
We’re Japanese Linguistic Validation
Specialists
Projects Since 2010
Y’s Translation, LLC provides cognitive debriefing, participant recruitment, clinician review coordination, and linguistic validation support for clinical research projects in Japan.
We have supported linguistic validations including cognitive debriefing since 2010. Each year, we recruit and coordinate approximately 100 to 200 participants and prepare approximately 30 to 50 cognitive debriefing and clinician review reports.
Our aim is to ensure that Japanese translations are accurate, natural, culturally appropriate, and clearly understood by the intended population.
Why Choose Y’s Translation?

- Supporting linguistic validation projects in Japan since 2010
- Approximately 100–200 participants recruited and coordinated annually
- Approximately 30–50 cognitive debriefing and clinician review reports prepared annually
- A participant-centered approach based on clear explanation and careful coordination

Therapeutic Experience
Representative therapeutic areas include:
- Gastroenterology (Crohn's disease, ulcerative colitis)
- Neurology (Parkinson's disease, multiple sclerosis, Alzheimer's disease)
- Rheumatology (Rheumatoid arthritis, Sjögren's syndrome, systemic lupus erythematosus)
- Oncology and hematology
- Respiratory diseases
- Endocrine and metabolic diseases
Additional therapeutic areas may be supported depending on project requirements.
Our Philosophy
Helping Patients’ Voices Be Heard Accurately
We believe that linguistic validation is more than translation.
By combining linguistic expertise, participant coordination, clinician networks, and clear communication, we help international project teams develop Japanese materials that are both accurate and meaningful.
Contact Us
Please contact Y’s Translation, LLC to discuss cognitive debriefing, participant recruitment, clinician review, or linguistic validation support in Japan.
Y’s Translation, LLC
Helping Patients’ Voices Be Heard Accurately.
