FISH analysis of circulating CD34+ cells as a new tool for genetic monitoring in MDS: verification of the method and application to 27 MDS patients.
In myelodysplastic syndromes (MDS) chromosomal anomalies can be identified in 50-80% of patients. They have a diagnostic and prognostic impact and are increasingly considered for therapeutic decisions. Cytomorphology and cytogenetic analyses of bone marrow (bm) cells define the goldstandard to diagnose MDS patients and to document treatment response. We present a novel method using peripheral blood (pb) for frequent cytogenetic monitoring: after immunomagnetic cell separation circulating CD34+ cells were analysed by fluorescence in situ hybridization (FISH). We compared FISH analyses of enriched and non-enriched pb and bm cells with conventional chromosome banding analyses of bm metaphases: analysing circulating CD34+ cells by FISH is a sensitive, reliable method to measure the abnormal cell clones in pb. This method is practicable, non-invasive, representative for the clonal situation in the bm, and has a predictive value. Its feasibility was proven in a cohort of 27 MDS patients.
Department of Hematology and Oncology, Georg-August University, Robert-Koch-Str 40, 37075 Goettingen, Germany.
Friederike
F
Braulke
Julie
J
Schanz
Klaus
K
Jung
Katayoon
K
Shirneshan
Kristina
K
Schulte
Claudia
C
Schuetze
Rainer
R
Steffens
Lorenz
L
Trümper
Detlef
D
Haase
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018952:Antigens, CD34 / Q000032:analysis*; D001374:Azacitidine / Q000627:therapeutic use; D001854:Bone Marrow Cells / Q000473:pathology*; D002869:Chromosome Aberrations; D002897:Chromosomes, Human, Pair 7; D005260:Female; D006801:Humans; D017404:In Situ Hybridization, Fluorescence / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009006:Monosomy; D009190:Myelodysplastic Syndromes / Q000175:diagnosis / Q000188:drug therapy / Q000235:genetics*
D018952:Antigens, CD34; D001374:Azacitidine