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  • Title: [Knobloch syndrome: a case report].
    Author: Liu QY, Cui XH, Li Z, Shao Y, Xing DJ, Li WB, Li XR.
    Journal: Zhonghua Yan Ke Za Zhi; 2022 Jun 11; 58(6):457-459. PubMed ID: 35692029.
    Abstract:
    A 5-year-old girl came to the Tianjin Medical University Eye Hospital in May 2021 because of her poor eyesight after birth. The physical examination showed that she had high myopia, esotropia, horizontal tremor, and high myopia retinopathy of both eyes. After inquiring about her medical history, we found that the baby's occipital cystic mass swelled after birth, and CT examination showed that the occipital skull plate defect with meningocele, but without treatment, at present, the occipital mass had subsided by itself. Considering the eye manifestations and skull changes of the child, it may be conformed to Knobloch syndrome, after the detection of V4 by full exon gene, it was found that the child had the compound heterozygous variation of pathogenic gene COL18A1, and Knobloch syndrome was definite, Knobloch syndrome is a rare autosomal recessive hereditary disease with typical features of high myopia, retinal detachment and occipital encephalocele. At present, there is no clear treatment plan, and gene therapy may be an effective treatment for Knobloch syndrome in the future. 5岁女童因出生后发现双眼视力差于2021年5月就诊于天津医科大学眼科医院，体检提示：双眼高度近视、双眼内斜视、水平震颤、双眼底高度近视改变，追问病史后发现，患儿出生后头颅枕部囊性肿物膨出，查头颅CT提示：枕部颅板缺损伴脑膜膨出，未作治疗，目前枕部肿物已自行消退。考虑患儿的眼部表现及颅骨改变，可能符合Knobloch综合征，后经全外显子基因检测V4发现，患儿为致病基因COL18A1的复合杂合变异，Knobloch综合征明确，该综合征是一种罕见的常染色体隐性遗传性疾病，典型特征是高度近视、视网膜脱离和枕部脑膨出，目前尚无明确的治疗方案，基因治疗可能是未来应对Knobloch综合征的有效治疗手段。.
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