CLL-Registry: Registry of the German CLL Study Group

German CLL Study Group (Other)
Overall Status
Recruiting ID

Study Details

Study Description

Brief Summary

Long term follow-up of patients with chronic lymphocytic leukemia (CLL), B-prolymphocytic leukemia (B-PLL), T-cell prolymphocytic leukemia (T-PLL), Small lymphocytic lymphoma (SLL), T/Natural Killer large granular lymphocyte leukemia (T or NK-LGL), Hairy cell leukemia (HCL) and Richter's transformation

Detailed Description

The most frequent primary endpoint in phase III trials of CLL is progression-free survival (PFS). However, the most important endpoint is overall survival (OS) which is usually a secondary endpoint in such trials. The outcome after progression is critical and responses to second and subsequent therapies may differ between the trial arms. Therefore it is essential to assess OS in addition to PFS. In addition, late toxicities, such as myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML), Epstein-Barr virus (EBV)-associated lymphoproliferative disease or Hodgkin's disease, late opportunistic infections and second malignancies, are increasingly seen and are likely to differ depending on the intensity of therapy. Moreover, meta-analysis of several phase III trials with long follow-periods are desirable. Similarly, valid analyses of biological disease characteristics in relation to outcome are depending on large collections of clinical data with mature follow-up.

The findings of the CLL8 study provide evidence that the addition of rituximab to chemotherapy with Fludarabine and Cyclophosphamide (FC) may prolong survival of patients with CLL. However, it also opens the question about whether applying such therapy might cause certain late toxicities and whether it improves longterm survival for patients with CLL. Moreover the outcome of subsequent therapies after various first line treatments with Fludarabine (F), FC, Bendamustine and Rituximab (BR) or Fludarabine, Cyclophosphamide and Rituximab (FCR) amongst others outside of clinical trials needs to be investigated further.

Recently published phase III trials in CLL showed median observation times ranging from 22 to 41 months, but most of the trials report observation times around 2 years only. For most of the phase III trials of the German CLL Study Group (GCLLSG) great efforts were made to implement an extended follow up in these trials, but due to administrative reasons the follow up is limited to at most 8 years. This registry should enable the collection of data of the entire course of diseases in- and outside of clinical trials.

Besides CLL other related rare lymphoproliferative malignancies will be included in this registry. On the one hand for historical on the other hand for clinical reasons these diseases are close to CLL and information about them should be gathered as best as possible.

Only limited information is available for patients with SLL, B-PLL, T-PLL, T/NK-LGL, HCL and Richter's transformation. They carry orphan disease status and long-term follow-up data is urgently needed.

To our knowledge there are no comparable registries for patients with CLL, B-PLL, T-PLL, SLL, T/NK-LGL, HCL or Richter's transformation. In order to understand and gain greater insight into the biology, the response to treatment and the outcome of very rare diseases it is extremely important to gather structured information about the patients and their disease centrally.

Study Design

Study Type:
Observational [Patient Registry]
Anticipated Enrollment :
8000 participants
Observational Model:
Time Perspective:
Official Title:
Registry of the German CLL Study Group Long Term Follow-up of Patients With CLL, B-PLL, T-PLL, SLL,T or NK-LGL, HCL and Richter's Transformation
Study Start Date :
Aug 1, 2013
Anticipated Primary Completion Date :
Dec 1, 2025
Anticipated Study Completion Date :
Dec 1, 2025

Outcome Measures

Primary Outcome Measures

  1. Overall Survival [from date of registry entry until date of death, up to 12 years]

    Overall survival will be measured from date of registry entry until date of death

Eligibility Criteria


Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
Accepts Healthy Volunteers:

Inclusion Criteria (all must apply)

  1. Confirmed diagnosis of CLL, B-PLL, T-PLL, SLL, T or NK-LGL, HCL or Richter's transformation

  2. 18 years of age or older

  3. Signed, written informed consent

  4. Presence of one or more of the following disease situations:

  • Newly diagnosed patients without treatment indication (eligible for watch and wait Approach Treatment within a clinical trial according to the AMG or status post participation in a clinical Trial)

  • Treatment with standard therapies approved for the eligible entities or status post treatment (outside of clinical trials)

  • Referral for evaluation the indication for HSCT

  • Relapsed disease status (even if first diagnosis was prior to activation of the registry)

Exclusion Criteria

  1. Patients without confirmed diagnosis of CLL, B-PLL, T-PLL, SLL, T or NK- LGL, HCL or Richter's transformation

  2. Cerebral dysfunction, legal incapacity

Contacts and Locations


Site City State Country Postal Code
1 BAG Freiberg-Richter, Jacobasch, Wolf, Illmer Dresden Sachsen Germany

Sponsors and Collaborators

  • German CLL Study Group


  • Study Director: Michael Hallek, MD, German CLL Study Group, Department I of Internal Medicine University Hospital Cologne

Study Documents (Full-Text)

None provided.

More Information

Additional Information:


None provided.
Responsible Party:
German CLL Study Group Identifier:
Other Study ID Numbers:
  • CLL-Registry
First Posted:
Aug 11, 2016
Last Update Posted:
May 2, 2022
Last Verified:
Apr 1, 2022
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD:
Keywords provided by German CLL Study Group
Additional relevant MeSH terms:

Study Results

No Results Posted as of May 2, 2022