Subcutaneous Alemtuzumab Combined With Oral Dexamethasone, Followed by Alemtuzumab Maintenance or Allo-SCT in CLL With 17p- or Refractory to Fludarabine

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01392079
Recruitment Status : Unknown
Verified May 2015 by Stephan Stilgenbauer, University of Ulm.
Recruitment status was:  Active, not recruiting
First Posted : July 12, 2011
Last Update Posted : May 28, 2015
IMSE, TU Munich (Biometry)
WiSP Wissenschaftlicher Service Pharma GmbH
German CLL Study Group
Information provided by (Responsible Party):
Stephan Stilgenbauer, University of Ulm

Brief Summary:

Aims and objectives

  • Assessment of the efficacy of the study treatment in the study population in terms of response rate, progression-free survival, failure-free survival and overall survival.
  • Acquisition of further data to expand the data base on the toxicity of the study treatment.
  • Assessment of the efficacy of the study treatment in biological risk groups.
  • Assessment of response in terms of minimal residual disease. Number of patients and estimated duration Total no. of patients: 122 (~29 with 17p deletion for first-line therapy, ~29 with 17p deletion for second- or higher-line treatment, ~65 fludarabine-refractory irrespective of 17p status).

Duration for each patient: Max. 12 weeks of treatment in three 4-week cycles, then up to two years maintenance treatment.

Condition or disease Intervention/treatment Phase
Chronic Lymphocytic Leukemia Drug: Alemtuzumab Phase 2

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Detailed Description:

CLL refractory to therapy based on fludarabine or with 17p deletion has a poor prognosis. Patients with F-refractory CLL have a remission rate of 20% after various salvage regimens and a median overall survival (OS) of <12 months (Keating et al., 2002a). CLL patients with 17p deletion have a median OS of 16 months after first-line treatment with fludarabine or FC in the CLL4 trial of the GCLLSG (Figure 2; Stilgenbauer et al., 2005b; Eichhorst et al., 2006).

Alemtuzumab is the most active single agent in fludarabine-refractory CLL, with remission rates of 30-40% and median OS of 16-28 months (Keating et al., 2002b, Rai et al., 2002). Furthermore, alemtuzumab is of proven efficacy in CLL with 17p deletion and the subcutaneous administration is as effective as the intravenous application (Stilgenbauer & Döhner, 2002, Lozanski et al., 2004, Stilgenbauer et al., 2004).

However, the outcome of fludarabine-refractory CLL is still poor, owing to the facts that the majority of patients do not achieve a remission and that the average duration of remission is short. Therefore, the current trial aims at achieving: (i) a higher remission rate, by adding high-dose dexamethasone to alemtuzumab, and (ii) prolongation of remission duration and survival by alemtuzumab maintenance or allogeneic stem-cell transplantation (SCT). High-dose steroids have shown activity independently of 17p and p53 status, and are effective in debulking large lymph nodes, a weakness of alemtuzumab (Bellosillo et al., 2002, Thornton et al., 2003, Pettitt et al., 2006). Maintenance treatment with alemtuzumab improved remission duration in the CLL4B trial and allogeneic SCT resulted in disease control in high-risk CLL in the CLL3X trial (Wendtner et al., 2004, Dreger et al., 2005).

This is a prospective, open, multi-center Phase II study conducted by the Deutsche CLL Studiengruppe (DCLLSG; German CLL Study Group, GCLLSG). There will be only one treatment group and thus no randomization. The study will be conducted at approximately 40 investigation sites in Germany, Austria and France.

The study will be conducted according to the EG Directive on Good Clinical Practice, the German Arzneimittelgesetz (AMG, 12. Novelle) as well as - with respect to the local activities and regulations - to the corresponding laws in France and Austria.

A total of 122 patients (adults, males and females, in-patients and out-patients; 2 to 10 patients are expected to be recruited by each of the centers) will be recruited, with stratification by detailed diagnosis. The distribution of female and male patients is not relevant for the study as both sexes are affected by CLL and treatment effects are not different in both groups (GCP-V § 7, 2). Recruiting will stop when the 122th. patient has completed the first four-week cycle of treatment. The study will be concluded when the last patient has completed treatment with alemtuzumab according to this protocol. The retrieval of additional follow-up data may be appropriate to achieve mature data in the survival endpoints.

