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Prevalence of CARD15/NOD2 mutations in Caucasian healthy people.

Abstract

BACKGROUND

Crohn's disease (CD) has been associated with CARD15/NOD2 mutations in Caucasians. The R702W, G908R, and 1007fs mutations represent 82% of the mutated chromosomes. The relative risk of developing CD in homozygous or compound heterozygous people has been estimated as between 10 and 40 times that of the general population. This high risk may support the opinion that CARD15/NOD2 variants are strong CD risk factors at the individual and population levels.

SUBJECTS AND METHODS

The allele and genotype frequencies were calculated for the R702W, G908R, and 1007fs mutations in 3,575 Caucasian healthy controls recruited by 15 groups distributed on three continents. Geographic homogeneity was tested and the observed proportion of double mutants was compared with the expected value using chi2 tests.

RESULTS

The allele frequencies of the R702W, G908R, and 1007fs mutations were 4.3% (3.6-4.9), 1.2% (0.8-1.6), and 2.3% (1.8-2.8), respectively, with large geographic fluctuations of the G908R, 1007fs, and wild-type alleles (P<0.0001). At the population level, no simple relationship was observed between mutation frequencies and the disease incidences in the studied populations. At the individual level, no significant deficit of double-dose mutation carriers among healthy controls was found, providing strong evidence that the penetrances of the most at-risk genotypes are low.

CONCLUSION

Altogether, these data confirm that CARD15/NOD2 acts in interaction with other unknown risk cofactors.

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  • Authors+Show Affiliations

    ,

    INSERM Avenir U763; AP-HP; Université Paris 7, Hôpital Robert Debré, Paris, France.

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    Source

    MeSH

    Crohn Disease
    Europe
    European Continental Ancestry Group
    Gene Frequency
    Humans
    Mutation
    Nod2 Signaling Adaptor Protein
    Prevalence
    Risk Factors
    United States

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    17319929

    Citation

    Hugot, Jean-Pierre, et al. "Prevalence of CARD15/NOD2 Mutations in Caucasian Healthy People." The American Journal of Gastroenterology, vol. 102, no. 6, 2007, pp. 1259-67.
    Hugot JP, Zaccaria I, Cavanaugh J, et al. Prevalence of CARD15/NOD2 mutations in Caucasian healthy people. Am J Gastroenterol. 2007;102(6):1259-67.
    Hugot, J. P., Zaccaria, I., Cavanaugh, J., Yang, H., Vermeire, S., Lappalainen, M., ... Parkes, M. (2007). Prevalence of CARD15/NOD2 mutations in Caucasian healthy people. The American Journal of Gastroenterology, 102(6), pp. 1259-67.
    Hugot JP, et al. Prevalence of CARD15/NOD2 Mutations in Caucasian Healthy People. Am J Gastroenterol. 2007;102(6):1259-67. PubMed PMID: 17319929.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Prevalence of CARD15/NOD2 mutations in Caucasian healthy people. AU - Hugot,Jean-Pierre, AU - Zaccaria,Isabelle, AU - Cavanaugh,Juleen, AU - Yang,Huiying, AU - Vermeire,Séverine, AU - Lappalainen,Maarit, AU - Schreiber,Stefan, AU - Annese,Vito, AU - Jewell,Derek P, AU - Fowler,Elizabeth V, AU - Brant,Steven R, AU - Silverberg,Mark S, AU - Cho,Judy, AU - Rioux,John D, AU - Satsangi,Jack, AU - Parkes,Miles, AU - ,, Y1 - 2007/02/23/ PY - 2007/2/27/pubmed PY - 2007/7/14/medline PY - 2007/2/27/entrez SP - 1259 EP - 67 JF - The American journal of gastroenterology JO - Am. J. Gastroenterol. VL - 102 IS - 6 N2 - BACKGROUND: Crohn's disease (CD) has been associated with CARD15/NOD2 mutations in Caucasians. The R702W, G908R, and 1007fs mutations represent 82% of the mutated chromosomes. The relative risk of developing CD in homozygous or compound heterozygous people has been estimated as between 10 and 40 times that of the general population. This high risk may support the opinion that CARD15/NOD2 variants are strong CD risk factors at the individual and population levels. SUBJECTS AND METHODS: The allele and genotype frequencies were calculated for the R702W, G908R, and 1007fs mutations in 3,575 Caucasian healthy controls recruited by 15 groups distributed on three continents. Geographic homogeneity was tested and the observed proportion of double mutants was compared with the expected value using chi2 tests. RESULTS: The allele frequencies of the R702W, G908R, and 1007fs mutations were 4.3% (3.6-4.9), 1.2% (0.8-1.6), and 2.3% (1.8-2.8), respectively, with large geographic fluctuations of the G908R, 1007fs, and wild-type alleles (P<0.0001). At the population level, no simple relationship was observed between mutation frequencies and the disease incidences in the studied populations. At the individual level, no significant deficit of double-dose mutation carriers among healthy controls was found, providing strong evidence that the penetrances of the most at-risk genotypes are low. CONCLUSION: Altogether, these data confirm that CARD15/NOD2 acts in interaction with other unknown risk cofactors. SN - 0002-9270 UR - https://www.unboundmedicine.com/medline/citation/17319929/full_citation L2 - http://Insights.ovid.com/pubmed?pmid=17319929 DB - PRIME DP - Unbound Medicine ER -