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NCT Number: NCT05645172

Retention Rate of Acalabrutinib in a Non-interventional Setting

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.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Chronic Lymphocytic Leukaemia (CLL) Hematologic Diseases Hemic and Lymphatic Diseases Immune System Diseases Immunoproliferative Disorders Leukemia Leukemia, B-Cell Leukemia, Lymphoid Lymphatic Diseases Lymphoproliferative Disorders Neoplasms Neoplasms by Histologic Type

Age range

18 year–99 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Research Site, D Ren, Germany

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About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age ≥ 18 years
  • Diagnosis of CLL
  • Ability to understand the study concept and to regularly complete patient questionnaires from physical, mental, and linguistic perspectives
  • Decision to start therapy with acalabrutinib according to the current SmPC. For previously untreated patients as continuous therapy with or without obinutuzumab. OR For patients with at least one prior CLL therapy as continuous monotherapy.
  • Provision of signed informed consent form

Exclusion criteria

  • Current or planned participation in an interventional clinical trial
  • Contraindications to treatment with acalabrutinib according to the current SmPC
  • Pregnancy or breast feeding
  • Disease progression on prior BTKi therapy
  • Start of acalabrutinib therapy more than 28 days prior to enrolment

Treatment and study plan

Primary outcomes

  1. Retention rate of CLL

    Time frame: 1 year

    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.

Secondary outcomes

  1. Retention rate of CLL

    Time frame: 2 years

    The secondary outcome is the retention rate of CLL patients receiving acalabrutinib in clinical practice after 2 years.

  2. General treatment adherence

    Time frame: assessed at baseline and 6, 12, and 24 months after start of acalabrutinib treatment

    General treatment adherence will be assessed over the whole observational period by the self-reported, 8-item structured MMAS-8 questionnaire.

  3. reasons for and duration of therapy interruptions

    Time frame: time from first prescription until therapy interruptions; assessed up to 40 months

    Based on acalabrutinib treatment details, the reasons for and duration of therapy interruptions will be calculated and analysed.

  4. TTD

    Time frame: time from start of acalabrutinib treatment until the date of final discontinuation or death; assessed up to 40 months.

    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.

  5. TTNT

    Time frame: time from start of acalabrutinib treatment until start of a subsequent CLL treatment; assessed up to 40 months.

    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.

  6. TTNT-D

    Time frame: time from start of acalabrutinib treatment until start of a subsequent CLL treatment or death; assessed up to 40 months

    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.

  7. Treatment efficacy and PFS

    Time frame: time from start of acalabrutinib treatment until disease progression or death by any cause, whichever occurs first; assessed up to 40 months.

    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.

  8. Overall survival

    Time frame: time from start of acalabrutinib treatment until death by any cause; assessed up to 40 months.

    Overall survival will be calculated as the time from first prescription until death by any cause.

  9. Patient- and disease-specific factors possibly affecting the retention rate

    Time frame: up to 40 months

    Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables:

    • Treatment effectiveness (treatment response, PFS)

  10. Healths-related Quality of Life (HRQoL)-QLQ-C30

    Time frame: Patient questionnaires will becollected at time points synchronised with regular visits during study, assessed up to 40 months

    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.

  11. Healths-related Quality of Life (HRQoL)-EQ-5D-5L

    Time frame: Patient questionnaires will becollected at time points synchronised with regular visits during study, assessed up to 40 months

    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.

  12. Patient- and disease-specific factors possibly affecting the retention rate

    Time frame: up to 40 months

    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).

  13. Patient- and disease-specific factors possibly affecting the retention rate

    Time frame: up to 40 months

    Patient- and disease-specific factors possibly affecting the retention rate will be analysed for associations with the following variables:

    • Treatment adherence (MMAS-8).

  14. Patient- and disease-specific factors possibly affecting the retention rate (Psychological patient segmentation)

    Time frame: at Baseline

    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

  15. Patient- and disease-specific factors possibly affecting the retention rate

    Time frame: up to 40 months

    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)

Sponsors and collaborators

Lead sponsor

AstraZeneca

Industry

Registry information

Acronym: RETAIN

Important dates

Study start
2022
Primary completion
2026
Study completion
2026
First posted
Dec 9, 2022
Registry last updated
Dec 1, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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