Sources Policy

Our Principles

OncoClear is committed to providing reliable medical information based on the following principles.

• We prioritize primary sources published by public institutions and academic organizations
• We cite sources and references on each cancer information page
• We regularly verify accuracy and update content based on the latest findings

Primary Sources

Cancer information is primarily sourced from the following institutions and databases.

• National Cancer Center Japan — Cancer Information Service
• World Health Organization (WHO) / International Agency for Research on Cancer (IARC)
• National Cancer Institute (NCI)
• Clinical practice guidelines from the Japanese Society of Clinical Oncology and other academic societies
• PubMed / Peer-reviewed medical literature

Hospital Data Sources

Data on designated cancer hospitals and treatment records are sourced from the following.

• Ministry of Health, Labour and Welfare — Designated Cancer Hospital List / DPC Public Data
• National Cancer Center — Hospital-based Cancer Registry National Data

Clinical Trial Information

Clinical trial information is retrieved in real-time via the ClinicalTrials.gov API. The displayed information is provided by each trial's registrant and is not verified or guaranteed by OncoClear.

Disclaimer

The information on this site is intended to provide general knowledge about cancer and is not a substitute for medical advice, diagnosis, or treatment. For specific symptoms or treatment plans, please consult your physician or a qualified healthcare professional.

Information Updates

We periodically review published information. However, as medical research advances continuously, content may not always reflect the very latest findings. If you notice any errors or areas that need updating, please let us know.