Company lists · Data refreshed September 2026

Top 25 Immunooncology companies based in France

Name: Immunooncology companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 129 companies tracked

RevenueBase identified 129 immunooncology companies headquartered in France as of September 2026 and tracks 85,661 professional contacts across them, including 36,704 with verified work emails. Paris is the largest hub.

This list covers immunooncology companies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

129Companies

85,661Contacts tracked

36,704Verified emails

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The 25 largest immunooncology companies based in France

Ranked by team size

Top 25 of 129 immunooncology companies based in France, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to immunooncology companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sanofi	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	10001+	83,412 contacts →
	Indirect evidence “We are an R&D driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth.” Source: RevenueBase Database · checked Sep 20, 2026
2	Transgene	Indirect evidence	Illkirch-graffenstaden, FranceHQ checked Sep 20, 2026	51-200	207 contacts →
	Indirect evidence “Cancer immunotherapy Transgene (Euronext: TNG) is a clinical-stage biotechnology company focused on individualized therapeutic vaccines” Source: RevenueBase Database · checked Sep 20, 2026
3	Innate Pharma	Indirect evidence	Marseille, FranceHQ checked Sep 20, 2026	201-500	194 contacts →
	Indirect evidence “Innate Pharma S.A.” Source: RevenueBase Database · checked Sep 20, 2026
4	OSE Immunotherapeutics	Indirect evidence	Nantes, FranceHQ checked Sep 20, 2026	51-200	92 contacts →
	Indirect evidence “OSE Immunotherapeutics, a biotech dedicated to developing first-in-class assets in immuno-oncology (IO) & immuno-inflammation (I&I).” Source: RevenueBase Database · checked Sep 20, 2026
5	Crci2na	Indirect evidence	Nantes, FranceHQ checked Sep 20, 2026	201-500	81 contacts →
	Indirect evidence “CRCI2NA Nantes - Angers Cancer and Immunology Research Center The CRCI²NA (Centre de Recherche en Cancérologie et Immunologie Intégrée Nantes Angers in french) was created in…” Source: RevenueBase Database · checked Sep 20, 2026
6	Domain Therapeutics	Indirect evidence	Illkirch-graffenstaden, FranceHQ checked Sep 20, 2026	51-200	76 contacts →
	Indirect evidence “Domain Therapeutics, a clinical-stage global biopharmaceutical company, focused on developing innovative immunotherapies targeting G Protein-Coupled Receptors (GPCRs), one of the…” Source: RevenueBase Database · checked Sep 20, 2026
7	Osivax	Indirect evidence	Lyon, FranceHQ checked Sep 20, 2026	11-50	67 contacts →
	Indirect evidence “Osivax is a clinical-stage biopharmaceutical company developing a portfolio of differentiated influenza vaccines generating superior T-cell responses in addition to strong and…” Source: RevenueBase Database · checked Sep 20, 2026
8	Enterome	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	46 contacts →
	Indirect evidence “Enterome is a clinical-stage biopharmaceutical company developing breakthrough immunomodulatory drugs for the treatment of cancer and immune diseases.” Source: RevenueBase Database · checked Sep 20, 2026
9	Egle Therapeutics	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	42 contacts →
	Indirect evidence “Egle Therapeutics has been founded with a vision to become a game changer in the field of immunomodulating T-regulatory cells (Tregs) through the unique concept of Tregs’ starving…” Source: RevenueBase Database · checked Sep 20, 2026
10	Firalis S.A	Indirect evidence	Huningue, FranceHQ checked Sep 20, 2026	11-50	38 contacts →
	Indirect evidence “Within Basel neighbourhood and at the very heart of Europe (the triple border of France, Germany and Switzerland), Firalis is a pioneering biotechnology company, active in…” Source: RevenueBase Database · checked Sep 20, 2026
11	Xentech	Indirect evidence	Evry, FranceHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “XenTech is Biotech/Contract Research Organization (CRO) dedicated to translational research in oncology which offers preclinical services to evaluate the anti-cancer potential of…” Source: RevenueBase Database · checked Sep 20, 2026
12	MABQI	Indirect evidence	Grabels, FranceHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Mabqi specializes in the discovery and development of human therapeutic antibodies.” Source: RevenueBase Database · checked Sep 20, 2026
13	Smart Immune	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “Smart Immune is a clinical-stage French biotechnology company developing ProTcell, a thymus-empowered T cell progenitor platform to fully and rapidly re-arm the immune system…” Source: RevenueBase Database · checked Sep 20, 2026
