Regeneron Sitemap

Regeneron’s COVID-19 Response Efforts

Error 404: Page Not Found | Regeneron Corporate

About Regeneron | Our Company

Privacy Notice | Regeneron

Regeneron Genetics Center® (RGC™) | Genetics to Therapeutics

Stories Library | Regeneron

Regeneron | Research & Development

Regeneron | Pushing the Bounds of Science

Regeneron Collaborations | Business Development Partnerships

When specifying accessible names via `aria-labelledby`, ensure that the 
label elements exist.

## Explanation

Accessible names are required for many parts of a page, including form controls.
One way to accomplish this is to use `aria-labelledby` to specify the ID or IDs of 
other elements which contain a label. For example:

```html
<h2 id="dialog-labell">Important message!</h2>
<dialog aria-labelledby="dialog-label">
```

In this example, the `aria-labelledby` for the `<dialog>` points to an ID of `dialog-label`,
which doesn't exist. The heading it refers to instead has an ID of `dialog-labell`, presumably 
a typo.

## Why this matters

It isn't usually clear when an accessible name is broken, even during user testing.

This check helps to identify where an element clearly intended to have a label, but
that label is missing.

When a label is broken, it may be impossible for a user of assistive technologies
to understand what that element does.

missing-aria-labelled-by

December 2025

November 2025

Regeneron Pharmaceuticals

Title / URL	Issues
Regeneron Sitemapwww.regeneron.com/sitemap	4
Regeneron’s COVID-19 Response Effortswww.regeneron.com/covid19	4
Error 404: Page Not Found \| Regeneron Corporatewww.regeneron.com/Error/StatusCodeError/404	4
About Regeneron \| Our Companywww.regeneron.com/about/our-company	4
Privacy Notice \| Regeneronwww.regeneron.com/privacy-notice	4
Regeneron Genetics Center® (RGC™) \| Genetics to Therapeuticswww.regeneron.com/science/genetics-center	4
Stories Library \| Regeneronwww.regeneron.com/stories/library	4
Regeneron \| Research & Developmentwww.regeneron.com/science/research-development	4
Regeneron \| Pushing the Bounds of Sciencewww.regeneron.com/	4
Regeneron Collaborations \| Business Development Partnershipswww.regeneron.com/about/collaborations	4

Fix missing ARIA label IDs

Regeneron Pharmaceuticals

Where this issue has occurred