text_1: 有 SPTLC1 p . Cys133Trp 变异 体 ( 也 与 脱氧 鞘 脂 水平 高 相关 18 ) 的 2 例 HSAN1A 患者 ( 患者 2 和 患者 3 ) 被 确定 为 未 患 2 型 黄斑 毛细血管 扩张 症 .
  
text_2: the two patients with HSAN1A who had the SPTLC1 p.Cys133Trp variant ( Patient 2 and Patient 3 ) , which is also associated with high deoxysphingolipid levels , 18 were designated as not affected with macular telangiectasia type 2 .
  