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产前遗传咨询具有不确定的SMA结果的挑战
Molly Spangenberg1, Laura Godfrey Hendon2, Dana H Goodloe1
1Department of Genetics, The University of Alabama at Birmingham, Birmingham, Alabama, USA.
Journal of genetic counseling
|April 3, 2025
概括
遗传咨询师面临的挑战是咨询不确定的脊髓肌缩 (SMA) 载体查结果,特别是患者的理解和提供者教育. 该研究强调需要改善资源和进一步研究来解决这些问题.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 医学遗传学 医学遗传学
背景情况:
- 脊髓肌肉缩 (SMA) 是一种自体逆性神经肌肉疾病,95%的病例是由SMN1基因的同胞性删除引起的.
- 一个 [2+0] 染色体配置,一个人有一个染色体上有两个SMN1基因拷贝,另一个染色体上没有,这复杂化了载体查,并可能导致不确定的结果.
- 非洲裔美国人和西班牙裔人口中[2+0]载体的流行率更高,2017年将SMA查纳入一般人口小组增加了不确定的结果.
研究的目的:
- 了解遗传咨询师在为不确定性SMA载体查结果提供咨询时所面临的实践和挑战.
- 专门研究非阿什基纳兹犹太 (AJ) 人口以及美国和加拿大不同地区的这些挑战.
主要方法:
- 在美国和加拿大的49名产前遗传咨询师进行了一项含有开放答案问题的定量调查.
- 分析了答案,以确定在咨询未确定SMA结果的患者时的共同挑战和主题.
主要成果:
- 遗传咨询师报告了重大挑战,包括患者的负面情绪和患者和转诊提供者的误解,无论地理区域如何.
- 主要挑战分为三个类别:与患者相关的问题,与提供者相关的问题,以及2017年扩大SMA载体查的影响.
- 定性数据强调了沟通复杂遗传信息的困难以及与不确定的SMA查结果相关的残留风险.
结论:
- 显然需要加强有关不确定的SMA结果的提供者教育,以提高咨询的有效性.
- 建议开发教育工具,如视觉辅助工具,以帮助辅导员解释这些复杂的结果.
- 需要进一步的研究来探索患者和转诊提供者的观点,以制定全面的支持策略.
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