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Xilis

Biotech & Life Sciences · Durham, United States · Founded 2019

Developing next generation technologies for precision medicine and drug discovery MoreLess

Xilis is a biotechnology startup that operates in the oncology and drug development market. The company's primary innovation is the MicroOrganoSphereTM (MOS) technology and Precision Oncology Platform. These technologies are designed to revolutionize treatment choices for cancer patients and expedite the process of drug discovery and development.

The MOS technology creates microscale tumors that maintain the structure, genetic alterations, gene expression, immune microenvironment, and histopathology of individual patients' tumors. This allows for rapid diagnostics and personalized therapy prioritization by predicting patient response. It also provides scalable patient-derived models for high-throughput and immuno-oncology drug discovery.

The Precision Oncology Platform aids clinicians in making timely treatment decisions by predicting patient treatment response and suggesting optimal therapeutic options. The Xilis Response ScoreTM, a part of this platform, can guide prioritized treatment decisions for oncologists and ensure patients receive the right drug at the right time.

Xilis' business model is centered around providing an end-to-end patient-centric solution that transforms cancer drug development. This includes cost-effective, high-throughput drug candidate screening, pre-clinical assessment of immuno-oncology drugs, personalized assays to determine patient eligibility for clinical trials, and companion diagnostics to guide patients to newly developed treatments.

The company's primary clients are oncologists and other healthcare professionals involved in cancer treatment, as well as pharmaceutical companies engaged in drug discovery and development.

Keywords: Xilis, MicroOrganoSphereTM (MOS) technology, Precision Oncology Platform, cancer treatment, drug discovery, drug development, personalized therapy, high-throughput screening, immuno-oncology, clinical trials.

Company overview

Xilis company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2019
Headquarters
Durham, United States
Employees
14
Open positions
None listed
Dealroom signal
61.8
sub industryPharmaceuticalsub industryBioTechnologybusiness modelManufacturingindustryHealthsectorBiotechnologysectorDrug DevelopmentsectorPrecision MedicinesectorSpinoutsectorTech for Biotech and PharmasectorBiotech and PharmasectorHard TechsectorDT and LSsectorscience-basedclient focusb2b

Valuation & funding

Xilis funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
LATE VCOther financing Apr 2025 $19M $76M Undisclosed
SERIES AOther financing Jul 2022 $19M $350M EQT Ventures · Duke Capital Partners · Alix Ventures · FPV Ventures
SERIES AOther financing Jul 2021 $70M $280M Felicis · EQT Life Sciences · Mubadala Capital
SEEDOther financing May 2020 Two Sigma Ventures
EARLY VCOther financing Dec 2019 $3M $12M Felicis
SPINOUTOther financing Jan 2019 Duke Capital Partners
Showing 6 recorded eventsUnlock the complete deal history →

Growth signals

Xilis website traffic

Latest recorded traffic for Xilis is 3.4K monthly website visits, up 794.7% over the last three months. Xilis's team declined 65.9% over the past year.

Latest monthly visits3.4K 3-month web change+794.7% 1-year team growth-65.9%
Monthly website visits70 observations · Jun 2020–Jul 2026
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Comparisons

Xilis compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Xilis's talent

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Team profiled 16 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 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.

Investors

11 investors on Xilis's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 1 investor entered at this stage
Series A 10 investors entered at this stage
Felicis
Mubadala Capital
EQT Life Sciences
FPV Ventures
EQT Ventures
Duke Capital Partners
Alix Ventures
Pear Ventures
Alexandria Venture Investments
Catalio Capital Management

Global footprint

Where Xilis has talent and traffic

Workforce by country
2 countries with
team presence
🇺🇸 United States85.7%
🇳🇱 Netherlands14.3%
2 countries shown

In the news

Latest news about Xilis

Recent press, funding announcements, and product moves mentioning Xilis — open to read from the original sources.

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Market sentiment

What the market is saying about Xilis

An AI-synthesized read of the highest-engagement posts about Xilis on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

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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