International Ophthalmology

, Volume 39, Issue 9, pp 2057–2067 | Cite as

Chromosomal microarray analysis of patients with Duane retraction syndrome

  • Leyla NiyazEmail author
  • Sengul Tural
  • Ozlem Eski Yucel
  • Ertuğrul Can
  • Nursen Ariturk
  • Zulfinaz B. Celik
  • Esra Tekcan
  • Nurten Kara
Original Paper



Duane retraction syndrome (DS) is a rare congenital strabismus with genetic heterogeneity. The genetic causes of DS are not always of monogenic origin; various chromosomal copy number variations (CNVs) have also been reported. The objective of our study was to characterize the CNVs, including gains and losses detected by high-resolution chromosomal microarray in patients with DS.


Twenty patients with DS were investigated using high-resolution chromosomal microarray analysis (CMA) (Affymetrix CytoScan Array 750 K). Conventional cytogenetic analysis was also performed.


All samples revealed normal karyotype by cytogenetic analysis. However, in all our patients, multiple CNVs, including gains and losses, were detected using the high-resolution CMA method. Chromosomal loci 1q21.2, 2p11.2–q11.1, 2q21.1–q21.2, 4p16.1, 7p11.2–q11.21, 14q32.33, 17p11.2–q11.1 and 20p11.1–q11.21 were the most frequently affected regions.


This study emphasized that CNVs in several chromosomal regions are known to be involved in DS. We also underscore the genetic heterogeneity of DS. Our suggestion is that genes located in the most frequently affected regions should be focused on in the following candidate gene studies.


Duane retraction syndrome Chromosomal microarray (CMA) Copy number variation (CNV) 



This study was supported by the Ondokuz Mayis University Research Foundation (PYO.TIP.1901.15.002). The funding organization had no role in the design or conduct of this research.

Compliance with ethical standards

Conflict of interest

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Department of Ophthalmology, Faculty of MedicineOndokuz Mayis UniversitySamsunTurkey
  2. 2.Department of Medical Biology and Genetics, Faculty of MedicineOndokuz Mayis UniversitySamsunTurkey

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