NCT06170801

Brief Summary

The purpose of this study is to compare an individual state-of-the-art cognitive behavioral therapy (CBT) with CBT augmented by a group intervention for improving interpersonal skills, the Kiesler Circle Training (CBT+KCT), in patients with a depressive or anxiety disorder.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
156

participants targeted

Target at P75+ for not_applicable

Timeline
5mo left

Started Jul 2024

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress82%
Jul 2024Oct 2026

First Submitted

Initial submission to the registry

December 4, 2023

Completed
10 days until next milestone

First Posted

Study publicly available on registry

December 14, 2023

Completed
7 months until next milestone

Study Start

First participant enrolled

July 3, 2024

Completed
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2026

Last Updated

March 4, 2026

Status Verified

March 1, 2026

Enrollment Period

2 years

First QC Date

December 4, 2023

Last Update Submit

March 2, 2026

Conditions

Keywords

PsychotherapyDepressionAnxietyOutpatient TreatmentGroup TherapyChildhood MaltreatmentModeratorMediatorDaily Social ContactsElectronical Momentary AssessmentEfficacyFeasibility

Outcome Measures

Primary Outcomes (1)

  • Inventory for Interpersonal Problems (IIP-32; Horowitz et al., 1988, German: Thomas et al., 2011)

    Change in interpersonal functioning, measured with the IIP-32 from baseline (Time 1) to week 14 (Time 2), represents the primary outcome measure. The IIP-32 is a self-assessment questionnaire for interpersonal problems, i.e., difficulties in interacting with other individuals, based on Horowitz's Circumplex Model. It consists of 32 items that are answered on a 5-point scale (0= not at all, 4 = very much). For evaluation, a mean score is calculated across all items, with a higher score indicating a higher severity of interpersonal problems.

    Weeks 1, 14

Secondary Outcomes (14)

  • Inventory for Interpersonal Problems (IIP-32; Horowitz et al., 1988, German: Thomas et al., 2011)

    Baseline, Weeks 1, 9, 14, 26

  • Impact Message Inventory, revised version (IMI-R; Kiesler et al., 2006; German: Caspar et al., 2016)

    Weeks 1, 14, 26

  • Hamilton Depression Rating Scale, 24 items version (HAM-D, Hamilton, 1967)

    Weeks 1, 9, 14, 26

  • Beck Depression Inventory, simplified (BDI-V; Beck, 1961; German version: Schmitt et al., 2000)

    Weeks 1, 9, 14, 26

  • Hamilton Anxiety Rating Scale (HAM-A; Hamilton, 1959)

    Weeks 1, 9, 14, 26

  • +9 more secondary outcomes

Other Outcomes (4)

  • Childhood Trauma Questionnaire (CTQ; Original: Bernstein & Fink, 1998; German: Wingenfeld et al., 2010)

    Baseline

  • Quality and quantity of daily social contacts

    Three one-week EMA surveys (3 weeks in total: week 1-2, week 8-9, week 15-16)

  • Inventory for the Assessment of Negative Effects of Psychotherapy (INEP; Ladwig et al., 2014)

    Weeks 1, 14, 26

  • +1 more other outcomes

Study Arms (2)

Kiesler Circle Training (KCT) + Cognitive Behavioral Therapy (CBT)

EXPERIMENTAL

The Kiesler Circle Training (KCT) consists of 12 weekly group sessions of 100 minutes each (in a group of max. 10 patients). In addition, all patients receive weekly individual state-of-the-art CBT sessions (50 minutes each).

Behavioral: Kiesler Circle Training (KCT)Behavioral: Cognitive Behavioral Therapy (CBT)

Cognitive Behavioral Therapy (CBT)

ACTIVE COMPARATOR

The patients receive weekly individual state-of-the-art CBT sessions (50 minutes each).

Behavioral: Cognitive Behavioral Therapy (CBT)

Interventions

Kiesler Circle Training is a transdiagnostic modular group treatment, which comprises a baseline module and four additional independent modules (nonverbal communication, verbal communication, conflict training and empathy and corrective interpersonal experiences). KCT is based on a heuristic model to explain and anticipate interactions developed by Donald Kiesler and other representatives of the interpersonal theory. The circumplex model arranges the variety of interpersonal behaviors in terms of a circular continuum allocated on two orthogonal axes: The vertical axis addresses interpersonal control (agency), the horizontal axis addresses interpersonal communion. The model further allows illustrating complementary action tendencies to anticipate other's reactions and to guide own behavior to achieve interpersonal goals. KCT is designed for increasing the awareness of such interpersonal action tendencies and for improving interpersonal behavioral flexibility.

