PMID- 22280536 OWN - NLM STAT- MEDLINE DCOM- 20121210 LR - 20190116 IS - 1029-2403 (Electronic) IS - 1026-8022 (Linking) VI - 53 IP - 8 DP - 2012 Aug TI - Present status and perspectives in functional analysis of p53 in chronic lymphocytic leukemia. PG - 1445-51 LID - 10.3109/10428194.2012.660630 [doi] AB - Aberrations of TP53 (mutations and/or deletions) are associated with a dismal prognosis in chronic lymphocytic leukemia (CLL). Complete loss of ATM is another mechanism of failed DNA damage response and also associated with poorer prognosis in CLL. However, p53 dysfunction may arise through alternative mechanisms unrelated to structural aberrations (deletion and/or mutation) of TP53 or ATM, and thus be undetectable by traditional DNA-directed approaches (fluorescence in situ hybridization [FISH], sequencing, karyotyping). In order to address the latter changes, and also to better understand the consequences of TP53/ATM aberrations, p53 functional assays have recently been developed. The purpose of dynamic assessment of p53 response in CLL is to carry out a comprehensive analysis of all mechanisms causing p53-deficient phenotype, including those unrelated to genomic aberrations of TP53 and ATM. The present review focuses on the current knowledge of p53 function assays in CLL, including important features such as technical issues, correlation with structural aberrations and clinical value. FAU - de Viron, Emeline AU - de Viron E AD - De Duve Institute, Universite catholique de Louvain, Brussels, Belgium. FAU - Michaux, Lucienne AU - Michaux L FAU - Put, Natalie AU - Put N FAU - Bontemps, Francoise AU - Bontemps F FAU - Van Den Neste, Eric AU - Van Den Neste E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20120301 PL - United States TA - Leuk Lymphoma JT - Leukemia & lymphoma JID - 9007422 RN - 0 (MIRN34 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (Tumor Suppressor Protein p53) SB - IM MH - Cytogenetics MH - DNA Damage MH - Gene Deletion MH - *Gene Expression Regulation, Leukemic MH - *Genes, p53 MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Leukemia, Lymphocytic, Chronic, B-Cell/*genetics MH - MicroRNAs/genetics MH - Phenotype MH - Prognosis MH - Tumor Suppressor Protein p53/*genetics EDAT- 2012/01/28 06:00 MHDA- 2012/12/12 06:00 CRDT- 2012/01/28 06:00 PHST- 2012/01/28 06:00 [entrez] PHST- 2012/01/28 06:00 [pubmed] PHST- 2012/12/12 06:00 [medline] AID - 10.3109/10428194.2012.660630 [doi] PST - ppublish SO - Leuk Lymphoma. 2012 Aug;53(8):1445-51. doi: 10.3109/10428194.2012.660630. Epub 2012 Mar 1.