. Epub 2012 Aug 27.

Translation of a research-based genetic test on a rare syndrome into clinical service testing, with sotos syndrome as an example.

Author information

  • 1Department of Medical Biochemistry and Genetics, Institute of Biomedicine, University of Turku, Turku, Finland. pia.pohjola@utu.fi

Abstract

BACKGROUND AND AIMS:

It is often the case that the genetic background of a rare disease has been solved, but the testing of a clinical patient can be performed only through research projects. Translating a research-based test into diagnostic service may also appear laborious and costly. Based on our molecular research of the genetics of Sotos syndrome, we developed a clinical laboratory test that is both effective and relatively inexpensive.

METHODS AND RESULTS:

Pilot testing was performed with samples of clinically diagnosed Sotos cases (n=13), and testing was continued with samples of patients who were suspected of having Sotos syndrome (n=161). The testing methods used were direct sequencing and multiplex ligation-dependent probe amplification. Sotos syndrome was a suitable example for test translation, because its genetic background was well established, and the demand for the test was expected to be fairly high. In the pilot phase, a mutation was detected in 12 out of 13 patients (92%), and in the second group, 49 out of 161 (30%) patients had a mutation in the NSD1 gene.

CONCLUSIONS:

In Sotos syndrome, detecting the mutation is valuable for the patient/family, while the value of a negative result is less clear and other differential diagnostic diagnoses should be considered. For successful translation of the research-based test into routine diagnostics, intense collaboration between clinicians, researchers, and diagnostic laboratory personnel is essential.

PMID:
22924495
[PubMed - indexed for MEDLINE]
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