PMID- 9283589 OWN - NLM STAT- MEDLINE DCOM- 19970917 LR - 20190816 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 97 IP - 2 DP - 1997 Sep TI - Monoallelic p53 deletion in chronic lymphocytic leukemia detected by interphase cytogenetics. PG - 97-100 AB - Chromosomal aberrations can be detected in 50% of patients with chronic lymphocytic leukemia (CLL). A role for tumor suppressor genes in the genesis of lymphoid tumors has been reported. In B-CLL, p53 gene mutations were found in 10-15% of the patients. We used fluorescence in situ hybridization (FISH) to detect p53 deletion in B-CLL. We also correlated the cytogenetic findings with the clinical course. In situ hybridization to interphase nuclei showed monallelic p53 deletion in 6 of 23 patients (26%). The percentage of cells with one p53 signal ranged from 12 to 100. A statistically significant correlation between p53 deletion and progression of CLL was demonstrated. We conclude that FISH is a sensitive and reliable method to detect deletion of specific genes (i.e., p53) in CLL. The finding of p53 deletion is associated with disease progression. FAU - Amiel, A AU - Amiel A AD - Department of Medicine, Meir Hospital, Kfar Saba, Israel. FAU - Arbov, L AU - Arbov L FAU - Manor, Y AU - Manor Y FAU - Fejgin, M AU - Fejgin M FAU - Elis, A AU - Elis A FAU - Gaber, E AU - Gaber E FAU - Lishner, M AU - Lishner M LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM MH - Aged MH - Alleles MH - Cytogenetics/methods MH - Female MH - *Gene Deletion MH - *Genes, p53 MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Interphase MH - Leukemia, Lymphocytic, Chronic, B-Cell/*genetics/pathology MH - Leukocytes, Mononuclear/ultrastructure MH - Male MH - Middle Aged EDAT- 1997/09/01 00:00 MHDA- 1997/09/01 00:01 CRDT- 1997/09/01 00:00 PHST- 1997/09/01 00:00 [pubmed] PHST- 1997/09/01 00:01 [medline] PHST- 1997/09/01 00:00 [entrez] AID - S016546089600341X [pii] AID - 10.1016/s0165-4608(96)00341-x [doi] PST - ppublish SO - Cancer Genet Cytogenet. 1997 Sep;97(2):97-100. doi: 10.1016/s0165-4608(96)00341-x.