Best Plasmid DNA CDMOs by Signal Score

← All Plasmid DNA CDMOs Best Clean FDA History Commercial Scale

CDMOs tracked

Fully scored

With FDA records

FDA inspections

EMA/MHRA GMP certs

Plasmid DNA is the upstream starting material for viral vectors, mRNA, and DNA therapeutics — which makes plasmid supply a frequent bottleneck for the entire advanced-therapy pipeline. Plasmid CDMOs run microbial (E. coli) fermentation, alkaline lysis, and chromatographic purification to GMP grade.

Selecting a plasmid CDMO turns on GMP vs research grade, supercoiled fraction and purity, fermentation scale, and lead time. The rankings below score each CDMO on FDA inspections, GMP certification, clinical activity, and capacity.

FDA inspection outcomes across these CDMOs: 10 NAI (no action), 7 VAI (voluntary action), 0 OAI (official action). Leading inspection & GMP sites: Germany (22), United States (17), UNITED KINGDOM (13), Belgium (4), France (4).

Last updated 2026-06-18. Sourced from FDA, EMA EudraGMDP, MHRA GMDP, and ClinicalTrials.gov.

#	CDMO	Signal Score	Quality	FDA · GMP	Capacity	Programs
1	CR Charles River Laboratories Newbury Park, CA · Memphis, TN · Keele, UK · Rockville, MD	91.7	98.7	7 insp · 11 GMP	Limited	0 programs
2	RP ReciBioPharm Keele, UK · Sodertalje, SE	88.0	100.0	0 insp · 3 GMP	—	0 programs
3	PB Pharmaron Biologics San Diego, CA · Shaoxing, CN	85.6	100.0	3 insp · 0 GMP	—	0 programs
4	AE Aldevron Fargo, ND	85.3	100.0	1 insp · 0 GMP	—	0 programs
5	KB KBI Biopharma Durham, NC · Boulder, CO	83.5	100.0	1 insp · 1 GMP	Limited	0 programs
6	TF Thermo Fisher Scientific Plainville, MA · Alachua, FL · Cambridge, MA	83.1	97.9	5 insp · 10 GMP	Available	2 programs
7	RB Richter BioLogics Hamburg, Germany	82.9	100.0	0 insp · 9 GMP	—	0 programs
8	WK Wacker Biotech Jena, DE · Amsterdam, NL · San Diego, CA	81.6	100.0	0 insp · 13 GMP	—	0 programs
9	KE Kaneka Eurogentec Seraing, BE	80.3	100.0	0 insp · 4 GMP	—	0 programs
10	AA Ascend Advanced Therapies Philadelphia, PA	78.1	100.0	0 insp · 1 GMP	—	0 programs

How we score CDMOs →

What to evaluate in a Plasmid DNA CDMO

GMP grade & purity

Confirm GMP (vs research/HQ) grade, supercoiled percentage, and residual host-cell DNA/RNA and endotoxin specs — these gate downstream vector and mRNA quality.

Fermentation scale & yield

Match fermentation scale and yield to your vector or mRNA demand. Ask about high-yield strains and whether scale-up is validated.

Lead time

Plasmid is a common critical-path bottleneck. Evaluate realistic queue and turnaround against your program timeline.

Regulatory track record

Cross-check FDA 483 history and EMA/MHRA GMP coverage — both shown above and on each profile.

Plasmid DNA CDMOs — Frequently Asked Questions

Who are the top Plasmid DNA CDMOs?

By CDMO Signal's independent Signal Score, the top-ranked Plasmid DNA CDMOs include Charles River Laboratories, ReciBioPharm, Pharmaron Biologics. See the full ranked table above — scored on FDA, clinical, financial, and capacity data.

How many Plasmid DNA CDMOs have FDA inspection records?

CDMO Signal tracks 5 Plasmid DNA CDMOs with FDA inspection records and 52 EMA/MHRA GMP certificates across the group.

What should I look for in a plasmid DNA CDMO?

Confirm GMP grade and purity specs (supercoiled %, residual host DNA, endotoxin), fermentation scale and yield for your demand, realistic lead time, and a clean FDA and EMA/MHRA record.

Why is plasmid DNA supply often a bottleneck?

Plasmid is the starting material for viral vectors and mRNA, so a single GMP plasmid lot gates multiple downstream steps. Constrained GMP fermentation capacity and long queues make it a frequent critical-path item.

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