---
title: "HENLIUS HLX22 and HLX87 clinical study completes first patient dosing"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/277355402.md"
description: "HENLIUS announced that the clinical study of HLX22 in combination with HLX87 has completed the first patient dosing in China, targeting HER2-positive recurrent or metastatic breast cancer patients. HLX22 is a novel targeted HER2 monoclonal antibody, with potential indications including gastric cancer and breast cancer"
datetime: "2026-03-01T12:40:38.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/277355402.md)
  - [en](https://longbridge.com/en/news/277355402.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/277355402.md)
---

# HENLIUS HLX22 and HLX87 clinical study completes first patient dosing

HENLIUS (02696.HK) announced that the first patient has been dosed in the Phase 2/3 clinical study of HLX22 (recombinant humanized anti-HER2 monoclonal antibody injection) in combination with HLX87 (targeted HER2 antibody-drug conjugate) as a first-line treatment for patients with HER2-positive recurrent or metastatic breast cancer in China.

HLX22 is a novel targeted HER2 monoclonal antibody licensed in by the company and subsequently developed independently, with potential indications including solid tumors such as gastric cancer and breast cancer

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