Subcutaneous alemtuzumab (30 mg) will be administered three times weekly (days 1, 3 and 5) along with oral dexamethasone (40 mg/day, days 1-4, every 2 weeks) for at least 4 weeks (corresponding to 12 doses of alemtuzumab, in case of treatment interruption this may take longer than 4 weeks) and, for patients who show at least SD, a maximum of 12 weeks (36 doses of alemtuzumab, in case of treatment interruption this may take longer than 12 weeks). Thereafter, maintenance therapy with alemtuzumab will be instituted for a maximum of two years. If CR (including bone marrow histology and imaging (chest X-ray and ultrasound, CT if indicated) is documented before week 12, i.e. after week 4 (12 doses of 30 mg alemtuzumab) or 8 (24 doses of 30 mg alemtuzumab), maintenance treatment with alemtuzumab will be instituted at this time point.

In this study it is recommended to start the dose of alemtuzumab directly at 30 mg. However, the dose of alemtuzumab can be increased gradually (3 mg day -2, 10 mg day -1 and 30 mg day 1, as in earlier studies), according to the investigators discretion.

Staging will be performed at inclusion to the study and after 12 doses of alemtuzumab (aim: at the end of Week 4), after 24 doses of alemtuzumab (aim: at the end of Week 8), and after 36 doses of alemtuzumab (aim: at the end of Week 12) of treatment. Patients showing progressive disease (PD) (according to NCI criteria) will be withdrawn from the study. If hematological or other toxicity is seen, treatment will be interrupted and the dose will be reduced according to the prescription information.

If after 12 weeks there is stable disease (SD), partial response (PR) or complete response (CR), then maintenance treatment will be given, with continued subcutaneous alemtuzumab (30 mg every 14 days). Patients for whom stem-cell transplantation is a realistic treatment option will be offered the possibility of receiving allogeneic stem-cell treatment in another clinical trial (CLLX2 or other GCLLSG trial). The latter will however only be offered if (1) the patient is eligible according to protocol and (2) a HLA-compatible donor is available who has given his/her informed consent. There should be a treatment-free period of at least 2 months before SCT, details are specified in the corresponding protocol.

Appropriate premedication and infection prophylaxis will be administered. After each disease staging (i.e. every three months during the maintenance phase), if there is SD, PR or CR, then patients will continue study therapy (alemtuzumab maintenance). Maintenance therapy will be stopped after two years.

During the study, continual monitoring of efficacy and toxicity will be performed. Early stopping rules will be applied if major intolerability is observed.

Response will be assessed by clinical examination, blood counts, clinical chemistry, chest X-ray (plain radiograph of the chest), ultrasound of the abdomen, CT scanning (if indicated), bone marrow cytology and histology (only in cases of possible CR), and assessment of MRD (for molecular response rate only). Time points for response evaluation according to NCI criteria will be after 12 doses, 24 doses, and 36 doses of alemtuzumab. For an uninterrupted treatment course, this will be after 4, 8 and 12 weeks respectively. (If treatment with alemtuzumab is interrupted, then the time points for all subsequent doses, assessments and other procedures will be delayed correspondingly; i.e., the number of doses is the determining factor for elapsed treatment time, and not the calendar date; see above, "Staging will be performed...".) Follow-up assessment will continue at three-month intervals for at least three years.

The following time schedule is anticipated for the study:

  • Start of recruitment: January 2008
  • End of recruitment: September 2011
  • End of study procedures (conclusion of maintenance therapy): December 2013 (plus eventual additional follow-up)

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 135 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Prospective, Multi-center Phase II Study of Subcutaneous Alemtuzumab Combined With Oral Dexamethasone, Followed by Alemtuzumab Maintenance or Allogeneic Stem-cell Transplantation, in Chronic Lymphocytic Leukemia Which is Associated With 17p Deletion or is Refractory to Fludarabine
Study Start Date : February 2008
Actual Primary Completion Date : December 2014
Estimated Study Completion Date : December 2016

Arm Intervention/treatment
Experimental: Alemtuzumab

30 mg alemtuzumab will be administered subcutaneously 3 times weekly for 4 weeks (total of 12 doses of 30 mg alemtuzumab) with premedication (as needed) and infection prophylaxis; combined with oral dexamethasone 40 mg total dose for 4 days every 2 weeks; evaluation at end of cycle (i.e. after 12 doses of 30 mg alemtuzumab).

