TY - JOUR
T1 - A meta-analysis identifies adolescent idiopathic scoliosis association with LBX1 locus in multiple ethnic groups
AU - Londono, Douglas
AU - Kou, Ikuyo
AU - Johnson, Todd A
AU - Sharma, Swarkar
AU - Ogura, Yoji
AU - Tsunoda, Tatsuhiko
AU - Takahashi, Atsushi
AU - Matsumoto, Morio
AU - Herring, John A
AU - Lam, Tsz-Ping
AU - Wang, Xingyan
AU - Tam, Elisa M S
AU - Song, You-Qiang
AU - Fan, Yan-Hui
AU - Chan, Danny
AU - Cheah, Kathryn S E
AU - Qiu, Xusheng
AU - Jiang, Hua
AU - Huang, Dongsheng
AU - TSRHC IS Clinical Group, null
AU - International Consortium for Scoliosis Genetics, null
AU - Su, Peiqiang
AU - Sham, Pak
AU - Cheung, Kenneth M C
AU - Luk, Keith D K
AU - Gordon, Derek
AU - Qiu, Yong
AU - Cheng, Jack
AU - Tang, Nelson
AU - Ikegawa, Shiro
AU - Wise, Carol A
AU - Japanese Scoliosis Clinical Research Group
AU - Dahl, Benny
N1 - Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
PY - 2014/6
Y1 - 2014/6
N2 - BACKGROUND: Adolescent idiopathic scoliosis (AIS) is a common rotational deformity of the spine that presents in children worldwide, yet its etiology is poorly understood. Recent genome-wide association studies (GWAS) have identified a few candidate risk loci. One locus near the chromosome 10q24.31 LBX1 gene (OMIM #604255) was originally identified by a GWAS of Japanese subjects and replicated in additional Asian populations. To extend this result, and to create larger AIS cohorts for the purpose of large-scale meta-analyses in multiple ethnicities, we formed a collaborative group called the International Consortium for Scoliosis Genetics (ICSG).METHODS: Here, we report the first ICSG study, a meta-analysis of the LBX1 locus in six Asian and three non-Asian cohorts.RESULTS: We find significant evidence for association of this locus with AIS susceptibility in all nine cohorts. Results for seven cohorts containing both genders yielded P=1.22×10-43 for rs11190870, and P=2.94×10-48 for females in all nine cohorts. Comparing the regional haplotype structures for three populations, we refined the boundaries of association to a ∼25 kb block encompassing the LBX1 gene. The LBX1 protein, a homeobox transcription factor that is orthologous to the Drosophila ladybird late gene, is involved in proper migration of muscle precursor cells, specification of cardiac neural crest cells, and neuronal determination in developing neural tubes.CONCLUSIONS: Our results firmly establish the LBX1 region as the first major susceptibility locus for AIS in Asian and non-Hispanic white groups, and provide a platform for larger studies in additional ancestral groups.
AB - BACKGROUND: Adolescent idiopathic scoliosis (AIS) is a common rotational deformity of the spine that presents in children worldwide, yet its etiology is poorly understood. Recent genome-wide association studies (GWAS) have identified a few candidate risk loci. One locus near the chromosome 10q24.31 LBX1 gene (OMIM #604255) was originally identified by a GWAS of Japanese subjects and replicated in additional Asian populations. To extend this result, and to create larger AIS cohorts for the purpose of large-scale meta-analyses in multiple ethnicities, we formed a collaborative group called the International Consortium for Scoliosis Genetics (ICSG).METHODS: Here, we report the first ICSG study, a meta-analysis of the LBX1 locus in six Asian and three non-Asian cohorts.RESULTS: We find significant evidence for association of this locus with AIS susceptibility in all nine cohorts. Results for seven cohorts containing both genders yielded P=1.22×10-43 for rs11190870, and P=2.94×10-48 for females in all nine cohorts. Comparing the regional haplotype structures for three populations, we refined the boundaries of association to a ∼25 kb block encompassing the LBX1 gene. The LBX1 protein, a homeobox transcription factor that is orthologous to the Drosophila ladybird late gene, is involved in proper migration of muscle precursor cells, specification of cardiac neural crest cells, and neuronal determination in developing neural tubes.CONCLUSIONS: Our results firmly establish the LBX1 region as the first major susceptibility locus for AIS in Asian and non-Hispanic white groups, and provide a platform for larger studies in additional ancestral groups.
KW - Adolescent
KW - Asian Continental Ancestry Group
KW - Female
KW - Genome-Wide Association Study
KW - Homeodomain Proteins
KW - Humans
KW - Linkage Disequilibrium
KW - Male
KW - Polymorphism, Single Nucleotide
KW - Scoliosis
KW - Transcription Factors
U2 - 10.1136/jmedgenet-2013-102067
DO - 10.1136/jmedgenet-2013-102067
M3 - Journal article
C2 - 24721834
SN - 0022-2593
VL - 51
SP - 401
EP - 406
JO - Journal of Medical Genetics
JF - Journal of Medical Genetics
IS - 6
ER -