Company lists · Data refreshed September 2026

Top 9 Oncology clinical trial sites based in Japan

RevenueBase identified 47 company matches for oncology clinical trial sites associated with Japan as of September 2026 and tracks 949 professional contacts across them, including 165 with verified work emails. Tokyo is the largest hub.

This list covers company matches for oncology clinical trial sites associated with Japan, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built
47Companies
949Contacts tracked
165Verified emails
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The 9 largest oncology clinical trial sites based in Japan

Ranked by team size
Top 9 of 47 company matches for oncology clinical trial sites based in Japan, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOsaka, JapanHQ recorded Sep 17, 2026501-1,000287 contacts →

Exact match

“Linical is a global Contract Research Organization (CRO) for full-service drug development, with a proven record of helping biopharmaceutical companies successfully navigate the…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2Exact matchMinato-ku, JapanHQ recorded Sep 17, 202651-200129 contacts →

Exact match

“Micron Inc, the leading Japanese imaging CRO, was established in 2005 with expertise in the field of molecular imaging.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact match台東区, JapanHQ recorded Sep 17, 2026201-50026 contacts →

Exact match

“English follows Japanese 20058 CRO iQCRO Becoming Asia's Best CRO Since being founded in 2005, we have always pursued the commitment that values hard work, fosters personal…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchShibuya-ku, JapanHQ recorded Sep 17, 202651-20020 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5Exact match豊島区南池袋, JapanHQ recorded Sep 17, 2026201-50013 contacts →

Exact match

“Well designed architecture is not only visually beautiful, but also has to be structurally safe and functional.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchShibuya-ku, JapanHQ recorded Sep 17, 20261-1012 contacts →

Exact match

“CJ PARTNERS, Inc.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7Exact matchMinato-ku, JapanHQ recorded Sep 17, 202611-5010 contacts →

Exact match

“2016crocro2022 smo cra”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8Exact matchChuo-ku, JapanHQ recorded Sep 17, 202611-504 contacts →

Exact match

“DCTDecentralized Clinical Trialsolution service including Home nursing, TelemedicineePRO, etc.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact match京都市, JapanHQ recorded Sep 17, 202611-503 contacts →

Exact match

“It phr cro”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 9 of 47 oncology clinical trial sites based in Japan

See the full list, filter by size, metro and specialty, and access 165 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oncology clinical trial sites based in Japan at a glance

As of Sep 17, 2026
17.4%Verified-email coverage
20.2Average contacts per company
51-200Median size (employees)
29.8%Largest-city concentration · Tokyo
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
9
11-50
13
51-200
8
201-500
6
501-1,000
5
1,001-5,000
4
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 47 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Japan whose business descriptions match “oncology clinical trial sites” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 165 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “oncology clinical trial sites”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oncology clinical trial sites are there based in Japan?

RevenueBase identified 47 company matches for oncology clinical trial sites associated with Japan as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Linical tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oncology clinical trial sites?

Tokyo leads with 14 company records, followed by Jing (10) and Dao (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 165 professional contacts with verified work emails tracked across these 47 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.