If CR is documented after week 4 (12 doses of 30 mg alemtuzumab) or 8 (24 doses of 30 mg alemtuzumab), maintenance treatment with alemtuzumab or withdrawal from the study and stem cell transplantation will be instituted at this time point.

After a maximum of three 4-week cycles (total of 36 doses of 30 mg alemtuzumab, in case of interruptions this may take longer than 12 weeks), maintenance treatment with alemtuzumab or withdrawal from the study and stem cell transplantation will be instituted. Maintenance treatment with alemtuzumab will continue for a maximum of two years, with evaluation every three months, unless there is PD.

Drug: Alemtuzumab
Alemtuzumab 30 mg s.c. 3 × weekly for 28 days (Days 1, 3, 5; 8, 10, 12; etc.)

Primary Outcome Measures :
  1. Response rate [ Time Frame: 2.5 years ]

    Time points for response evaluation according to NCI criteria will be:

    • The end of each treatment cycle: after 12 doses (4 weeks actual treatment), 24 doses (8 weeks actual treatment), and 36 doses (12 weeks actual treatment) of alemtuzumab
    • During maintenance therapy, every three months
    • During follow-up, every three months
    • A final response assessment will be made at the end of study treatment if the patient's participation is ended at a point other than one of those specified above.

Secondary Outcome Measures :
  1. Progression-free-survival [ Time Frame: up to five years ]
    Progression-free survival: time from study entry to the detection of progressive disease according to NCI criteria or death of any cause, whichever occurs first.

  2. Failure-free survival [ Time Frame: up to five years ]
    Failure-free survival: time from study entry until next treatment, detection of progressive disease according to NCI criteria or death of any cause, whichever occurs first.

  3. Overall survival [ Time Frame: up to five years ]
    Time from study entry to death of any cause.

  4. Number of participants with Adverse Events as a measure of safety and tolerability [ Time Frame: up to 2.5 years ]
    Acquisition of further data to expand the data base on the toxicity of the study treatment. (Type, frequency, severity, timing and relatedness of AEs and laboratory abnormalities observed during different treatment cycles)

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. The patient has CLL requiring treatment (Binet C or A/B with "active disease" according to the NCI criteria).
  2. One or both of the following is true:

    • The patient's disease is refractory to a previous fludarabine-containing regimen, defined as no CR or PR according to NCI criteria, or progression within 6 months after a fludarabine-containing regime. (N.B.: Within the framework of this trial, the term "fludarabine-refractory" is synonymous to a refractory status to any established purine analogue (i.e. pentostatin, cladribine); this also encompasses bendamustine, as this drug molecule contains both an alkylating and a purine analogue moiety. Acc. to experimental findings and clinical experience, its mechanism of action differs distinctly from that of a pure alkylator (Cheson et al., 2009, Leoni et al., 2008)).
    • 17p deletion is present (irrespective of whether previously treated or untreated).
  3. The patient is at least 18 years of age.
  4. The patient's performance status is 0, 1 or 2 on the WHO/ECOG scale.
  5. Any previous chemotherapy and/or immunotherapy ended at least four weeks before the first study treatment with alemtuzumab.
  6. The patient has recovered from all previous chemotherapy and/or immunotherapy.
  7. For fertile men and for women of childbearing potential: Adequate contraception (oral contraceptives, intrauterine device or barrier method in conjunction with spermicidal jelly).
  8. The patient has given written informed consent to participate in the study.

