PMID- 15998971 OWN - NLM STAT- MEDLINE DCOM- 20050809 LR - 20071115 IS - 1543-1894 (Print) IS - 1543-1894 (Linking) VI - 115 DP - 2005 TI - Sequential fluorescence in situ hybridization analysis for trisomy 12 in B-cell chronic lymphocytic leukemia. PG - 231-40 AB - Tumor-specific chromosomal abnormalities are attracting a large interest owing to the diagnostic, prognostic, and therapeutic importance. The development of molecular techniques, e.g., fluorescence in situ hybridization (FISH), have improved the detection of specific chromosomal abnormalities in chronic lymphocytic leukemic (CLL). By using FISH, the problem with tumor cells with low mitotic rate is avoided since this method readily detects clonal aberrations also in nondividing, interphase cells. Three different types of probes are used: (1) centromeric probes for numerical chromosome abnormalities, (2) whole chromosome paints, and (3) locus-specific probes. The DNA probes are labeled with fluorochromes and the signals yielded are strong enough to enable analysis of interphase cells. These DNA probes may be directed towards any defined chromosomal region and this chapter will in detail describe the FISH method as a detector of trisomy 12 in CLL. FAU - Hjalmar, Viktoria AU - Hjalmar V AD - Karolinska Hospital, Stockholm, Sweden. LA - eng PT - Journal Article PL - United States TA - Methods Mol Med JT - Methods in molecular medicine JID - 101123138 RN - 0 (DNA Probes) SB - IM MH - *Chromosome Aberrations MH - Chromosome Banding MH - Chromosomes, Human, Pair 12/*genetics MH - DNA Probes MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Interphase/genetics MH - Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis/*genetics MH - *Trisomy EDAT- 2005/07/07 09:00 MHDA- 2005/08/10 09:00 CRDT- 2005/07/07 09:00 PHST- 2005/07/07 09:00 [pubmed] PHST- 2005/08/10 09:00 [medline] PHST- 2005/07/07 09:00 [entrez] AID - 1-59259-936-2:231 [pii] AID - 10.1385/1-59259-936-2:231 [doi] PST - ppublish SO - Methods Mol Med. 2005;115:231-40. doi: 10.1385/1-59259-936-2:231.