Individual change factors for placebo reaction:Study of placebome and personality trait

Individual change factors for placebo reaction:Study of placebome and personality trait - Individual change factors for placebo reaction

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000029915

Enrollment

200

Registered

2017-11-30

Start date

2018-01-20

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

placebo administration(lactose), single dose placebo 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.jp03-5400-2796

Outcome results

None listed

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