臨床研究等提出・公開システム

Date of registration	May. 19, 2026
Last modified on	May. 19, 2026
Trial ID	jRCT1041260031

Scientific Title	Survey of olfactory disorders using the Japanese national database
Public Title	Survey of olfactory disorders using the Japanese national database

Contact for Scientific Queries	Name	Konda Akihito
	Affiliation	TSUMURA & CO.
	Address	2-17-11, Akasaka, Minato-ku, Tokyo
	Telephone	+81-3-6361-7200
	E-mail	tsu_jp_rd_ds01@mail.tsumura.co.jp
Contact for Public Queries	Name	Mizushima Kaori
	Affiliation	TSUMURA & CO.
	Address	2-17-11, Akasaka, Minato-ku, Tokyo
	Telephone	+81-3-6361-7200
	E-mail	tsu_jp_rd_ds01@mail.tsumura.co.jp

Recruitment status	Not Recruiting

Anticipated date of first enrollment		May. 19, 2026
Target sample size		500000
Study Type		Observational
Study Design	allocation	non-randomized controlled trial
	masking	open(masking not used)
	control	uncontrolled control
	assignment	single assignment
	purpose	other
Key inclusion & exclusion criteria	Inclusion Criteria	Patients suffering from olfactory disorders between April 2009 and June 2025
	Exclusion Criteria	No setting
	Age Minimum	No limit
	Age Maximum	No limit
	Gender	Both
Health Condition(s) or Problem(s) Studied		Olfactory disorders
Primary Outcome(s)		Prescription rates by type of drug therapy and their changes over time, incidence of comorbid symptoms, implementation status of olfactory function tests, and distribution of olfactory testing by region and medical institution

Primary Sponsor	TSUMURA & CO.

Source of Monetary Support / Secondary Sponsor	TSUMURA & CO.

Name of Certified Review Board	Research Ethics Committee of Kanazawa Medical University
Address	1-1 Daigaku, Uchinada-machi, Kahoku, Ishikawa, Ishikawa
Telephone	+81-76-218-8346
E-Mail	crtc@kanazawa-med.ac.jp
Approval Status	Approval
Date of approval	Oct. 21, 2025

Plan to share IPD	No

Countries of Recruitment（Except Japan）	none