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Clinical Trial Summary

Patients with chronic lymphocytic leukemia (CLL)have had very poor humoral responses to pneumococcal polysaccharide vaccine (PPV). The vaccine in which pneumococcal polysaccharide antigens are conjugated to protein (PCV) have been immunogenic in CLL patients in our previous studies.

The purpose of this study is to evaluate the duration of these vaccine-induced antibodies and the function of memory cells by giving a one dose of PPV-vaccine after several years of PCV-vaccination.


Clinical Trial Description

n/a


Study Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention


Related Conditions & MeSH terms


NCT number NCT00919321
Study type Interventional
Source Tampere University Hospital
Contact
Status Completed
Phase Phase 4
Start date June 2009
Completion date December 2013

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