---
title: "Regeneron and CytomX extend cancer therapy partnership to $4bn deal"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/288701126.md"
description: "Regeneron and CytomX have extended their cancer therapy partnership to a $4 billion deal. The collaboration combines CytomX’s Probody technology with Regeneron’s Veloci-Bi platform to develop conditionally active bispecific antibodies for hard-to-treat tumors. Under the new terms, Regeneron funds all activities, while CytomX receives a $37 million nomination payment for two targets, with options for six more, plus royalties and milestones."
datetime: "2026-06-04T08:21:36.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/288701126.md)
  - [en](https://longbridge.com/en/news/288701126.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/288701126.md)
---

# Regeneron and CytomX extend cancer therapy partnership to $4bn deal

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