3.9 Article

Nonsyndromic High Myopia in a Chinese Family Mapped to MYP1 Linkage Confirmation and Phenotypic Characterization

Journal

ARCHIVES OF OPHTHALMOLOGY
Volume 128, Issue 11, Pages 1473-1479

Publisher

AMER MEDICAL ASSOC
DOI: 10.1001/archophthalmol.2010.270

Keywords

-

Categories

Funding

  1. National Natural Science Foundation of China [30772390]
  2. Natural Science Foundation of Guangdong Province [7001571, 8251008901000020]
  3. National Science Fund for Distinguished Young Scholars [30725044]

Ask authors/readers for more resources

Objective: To identify the genetic locus for X-linked non-syndromic high myopia in a large Chinese family. Methods: Phenotypic information and DNA samples were collected from 19 individuals in a Chinese family; 7 had high myopia and 12 were unaffected. We performed a linkage scan on the X chromosome and sequenced several candidate genes. Results: High myopia in this family, presenting since early childhood and ranging from -6.00 to -15.00 diopters of sphere, is consistent with an X-linked recessive trait. The presence of a normal optic disc and the absence of color visual defects and other systemic abnormalities indicated that high myopia in this family is nonsyndromic. Our linkage analysis mapped the disease locus to Xq28, a 6.1-cM region between DXS8069 and Xqter, with 2-point logarithm of odds scores greater than 2.0 for 5 markers and a maximum logarithm of odds score of 3.59 at theta=0 for 2 markers. Sequence analysis of coding and adjacent intronic regions of GPR50, PRRG3, CNGA2, and BGN did not identify any potential causative mutation. Conclusions: Nonsyndromic high myopia in a Chinese family was mapped to the MYP1 region, which confirmed and refined this region for high myopia. In addition, our results suggest that color visual defects and optic disc hypoplasia are not necessary signs of high myopia attributed to the MYP1 region. Clinical Relevance: MYP1 is a common and the best locus for positional cloning of the gene responsible for high myopia. Our results suggest that MYP1 is also responsible for nonsyndromic high myopia.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

3.9
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Ophthalmology

Clinical and genetic features of retinoschisis in 120 families with RS1 mutations

Sainan Xiao, Wenmin Sun, Xueshan Xiao, Shiqiang Li, Hualei Luo, Xiaoyun Jia, Jiamin Ouyang, Xueqing Li, Yingwei Wang, Yi Jiang, Panfeng Wang, Qingjiong Zhang

Summary: Almost all rare RS1 variants were found to be potential pathogenic, with all patients with RS1 pathogenic variants showing detectable characteristics in the macula and/or peripheral retina. These findings may be valuable for clinical diagnosis and genetic testing of retinoschisis.

BRITISH JOURNAL OF OPHTHALMOLOGY (2023)

Article Ophthalmology

Genetic and clinical landscape of ARR3-associated MYP26: the most common cause of Mendelian early-onset high myopia with a unique inheritance

Yingwei Wang, Xueshan Xiao, Xueqing Li, Zhen Yi, Yi Jiang, Fengsheng Zhang, Lin Zhou, Shiqiang Li, Xiaoyun Jia, Wenmin Sun, Panfeng Wang, Qingjiong Zhang

Summary: This study elucidates the genetic background of early-onset high myopia (eoHM) and the characteristics of ARR3-associated MYP26. It reveals that ARR3 is the most frequently implicated gene for Mendelian eoHM, with mutations leading to mild cone impairment and progression to pathologic myopia.

BRITISH JOURNAL OF OPHTHALMOLOGY (2023)

Article Genetics & Heredity

Truncation mutations in MYRF underlie primary angle closure glaucoma

Jiamin Ouyang, Wenmin Sun, Huangxuan Shen, Xing Liu, Yingchen Wu, Hongmei Jiang, Xueqing Li, Yingwei Wang, Yi Jiang, Shiqiang Li, Xueshan Xiao, J. Fielding Hejtmancik, Zhiqun Tan, Qingjiong Zhang

Summary: Mutations in MYRF gene are associated with high hyperopia and may contribute to the development of angle closure glaucoma. MYRF is highly expressed in the ciliary body and ganglion cell layer, and mutations in MYRF result in elevated intraocular pressure and thinning of the retinal nerve fiber layer.

