Company lists · Data refreshed September 2026
Top 25 Childhood leukemia organizations worldwide
RevenueBase identified 943 childhood leukemia organizations worldwide as of September 2026 and tracks 21,177 professional contacts across them, including 7,044 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers childhood leukemia organizations worldwide, 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 19, 2026. Country and city lists for childhood leukemia organizations follow the table.
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.
The 25 largest childhood leukemia organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,424 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,596 contacts → | ||||
Partial evidence “The Leukemia & Lymphoma Society is now Blood Cancer United, and we believe everyone with blood cancer deserves a longer, better life.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,517 contacts → | ||||
Indirect evidence “Het Prinses Máxima Centrum voor kinderoncologie is een uniek initiatief van ouders van kinderen met kanker en professionals in de kinderoncologie in Nederland om alle…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 799 contacts → | ||||
Indirect evidence “O GRAACC é uma instituição sem fins lucrativos, criado para garantir a crianças e adolescentes com câncer o direito de alcançar todas as chances de cura com qualidade de vida…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 678 contacts → | ||||
Indirect evidence “Kesem is the leading national nonprofit supporting children facing a parent’s cancer.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 399 contacts → | ||||
Indirect evidence “At Children’s Cancer Institute, we believe that a life should be long.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 214 contacts → | ||||
Indirect evidence “MAHAK – the Society to Support Children Suffering from Cancer is a charity organization established in 1992 and continues since as an independent NGO exclusively funded by…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 210 contacts → | ||||
Indirect evidence “The Leukaemia Foundation is the only national charity dedicated to helping those with leukaemia, lymphoma, myeloma and related blood disorders survive and then live a better…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 192 contacts → | ||||
Indirect evidence “O Centro Infantil Boldrini (Campinas – SP), fundado em 1978, é um hospital especializado em oncologia e hematologia pediátrica.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 173 contacts → | ||||
Indirect evidence “We're a community dedicated to beating blood cancer- leukaemia, lymphoma, myeloma through research.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 169 contacts → | ||||
Indirect evidence “Dal 1969 AIL promuove e sostiene la ricerca scientifica per la cura delle leucemie, dei linfomi e del mieloma.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 145 contacts → | ||||
Indirect evidence “The St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 137 contacts → | ||||
Partial evidence “About CHOC: CHOC aims to save lives through early detection of childhood cancer and making the journey of those who are affected by childhood cancer, less burdensome through the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 132 contacts → | ||||
Indirect evidence “The Children’s Oncology Group (COG) a member of the National Cancer Institute (NCI) National Clinical Trials Network (NCTN), is the world’s largest organization devoted…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 128 contacts → | ||||
Indirect evidence “The Josep Carreras Leukaemia Research Institute was founded in 2010, by the Josep Carreras Foundation and the Government of Catalonia, as the first European research centre…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 125 contacts → | ||||
Indirect evidence “Leucan is an association that grew out of the link between parents of cancer-stricken children and healthcare professionals.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 120 contacts → | ||||
Indirect evidence “Holding it together when your child’s life is in question can feel impossible.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 115 contacts → | ||||
Partial evidence “The Swedish Childhood Cancer Foundation works to ensure that affected children, teens and their families receive the care and support they need.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 115 contacts → | ||||
Indirect evidence “Alex's Lemonade Stand Foundation (ALSF) emerged from the front yard lemonade stand of 4-year-old Alexandra “Alex” Scott, who was fighting cancer and wanted to raise money to find…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 111 contacts → | ||||
Partial evidence “Non-profit organization on a mission to find a cure for childhood cancer, and in the meantime, help families in crisis and spread the B+ message.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 106 contacts → | ||||
Indirect evidence “Kanserli Çocuklara Umut Vakfı, yılında çocukları tedavi görmekte olan aileler ile hekimlerinin bir araya gelmeleriyle kuruldu.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 100 contacts → | ||||
Indirect evidence “A Abrale (Associação Brasileira de Câncer do Sangue) é uma organização sem fins lucrativos, de abrangência nacional, criada em 2002 por pacientes e familiares com a missão de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 91 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 74 contacts → | ||||
Indirect evidence “Find your best blood cancer treatment options and clinical trials.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 74 contacts → | ||||
Indirect evidence “Criado em 1991, o Instituto do Câncer Infantil é uma organização sem fins lucrativos que atua para aumentar as chances de cura do câncer infantojuvenil.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: childhood leukemia organizations. 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 childhood leukemia organizations.
- Partial evidence
- Its own public description names part of childhood leukemia organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name childhood leukemia organizations. 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 943 childhood leukemia organizations worldwide
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Childhood leukemia organizations worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 childhood leukemia organizations, 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.
- Coverage
- Every country. Country and city lists for childhood leukemia organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “childhood leukemia organizations”. 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 childhood leukemia organizations), 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 childhood leukemia organizations, and records with no verified work email.
- 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, 7,044 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 19, 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.
Childhood leukemia organizations by location
8 lists · largest firstEvery Childhood leukemia organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Childhood leukemia organizations based in the United States394
- Childhood leukemia organizations based in the United Kingdom47
- Childhood leukemia organizations based in Germany34
- Childhood leukemia organizations based in Australia31
- Childhood leukemia organizations based in Spain31
- Childhood leukemia organizations based in Brazil29
- Childhood leukemia organizations based in Canada26
- Childhood leukemia organizations based in Italy25
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 childhood leukemia organizations, 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 childhood leukemia organizations are there worldwide?
RevenueBase identified 943 childhood leukemia organizations worldwide 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?
St. Jude Children's Research Hospital, headquartered in Memphis, tops this list with the largest team on record.
Which country has the most childhood leukemia organizations?
The United States leads with 394 companies, followed by the United Kingdom (47) and Germany (34). Every childhood leukemia organizations list by country and city is linked on this page.
Which city has the most childhood leukemia organizations?
New York leads with 14 headquartered companies, followed by London (12) and Paris (9).
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 7,044 verified decision-maker contacts tracked across these 943 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 19, 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.