Population history modulates the fitness effects of Copy Number Variation in the Roma

被引:1
|
作者
Antinucci, Marco [1 ]
Comas, David [1 ]
Calafell, Francesc [1 ]
机构
[1] Univ Pompeu Fabra, Inst Evolutionary Biol UPF CSIC, Dept Med & Life Sci, Barcelona, Spain
关键词
DELETERIOUS GENETIC-VARIATION; STRUCTURAL VARIATION; R/BIOCONDUCTOR PACKAGE; POTENTIAL INVOLVEMENT; VARIATION INSIGHTS; SEQUENCE VARIANTS; FOUNDER MUTATION; SUSCEPTIBILITY; DELETION; GYPSIES;
D O I
10.1007/s00439-023-02579-5
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
We provide the first whole genome Copy Number Variant (CNV) study addressing Roma, along with reference populations from South Asia, the Middle East and Europe. Using CNV calling software for short-read sequence data, we identified 3171 deletions and 489 duplications. Taking into account the known population history of the Roma, as inferred from whole genome nucleotide variation, we could discern how this history has shaped CNV variation. As expected, patterns of deletion variation, but not duplication, in the Roma followed those obtained from single nucleotide polymorphisms (SNPs). Reduced effective population size resulting in slightly relaxed natural selection may explain our observation of an increase in intronic (but not exonic) deletions within Loss of Function (LoF)-intolerant genes. Over-representation analysis for LoF-intolerant gene sets hosting intronic deletions highlights a substantial accumulation of shared biological processes in Roma, intriguingly related to signaling, nervous system and development features, which may be related to the known profile of private disease in the population. Finally, we show the link between deletions and known trait-related SNPs reported in the genome-wide association study (GWAS) catalog, which exhibited even frequency distributions among the studied populations. This suggests that, in general human populations, the strong association between deletions and SNPs associated to biomedical conditions and traits could be widespread across continental populations, reflecting a common background of potentially disease/trait-related CNVs.
引用
收藏
页码:1327 / 1343
页数:17
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