与RBP4相关的眼部形的临床,遗传和生物化学特征

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Julie Plaisancié^1,2,3, Jelena Martinovic⁴, Bertrand Chesneau^5,3

¹Laboratoire National de Référence (LBMR), Génétique des anomalies malformatives de l'œil, CHU Toulouse, Toulouse, France plaisancie.j@chu-toulouse.fr.

Journal of medical genetics

|August 16, 2023

概括

视网膜结合蛋白4 (RBP4) 基因中的致病变体会导致明显的眼睛形和视网膜退化. 母亲的RBP4基因型影响疾病的严重程度,血液中的RBP4水平可能有助于变体分类.

科学领域:

遗传学遗传学是一个
眼科医生眼科眼科
生物化学生物化学

背景情况:

视网膜酸 (RA) 途径对眼睛发育和视力至关重要.
视网醇结合蛋白4 (RBP4) 的致病变体导致眼睛的不同表型.
衰退型RBP4变异与视网膜退化有关,而主导型变异会导致微眼病,无眼病和结肠瘤 (MAC).

研究的目的:

调查MAC患者RBP4变异的基因型-表型相关性.
探索母亲RBP4基因型在疾病表达中的作用.
评估血清视网醇结合蛋白水平对于变种分类的有用性.

主要方法:

临床评估七个家庭 (13名患者) 的孤立和综合征性MAC.
具有异性RBP4变异的患者的生物化学分析.
对遗传模式和基因型-表型相关性的分析.

主要成果:

确定了7个具有异构RBP4变异导致MAC的新家族.
主导的错误RBP4变种与眼部形有关,而衰退的截断变种导致视网膜退化.
母亲RBP4基因型显著影响MAC的发生和严重程度,这表明母亲的影响.

结论:

主导错误RBP4变异导致MAC的不完全透和母性遗传,可能通过主导负机制.
血清RBP4水平可以作为分类RBP4变异的生物标志物.
了解RBP4变异为人们提供了有关RA途径障碍和眼部发育的见解.

关键词:

眼睛疾病眼睛疾病遗传学,医学医学人类遗传学人类遗传学继承模式继承模式眼科医生眼科眼科

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