---
title: "Oncoinvent publishes investor presentation on Radspherin alpha therapy for peritoneal metastases"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/296323325.md"
description: "Oncoinvent published an investor presentation detailing early clinical signals for Radspherin, a single-dose intraperitoneal alpha therapy. Phase 1 data for ovarian cancer showed a 30% overall recurrence rate at 24 months, while colorectal cohorts demonstrated improved outcomes versus benchmarks. Safety updates indicated no dose-limiting toxicity across 68 patients. The company targets regulatory submission in 2030, with ovarian cancer as the lead indication."
datetime: "2026-08-19T08:26:24.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/296323325.md)
  - [en](https://longbridge.com/en/news/296323325.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/296323325.md)
---

# Oncoinvent publishes investor presentation on Radspherin alpha therapy for peritoneal metastases

-   Oncoinvent highlighted early clinical signals for Radspherin, a single-dose intraperitoneal alpha therapy using radium-224 on CaCO3 microparticles. \* Phase 1 ovarian cohort at 7 MBq showed 10% peritoneal recurrence at 24 months; overall recurrence rate 30%. \* Phase 1/2a colorectal cohort at 7 MBq showed 28% peritoneal recurrence at 18 months versus about 50% in a literature benchmark. \* Safety update showed no dose-limiting toxicity across 68 patients; three serious adverse events were deemed possibly related. \* Development plan targets a submission in 2030; ovarian cancer positioned as lead indication with additional peritoneal-metastasis opportunities. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Oncoinvent ASA published the original content used to generate this news brief on August 19, 2026, and is solely responsible for the information contained therein. © Copyright 2026 - Public Technologies (PUBT) Original Document: here

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