KOLs are experts that can influence the behavior of others, meaning KOLs can sway minds and markets.
What is a Key Opinion Leader (or KOL)?
A Key Opinion Leader (or KOL) is an expert or thought leader within the scientific community who has earned the trust of their peers for specific concepts .
Key Opinion Leaders are also called influencers, experts, or thought leaders , and in the post-pandemic world, the terms "DOLs" (digital opinion leaders) and Influencers (marketing) have also gained popularity.
What is KeyOpinionLeaders.com, and how can it help you?
KeyOpinionLeaders.com is a free search engine that lets you find Key Opinion Leaders . You can enter any concept on the search bar at the top of this page and use it to find the top Key Opinion Leaders instantly for that concept. You can filter your results by other concepts, organizations, and locations.
Imagine a search engine similar to that popular search engine you probably use to find websites, only that instead of searching through websites, it could search through people who are considered experts for specific concepts. That's what KeyOpinionLeaders.com does.
What are other synonyms for KOLs?
Depending on the context, other synonyms for Key Opinion Leader could be Influencer , KOLs (Marketing) , Digital Opinion Leader , DOLs , Thought leader , Knowledge leader , Key Opinion Influencer or KOi .
KOLs in healthcare
KOLs are particularly important in healthcare, to offer an example, in a KOLs study by Clinckemaillie et al. in 2011, 850 Healthcare providers (HCPs) outside of the United States were asked how they decide which brand of medication to prescribe. 40% out of the 850 participants said they based their decision on the prominence of specific pieces of research available about the drugs they prescribe. In other words, in the case of a doctor, the opinions of prominent peers/researchers ( KOLs ) are taken into account to recommend a treatment plan to a patient.
KOLs Identification: How to find KOLs
Using the KOLs website, you can compare the level of influence of any two KOLs for any concept . Use the search bar at the top of any page on this website, and then filter the KOLs by subconcepts (known-fow) and location (city or country).
To get a more personalized (but still free) KOLs list, please email , and in less than 2 hours, we will send you the list of the most influential KOLs that match your targeting criteria (location, concepts, subconcepts).
How many individuals are in KOLs database?
The Key Opinion Leaders' database, or KOLs database for short, has coverage for more than 50 million individuals in over 170 countries (please see the FAQs for more details).
Are KOLs mappings free?
Yes, access to KOLs mappings and the entire KOLs database is entirely free of charge . You can run unlimited queries and use as many filters (city, country, sub-concepts, organizations and more) as you need. There is no longer a need to pay hefty fees to providers of KOL mappings.
Where is KOLs located?
We currently operate two locations that serve customers all around the world:
Are there other organizations that provide alternatives to KOLs?
Yes, there are other companies/services that provide key opinion leaders' insights, some that we know of are (in no particular order):
Get a free KOL report:
KOLs Profiling: What are "Key Opinion Leader insights"?
KOLs can influence audiences on different topics or concepts; for example, a KOL in sports may not be influential in music. Even within the same discipline, for example, sports: A KOL in baseball may not be influential for soccer.
Generally speaking, you may want to understand which specific concepts a KOL has an influence on and quantify their level of influence (for that particular concept) before investing time and resources in nurturing the relationship with the KOL. This process is known as KOL profiling.
Key opinion leader insights are a set of concepts that would accurately describe and provide a deep understanding of a KOL.
In layman's terms, the insights for a thought leader would be a set of concepts that describe accurately what this key opinion leader knows about or has influence for.
The following is an example of key opinion leader insights for a prominent scientist (this is an actual example derived by the KOLs platform):
Key opinion leader jobs / KOLs jobs / KOLs careers
KOLs Frequently Asked Questions
What is a key opinion former?
Key opinion former is often used interchangeably with "key opinion leader" or "KOL". Please see the " What is a KOL ?" above.
Why are thought leaders and digital opinion leaders influential in Healthcare?
It is the case because doctors, patients, advocacy groups, and sometimes even regulatory agencies consider the leader opinion while making decisions.
Could there be conflicts of interest?
In our opinion key opinion leaders can hold leadership roles and manage conflicts of interest (COIs) with integrity.
What is the meaning of the numeric influence score of a Key Opinion Leader for a concept?
The Key Opinion Leader concept score, or KOL concept score for short, is a deterministic, quantifiable, and verifiable measure of a person's level of influence (for a specific concept) on the scientific/academic community. It is a measure of that person's level of contextual influence for that specific concept.
How are the KOL concept scores calculated?
The Key Opinion Leader concept scores (KOL concept scores) are calculated using our proprietary technology and artificial intelligence operating over a set of over 100 million publications.
How many individuals are in a KOLs database?
The Key Opinion Leaders' database has coverage for more than 50 million individuals in over 170 countries.
How many concepts are mapped to KOLs?
You can access sorted KOL mappings for over 3 trillion concepts (3,000,000,000,000+ concepts).
How can I get a copy of the KOLs database?
To get a copy of the KOLs database please contact us by clicking on the "Contact us" link at the bottom of any page in Key Opinion Leaders' website.
How can I find oncology key opinion leaders?
For illustration purposes, we have prepared a guide that showcases how to find key opinion leaders in oncology. Please see the guide " How to find Key Opinion Leaders in Oncology ."
This guide is just an illustrative example. You can use the Key Opinion Leaders website similarly to identify KOLs in any other area of knowledge. This service is completely free of charge and publicly accessible .
Last updated: September 16, 2022
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/ Key Opinion Leaders / -- A Pancoast Tumor is a tumor of the apex of the lung, named after radiologist Henry Pancoast. A Pancoast Tumor is defined primarily by its location at the very top of either lung. Also, most of these tumors are a form of non-small cell lung cancer. Pancoast Tumors are particularly difficult to diagnose and treat due to their location. The Pancoast Tumor often grows near and around blood vessels, nerves, lymph nodes, ribs, and the spine. When the tumor compresses and invades these areas, it creates health problems outside the usual symptoms of lung cancer. While Pancoast Tumors only...
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About Key Opinion Leaders (KOLs) As the largest KOLs database with a coverage for more than 50 million KOLs in over 170 countries, Key Opinion Leaders...
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