eLife (Nov 2019)

Novel genetic loci affecting facial shape variation in humans

  • Ziyi Xiong,
  • Gabriela Dankova,
  • Laurence J Howe,
  • Myoung Keun Lee,
  • Pirro G Hysi,
  • Markus A de Jong,
  • Gu Zhu,
  • Kaustubh Adhikari,
  • Dan Li,
  • Yi Li,
  • Bo Pan,
  • Eleanor Feingold,
  • Mary L Marazita,
  • John R Shaffer,
  • Kerrie McAloney,
  • Shu-Hua Xu,
  • Li Jin,
  • Sijia Wang,
  • Femke MS de Vrij,
  • Bas Lendemeijer,
  • Stephen Richmond,
  • Alexei Zhurov,
  • Sarah Lewis,
  • Gemma C Sharp,
  • Lavinia Paternoster,
  • Holly Thompson,
  • Rolando Gonzalez-Jose,
  • Maria Catira Bortolini,
  • Samuel Canizales-Quinteros,
  • Carla Gallo,
  • Giovanni Poletti,
  • Gabriel Bedoya,
  • Francisco Rothhammer,
  • André G Uitterlinden,
  • M Arfan Ikram,
  • Eppo Wolvius,
  • Steven A Kushner,
  • Tamar EC Nijsten,
  • Robert-Jan TS Palstra,
  • Stefan Boehringer,
  • Sarah E Medland,
  • Kun Tang,
  • Andres Ruiz-Linares,
  • Nicholas G Martin,
  • Timothy D Spector,
  • Evie Stergiakouli,
  • Seth M Weinberg,
  • Fan Liu,
  • Manfred Kayser,
  • On behalf of the International Visible Trait Genetics (VisiGen) Consortium

DOI
https://doi.org/10.7554/eLife.49898
Journal volume & issue
Vol. 8

Abstract

Read online

The human face represents a combined set of highly heritable phenotypes, but knowledge on its genetic architecture remains limited, despite the relevance for various fields. A series of genome-wide association studies on 78 facial shape phenotypes quantified from 3-dimensional facial images of 10,115 Europeans identified 24 genetic loci reaching study-wide suggestive association (p < 5 × 10−8), among which 17 were previously unreported. A follow-up multi-ethnic study in additional 7917 individuals confirmed 10 loci including six unreported ones (padjusted < 2.1 × 10−3). A global map of derived polygenic face scores assembled facial features in major continental groups consistent with anthropological knowledge. Analyses of epigenomic datasets from cranial neural crest cells revealed abundant cis-regulatory activities at the face-associated genetic loci. Luciferase reporter assays in neural crest progenitor cells highlighted enhancer activities of several face-associated DNA variants. These results substantially advance our understanding of the genetic basis underlying human facial variation and provide candidates for future in-vivo functional studies.

Keywords