Retention rate of acalabrutinib in a non-interventional setting. This is a prospective, multicentre, non-interventional study to collect real-world data on retention rates of CLL patients prescribed with acalabrutinib in Germany.
This observational study will prospectively assess acalabrutinib therapy retention of CLL patients one year and 2 years after treatment initiation with acalabrutinib in routine clinical practice. Furthermore, therapy adherence, treatment efficacy, overall survival, and QoL to analyse the possible influence of psychological aspects of the patient-based disease perception, a four-group-segmentation for acceptance and perceived control of the health state will be conducted. Finally, disease-, treatment-, and patient-specific factors possibly affecting therapy retention will be analysed: sociodemographic factors, disease and treatment characteristics, comorbidities, therapy adherence, treatment effectiveness, safety, QoL, and psychological segmentation.
Study Type
OBSERVATIONAL
Enrollment
137
Retention rate of CLL
The primary outcome of this study is the retention rate of CLL patients receiving acalabrutinib in clinical practice after 1 year (= ratio of the number of patients still being prescribed acalabrutinib after 1 year to the number of patients at risk). Cases of death, ongoing treatment interruption, and lost to follow-up will be counted as patients not still being prescribed with acalabrutinib.
Time frame: 1 year
Retention rate of CLL
The secondary outcome is the retention rate of CLL patients receiving acalabrutinib in clinical practice after 2 years.
Time frame: 2 years
General treatment adherence
General treatment adherence will be assessed over the whole observational period by the self-reported, 8-item structured MMAS-8 questionnaire.
Time frame: assessed at baseline and 6, 12, and 24 months after start of acalabrutinib treatment
reasons for and duration of therapy interruptions
Based on acalabrutinib treatment details, the reasons for and duration of therapy interruptions will be calculated and analysed.
Time frame: time from first prescription until therapy interruptions; assessed up to 40 months
TTD
Based on acalabrutinib treatment details, the TTD, defined as the time from first prescription until the date of last intake or death, whichever occurs first, will be calculated and the reasons for therapy discontinuation will be analysed.
Time frame: time from start of acalabrutinib treatment until the date of final discontinuation or death; assessed up to 40 months.
TTNT
Based on acalabrutinib treatment details, the TTNT, defined as the time of first prescription until start date of the next CLL treatment will be calculated and the reasons for switch of treatment will be analysed. Cases of death will be censored and not considered as TTNT-relevant event.
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Research Site
D Ren, Germany, Germany
Research Site
Herrsching am Ammersee, Germany, Germany
Research Site
L Rrach, Germany, Germany
Research Site
M Nchen, Germany, Germany
Research Site
M Nchen, Germany, Germany
Research Site
N Rnberg, Germany, Germany
Research Site
Neustadt Am R Benberge, Germany, Germany
Research Site
Saarbr Cken, Germany, Germany
Research Site
Sindelfinden, Germany, Germany
Research Site
W Rselen, Germany, Germany
...and 51 more locations
Time frame: time from start of acalabrutinib treatment until start of a subsequent CLL treatment; assessed up to 40 months.
TTNT-D
Based on acalabrutinib treatment details, the TTNT-D, defined as the time of first prescription until start date of the next CLL treatment or death, whichever occurs first, will be calculated.
Time frame: time from start of acalabrutinib treatment until start of a subsequent CLL treatment or death; assessed up to 40 months
Treatment efficacy and PFS
Treatment efficacy will be analysed by means of the overall treatment response (CR, PR, PRL, judged by the treating physician and recommended to be in accordance with the guidelines of the International Workshop on Chronic Lymphocytic Leukemia (iwCLL), modified for persistent lymphocytosis, the time to and duration of response, the percentage of patients without treatment response (SD, PD), as well as the time of PFS, defined as the time of first prescription until progression of the disease or death by any cause, whichever occurs first.
Time frame: time from start of acalabrutinib treatment until disease progression or death by any cause, whichever occurs first; assessed up to 40 months.
Overall survival
Overall survival will be calculated as the time from first prescription until death by any cause.
Time frame: time from start of acalabrutinib treatment until death by any cause; assessed up to 40 months.
Patient- and disease-specific factors possibly affecting the retention rate
Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables: \- Treatment effectiveness (treatment response, PFS)
Time frame: up to 40 months
Healths-related Quality of Life (HRQoL)-QLQ-C30
The QoL, as measured by the self-reported QLQ-C30 questionnaires, will be assessed at baseline and every quarterly regular follow-up visit thereafter until end of observation. The time course of the QoL will be visualised and the mean difference from baseline until 6, 12, and 24 months after start of therapy will be calculated. Clinical significance will be defined as minimal important differences (MIDs) of at least 10 points (in either direction) for total scores or subscales of the QLQ-C30.
Time frame: Patient questionnaires will becollected at time points synchronised with regular visits during study, assessed up to 40 months
Healths-related Quality of Life (HRQoL)-EQ-5D-5L
The QoL, as measured by the self-reported EQ-5D-5L questionnaires, will be assessed at baseline and every quarterly regular follow-up visit thereafter until end of observation. The time course of the QoL will be visualised and the mean difference from baseline until 6, 12, and 24 months after start of therapy will be calculated.
Time frame: Patient questionnaires will becollected at time points synchronised with regular visits during study, assessed up to 40 months
Patient- and disease-specific factors possibly affecting the retention rate
Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables: \- Patient- and disease-specific characteristics (sociodemographic data, disease characteristics and severity, comorbidities (CIRS), comedication).
Time frame: up to 40 months
Patient- and disease-specific factors possibly affecting the retention rate
Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables: \- Treatment adherence (MMAS-8).
Time frame: up to 40 months
Patient- and disease-specific factors possibly affecting the retention rate (Psychological patient segmentation)
Psychological patient segmentation as determinant for the disease acceptance and disease control will be performed during the baseline visit by using a questionnaire published by Bloem et al. in 2020
Time frame: at Baseline
Patient- and disease-specific factors possibly affecting the retention rate
Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables: \- Safety (rate, severity, and duration of SAEs and ADRs)
Time frame: up to 40 months