---
service: svc_clinical_phase1
modality: mod_gene_therapy
region: us
site: cro
companies_count: 11
generated_by: BioBM Editorial AI
---

# Phase I Clinical Trials × Gene Therapy (United States)

Phase I Clinical Trials with Gene Therapy in United States is a frequent shortlist pattern for sponsors evaluating CRO partners with regional footprint. This page lists organizations that map to all three dimensions so you can move from broad taxonomy browsing to a geography-aware candidate set.

Profiles emphasize fit-first discovery: review scope, regulatory posture, and provenance on each listing rather than treating this page as a single ranked recommendation.

When you need additional filters (indications, claim status, or free-text search), continue to the main search experience and layer criteria on top of this starting point.

## Matching companies

- [Altasciences](/companies/altasciences)
- [CTI Clinical Trial and Consulting Services](/companies/ctifacts)
- [Celerion](/companies/celerion)
- [Certara](/companies/certara)
- [Fortrea](/companies/fortrea)
- [Medpace](/companies/medpace)
- [Pharmaron](/companies/pharmaron)
- [Premier Research](/companies/premier-research)
- [Syneos Health](/companies/syneoshealth)
- [Syngene International](/companies/syngeneintl)
- [Velocity Clinical Research](/companies/velocityclinical)