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  • Title: Quantitative PCR detection of NPM/ALK fusion gene and CD30 gene expression in patients with anaplastic large cell lymphoma--residual disease monitoring and a correlation with the disease status.
    Author: Kalinova M, Krskova L, Brizova H, Kabickova E, Kepak T, Kodet R.
    Journal: Leuk Res; 2008 Jan; 32(1):25-32. PubMed ID: 17320171.
    Abstract:
    Anaplastic large cell lymphoma (ALCL) represents a heterogeneous group of malignant lymphoproliferative diseases with a consistent expression of the cytokine receptor CD30. ALCL is frequently associated with a NPM/ALK fusion gene which is found in up to 75% of pediatric ALCLs. Real-time quantitative RT-PCR (RQ-RT-PCR) of NPM/ALK and CD30 gene expression was employed to analyze minimal residual disease (MRD) in 10 patients with NPM/ALK positive ALCL in 79 follow-up bone marrow (BM) and/or peripheral blood (PB) samples. In all BM samples from relapses and/or closely before a relapse, BM samples revealed NPM/ALK and CD30 positivity in at least one of the iliac BM trephines. Five out of nine relapses were preceded or were accompanied by minimally half log increased NPM/ALK levels in the BM. We found that RQ-RT-PCR of the CD30 expression is not suitable for MRD detection--only two relapses were accompanied by an increase of the CD30 level above a level which was detected in BM/PB samples from healthy individuals. RQ-RT-PCR of NPM/ALK expression is a promising and rapid approach for monitoring MRD.
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