---
name: PSI
slug: appian
site: cro
website_domain: psi-cro.com
summary: PSI runs full-service Phase 2 and 3 clinical trials with a stated focus on on-time enrollment and over 90% repeat and referral business. Key therapeutic areas include oncology, GI, hematology, cell and gene therapy, neurology, and infectious diseases. Headquartered in Osaka, Japan.
tagline: The global CRO you can trust for on-time pivotal Phase 2 and 3 clinical trials
founded_year: 
employee_count_band: 
employee_count_label: 
parent_name: 
parent_slug: 
hq_country: JP
tier2_domain_verified: false
updated_at: 2026-10-30T00:02:13.845Z
services_count: 3
modalities_count: 3
indications_count: 9
locations_count: 1
review_signal_gate: closed
generated_by: BioBM Editorial AI
---

# PSI

The global CRO you can trust for on-time pivotal Phase 2 and 3 clinical trials

Listed on cro.directory.

## Summary

PSI runs full-service Phase 2 and 3 clinical trials with a stated focus on on-time enrollment and over 90% repeat and referral business. Key therapeutic areas include oncology, GI, hematology, cell and gene therapy, neurology, and infectious diseases. Headquartered in Osaka, Japan.

## At a glance

- HQ country: JP

## Services

- Phase II Clinical Trials
- Phase III Clinical Trials
- Clinical Operations

## Modalities

- Cell Therapy
- Gene Therapy
- Radiopharmaceutical

## Indications

- Oncology
- Gastroenterology
- Neurology
- Infectious Disease
- Respiratory
- Immunology
- Cardiovascular
- Nephrology
- Metabolic

## Locations

- Osaka, Osaka, Osaka, Japan

## Long description

## Overview

PSI describes itself as a full-service global contract research organization (CRO). The company positions its work around on-time delivery of pivotal Phase 2 and Phase 3 clinical trials.

## Therapeutic areas

- Oncology, including breast, lung, prostate, colorectal, and ovarian cancers
- Gastroenterology, including inflammatory bowel disease, Crohn's disease, and ulcerative colitis
- Hematology, including multiple myeloma, lymphomas, leukemias, and hemophilia
- Cell and gene therapy, including CAR-T, gene editing, stem cell therapy, and immunotherapy
- Neurology, including multiple sclerosis, stroke, Alzheimer's, and Parkinson's
- Infectious diseases, including UTI, pneumonia, skin infections, sepsis, and hepatitis
- Radiopharmaceuticals, across oncology and neurology
- Respiratory, including COPD, IPF, and asthma
- Other areas, including allergy, immunology, rheumatology, endocrine and metabolic diseases, cardiology, and nephrology and urology

## Delivery approach

The website states that PSI meets enrollment milestones and budgets, and that about 90% of clients are repeat or referral customers. It also describes a team of experts across 58 countries and a feasibility platform for clinical trial planning. A separate agentic AI platform is presented for study milestone management.

## Recognition and expansion

PSI says it is recognized by independent industry organizations and sponsor surveys. A newsroom headline references a new office in Osaka as part of continued Japan expansion.

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- [Caidya](/companies/caidya) (Phase II Clinical Trials, Phase III Clinical Trials) — [Compare](/compare/appian/caidya)
- [Worldwide Clinical Trials](/companies/worldwide) (Phase II Clinical Trials, Phase III Clinical Trials) — [Compare](/compare/appian/worldwide)

_Profile last updated: 2026-10-30T00:02:13.845Z. Profile facts may include AI-assisted enrichment._

Auto-generated by BioBM Editorial AI for machine-readable profile access.