HUMAN GENETICS (2023)

Article Biochemistry & Molecular Biology

Variant Landscape of 15 Genes Involved in Corneal Dystrophies: Report of 30 Families and Comprehensive Analysis of the Literature

Di Zhu, Junwen Wang, Yingwei Wang, Yi Jiang, Shiqiang Li, Xueshan Xiao, Panfeng Wang, Qingjiong Zhang

Summary: This study describes the variant landscape of 15 genes responsible for corneal dystrophies (CDs) in Chinese families. Pathogenic or likely pathogenic variants were detected in 4 of the 15 genes in 30 of the 37 families with CDs. Comparative analysis revealed that some previously reported variants are unlikely causative of CDs. The study highlights the importance of understanding frequently misinterpreted variants in genomic medicine.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2023)

Review Biochemistry & Molecular Biology

New Insight into the Genotype-Phenotype Correlation of PRPH2-Related Diseases Based on a Large Chinese Cohort and Literature Review

Yingwei Wang, Junwen Wang, Yi Jiang, Di Zhu, Jiamin Ouyang, Zhen Yi, Shiqiang Li, Xiaoyun Jia, Xueshan Xiao, Wenmin Sun, Panfeng Wang, Qingjiong Zhang

Summary: Variants in PRPH2 were analyzed in this study using online prediction tools and large datasets. Ten pathogenic or likely pathogenic variants were identified in 14 families, with p.G305Afs*19 being the most frequent variant. The study proposed novel insights into the genotype-phenotype correlation of PRPH2.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2023)

Article Genetics & Heredity

Non-Pharmaceutical Interventions against COVID-19 Causing a Lower Trend in Age of LHON Onset

Yuxi Zheng, Xiaoyun Jia, Shiqiang Li, Xueshan Xiao, Qingjiong Zhang, Panfeng Wang

Summary: During the COVID-19 pandemic, the onset of Leber hereditary optic neuropathy (LHON) changed and new risk factors were identified. The age of LHON onset decreased significantly during this period, and secondhand smoke exposure and mask-wearing were found to be independent risk factors for younger LHON onset.

GENES (2023)

Article Genetics & Heredity

FDXR-Associated Oculopathy: Congenital Amaurosis and Early-Onset Severe Retinal Dystrophy as Common Presenting Features in a Chinese Population

Shutong Yi, Yuxi Zheng, Zhen Yi, Yingwei Wang, Yi Jiang, Jiamin Ouyang, Shiqiang Li, Xueshan Xiao, Wenmin Sun, Panfeng Wang, Qingjiong Zhang

Summary: Variants in FDXR are associated with autosomal recessive auditory neuropathy and optic atrophy, expanding to retinal dystrophy. This study identified 11 unrelated patients with biallelic pathogenic or likely pathogenic FDXR variants, including 10 novel missense variants. Clinical data revealed severe optic atrophy, retinal degeneration, and various retinal vascular abnormalities in these patients. Biallelic FDXR variants are a common cause of congenital or early-onset severe retinal dystrophy, particularly in patients with optic atrophy and retinal dystrophy in early childhood.

GENES (2023)

Review Genetics & Heredity

A case of LSS-associated congenital nuclear cataract with hypotrichosis and literature review

Dongwei Guo, Qingjiong Zhang

Summary: Congenital cataract is a common cause of visual loss in children worldwide, and it is genetically and phenotypically heterogeneous. The LSS gene plays a role in cholesterol biosynthesis and has been linked to various conditions including congenital cataract and hypotrichosis. This study identified LSS variants in a 12-year-old boy with congenital nuclear cataract and hypotrichosis, expanding our understanding of LSS gene and providing insights for genetic counseling.

AMERICAN JOURNAL OF MEDICAL GENETICS PART A (2023)

Article Cell & Tissue Engineering

Generation of an induced pluripotent stem cell line (ZSZOCi001-A) from a patient with Knobloch syndrome caused by biallelic mutations in the gene COL18A1

Zixuan Jiang, Wenmin Sun, Qingjiong Zhang, Panfeng Wang

Summary: Knobloch syndrome is an autosomal recessive disorder characterized by high myopia, retinal detachment, and occipital skull defects. Mutations in the COL18A1 gene have been identified to cause KNO1. Here, we successfully generated a human induced pluripotent stem cell (hiPSC) line from the peripheral blood mononuclear cells (PBMCs) of a KNO patient caused by COL18A1 biallelic pathogenic variants, and this iPSC model offers a precious disease model to study the pathological mechanism and possible treatment of KNO in vitro.

