A study on the inter-individual variability of the nocebo effect

A study on the inter-individual variability of the nocebo effect - Individual change factors for nocebo reaction

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000048044

Enrollment

210

Registered

2022-06-13

Start date

2023-09-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy subjects

Interventions

fake drug administration(lactose), single dose

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy subjects

Exclusion criteria

Exclusion criteria: intreatment, subjects with allergy for drugs and foods

Design outcomes

Primary

Measure	Time frame
subjective indicator:Stanford sleepiness scale(SSS),Visual analogue scale objective indicator:serotonin transporter polymorphic, catechol-o-transferase transporter polymorphic	—

Secondary

Measure	Time frame
subjective indicator:Stanford sleepiness ssubjective indicator Personality examination objective indicator:blood flow of Brain prefrontal area	—

Countries

Japan

Contacts

Public ContactMinae Isawa

Faculty of pharmacy, Keio university Division of Hospital Pharmacy Science

isawa-mn@pha.keio.ac.jp03-5400-2486

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026