Silveira, Sara MartoreliVillacis, Rolando Andre RiosMarchi, Fabio Albuquerquede Barros Filho, Mateus CamargoLinde, Sandra Aparecida Drigo [UNESP]Neto, Cristovam ScapulatempoLopes, Ademarda Cunha, Isabela WerneckRogatto, Silvia Regina [UNESP]2014-05-272014-05-272013-06-25PLoS ONE, v. 8, n. 6, 2013.1932-6203http://hdl.handle.net/11449/75707Undifferentiated high-grade pleomorphic sarcomas (UPSs) display aggressive clinical behavior and frequently develop local recurrence and distant metastasis. Because these sarcomas often share similar morphological patterns with other tumors, particularly leiomyosarcomas (LMSs), classification by exclusion is frequently used. In this study, array-based comparative genomic hybridization (array CGH) was used to analyze 20 UPS and 17 LMS samples from untreated patients. The LMS samples presented a lower frequency of genomic alterations compared with the UPS samples. The most frequently altered UPS regions involved gains at 20q13.33 and 7q22.1 and losses at 3p26.3. Gains at 8q24.3 and 19q13.12 and losses at 9p21.3 were frequently detected in the LMS samples. Of these regions, gains at 1q21.3, 11q12.2-q12.3, 16p11.2, and 19q13.12 were significantly associated with reduced overall survival times in LMS patients. A multivariate analysis revealed that gains at 1q21.3 were an independent prognostic marker of shorter survival times in LMS patients (HR = 13.76; P = 0.019). Although the copy number profiles of the UPS and LMS samples could not be distinguished using unsupervised hierarchical clustering analysis, one of the three clusters presented cases associated with poor prognostic outcome (P = 0.022). A relative copy number analysis for the ARNT, SLC27A3, and PBXIP1 genes was performed using quantitative real-time PCR in 11 LMS and 16 UPS samples. Gains at 1q21-q22 were observed in both tumor types, particularly in the UPS samples. These findings provide strong evidence for the existence of a genomic signature to predict poor outcome in a subset of UPS and LMS patients. © 2013 Silveira et al.engantineoplastic agentadjuvant therapyadolescentadultagedARNT genecancer prognosiscancer radiotherapychildchromosome 11qchromosome 16pchromosome 19qchromosome 1qchromosome 20qchromosome 3pchromosome 7qchromosome 8qchromosome 9pchromosome lossclinical articlecomparative genomic hybridizationfemalegenegene dosagegene mutationhumanhuman tissueleiomyosarcomamalemuscle resectionnucleotide sequenceoverall survivalPBXIP1 genepleomorphic sarcomapredictionpreschool childquantitative analysisreal time polymerase chain reactionsarcomaschool childSLC27A3 geneArtigo10.1371/journal.pone.0067643WOS:000321223000112Acesso aberto2-s2.0-848793970162-s2.0-84879397016.pdf2259986546265579