Publications by authors named "Matthias Backenstrass"

Background: Available treatments for older patients with primary diffuse large B-cell CNS lymphoma (PCNSL) offer progression-free survival of up to 16 months. We aimed to investigate an intensified treatment of high-dose chemotherapy and autologous haematopoietic stem-cell transplantation (HSCT) in older patients with PCNSL.

Methods: MARTA was a prospective, single-arm, phase 2 study done at 15 research hospitals in Germany.

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Background: Older primary central nervous system lymphoma (PCNSL) patients have an inferior prognosis compared to younger patients because available evidence on best treatment is scarce and treatment delivery is challenging due to comorbidities and reduced performance status. High-dose chemotherapy and autologous stem cell transplantation (HCT-ASCT) after high-dose methotrexate (MTX)-based immuno-chemotherapy has become an increasingly used treatment approach in eligible elderly PCNSL patients with promising feasibility and efficacy, but has not been compared with conventional chemotherapy approaches. In addition, eligibility for HCT-ASCT in elderly PCNSL is not well defined.

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In the treatment of persistent depressive disorder (PDD), disorder-specific Cognitive Behavioral Analysis System of Psychotherapy (CBASP) has been shown to be superior to Supportive Psychotherapy (SP) in outpatients. It remains to clear which subgroups of patients benefit equally and differentially from both psychotherapies. To identify those patient-level baseline characteristics that predict a comparable treatment effectiveness of CBASP and SP and those that moderate the differential effectiveness of CBASP compared to SP.

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Does the pre-treatment profile of individuals with persistent depressive disorder (PDD) moderate their benefit from disorder-specific Cognitive Behavioral System of Psychotherapy (CBASP) versus supportive psychotherapy (SP)? We investigated this question by analyzing data from a multi-center randomized clinical trial comparing the effectiveness of 48 weeks of CBASP to SP in n  =  237 patients with early-onset PDD who were not taking antidepressant medication. We statistically developed an optimal composite moderator as a weighted combination of 13 preselected baseline variables and used it for identifying and characterizing subgroups for which CABSP may be preferable to SP or vice versa. We identified two distinct subgroups: 58.

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Background: In spite of the psychosocial burden and medical risks associated with skin picking disorder, the health care system does not provide sufficient treatment for affected individuals to date. Therefore, an internet-based self-help program for skin picking was developed to offer easily accessible support for this population.

Objective: This pilot study evaluated the internet-based self-help program SaveMySkin.

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Background: Evidence on the long-term efficacy of psychotherapeutic approaches for chronic depression is scarce.

Objective: To evaluate the effects of the Cognitive Behavioral Analysis System of Psychotherapy (CBASP) compared to Supportive Psychotherapy (SP) 1 year and 2 years after treatment termination.

Methods: In this study, we present 1- and 2-year follow-up assessments of a prospective, multicenter, evaluator-blinded, randomized clinical trial of outpatients with early-onset chronic major depression (n = 268).

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Background: Skin picking disorder is an under-recognized and understudied mental disorder associated with severe psychological and medical consequences. Affected individuals barely receive adequate treatment, given the scarcity of expertise in healthcare professionals and the lack of evidence-based interventions.The present study seeks to evaluate an Internet-based self-help intervention for skin picking ("SaveMySkin") within a pilot study.

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Background: Smartphone-based disease management has become increasingly interesting for research in the field of bipolar disorders. This article investigates the attitudes of persons affected by this disorder towards the appropriation of mobile apps or assistance systems for the management of their disease.

Methods: We conducted two separate studies.

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Importance: Chronic depression is a highly prevalent and disabling disorder. There is a recognized need to assess the value of long-term disorder-specific psychotherapy.

Objective: To evaluate the efficacy of the Cognitive Behavioral Analysis System of Psychotherapy (CBASP) compared with that of nonspecific supportive psychotherapy (SP).

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Background: Skin picking disorder has received growing attention since the release of DSM-5, yet there are no evidence-based assessment instruments for adolescent samples.

Aim: The present study examines the psychometric properties of the Skin Picking Scale-Revised (SPS-R, German version) in adolescents.

