Open Access

Novel variants identified in a three‑generation family with concomitant exotropia

  • Authors:
    • Jiaxun Li
    • Yishi Ma
    • Wentao Zhou
    • Wenchao Lyu
    • Liming Wang
    • Song Mao
    • Jin Li
    • Xuefeng Shi
  • View Affiliations

  • Published online on: September 23, 2022     https://doi.org/10.3892/etm.2022.11624
  • Article Number: 688
  • Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Concomitant exotropia is a condition where there is a misalignment between both eyes, which is more prevalent in Asians than in Caucasians. It is an eye disease related to the neural development of binocular vision and eye movement control. Studies have indicated that genetic factors contribute to the development of concomitant exotropia; however, the underlying mutations have not been thoroughly investigated to date. In the present study, whole‑exome sequencing was performed in a three‑generation family with concomitant exotropia. In the proband and the proband's father, bioinformatics analyses identified a duplication of the genomic region spanning genes PCDHA1‑7 and a heterozygous mutation c.3775G>A (p.A1259T) of the COL3A1 gene, which is located in the conserved COLFI domain and leads to decreased stability of the encoded protein product. Furthermore, a deletion of amino acid S165 in the gene NCOA7 was discovered in the family members, including the proband, the proband's mother and maternal grandfather. S165 was predicted to be a conserved phosphokinase site of CK1/VRK and CK1/CK1. The genes in which these variants reside are all involved in cortical neuronal development. The present study reveals novel variants of concomitant exotropia and suggests that aberrant cortical neuronal development may contribute to the origin of concomitant strabismus.
View Figures
View References

Related Articles

Journal Cover

November-2022
Volume 24 Issue 5

Print ISSN: 1792-0981
Online ISSN:1792-1015

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Li J, Ma Y, Zhou W, Lyu W, Wang L, Mao S, Li J and Shi X: Novel variants identified in a three‑generation family with concomitant exotropia. Exp Ther Med 24: 688, 2022
APA
Li, J., Ma, Y., Zhou, W., Lyu, W., Wang, L., Mao, S. ... Shi, X. (2022). Novel variants identified in a three‑generation family with concomitant exotropia. Experimental and Therapeutic Medicine, 24, 688. https://doi.org/10.3892/etm.2022.11624
MLA
Li, J., Ma, Y., Zhou, W., Lyu, W., Wang, L., Mao, S., Li, J., Shi, X."Novel variants identified in a three‑generation family with concomitant exotropia". Experimental and Therapeutic Medicine 24.5 (2022): 688.
Chicago
Li, J., Ma, Y., Zhou, W., Lyu, W., Wang, L., Mao, S., Li, J., Shi, X."Novel variants identified in a three‑generation family with concomitant exotropia". Experimental and Therapeutic Medicine 24, no. 5 (2022): 688. https://doi.org/10.3892/etm.2022.11624