Exclusion Criteria:

  1. The patient has received more than five different prior therapeutic regimens.
  2. Any major organ dysfunction is present (e.g. unstable angina pectoris, NYHA III/IV heart insufficiency, significant coronary stenoses, uncontrolled diabetes mellitus, uncontrolled hypertension, pulmonary disease with hypoxemia, renal failure).
  3. Any of the following laboratory values are found at the screening visit to be >2 × the upper limit of the normal range: serum creatinine, serum bilirubin, ASAT, ALAT.
  4. Any active infection is present.
  5. B-PLL or Richter transformation is diagnosed or suspected (e.g. symptoms or cytology).
  6. There is involvement of the central nervous system.
  7. The patient is known to be positive for human immunodeficiency virus (HIV).
  8. CMV viremia is present, as demonstrated by pp65 EA or CMV-DNA.
  9. The patient has previously been treated with alemtuzumab. (Exception: alemtuzumab used in a "non-therapeutic" context, i.e. administered as part of a conditioning regimen prior to SCT).
  10. The patient has received autologous or allogeneic SCT within the past six months.
  11. The patient is receiving long-term systemic treatment with corticosteroids or has received such treatment in the four weeks before first treatment with alemtuzumab.
  12. Any additional active malignancy is present.
  13. The patient has ever had an anaphylactic response to humanized antibodies.
  14. For female patients: The patient is pregnant or lactating.
  15. The patient has a history of drug or alcohol abuse that might lead to inability to comply with the protocol.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01392079

Hanuschkrankenhaus Wien
Wien, Austria
University Hospital
Wien, Austria
Centre Hospitalier de la Côte Basque
Bayonne, France
Hopital Avicenne
Bobigny Cedex, France, 93009
CHU Estaing
Clermont-Ferrand, France
Hôpital Henri Mondor, Creteil -APHP
CRETEIL Cedex, France
CHU de Grenoble
Grenoble, France
CHU Claude Huriez
Lille, France
Hôpital Edouard Herriot Lyon
Lyon, France
CHU de Nancy
NANCY Cedex, France
CHU Nantes
Nantes, France
Hôpital Pitié Salpêtrière Paris-APHP
Paris, France
Hôpital Saint-Louis Paris -APHP
Paris, France
Centre Hospitalier Marechal Joffre Hôpital Saint-Jean Perpignan
PERPIGNAN Cedex, France
CHU de Poitiers
POITIERS Cedex, France
CHU Robert-Debre
Reims, France, 51092
CHU de Tours
Tours, France
Charité CBF Berlin
Berlin, Germany
University of Cologne
Cologne, Germany
Dresden Universtiy Hospital
Dresden, Germany
Essen University
Essen, Germany
Freiburg University
Freiburg, Germany
Goettingen University
Goettingen, Germany
LMU Munich
Grosshadern, Germany
AK St. Georg Hamburg
Hamburg, Germany
Hannover medical school (MHH)
Hannover, Germany
Heidelberg University
Heidelberg, Germany
Homburg/Saar University
Homburg/Saar, Germany
Dr. Soeling Kassel
Kassel, Germany
Kiel University
Kiel, Germany
Mainz University
Mainz, Germany
TU Munich
Munich, Germany
Nuernberg University Hospital
Nuernberg, Germany
OncoProGbR Regensburg
Regensburg, Germany
Universtiy of Tuebingen
Tuebingen, Germany
University of ulm
Ulm, Germany, 89081
Dr. Schlag Wuerzburg
Wuerzburg, Germany
University Hospital Wuerzburg
Wuerzburg, Germany
Sponsors and Collaborators
University of Ulm
IMSE, TU Munich (Biometry)
WiSP Wissenschaftlicher Service Pharma GmbH
German CLL Study Group
Principal Investigator: Stephan Stilgenbauer, Prof Dr med University of Ulm

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Stephan Stilgenbauer, Prof. Dr. med., University of Ulm Identifier: NCT01392079     History of Changes
Other Study ID Numbers: Cll2O
2007-003099-20 ( EudraCT Number )
First Posted: July 12, 2011    Key Record Dates
Last Update Posted: May 28, 2015
Last Verified: May 2015

Keywords provided by Stephan Stilgenbauer, University of Ulm:
17p deletion
refractory to fludarabine
subcutaneous alemtuzumab
CLL with 17p- or refractory to fludarabine

Additional relevant MeSH terms:
Leukemia, Lymphoid
Leukemia, Lymphocytic, Chronic, B-Cell
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Leukemia, B-Cell
Dexamethasone acetate
Fludarabine phosphate
BB 1101
Anti-Inflammatory Agents
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Gastrointestinal Agents
Hormones, Hormone Substitutes, and Hormone Antagonists
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Protease Inhibitors
Enzyme Inhibitors