Methods: A total of 76 adolescents (96% female) completed the SPS-R, the Clinical Psychological Diagnostic System (KPD-38), and a questionnaire assessing demographics and clinical characteristics online.

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At least since the introduction of the official diagnosis Excoriation (Skin-Picking) Disorder in the DSM-5 [1], dermatillomania is an important and growing field of research. Despite the high importance currently a huge lack of German assessment instruments exists. Aim of the present study was the examination of the psychometric properties of the German translation of the Skin Picking Scale-Revised [2].

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Background: Strategies to improve the life of patients suffering from recurrent major depression have a high relevance. This study examined the efficacy of 2 Internet-delivered augmentation strategies that aim to prolong symptom-free intervals.

Methods: Efficacy was tested in a 3-arm, multicenter, open-label, evaluator-blind, randomized controlled trial.

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Self-focused attention (SFA) is considered a cognitive bias that is closely related to depression. However, it is not yet well understood whether it represents a disorder-specific or a trans-diagnostic phenomenon and which role the valence of a given context is playing in this regard. Computerized quantitative text-analysis offers an integrative psycho-linguistic approach that may help to provide new insights into these complex relationships.

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Background: Previous studies suggest that mood-incongruent processing constitutes an adaptive mood regulation strategy, and that difficulties in this process may contribute to the maintenance of depression. However, no study has yet examined whether mood-incongruent processing predicts the course and severity of clinical depression.

Methods: To address this question, the present study used a prospective, longitudinal design to examine the effects of mood-incongruent processing in a sample of 59 clinically depressed patients.

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Background: Cognitive reactivity is the change in depressive thinking in response to negative mood. Previous research indicates that cognitive reactivity is an important variable in the etiology and course of depression. The present study tested which time interval after a negative mood induction is critical for the prediction of the depression risk.

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Background: Although chronic depression is associated with lower global functioning and poorer treatment response than episodic depression, little is known about the differences between these two forms of depression in terms of psychological factors. Thus, the present study aimed at differentiating chronic and episodic depression regarding cognitive-behavioral and emotional avoidance that have been proposed as important risk factors for depression and promising targets for the treatment of depression.

Methods: Thirty patients with early onset chronic depression were compared with 30 patients with episodic depression and 30 healthy, never-depressed controls in terms of self-reported cognitive-behavioral (social and non-social) and emotional avoidance.

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Inconsistent results in neuropsychological research of obsessive-compulsive disorder (OCD) may be the result of the heterogeneous nature of OCD symptoms. The most frequently investigated symptoms are contamination/cleaning and doubt/checking. The aim of this review was to determine whether OCD washers and checkers differ in their neuropsychological performance.

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Three studies examined negative mood regulation expectancies (NMRE) and affective traits as independent predictors of self-reported symptoms of emotional distress. NMRE represent individuals' beliefs that they can alleviate unpleasant emotional states. Stronger NMRE are associated with more adaptive coping, more positive cognition during negative moods, more effective responses under stress and less emotional distress.

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Background: Self-generated coping strategies and the enhancement of coping strategies are effective in the treatment of psychotic symptoms. Evaluating these strategies can be of clinical interest to develop better coping enhancement therapies. Cognitive models consider delusions as multidimensional phenomena.

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Unlabelled: The present study tested a theoretically derived link between rumination and depressive symptoms through behavioural avoidance and reduced motive satisfaction as a key aspect of positive reinforcement. Rumination, behavioural avoidance, motive satisfaction and levels of depression were assessed via self-report measures in a clinical sample of 160 patients with major depressive disorder. Path analysis-based mediation analysis was used to estimate the direct and indirect effects as proposed by the theoretical model.

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Major depression is a highly prevalent, disabling disorder associated with loss of quality of life and large economic burden for the society. Depressive disorders often follow a chronic or recurrent course. The risk of relapses increases with each additional episode.

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Objective: This article introduces a Spanish version of the Generalized Expectancies for Negative Mood Regulation Scale (NMR-S) and tests the reliability and the validity of the new questionnaire.

Methods: A sample of 360 students from Chile completed the NMR-S along with instruments measuring depressive symptoms, social desirability, coping, and emotion regulation.

Results: A factor analysis indicated that the NMR-S has a one-dimensional structure.

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