> For the complete documentation index, see [llms.txt](https://doc.duaer.com/zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/zh/getting-started/variants.md).

# 在 Duaer 里检索变异

在 Duaer 里用 Duaer Data 检索变异（ClinVar / dbSNP）。一次成功查询 1 额度。本页含完整英文调用技能。
## 能拿到什么

Duaer 数据市场里的「变异」检索公开变异记录。一次成功查询 1 额度。

从节点创建器的 [Duaer 数据分类](/zh/getting-started/duaer-data.md) 选「变异」，或打开 [数据市场](/zh/getting-started/data-market.md) 复制技能。基因符号可先在 [基因](/zh/getting-started/genes.md) 查。

## 在画布里检索

1. 打开节点创建器，点「Duaer 数据」，再选「变异」。
2. 用 Words 即可（新节点默认 rs113488022）。rs ID、Gene、Variant ID 可选。
3. Limit 默认 10，最大 20。点执行此步骤。

成功扣 1 额度。正式运行的交付进 [数据池](/zh/getting-started/data-pool.md)。

## 用 API 调用

- GET https://api.duaer.com/v1/data/variants?...
- Authorization: Bearer <Duaer key>
- 字段可组合；至少填一个检索字段。

密钥见 [Duaer 公开 API 的身份验证](/zh/api/authentication.md)。下方是与「复制技能」相同的英文技能。

## 调用技能（英文）

与数据市场「复制技能」一致。正文保持英文。

```
---
name: duaer-variants
description: >-
  Search variants through Duaer (ClinVar / dbSNP via MyVariant.info).
  One successful search uses 1 Duaer credit.
---

# Duaer variants

Search variants through Duaer with a Duaer key.

## Call

`GET https://api.duaer.com/v1/data/variants?q=rs113488022&limit=10`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

At least one search field is required. Fields combine.
Search with `q`, `rsid`, or `gene` first; use `id` only when you already have an HGVS genomic id from a result.

- `q` — words such as an rs id (`rs113488022`).
- `rsid` — optional. dbSNP rs id, such as `rs113488022`.
- `gene` — optional. Gene symbol with ClinVar annotations, such as `BRAF`. Look up symbols with https://skills.duaer.com/genes.md.
- `id` — optional. HGVS genomic id from a result (`variantId`), such as `chr7:g.140453136A>T`.
- `limit` — optional. From 1 to 20. Default 10.

## Result

Each item has `source`, `title`, `url`, `summary`, `variantId`, `rsid`, `gene`, `hgvsProtein`, `clinicalSignificance`, `chrom`, `ref`, and `alt`.
Reuse `variantId` in `id` for an exact lookup.

## Credits

One successful search uses 1 credit.
An empty search, a failed search, a compound that matches nothing, or no remaining credits uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

```
## Questions

### 变异编号用在哪里？

把结果里的 variantId 填回 Duaer 变异的 Variant ID，做精确查询。

## 相关

- [在 Duaer 里检索基因](https://doc.duaer.com/zh/getting-started/genes.md)
- [在 Duaer 里检索基因和蛋白](https://doc.duaer.com/zh/getting-started/proteins.md)
- [在 Duaer 里检索疾病](https://doc.duaer.com/zh/getting-started/diseases.md)
- [在 Duaer 里检索通路](https://doc.duaer.com/zh/getting-started/pathways.md)