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Theolytics

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Oncolytic adenovirus therapies for intravenous cancer treatment

Oxford, United KingdomFounded 2017Biotech & Life Sciences
Valuation $100–250M Last recorded · 2024
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Theolytics and the history behind them.

About Theolytics

Theolytics is a clinical-stage biotechnology company that spun out of the University of Oxford in 2017. The company was co-founded by Charlotte Casebourne Stock and Margaret Duffy. Duffy, the Chief Scientific Officer, brought over a decade of international research experience in virology, including a PhD in Adenoviral Gene Therapy from the University of Glasgow. Casebourne, who served as CEO until mid-2024, had a background in translating life science technologies into commercial products and met the scientific founders in 2017, leading to the company's formation. Under her leadership, the company raised over $40 million and advanced to the clinical stage within seven years.

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The firm's core business is the development of oncolytic viral therapies, which are viruses engineered to selectively target and destroy cancer cells while sparing healthy tissue. Theolytics employs a phenotypic screening platform to discover and develop targeted candidates suitable for intravenous delivery. This approach involves using real tumor samples from patients to test and select the most effective viruses from a library of over 100 million variants, aiming for a more translationally relevant therapy compared to traditional lab models. This process is designed to create best-in-class products by using natural selection to identify viruses that thrive in patient-derived tumor cells, which are then enhanced through gene editing techniques like CRISPR.

Theolytics' business model is centered on advancing its pipeline of therapeutic candidates through clinical trials, with the ultimate goal of commercializing these novel cancer treatments. The company has secured significant funding from a syndicate of international life sciences investors, including M Ventures, Taiho Ventures, Epidarex Capital, Oxford Science Enterprises, and Sound Bioventures. Its lead product candidate, THEO-260, is a next-generation oncolytic adenovirus being developed for ovarian cancer. A key feature of THEO-260 is its ability to target not only cancer cells but also cancer-associated fibroblasts (CAFs), which are stromal cells that protect the tumor and contribute to treatment resistance. By destroying these fibroblasts, the therapy aims to break down the tumor's defenses. Theolytics has initiated a Phase I/IIa clinical trial for THEO-260 in patients with platinum-resistant ovarian cancer.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2017
Headquarters
Oxford, United Kingdom
Employees
31
Open positions
None listed
Dealroom signal
89.6/100
Industry
Health
Sub-industry
BioTechnology
Sector
Biotech & Life Sciences, Biotechnology, Oncology, Spinout, Biotech and Pharma, Woman Founder, Horizon Europe, DT and LS, uk is8 life sciences, UKSU, UKSU2010
Business model
Manufacturing
Client focus
b2b

Funding history

9 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Sep 2024 $2.6M — Undisclosed ↗
GRANTOther financing Aug 2024 $2.6M — UK Research and Innovation —
Showing the latest 2 of 9 recorded eventsBook a demo for the full funding history →

Growth signals

Theolytics website traffic

Latest recorded traffic for Theolytics is 2K monthly website visits, down 9.1% over the last three months. Theolytics's team declined 3.1% over the past year.

Latest monthly visits2K 3-month web change-9.1% 1-year team growth-3.1%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

9 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

  • Oxford Science Enterprises
  • UK Research and Innovation

Series A6 investors entered at this stage

  • Epidarex Capital
  • Taiho Ventures
  • Taiho Pharma
  • University of Oxford
  • M Ventures
  • Sound Bioventures

Other known investors1 additional known investor

  • Oxford University Innovation
Team profiled 8 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
5 countries with
team presence
🇬🇧 United Kingdom83.3%
🇮🇱 Israel4.2%
🇺🇸 United States4.2%
🇳🇱 Netherlands4.2%
🇩🇰 Denmark4.2%
5 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Theolytics on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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