Single arm preliminary trial of Cognitive Processing Therapy for adolescents with Post-traumatic Stress Symptoms: Cpt for Adolescents and Young Adult with Post-traumatic stress symptoms (CAYAP)

Single arm preliminary trial of Cognitive Processing Therapy for adolescents with Post-traumatic Stress Symptoms: Cpt for Adolescents and Young Adult with Post-traumatic stress symptoms (CAYAP) - Research on Cognitive Processing Therapy for adolescents with Post -traumatic stress symptoms

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000039341

Enrollment

Registered

2020-02-01

Start date

2020-01-01

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

Post-traumatic Stress Symptoms Post-traumatic Stress Disorder

Interventions

Cognitive Processing Therapy for Adolescents and Young Adults with Post-traumatic stress symptoms (CAYAP)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Those aged 13 years or older, and 25 years or younger. 2) Patients who have been referred to NCNP Hospital or Aichi Psychiatric Medical Center by other institutions where they are either hospitalized or in ambulatory care. 3) The clinical presentation meets the B, C, D, E, F, H criteria of DSM-5 diagnosis of Post-traumatic Stress Disorder assessed by a Clinician-Administered PTSD Scale (CAPS-5). The Criteria A is not a prerequisite.

Exclusion criteria

Exclusion criteria: 1) No severe substance use disorders at baseline as assessed by the Mini-International Neuropsychiatric Interview (MINI). 2) No current manic episode or current psychotic disorders at baseline assessed by MINI. 3) No serious suicidal ideation at baseline assessed by MINI. 4) No severe or unstable physical disorders or major cognitive deficits at baseline. 5) No structured psychotherapy at baseline. 6) Other relevant reasons determined by investigators.

Design outcomes

Primary

Measure	Time frame
Post-traumatic stress symptoms assessed by a Clinician Administered PTSD Scale for DSM-5.	—

Secondary

Measure	Time frame
1. Post-traumatic stress symptoms assessed by PTSD Check List for DSM-5 2. Patient Health Questionnaire-9; PHQ-9 3. General Anxiety Disorder-7; GAD-7 4. Euro Quality of Life 5-dimensional 5-level; EQ-5D-5L 5. Sheehan Disability Scale; SDS 6. Dissociation symptoms (Items added to CAPS-5 and PCL-5) 7. Suicidal Ideation Attributes Scale; SIDAS	—

Countries

Japan

Contacts

Public ContactAkiko Katayanagi

National Center of Neurology and Psychiatry National Center for Cognitive- Behavior Therapy

akatayanagi-ncnp@umin.ac.jp+82-42-341-2711

Outcome results

None listed

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