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Sodium Selenite as a Cytotoxic Agent in Advanced Carcinoma (SECAR)

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: NCT01959438
Recruitment Status : Unknown
Verified October 2013 by Ola Brodin, Karolinska University Hospital.
Recruitment status was:  Recruiting
First Posted : October 10, 2013
Last Update Posted : October 10, 2013
Cancer and Allergy Foundation
Cancerföreningen i Stockholm
Region Stockholm
Information provided by (Responsible Party):
Ola Brodin, Karolinska University Hospital

Brief Summary:

In vitro studies have demonstrated that sodium selenite in sufficient concentration and during sufficient time have a high tumoricidal capacity. This is found in many human cell types as leukemia cells, mesothelioma and non-small cell lung cancer cells. A minority of cell lines seem to be resistant. The question from a clinical point of view is: Is it possible with respect to toxicity to administer sodium selenite to patients in sufficient dose and during sufficient time to get responses in patients with cancer? We have performed first part of phase-1 study and found MTD of 10.2 mg/m2 if given as 10 daily infusions during 12 days. We have recorded limited anti-tumor effect in this treatment regimen. However, in vitro data suggest that low concentration of continuous exposure for 51 h is much more effective. Now we are planning to continue the phase-I trial with modified protocol.

More specific:

  1. Phase I: Find maximal tolerable dose with continuous infusion
  2. Phase II: Use MTD and study responses, if any

Condition or disease Intervention/treatment Phase
Malignant Tumor Treatment Resistant Disorders Tumor Progression Drug: Sodium selenite (Introselen) Drug: Sodium selenite Phase 1 Phase 2

Detailed Description:
  • Patients: With advanced malignant disease, any kind, in which all standard treatment has been tried, but still progression. In sufficient good performance status (ps 0-2)to get more treatment: first selenite and immediately afterwards chemotherapy (since an additive or synergistic effect from selenite and chemotherapy has been found).
  • Treatment: We have performed the initial study with sodium selenite i.v. daily, 10 treatments during 2 weeks. The week after that response evaluation and then chemotherapy. In each patient, his or her first line chemotherapy treatment is given, since in vitro studies indicate that selenite might reverse resistance. In the modified protocol, a 2 days continuous infusion will be performed.
  • Toxicity evaluation (main criteria in phase I): Meeting a doctor once a week during selenite treatment and before each chemotherapy treatment and at End of treatment. Meeting a nurse each treatment day during selenite treatment. Blood samples for liver, kidney, blood and thyroid values. Plasma samples for selenite concentration during treatment.
  • Response evaluation (to be: main criteria in phase II and studied also in phase I): CT scan just before and after selenite treatment and after chemotherapy. From May 2011 FDG-PET-CT-scan just before and after selenite treatment. Cytokeratin and cytokeratin fragments evaluation.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 32 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Sodium Selenite as a Cytotoxic Agent in Advanced Carcinoma. A Phase I and Phase II Study.
Study Start Date : February 2007
Estimated Primary Completion Date : October 2016
Estimated Study Completion Date : June 2018

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Selenite treatment
In the first part of the study, cohorts of 3 patients receive sodium selenite iv, starting with a dose of 0.5 mg/m2. If no serious adverse event the next cohort is treated according to a dose escalation schedule and this part has been completed. In the modified protocol, a continuous infusion over 2 days will be administered.
Drug: Sodium selenite (Introselen)
Intravenous infusion daily for each week day during 2 weeks (10 infusions). After that chemotherapy during 6 weeks. Chemotherapy for each patients is the first line treatment, so chemotherapy differs among patients, with respect to which treatment a patient got as first line.
Other Name: Introselen (Pharma Nord)

Drug: Sodium selenite
Intravenous treatment as described above. Cohorts of 3 patient are given a fixed dose for daily treatment (started with 0.5 mg/m2) and if no grade 3 or 4 toxicity, a new cohort is started on a higher dose. The dose for next cohort is 50% higher than for the former cohort. If grade 3 or 4 toxicity is found in 1 patient, 3 more patients are included on the same dose and if one more patient has serious toxicity it is considered to high a dose and a dose in between the toxic dose and the one before is tested. Thus if 2 patients in 3-6 tested patients has serious toxicity by a certain dose, this dose is to high and the highest dose is considered the earlier tested dose.
Other Name: Introselen (Pharma Nord)

Primary Outcome Measures :
  1. Maximal tolerable dose (phase I, ongoing) [ Time Frame: within three year ]
    To find which kind and grade of toxicities that are dose-limiting

Secondary Outcome Measures :
  1. Responses [ Time Frame: Two years within the phase I study ]
    Responses are measured essentially by CT scan or PET-CT-scan. During the Phase II study, responses are the primary criteria but in the phase I study toxicity is the main criteria.

Information from the National Library of Medicine

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

Inclusion Criteria:

  • Advanced malignant tumor disease
  • All standard treatments should have been tested, but the disease still progressing.
  • In sufficient good performance status to get more treatment
  • Informed consent

Exclusion Criteria:

  • More than 1 active tumour disease
  • Impaired capacity to cooperate
  • Serious other disease such as heart or kidney disease that might give extra risk for complications and difficulties to interpret effect of the selenite treatment
  • The tumour not possible to evaluate

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): NCT01959438

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Contact: Ola Brodin, MD, PhD +46 8 6164344

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Onkologkliniken, (Dept of Oncology) Södersjukhuset Recruiting
Stockholm, Sweden, 11883
Contact: Ola Brodin, MD, PhD    +46 8 6164344   
Sub-Investigator: Clara Lenneby-Helleday, MD         
Sponsors and Collaborators
Karolinska University Hospital
Cancer and Allergy Foundation
Cancerföreningen i Stockholm
Region Stockholm
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Principal Investigator: Ola Brodin, MD, PhD Karolinska University Hospital
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Responsible Party: Ola Brodin, MD, PhD, Ass Prof, Senior consultant, Karolinska University Hospital Identifier: NCT01959438    
Other Study ID Numbers: Eu-nr 2006-004076-13
First Posted: October 10, 2013    Key Record Dates
Last Update Posted: October 10, 2013
Last Verified: October 2013
Keywords provided by Ola Brodin, Karolinska University Hospital:
Phase I study for safety
Later Phase II study for responses
Additional relevant MeSH terms:
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Selenious Acid
Sodium Selenite
Trace Elements
Physiological Effects of Drugs