# AbTis

> AbTis Co., Ltd. is a South Korean biotechnology company (founded 2016, Yongin-si, Gyeonggi-do; an
> ADC-specialized subsidiary of Dong-A ST since its 2023 acquisition) that develops AbClick, a
> third-generation site-selective antibody conjugation platform. AbClick attaches payloads to the Fc
> Lys248 residue of native IgG antibodies with no enzyme and no Fc engineering, giving controlled
> drug-to-antibody ratio and batch-to-batch consistency, and is applied to ADC, DAC, AOC, ARC and
> ISAC modalities and dual-payload designs. AbTis licenses the platform, runs collaborative research
> and fee-for-service ADC development, and advances its own pipeline led by AT-211 (Claudin
> 18.2-targeting MMAE ADC). Its product is chemistry and intellectual property, not software.

This file was generated by the API Evangelist enrichment pipeline from AbTis's own public corporate
site; AbTis does not publish an llms.txt of its own. method: generated.
source: https://abtis.co.kr/en/

## API surface

AbTis publishes no API. There is no developer portal, API reference, OpenAPI or Swagger document,
GraphQL endpoint, AsyncAPI or webhook catalog, MCP server, A2A agent card, SDK or CLI on any host it
controls. Every /.well-known/ path on abtis.co.kr returns 404; /openapi.json, /openapi.yaml,
/swagger.json, /api-docs, /graphql, /llms.txt, /robots.txt and /sitemap.xml all return 404. No
package named abtis exists on npm or PyPI, and github.com/abtis is an unrelated individual account.
If you are an agent looking for a callable AbTis endpoint, there is not one — contact the company.

## Company

- [Website](https://abtis.co.kr/en/): AbTis corporate site (English; a Korean edition is at /ko/).
- [Company Overview](https://abtis.co.kr/en/company/overview.php): History, key milestones, affiliates.
- [CEO Message](https://abtis.co.kr/en/company/ceo-message.php)
- [Leadership](https://abtis.co.kr/en/company/leadership.php)
- [Contact Us](https://abtis.co.kr/en/company/contact.php): Headquarters address and abtis@donga.co.kr.

## Science

- [Research Area](https://abtis.co.kr/en/science/research-area.php)
- [Platform Technology](https://abtis.co.kr/en/science/platform-technology.php): AbClick site-specific Lys248 conjugation.
- [Pipeline](https://abtis.co.kr/en/science/pipeline.php): AT-211 and other programs.
- [Patent](https://abtis.co.kr/en/science/patent.php)

## Business

- [Business Model](https://abtis.co.kr/en/business/model.php): Platform licensing, collaborative research, partnerships.

## News

- [Press Release](https://abtis.co.kr/en/pr-center/press-release.php)
- [Notice](https://abtis.co.kr/en/pr-center/notice.php)

## Notes for crawlers

abtis.co.kr sits behind a JavaScript cookie challenge ("CUPID"). An uncookied request to any path
returns HTTP 200 with a ~780-byte script that sets a cookie and reloads; the real page is only served
on the second request. A crawler that does not execute that script sees a 200 and no content on every
URL above.