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Updated: Jun 27, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
A novel frameshift mutation in FRMD7 causing X-linked idiopathic congenital nystagmus
1Department of Genetics, National Research Institute for Family Planning, Beijing, China.
Abstract:
Idiopathic congenital nystagmus (ICN) is a common oculomotor disorder characterized by bilateral involuntary, periodic, and predominantly ocular oscillations. X-linked ICN (XLICN) with incomplete penetrance in females is the most common inheritance form, and FERM domain containing (FRMD7) mutation is the major reason for XLICN families. To date, 39 FRMD7 mutations have been identified, and 50% of the XLICN pedigrees have yielded FRMD7 mutations in the Western population. In this study, we identified a novel frameshift mutation (c.1274-1275delTG) in the FRMD7 gene in six XLICN pedigrees. Incorporated with data reported from other two Chinese groups, approximately 47% XLICN pedigrees were caused by the FRMD7 mutation in China. Therefore, this study showed that mutation analysis of the FRMD7 gene had diagnostic value not only in the Western population but also in one of the biggest Eastern populations, Chinese XLICN families. In addition, the results indicated the type of FRMD7 mutation associated with the penetrance of female carriers of XLICN.
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Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
X-linked Traits
X-linked Traits

