Best Oligonucleotide / ASO CDMOs in Switzerland
· updated as new inspection, certificate, and trial data enters the platform
3
CDMOs tracked
1
Fully scored
1
With FDA records
3
FDA inspections
Oligonucleotide CDMOs make antisense oligonucleotides (ASOs), siRNAs, and related nucleic-acid drugs by solid-phase synthesis, with downstream purification and conjugation (e.g. GalNAc). The segment has grown sharply alongside approved ASO and siRNA therapeutics.
Choosing an oligonucleotide CDMO turns on synthesis scale, chemistry breadth (phosphorothioate backbones, 2'-modifications, conjugation), purity, and a clean regulatory record. The rankings below score each CDMO on FDA inspections, GMP certification, clinical activity, and capacity.
FDA inspection outcomes across these CDMOs: 0 NAI (no action), 3 VAI (voluntary action), 0 OAI (official action). Leading inspection & GMP sites: United States (2), Switzerland (1).
Last updated 2026-07-28. Sourced from FDA, EMA EudraGMDP, MHRA GMDP, and ClinicalTrials.gov.
| # | CDMO | Signal Score | Quality | FDA · GMP | Capacity | Programs |
|---|---|---|---|---|---|---|
| 1 |
BA
Bachem
Bubendorf, CH
|
83.5 | 98.9 | 3 insp · 0 GMP | — | 0 programs |
| — |
Roche / Genentech (Internal Manufacturing & CustomBiotech)
Basel, Switzerland
|
Profiled | — | — | — | 0 programs |
| — |
Cerbios-Pharma
Lugano, Switzerland
|
Profiled | — | — | — | 0 programs |
What to evaluate in a Oligonucleotide / ASO CDMO
Synthesis scale
Match synthesizer scale (mmol to mol) to your clinical and commercial demand, and confirm the CDMO can scale without shifting the impurity profile.
Chemistry & conjugation
Confirm experience with your backbone and modifications (phosphorothioate, 2'-MOE/F) and any conjugation (GalNAc, lipid) your molecule requires.
Purity & analytics
Full-length product, deletion/addition impurities, and residual metals drive release. Look for established orthogonal analytics.
Regulatory track record
Cross-check FDA 483 history and EMA/MHRA GMP coverage — both shown above and on each profile.
Why are Swiss CDMOs positioned as premium-tier for biopharma manufacturing?
The Swiss CDMO cluster (Basel, Visp, Bern) hosts three attributes that reinforce a premium tier positioning: (1) regulatory alignment — Switzerland's Swissmedic runs a mutual-recognition GMP framework with the EU, so a Swiss facility supplying the EU doesn't need parallel EMA certification for the same activities; (2) technical depth — Swiss CDMOs have historically led on complex chemistry (Lonza on biologics + peptides, Bachem on peptides, CordenPharma on APIs) and on early-adopter viral vector manufacturing; (3) capital access — Swiss operations are able to make sustained capex investments in single-site scale-ups that lower-cost jurisdictions cannot match. That said, Swiss CDMOs also carry higher per-batch costs than Asian or Eastern European alternatives — the trade-off is process depth and regulatory posture, not price.
How does Switzerland's non-EU status affect drug supply to EU markets?
Switzerland is not an EU member state but maintains a bilateral Mutual Recognition Agreement (MRA) with the EU covering GMP inspections. Practically: a Swissmedic GMP inspection is recognized by EMA as equivalent to an EMA GMP inspection for the covered activity. Swiss-manufactured product does still require an EU-based Qualified Person for batch release into the EU market, but the facility itself does not need parallel EMA certification. This makes Swiss CDMOs operationally cleaner for pan-European supply than most non-EU alternatives. For UK supply, post-Brexit MHRA has continued to recognize the Swissmedic MRA under transitional arrangements — sponsors supplying both EU and UK should confirm current MHRA policy at RFP stage.
Which Swiss CDMOs are also present in the US and Asia?
The largest Swiss CDMOs — Lonza, CordenPharma, Bachem — operate global site networks spanning Switzerland, US, and (in Lonza's case) multiple Asian geographies. This multi-region posture materially reduces regulatory tech-transfer risk for programs supplying multiple markets from a single CDMO relationship. Cross-check with the US region ranking and Asia region ranking to identify Swiss-headquartered CDMOs with cross-jurisdictional footprint. Individual profile pages surface the specific site network.
Oligonucleotide / ASO CDMOs — Frequently Asked Questions
Who are the top Oligonucleotide / ASO CDMOs?
By CDMO Signal's independent Signal Score, the top-ranked Oligonucleotide / ASO CDMOs include Bachem. See the full ranked table above — scored on FDA, clinical, financial, and capacity data.
How many Oligonucleotide / ASO CDMOs have FDA inspection records?
CDMO Signal tracks 1 Oligonucleotide / ASO CDMO with FDA inspection records and 0 EMA/MHRA GMP certificates across the group.
What should I look for in an oligonucleotide CDMO?
Match synthesis scale to your demand, confirm experience with your backbone chemistry and any conjugation (e.g. GalNAc), prioritize strong purity analytics, and a clean FDA and EMA/MHRA record.
What therapeutics do oligonucleotide CDMOs make?
Antisense oligonucleotides (ASOs), siRNAs, aptamers, and related nucleic-acid drugs — increasingly with conjugation chemistries like GalNAc for targeted delivery.
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