Kiesler Circle Training (KCT) + Cognitive Behavioral Therapy (CBT)

Cognitive Behavioral Therapy is based on the interrelationships of thoughts, actions and feelings. Presumably, individual CBT will address intrapersonal therapeutic foci such as behavioral activation, identification of dysfunctional thoughts, overcoming fears by exposure, etc. Individual CBT may also include interpersonal functioning as therapeutic foci. Disorder-specific treatment manuals are available for all diagnoses included in the study. Of note, state-of-the-art CBT does not necessarily mean, that individual CBT-sessions strictly adhere to a manual. However, because both study sites are CBT training institutes, which guarantee supervision at least every four hours, it can be estimated that state-of-the-art CBT is realized.

Cognitive Behavioral Therapy (CBT)Kiesler Circle Training (KCT) + Cognitive Behavioral Therapy (CBT)

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Sufficient knowledge of the German language (B2 level)
  • Primary diagnosis of either depressive disorder or anxiety disorder according to DSM-5 at time of screening
  • Interpersonal distress above average (IIP-32 \> 1.81) at time of screening
  • Ongoing individual CBT at time of screening
  • Signed informed consent regarding the study protocol

You may not qualify if:

  • Acute suicidality at time of screening
  • Active substance abuse at time of screening
  • Borderline, antisocial, schizoid or schizotypic personality disorder at time of screening
  • Inability to participate in outpatient treatment with additional weekly group appointment at time of screening
  • Any kind of additional group treatment (including self-help groups) besides individual CBT during the entire study period

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Charité

Berlin, Germany

Location

Related Publications (1)

  • Ollrogge K, Schulze D, Sterzer P, Kohler S, Friedel E, Romanczuk-Seiferth N, Siegerist AL, Brakemeier EL, Guhn A. Cognitive behavioural therapy plus Kiesler Circle Training (CBT+) versus CBT only for patients with interpersonal problems: study protocol for a randomised controlled feasibility trial. BMJ Open. 2025 Feb 11;15(2):e098466. doi: 10.1136/bmjopen-2024-098466.

MeSH Terms

Conditions

Depressive DisorderAnxiety DisordersDepression

Interventions

Cognitive Behavioral Therapy

Condition Hierarchy (Ancestors)

Mood DisordersMental DisordersBehavioral SymptomsBehavior

Intervention Hierarchy (Ancestors)

Behavior TherapyPsychotherapyBehavioral Disciplines and Activities

Study Officials

  • Anne Guhn, Dr.

    Charite University, Berlin, Germany

    PRINCIPAL INVESTIGATOR
  • Eva-Lotta Brakemeier, Prof. Dr.

    University of Greifswald

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
Due to the nature of interventions, blinding of patients/therapists concerning the treatment is impossible, but all assessments as well as data analysis will be blinded to treatment allocation.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: prospective, bicenter, evaluator- and statistician-blinded, randomized clinical trial with an active control condition
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Dr. rer. nat.

Study Record Dates

First Submitted

December 4, 2023

First Posted

December 14, 2023

Study Start

July 3, 2024

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

October 1, 2026

Last Updated

March 4, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will share

Following the Open Science guidelines of the German Psychological Association (DGPS), anonymized data will be made available via the Open Data portal of the Open Science Foundation (www.osf.io). The data will be stored after the completion of data collection, but not before 01.06.2026. This practice enables external parties to replicate the analyses mentioned in scientific publications and to perform ad hoc analyses. The data is permanently stored on servers located in Germany. Once uploaded and published, these anonymized data cannot be deleted and are exempt from deletion even if a study participant later decides to revoke their participation.

Shared Documents
STUDY PROTOCOL, SAP, ICF, CSR
Time Frame
We will make the outcome data and then the covariate data freely available after our respective publications, but not before 01.06.2026.
Access Criteria
Data will be shared with the public; data will be made available for all what types of analyses; the mechanism by which the data will be made available will be determined soon.

Locations