PMID- 18406869 OWN - NLM STAT- MEDLINE DCOM- 20080603 LR - 20220318 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 182 IP - 2 DP - 2008 Apr 15 TI - Screening for submicroscopic chromosomal rearrangements in Wilms tumor using whole-genome microarrays. PG - 84-94 LID - 10.1016/j.cancergencyto.2007.12.015 [doi] AB - Wilms tumor is the fourth most common malignancy of childhood; its pathogenesis, however, remains largely unknown. With advancements in cytogenetic techniques, such as array comparative genomic hybridization (aCGH), there is new hope for uncovering small chromosomal microdeletions or microduplications that may contribute to our understanding of Wilms tumor. We performed aCGH on 10 samples of Wilms tumor with normal conventional cytogenetic and chromosomal CGH findings. Array CGH revealed abnormalities in 3 of the 10 samples, including microdeletions (2q37.1, 7q31 approximately q32, and 11q22.3), microduplication (18q21.1), and gains and losses of larger chromosomal areas (1q and 7q gain and loss of 7p, 11q, 14q, and 16q). Fluorescence in situ hybridization (FISH) analysis confirmed the abnormalities and revealed the majority of them existed only in a proportion cells (> or =30% of cells). We also performed aCGH on three samples of Wilms tumor with previously identified translocations between chromosomes 1 and 16, to determine the breakpoints. The breakpoints were seen in the pericentromeric regions of both chromosomes. Array CGH is useful for identifying submicroscopic changes in Wilms tumor and is more sensitive for detecting clonal abnormalities than conventional methods. FAU - Rassekh, Shahrad Rod AU - Rassekh SR AD - Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, British Columbia Children's Hospital, 4480 Oak Street, Vancouver, BC V6R 3M9, Canada. rrassekh@cw.bc.ca FAU - Chan, Suzanne AU - Chan S FAU - Harvard, Chansonette AU - Harvard C FAU - Dix, David AU - Dix D FAU - Qiao, Ying AU - Qiao Y FAU - Rajcan-Separovic, Evica AU - Rajcan-Separovic E LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM MH - Child MH - Child, Preschool MH - *Chromosome Aberrations MH - *Chromosome Mapping MH - *Genome, Human MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - Karyotyping MH - Kidney Neoplasms/*genetics/pathology MH - Nucleic Acid Hybridization MH - *Oligonucleotide Array Sequence Analysis MH - Wilms Tumor/*genetics/pathology EDAT- 2008/04/15 09:00 MHDA- 2008/06/05 09:00 CRDT- 2008/04/15 09:00 PHST- 2007/08/31 00:00 [received] PHST- 2007/12/19 00:00 [revised] PHST- 2007/12/28 00:00 [accepted] PHST- 2008/04/15 09:00 [pubmed] PHST- 2008/06/05 09:00 [medline] PHST- 2008/04/15 09:00 [entrez] AID - S0165-4608(08)00025-3 [pii] AID - 10.1016/j.cancergencyto.2007.12.015 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2008 Apr 15;182(2):84-94. doi: 10.1016/j.cancergencyto.2007.12.015.