期刊
PIGMENT CELL & MELANOMA RESEARCH
卷 29, 期 2, 页码 141-162出版社
WILEY
DOI: 10.1111/pcmr.12435
关键词
Iris colour; high-resolution photographs; central heterochromia; single-nucleotide polymorphisms; association; ancestry
资金
- 3-yr Natural Sciences and Engineering Research Council (NSERC) CGSD award
- Ontario Graduate Scholarship (OGS)
- NSERC Discovery Grant
In this study, we present a new quantitative method to measure iris colour based on high-resolution photographs. We applied this method to analyse iris colour variation in a sample of individuals of East Asian, European and South Asian ancestry. We show that measuring iris colour using the coordinates of the CIELAB colour space uncovers a significant amount of variation that is not captured using conventional categorical classifications, such as 'brown', 'blue' or 'green'. We tested the association of a selected panel of polymorphisms with iris colour in each population group. Six markers showed significant associations with iris colour in the European sample, three in the South Asian sample and two in the East Asian sample. We also observed that the marker HERC2 rs12913832, which is the main determinant of 'blue' versus 'brown' iris colour in European populations, is also significantly associated with central heterochromia in the European sample.
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