Company lists · Data refreshed September 2026

Top 25 Gene therapy consultants based in the United States

RevenueBase identified 216 gene therapy consultants headquartered in the United States as of September 2026 and tracks 4,576 professional contacts across them, including 1,825 with verified work emails. Boston is the largest hub.

This list covers gene therapy consultants headquartered in the United States, 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.

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 19, 2026 86% judged on-target in blind review
216Companies
4,576Contacts tracked
1,825Verified emails
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The 25 largest gene therapy consultants based in the United States

Ranked by team size
Top 25 of 216 gene therapy consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to gene therapy consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceColumbus, OH, United StatesHQ checked Sep 19, 2026201-500456 contacts →

Strong evidence

“Forge, a member of Ajinomoto Bio-Pharma Services, is a gene therapy development engine, focused on enabling access to life changing gene therapies and helping bring them from idea…”

Source: RevenueBase Database · checked Sep 19, 2026
2Strong evidenceColumbus, OH, United StatesHQ checked Sep 19, 2026201-500281 contacts →

Strong evidence

“Andelyn Biosciences is a gene therapy CDMO dedicated to Turning Hope Into Reality™.”

Source: RevenueBase Database · checked Sep 19, 2026
3Strong evidenceLexington, MA, United StatesHQ checked Sep 19, 2026201-500243 contacts →

Strong evidence

“Founded in 2014 in Indianapolis, IN, Genezen is a best-in-class gene therapy CDMO with over a decade of experience supporting the cell and gene therapy manufacturing market…”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-500179 contacts →

Partial evidence

“The Dedham Group is the premier US oncology & specialty therapeutics strategy consulting firm that combines deep clinical expertise in specialty disease areas, commercial & market…”

Source: RevenueBase Database · checked Sep 19, 2026
5Strong evidenceBoston, MA, United StatesHQ checked Sep 19, 202651-200160 contacts →

Strong evidence

“Solid Biosciences is a precision genetic medicine company focused on advancing a portfolio of gene therapy candidates targeting rare neuromuscular and cardiac diseases, including…”

Source: RevenueBase Database · checked Sep 19, 2026
6Strong evidenceRockville, MD, United StatesHQ checked Sep 19, 202651-200115 contacts →

Strong evidence

“Ascend is gene to GMP partner with deep expertise in advanced therapy development and commercialization.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceNewbury Park, CA, United StatesHQ checked Sep 19, 202651-200109 contacts →

Indirect evidence

“Capsida Biotherapeutics Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceWatertown, MA, United StatesHQ checked Sep 19, 202651-20083 contacts →

Indirect evidence

“Landmark Bio is now Artis BioSolutions.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceWest Jefferson, OH, United StatesHQ checked Sep 19, 2026201-50082 contacts →

Partial evidence

“AmplifyBio combines the strength, knowledge and experience of our partners, and the expertise of our cross-integrated teams to advance translational science, cell and gene…”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceCollege Station, TX, United StatesHQ checked Sep 19, 202651-20080 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
11Strong evidenceAlexandria, VA, United StatesHQ checked Sep 19, 202651-20076 contacts →

Strong evidence

“ABOUT Biologics Consulting is a complete FDA regulatory and product development consulting firm for cell & gene therapy, biologics, pharmaceuticals, and medical devices.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 19, 2026501-1,00076 contacts →

Partial evidence

“At Spark® Therapeutics, we believe in a world where no life is limited by disease.”

Source: RevenueBase Database · checked Sep 19, 2026
13Strong evidenceMemphis, TN, United StatesHQ checked Sep 19, 2026201-50075 contacts →

Strong evidence

“Cognate BioServices is a leading contract development and manufacturing organization specialized in cell and cell-mediated gene therapies.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceBoston, MA, United StatesHQ checked Sep 19, 202611-5066 contacts →

Partial evidence

“Kelonia is pioneering a new wave of genetic medicines using its next generation gene delivery platform.”

Source: RevenueBase Database · checked Sep 19, 2026
15Strong evidenceWalnut Creek, CA, United StatesHQ checked Sep 19, 202651-20062 contacts →

Strong evidence

“AT DARK HORSE CONSULTING, we work to accelerate cell and gene therapies through our unmatched expertise.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceElkridge, MD, United StatesHQ checked Sep 19, 202651-20062 contacts →

Indirect evidence

“Latham BioPharm Group (LBG), part of Sia Partners, is a leading life sciences consulting company that works with pharmaceutical, biotech, CROs, academia, and medical…”

Source: RevenueBase Database · checked Sep 19, 2026
17Strong evidenceWaltham, MA, United StatesHQ checked Sep 19, 202651-20062 contacts →

Strong evidence

“We are a team with decades of proven success in translating science from bench to bedside across many companies and medicines, in gene therapy and beyond.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceHouston, TX, United StatesHQ checked Sep 19, 2026201-50059 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
19Partial evidenceCreve Coeur, MO, United StatesHQ checked Sep 19, 202651-20055 contacts →

Partial evidence

“Orchestra Life Sciences is a technical consultancy.”

Source: RevenueBase Database · checked Sep 19, 2026
20Strong evidenceActon, NH, United StatesHQ checked Sep 19, 202651-20044 contacts →

Strong evidence

“We are a network of expert engineering consultants providing cutting-edge solutions to pharmaceutical, biotech, cell, and gene therapy companies since 2011.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceCambridge, MA, United StatesHQ checked Sep 19, 2026201-50043 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceMonrovia, CA, United StatesHQ checked Sep 19, 2026n/a35 contacts →

Indirect evidence

“Rampart Bioscience is evolving a new class of medicines for patients with genetically driven diseases.”

Source: RevenueBase Database · checked Sep 19, 2026
23Partial evidenceRockville, MD, United StatesHQ checked Sep 19, 202611-5033 contacts →

Partial evidence

“American Gene Technologies® International Inc.(AGT™) is a private biotechnology company pursuing cures and treatments for infectious diseases, cancers, and monogenic disorders.”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceHamden, CT, United StatesHQ checked Sep 19, 2026n/a32 contacts →

Indirect evidence

“Our mission at Pars Pharmaceuticals Consulting (PPC) is to provide efficient and cost effective product development and regulatory support to biotech and pharmaceutical companies.”

Source: RevenueBase Database · checked Sep 19, 2026
25Strong evidenceChesterfield, MO, United StatesHQ checked Sep 19, 202611-5029 contacts →

Strong evidence

Gene Therapy.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 216 gene therapy consultants based in the United States

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Gene therapy consultants based in the United States at a glance

As of Sep 19, 2026
39.9%Verified-email coverage
21.2Average contacts per company
1-10Median size (employees)
7.4%Largest-city concentration · Boston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
154
11-50
26
51-200
18
201-500
13
501-1,000
2
1,001-5,000
1
10001+
2

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 216 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 gene therapy consultants, 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 the United States whose own description of what they do matches “gene therapy consultants”. 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 gene therapy consultants), 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 gene therapy consultants, and records with no verified work email. Companies headquartered outside United States 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, 1,825 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.

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 gene therapy consultants, 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 gene therapy consultants are there based in the United States?

RevenueBase identified 216 gene therapy consultants headquartered in the United States 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?

Forge Biologics, headquartered in Columbus, tops this list with the largest team on record.

Which city has the most gene therapy consultants?

Boston leads with 16 headquartered companies, followed by Cambridge (9) and San Diego (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 1,825 verified decision-maker contacts tracked across these 216 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.