Cell Reports (May 2023)

Sequencing of 19,219 exomes identifies a low-frequency variant in FKBP5 promoter predisposing to high myopia in a Han Chinese population

  • Jianzhong Su,
  • Jian Yuan,
  • Liangde Xu,
  • Shilai Xing,
  • Mengru Sun,
  • Yinghao Yao,
  • Yunlong Ma,
  • Fukun Chen,
  • Longda Jiang,
  • Kai Li,
  • Xiangyi Yu,
  • Zhengbo Xue,
  • Yaru Zhang,
  • Dandan Fan,
  • Ji Zhang,
  • Hui Liu,
  • Xinting Liu,
  • Guosi Zhang,
  • Hong Wang,
  • Meng Zhou,
  • Fan Lyu,
  • Gang An,
  • Xiaoguang Yu,
  • Yuanchao Xue,
  • Jian Yang,
  • Jia Qu

Journal volume & issue
Vol. 42, no. 5
p. 112510

Abstract

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Summary: High myopia (HM) is one of the leading causes of visual impairment and blindness worldwide. Here, we report a whole-exome sequencing (WES) study in 9,613 HM cases and 9,606 controls of Han Chinese ancestry to pinpoint HM-associated risk variants. Single-variant association analysis identified three newly identified -genetic loci associated with HM, including an East Asian ancestry-specific low-frequency variant (rs533280354) in FKBP5. Multi-ancestry meta-analysis with WES data of 2,696 HM cases and 7,186 controls of European ancestry from the UK Biobank discerned a newly identified European ancestry-specific rare variant in FOLH1. Functional experiments revealed a mechanism whereby a single G-to-A transition at rs533280354 disrupted the binding of transcription activator KLF15 to the promoter of FKBP5, resulting in decreased transcription of FKBP5. Furthermore, burden tests showed a significant excess of rare protein-truncating variants among HM cases involved in retinal blood vessel morphogenesis and neurotransmitter transport.

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