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修正repeat sequence时跨越不同exon #16

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liserjrqlxue opened this issue Nov 25, 2021 · 3 comments
Open

修正repeat sequence时跨越不同exon #16

liserjrqlxue opened this issue Nov 25, 2021 · 3 comments
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@liserjrqlxue
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如果上游exon末端和下游exon首端序列相同,上游exon末端的变异会错误的识别为repeat sequence,基于3‘规则被移动到下游exon的首端。
示例输入:

9	37432131	37432133	TG	.

错误注释结果NM_012203.1:c.862TG[3>2] (std: c.862TG[2] alt: c.866_867delTG )
参考NM_012203.1:c.864_865delTG

Sequence "TG" at position 905_906 was not corrected to "TG" at position 907_908, since they reside in different exons.
@ltnetcase
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这个,确实比较纠结,按照 HGVS 的原则,注释是以对应的转录本,或者参考基因组为主体的,分别来注释是更合适的,一定要合并在一起考虑,还是带来了很多和原则的冲突。

@ltnetcase
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@liserjrqlxue 其实我比较好奇的是,这样的突变在基因组上是怎样的突变形态,如果是一个已经跨越了外显子边界,涵盖了全部的内含子的突变,最直接的预测是 span,不会进行 3‘most 变换吧?

@liserjrqlxue
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大概最开始是作为exon内的插入,后来解析的时候发现了序列相同进行滑动..

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