Safety Study of Repeated Dosing of a Cytotoxic Lymphocytes (CTL) Based Prostate Cancer Therapy (ALECSAT)

This study has been completed.
Information provided by (Responsible Party):
CytoVac A/S Identifier:
First received: August 23, 2011
Last updated: April 4, 2013
Last verified: April 2013

This study is a phase I study of a cell based prostate cancer therapy (ALECSAT). Safety and tolerability of a single dose has been shown in 13 prostate cancer patients. In this study 20 prostate cancer patients will receive 3 doses of the ALECSAT treatment. In this therapy specific cells from the patient's own immune system are isolated, activated and re-administered to the patient to boost a specific immune response against the cancer cells. The aim of the study is to show safety and tolerability for repeated dosing of this type of therapy. It is the hypothesis that the cells administered during the therapy will attack the tumor cells and in this way stop or slow down the progression of disease.

Condition Intervention Phase
Hormone-refractory Prostate Cancer
Biological: ALECSAT
Phase 1

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Prospective, Open Phase I Study to Investigate the Tolerability and Efficacy of Administering Repeated Doses of ALECSAT to Prostate Cancer Patients.

Resource links provided by NLM:

Further study details as provided by CytoVac A/S:

Primary Outcome Measures:
  • The primary endpoint is to show safety and tolerability for the repeated administration of ALECSAT to enable further clinical development of the ALECSAT therapy. [ Time Frame: Within 12 weeks ] [ Designated as safety issue: Yes ]

    To show safety and tolerability patients will be monitored closely after administration of ALECSAT and during the follow up period. Heart rate, temperature, blood pressure, Performance status will be monitored. Blood samples will be analysed for: PSA, ALP, LDH, CREAT and Standard haematology: Blood picture (complete blood count, haemogram), leucocytes, Differential count, electrolytes, renal function, and liver count (liver enzymes).

    The number of patients experiencing adverse events (AE), the number and duration of the AE will be reported as a measure of safety and tolerability.

Secondary Outcome Measures:
  • The secondary endpoint for this study is to establish if any indications of a positive therapeutic effect on the prostate cancer may be observed. [ Time Frame: Within 12 weeks ] [ Designated as safety issue: No ]
    PSA levels are monitored as a potential marker for prostate cancer disease progression. Quality of life (EORTC QLQ-C30) and WHO/ECOG performance status scores are measured. Patients with bone metastases that can be quantified by bone scintigraphy will be scanned before and at the end of the study to evaluate tumour progression. Blood samples are collected and blood tests are made for ALP, LDH and CREAT and standard "blood picture" (complete blood count, haemogram), CRP, HGB, leucocytes, differential count, electrolytes, renal function, and liver count (liver enzymes).

Enrollment: 21
Study Start Date: August 2011
Study Completion Date: October 2012
Primary Completion Date: September 2012 (Final data collection date for primary outcome measure)
Intervention Details:
    Biological: ALECSAT
    Autologous activated CTL and NK-cells injected as three intravenous injections interspaced by 5 weeks.
Detailed Description:

This study is a prospective open phase I study to investigate the safety and tolerability of administration of repeated doses of a cell based medicinal product (CBMP) ALECSAT.

ALECSAT is an autologous CBMP that is made from the patient's own blood cells. ALECSAT contains a large amount of tumour specific cytotoxic Lymphocytes (CTL) and Natural Killer (NK) cells that are isolated activated and amplified in number.

The CBMP is given as a slow i. v. injection to patients with prostate cancer. The patients are in the late stage of the disease where they have received hormone treatment but their disease is progressing.

The primary objective of the study is to observe if any side effects or tolerability issues occur as a consequence of the repeated administration of ALECSAT, secondarily it will be observed if changes in PSA levels or any positive anti tumor effect may be observed. The study has the purpose to investigate whether repeated treatment with ALECSAT in any way is toxic.

Trial Design: The study is an open, prospective phase I safety study of ALECSAT in prostate cancer patients.

A group consisting of 4 patients will be treated twice with ALECSAT according to the protocol. Then an interim analysis will be done. If there are no signs of significant toxicity related to the treatment, the study will continue to the third treatment for these patients and with 14 more patients that will be treated with ALECSAT according to the protocol. Thus this study will include a total of 20 patients.

The patients will after the first administration of ALECSAT be hospitalized for 2 days. Five and 10 weeks later the patients will be hospitalized for 1 day and receive the second and third administration of ALECSAT. Each patient will furthermore be followed closely for 12 weeks after the third treatment. During the course of the entire study the patients will be monitored by 11 planned study visits, by the investigators at Urologisk Klinik at Fredrikssund Hospital.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Serum castration levels of testosterone, (total testosterone under 1.7nmol/l).
  2. Three consecutive rises of PSA minimum 1 week apart, resulting in at least two 50 % increases over the PSA nadir.
  3. Antiandrogen withdrawal for at least 4 weeks, or PSA progression despite secondary hormonal manipulations, or progression of osseous or soft tissue lesions.
  4. Be over the age of 18 and capable of understanding the information and giving informed consent.
  5. Expected survival time (life expectancy) of over 6 months.
  6. Adequate performance status better than 2 (WHO/ECOG Performance status score).

Exclusion Criteria:

  1. A low blood count (haemoglobin < 6.0 mmol/l).
  2. Lymphocyte counts below 0.8 x 109/l.
  3. Positive tests for anti-HIV-1/2; HBsAg, anti-HBc and Anti-HCV.
  4. Syphilis i.e. being positive in a Treponema Pallidum test.
  5. Uncontrolled serious bacterial, viral, fungal or parasitic infection.
  6. Clinically significant autoimmune disorders or conditions of immune suppression.
  7. Treatment with corticosteroids (steroid hormones) or bisphosphonates or have been in chemotherapy or radiation treatment one month prior to inclusion in the clinical trial.
  8. Blood transfusions within 48 hours prior to donation of blood for ALECSAT production.
  9. Inclusion in other clinical trials 6 weeks prior to inclusion in the trial or enrolment in other clinical trials during the ALECSAT clinical trial.
  10. Any medical condition that will render participation in the study risky or, according to the Investigator will make the assessment of side effects difficult.
  Contacts and Locations
Please refer to this study by its identifier: NCT01422850

Urological Clinic, Frederikssunds Hospital
Frederikssund, Denmark, DK-3600
Sponsors and Collaborators
CytoVac A/S
Principal Investigator: Hans-Henrik Meyhoff, MD Urologisk Klinik, Frederikssund Hospital, Frederikssundsvej 30, 3600 Frederikssund
  More Information

No publications provided

Responsible Party: CytoVac A/S Identifier: NCT01422850     History of Changes
Other Study ID Numbers: CV002
Study First Received: August 23, 2011
Last Updated: April 4, 2013
Health Authority: Denmark: Danish Medicines Agency

Keywords provided by CytoVac A/S:
hormone-refractory prostate cancer

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases processed this record on April 17, 2014