14	Xenothera	Indirect evidence	Nantes, FranceHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “XENOTHERA is a biotechnology company based 21 rue La Nouë Bras de Fer, Nantes, France.” Source: RevenueBase Database · checked Sep 20, 2026
15	Mnemo Therapeutics	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	22 contacts →
	Indirect evidence “Mnemo Therapeutics is a Paris-based biotechnology company driven to create powerful immunotherapies by improving the body’s ability to detect and eradicate cancer.” Source: RevenueBase Database · checked Sep 20, 2026
16	Brenus Pharma	Indirect evidence	Lyon, FranceHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Brenus Pharma is a pioneering clinical stage biotech aiming to prevent cancer recurrence, the main challenge for solid tumors - causing 10M deaths each year worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
17	Inotrem	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Inotrem is a biotechnology company specialized in immunotherapy for acute inflammatory syndromes, such as septic shock.” Source: RevenueBase Database · checked Sep 20, 2026
18	Invectys	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Invectys, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
19	Scienta	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Scienta is a deeptech company advancing translational research in immunology.” Source: RevenueBase Database · checked Sep 20, 2026
20	Neovacs	Indirect evidence	Suresnes, FranceHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Neovacs, a French Biotechnology company, develops therapeutic vaccines for the treatment of autoimmune, inflammatory diseases aand invests in innovative companies (Biotech and…” Source: RevenueBase Database · checked Sep 20, 2026
21	Apmonia Therapeutics	Indirect evidence	Reims, FranceHQ checked Sep 20, 2026	1-10	17 contacts →
	Indirect evidence “Apmonia Therapeutics is a clinical-stage biotechnology company developing innovative peptide therapeutics designed to target the tumor microenvironment and improve outcomes for…” Source: RevenueBase Database · checked Sep 20, 2026
22	Theravectys	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “Based in Paris and in the USA, TheraVectys is an immunotherapy company spun off from the Institut Pasteur created in 2005 by Dr.” Source: RevenueBase Database · checked Sep 20, 2026
23	Hemerion Therapeutics	Indirect evidence	Lille, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “Hemerion is a clinical stage HealthTech company.” Source: RevenueBase Database · checked Sep 20, 2026
24	Biomunex Pharmaceuticals	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “BIOMUNEX Pharmaceuticals is a biopharmaceutical company focused on the discovery and development of breakthrough immunotherapies using its Unique BiXAb® technology to create next…” Source: RevenueBase Database · checked Sep 20, 2026
25	Oncodesign Precision Medicine - OPM	Indirect evidence	Dijon, FranceHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “OPM is a technological company specialized in precision medicine.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: immunooncology companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names immunooncology companies.
Partial evidence: Its own public description names part of immunooncology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name immunooncology companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 129 immunooncology companies based in France

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Immunooncology companies based in France at a glance

As of Sep 20, 2026

42.8%Verified-email coverage

664.0Average contacts per company

1-10Median size (employees)

27.1%Largest-city concentration · Paris

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 129 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among immunooncology companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “immunooncology companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names immunooncology companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among immunooncology companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 36,704 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Immunooncology companies by metro

Immunooncology companies in Paris35

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names immunooncology companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many immunooncology companies are there based in France?

RevenueBase identified 129 immunooncology companies headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sanofi, headquartered in Paris, tops this list with the largest team on record.

Which city has the most immunooncology companies?

Paris leads with 35 headquartered companies, followed by Lyon (12) and Nantes (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 36,704 verified decision-maker contacts tracked across these 129 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.