Infantile bilateral striatal necrosis maps to chromosome 19q

L. Basel-Vanagaite, R. Straussberg, H. Ovadia, A. Kaplan, N. Magal, Z. Shorer, H. Shalev, C. Walsh, M. Shohat

    Research output: Contribution to journalArticlepeer-review

    13 Scopus citations

    Abstract

    Background: Infantile bilateral striatal necrosis (IBSN) encompasses several syndromes of bilateral symmetric degeneration of the caudate nucleus, putamen, and globus pallidus. Autosomal recessive IBSN is characterized clinically by developmental arrest beginning at age 7 to 15 months, dysphagia, choreoathetosis, pendular nystagmus and optic atrophy, and severe progressive atrophy of the basal ganglia on MRI. Objective: To map the gene causing IBSN. Methods: A 10-cM genome-wide linkage scan was initially performed on five affected and five unaffected individuals. The extended family was included in the analysis to narrow the candidate region. Logarithm of odds (LOD) score was calculated using the SUPERLINK program. Results: Linkage to the chromosomal region 19q13.32-13.41 was established (Zmax = 6.27 at theta = 0.02 at locus D19S412). Recombination events and a common disease-bearing haplotype defined a critical region of 1.2 Mb between the loci D19S596 proximally and D19S867 distally. Conclusion: IBSN maps to the chromosomal region 19q13.32-13.41. The presence of a common haplotype in all the patients suggests that the disease is caused by a single mutation derived from a single ancestral founder in all the families.

    Original languageEnglish
    Pages (from-to)87-90
    Number of pages4
    JournalNeurology
    Volume62
    Issue number1
    DOIs
    StatePublished - 13 Jan 2004

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