Neuroblastoma Patients' Outcome and Chromosomal Instability.

Autor: Ognibene M; U.O.C. Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., De Marco P; U.O.C. Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., Amoroso L; U.O.C. Oncologia Pediatrica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., Fragola M; Epidemiologia e Biostatistica, Direzione Scientifica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., Zara F; U.O.C. Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., Parodi S; Epidemiologia e Biostatistica, Direzione Scientifica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy., Pezzolo A; IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy.
Jazyk: angličtina
Zdroj: International journal of molecular sciences [Int J Mol Sci] 2023 Oct 24; Vol. 24 (21). Date of Electronic Publication: 2023 Oct 24.
DOI: 10.3390/ijms242115514
Abstrakt: Chromosomal instability (CIN) induces a high rate of losses or gains of whole chromosomes or parts of chromosomes. It is a hallmark of most human cancers and one of the causes of aneuploidy and intra-tumor heterogeneity. The present study aimed to evaluate the potential prognostic role of CIN in NB patients at diagnosis. We performed array comparative genomic hybridization analyses on 451 primary NB patients at the onset of the disease. To assess global chromosomal instability with high precision, we focused on the total number of DNA breakpoints of gains or losses of chromosome arms. For each tumor, an array-CGH-based breakpoint instability index (BPI) was assigned which defined the total number of chromosomal breakpoints per genome. This approach allowed us to quantify CIN related to whole genome disruption in all NB cases analyzed. We found differences in chromosomal breakages among the NB clinical risk groups. High BPI values are negatively associated with survival of NB patients. This association remains significant when correcting for stage, age, and MYCN status in the Cox model. Stratified analysis confirms the prognostic effect of BPI index in low-risk NB patients with non-amplified MYCN and with segmental chromosome aberrations.
Databáze: MEDLINE
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