PMID- 27341486 OWN - NLM STAT- MEDLINE DCOM- 20170525 LR - 20180831 IS - 1096-8652 (Electronic) IS - 0361-8609 (Linking) VI - 91 IP - 10 DP - 2016 Oct TI - FISHing in the dark: How the combination of FISH and conventional karyotyping improves the diagnostic yield in CpG-stimulated chronic lymphocytic leukemia. PG - 978-83 LID - 10.1002/ajh.24452 [doi] AB - Despite significant advances in molecular genetic approaches, fluorescence in situ hybridization (FISH) remains the gold standard for the diagnostic evaluation of genomic aberrations in patients with chronic lymphocytic leukemia (CLL). Efforts to improve the diagnostic utility of molecular cytogenetic testing have led to the expansion of the traditional 4-probe CLL FISH panel. Not only do these efforts increase the cost of testing, they remain hindered by the inherent limitations of FISH studies - namely the inability to evaluate genomic changes outside of the targeted loci. While array-based profiling and next generation sequencing (NGS) have critically expanded our understanding of the molecular pathogenesis of CLL, these methodologies are not routinely used by diagnostic laboratories to evaluate copy number changes or the mutational profile of this disease. Mitogenic stimulation of CLL specimens with CpG-oligonucleotide (CpG-ODN) has been identified as a reliable and reproducible means of obtaining a karyotype, facilitating a low-resolution genome-wide analysis. Across a cohort of 1255 CpG-ODN-stimulated CLL specimens, we describe the clinical utility associated with the combinatorial use of FISH and karyotyping. Our testing algorithm achieves a higher diagnostic yield ( approximately 10%) through the detection of complex karyotypes, well-characterized chromosomal aberrations not covered by the traditional CLL FISH panel and through the detection of concurrent secondary malignancies. Moreover, the single cell nature of this approach permits the evaluation of emerging new clinical concepts including clonal dynamics and clonal evolution. This approach can be broadly applied by diagnostic laboratories to improve the utility of traditional and molecular cytogenetic studies of CLL. Am. J. Hematol. 91:978-983, 2016. (c) 2016 Wiley Periodicals, Inc. CI - (c) 2016 Wiley Periodicals, Inc. FAU - Dubuc, Adrian M AU - Dubuc AM AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. AD - Harvard Medical School, Boston, Massachusetts. FAU - Davids, Matthew S AU - Davids MS AD - Harvard Medical School, Boston, Massachusetts. AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. FAU - Pulluqi, Mirela AU - Pulluqi M AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Pulluqi, Olja AU - Pulluqi O AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Hoang, Kevin AU - Hoang K AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. FAU - Hernandez-Sanchez, Jesus M AU - Hernandez-Sanchez JM AD - IBSAL, IBMCC, Centro de Investigacion del Cancer, Universidad de Salamanca-CSIC, Salamanca, 37007, Spain. FAU - Schlich, Cathy AU - Schlich C AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Hernandez-Rivas, Jesus M AU - Hernandez-Rivas JM AD - IBSAL, IBMCC, Centro de Investigacion del Cancer, Universidad de Salamanca-CSIC, Salamanca, 37007, Spain. AD - Department of Hematology, Hospital Universitario de Salamanca, Salamanca, 37007, Spain. FAU - Brown, Jennifer R AU - Brown JR AD - Harvard Medical School, Boston, Massachusetts. AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. FAU - Dal Cin, Paola AU - Dal Cin P AD - Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts. pdalcin@partners.org. AD - Harvard Medical School, Boston, Massachusetts. pdalcin@partners.org. LA - eng PT - Journal Article DEP - 20160722 PL - United States TA - Am J Hematol JT - American journal of hematology JID - 7610369 RN - 0 (CPG-oligonucleotide) RN - 0 (Mitogens) RN - 0 (Oligodeoxyribonucleotides) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Chromosome Aberrations MH - Clone Cells/pathology MH - Cytogenetics MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Karyotyping/*methods MH - Leukemia, Lymphocytic, Chronic, B-Cell/*diagnosis/etiology/genetics MH - Middle Aged MH - Mitogens/pharmacology MH - Neoplasms, Second Primary/diagnosis MH - Oligodeoxyribonucleotides/pharmacology MH - Single-Cell Analysis MH - Young Adult EDAT- 2016/06/25 06:00 MHDA- 2017/05/26 06:00 CRDT- 2016/06/25 06:00 PHST- 2015/12/04 00:00 [received] PHST- 2016/05/26 00:00 [revised] PHST- 2016/06/17 00:00 [accepted] PHST- 2016/06/25 06:00 [entrez] PHST- 2016/06/25 06:00 [pubmed] PHST- 2017/05/26 06:00 [medline] AID - 10.1002/ajh.24452 [doi] PST - ppublish SO - Am J Hematol. 2016 Oct;91(10):978-83. doi: 10.1002/ajh.24452. Epub 2016 Jul 22.