Evidence map›Paper›PMID 22190362›Full record

ArticleAnnals of neurology2011

Rare variants in the CYP27B1 gene are associated with multiple sclerosis.

Sreeram V Ramagopalan, David A Dyment, M Zameel Cader, Katie M Morrison, Giulio Disanto, Julia M Morahan, Antonio J Berlanga-Taylor, Adam Handel, Gabriele C De Luca, A Dessa Sadovnick and 3 more

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In one paragraph

Article in Annals of neurology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed, 1 pooled it
20.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

105 citing papers in PubMed, 1 synthesis or guideline pooled it, 228 citations in OpenAlex.

  1. Pooled it
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  5. Article
  6. Identification and Association ofCurrent issues in molecular biology · 2025
    Article
  7. Multiple sclerosis: molecular pathogenesis and therapeutic intervention.Signal transduction and targeted therapy · 2025
    Review
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  16. Genomic mechanisms controlling renal vitamin D metabolism.The Journal of steroid biochemistry and molecular biology · 2023
    Article
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  19. Article
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45 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 5 institutions in 2 countries.

Sreeram V RamagopalanWellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom.
David A Dyment
M Zameel Cader
Katie M Morrison
Giulio Disanto
Julia M Morahan
Antonio J Berlanga-Taylor
Adam Handel
Gabriele C De Luca
A Dessa Sadovnick
Pierre Lepage
Alexandre Montpetit
George C Ebers
University of Oxford · GBCentre for Human Genetics · GBMcGill University and Génome Québec Innovation Centre · CAUniversity of British Columbia · CAUniversity of Ottawa · CA

Funding

Wellcome Trust 075491/Z/04
6 · The paper itself

Abstract

objectiveMultiple sclerosis (MS) is a complex neurological disease. Genetic linkage analysis and genotyping of candidate genes in families with 4 or more affected individuals more heavily loaded for susceptibility genes has not fully explained familial disease clustering.

methodsWe performed whole exome sequencing to further understand the heightened prevalence of MS in these families.

resultsForty-three individuals with MS (1 from each family) were sequenced to find rare variants in candidate MS susceptibility genes. On average, >58,000 variants were identified in each individual. A rare variant in the CYP27B1 gene causing complete loss of gene function was identified in 1 individual. Homozygosity for this mutation results in vitamin D-dependent rickets I (VDDR1), whereas heterozygosity results in lower calcitriol levels. This variant showed significant heterozygous association in 3,046 parent-affected child trios (p = 1 × 10(-5)). Further genotyping in >12,500 individuals showed that other rare loss of function CYP27B1 variants also conferred significant risk of MS, Peto odds ratio = 4.7 (95% confidence interval, 2.3-9.4; p = 5 × 10(-7)). Four known VDDR1 mutations were identified, all overtransmitted. Heterozygous parents transmitted these alleles to MS offspring 35 of 35× (p = 3 × 10(-9)).

interpretationA causative role for CYP27B1 in MS is supported; the mutations identified are known to alter function having been shown in vivo to result in rickets when 2 copies are present. CYP27B1 encodes the vitamin D-activating 1-alpha hydroxylase enzyme, and thus a role for vitamin D in MS pathogenesis is strongly implicated.

Indexed as

Genetic Predisposition to Disease25-Hydroxyvitamin D3 1-alpha-HydroxylaseAge of OnsetCohort StudiesExomeFamily HealthFemaleGene FrequencyGenetic Association StudiesGenetic LinkageGenotypeHumansMaleMultiple SclerosisMutationVitamin D Deficiency25-Hydroxyvitamin D3 1-alpha-Hydroxylase

Identifiers

PMID22190362
OpenAlexW2018668951

What OpenQuestion holds

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Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.