STEM CELL RESEARCH (2023)

Review Genetics & Heredity

Clinical and Genetic Features of NR2E3-Associated Retinopathy: A Report of Eight Families with a Longitudinal Study and Literature Review

Sainan Xiao, Zhen Yi, Xueshan Xiao, Shiqiang Li, Xiaoyun Jia, Ping Lian, Wenmin Sun, Panfeng Wang, Lin Lu, Qingjiong Zhang

Summary: This study analyzed the clinical characteristics and prognosis of autosomal dominant retinopathy (ADRP) and autosomal recessive retinopathy (ARRP) associated with NR2E3. Nine pathogenic variants/likely pathogenic variants in NR2E3 were detected, including five novel variants. Follow-up data showed schisis/atrophy in the macula and retinal degeneration initiation around the vascular arcades in both ADRP and ARRP, but ADRP patients had better visual acuity and later onset age compared to ARRP patients.

GENES (2023)

Article Immunology

Retinopathy as an initial sign of hereditary immunological diseases: report of six families and challenges in eye clinic

Yingwei Wang, Yi Jiang, Junwen Wang, Shiqiang Li, Xiaoyun Jia, Xueshan Xiao, Wenmin Sun, Panfeng Wang, Qingjiong Zhang

Summary: This study identified six patients who presented with retinopathy as their initial symptom of HID, contrary to previous reports where retinopathy was an accompanying symptom of systemic HID.

FRONTIERS IN IMMUNOLOGY (2023)

Article Ophthalmology

Unique Haplotypes in OPN1LW as a Common Cause of High Myopia With or Without Protanopia: A Potential Window Into Myopic Mechanism

Yingwei Wang, Wenmin Sun, Xueshan Xiao, Yi Jiang, Jiamin Ouyang, Junwen Wang, Zhen Yi, Shiqiang Li, Xiaoyun Jia, Panfeng Wang, J. Fielding Hejtmancik, Qingjiong Zhang

Summary: This study aimed to identify the contribution of OPN1LW to early-onset high myopia (eoHM) and the molecular basis underlying eoHM with or without colorblindness. Unique haplotypes and truncation variants in OPN1LW were found exclusively in 68 of 1226 families with eoHM, but not in 9304 families with other visual diseases. Four classes of variants were identified, which cause partial or complete loss of red photopigments. The study provides evidence that eoHM with or without colorblindness are caused by different variants in OPN1LW.

INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE (2023)

Article Ophthalmology

The Genetic Confirmation and Clinical Characterization of LOXL3-Associated MYP28: A Common Type of Recessive Extreme High Myopia

Yi Jiang, Lin Zhou, Yingwei Wang, Jiamin Ouyang, Shiqiang Li, Xueshan Xiao, Xiaoyun Jia, Junwen Wang, Zhen Yi, Wenmin Sun, Xiaodong Jiao, Panfeng Wang, J. Fielding Hejtmancik, Qingjiong Zhang

Summary: The study aims to elucidate the clinical and genetic features of LOXL3-associated MYP28. Through exome sequencing, LOXL3 biallelic variants were exclusively identified in 9 families with eoHM. Patients with biallelic LOXL3 variants showed early-onset high myopia, slow progression, and specific fundus changes.

INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE (2023)

Article Ophthalmology

Missense Mutations in MAB21L1: Causation of Novel Autosomal Dominant Ocular BAMD Syndrome

Panfeng Wang, Pengsen Wu, Junwen Wang, Yiyan Zeng, Yi Jiang, Yingwei Wang, Shiqiang Li, Xueshan Xiao, Qingjiong Zhang

Summary: This study reports a new autosomal dominant ocular syndrome (BAMD) syndrome caused by monoallelic MAB21L1 pathogenic variants, which is completely different from COFG syndrome caused by biallelic variants in MAB21L1. The study suggests that heterozygous pathogenic variants in MAB21L1 account for the AD BAMD syndrome, and c.152 nucleotide is likely a mutation hot spot, with the residue p.Arg51 being critical for MAB21L1.

INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE (2023)

Article Biochemistry & Molecular Biology

Defect of TIMP4 Is Associated with High Myopia and Participates in Rat Ocular Development in a Dose-Dependent Manner

Wenhui Zhou, Zixuan Jiang, Zhen Yi, Jiamin Ouyang, Xueqing Li, Qingjiong Zhang, Panfeng Wang

Summary: This study systematically investigated the association between TIMPs and MMPs genes and early-onset high myopia (eoHM). Two LoF variants in the TIMP4 gene were found to be significantly associated with eoHM, and Timp4 defect was shown to influence ocular tissue morphology and function.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2023)

No Data Available