MYH9 障碍 (Epstein 综合征和 Fechtner综合 征)
体征/症状 易淤血和出血病史。家族史可提示常染色体显性遗传。[27]Heath KE, Campos-Barros A, Toren A, et al. Nonmuscle myosin heavy chain IIA mutations define a spectrum of autosomal dominant macrothrombocytopenias: May-Hegglin anomaly and Fechtner, Sebastian, Epstein, and Alport-like syndromes. Am J Hum Genet. 2001 Nov;69(5):1033-45.http://www.cell.com/ajhg/fulltext/S0002-9297(07)61319-6http://www.ncbi.nlm.nih.gov/pubmed/11590545?tool=bestpractice.com
检查 FBC 显示巨血小板减少症。由于 MYH9 基因突变。[27]Heath KE, Campos-Barros A, Toren A, et al. Nonmuscle myosin heavy chain IIA mutations define a spectrum of autosomal dominant macrothrombocytopenias: May-Hegglin anomaly and Fechtner, Sebastian, Epstein, and Alport-like syndromes. Am J Hum Genet. 2001 Nov;69(5):1033-45.http://www.cell.com/ajhg/fulltext/S0002-9297(07)61319-6http://www.ncbi.nlm.nih.gov/pubmed/11590545?tool=bestpractice.com[28]Pecci A, Panza E, Pujol-Moix N, et al. Position of nonmuscle myosin heavy chain IIA (NMMHC-IIA) mutations predicts the natural history of MYH9-related disease. Hum Mutat. 2008 Mar;29(3):409-17.http://www.ncbi.nlm.nih.gov/pubmed/18059020?tool=bestpractice.com
鳃-耳-肾综合征
体征/症状 常染色体显性遗传疾病,特征是听力损失,外、中和内耳结构性缺陷,鳃裂瘘或囊肿,以及肾脏疾病。该疾病具有低外显率和表达变异性,使其在某些病例中很难做出诊断。
检查 在正式测试中,听力损失可能是感音神经性、传导性或混合性。超声可见肾功能异常的范围从轻度发育不良到完全缺失。主要由于 EYA1 和 SIX1 基因突变。[29]Krug P, Morinière V, Marlin S, et al. Mutation screening of the EYA1, SIX1, and SIX5 genes in a large cohort of patients harboring branchio-oto-renal syndrome calls into question the pathogenic role of SIX5 mutations. Hum Mutat. 2011 Feb;32(2):183-90.http://www.ncbi.nlm.nih.gov/pubmed/21280147?tool=bestpractice.com