PMID- 9751260 OWN - NLM STAT- MEDLINE DCOM- 19981001 LR - 20190720 IS - 0304-3835 (Print) IS - 0304-3835 (Linking) VI - 130 IP - 1-2 DP - 1998 Aug 14 TI - Interstitial and large chromosome 1p deletion occurs in localized and disseminated neuroblastomas and predicts an unfavourable outcome. PG - 83-92 AB - We studied chromosome 1p loss of heterozygosity (1p-LOH) in 53 neuroblastomas (NBs) using 15 (CA)n repeat loci, which covered a region of 90 cM. We also assessed chromosome 1p36 deletion by fluorescence in situ hybridization (FISH) on interphase nuclei. 1p-LOH was found in 19 (36%, 95% confidence interval (CI) 23-50%) NBs. We detected interstitial and large deletion in both localized and disseminated tumours and in one tumour of a patient at stage 4S. Allelic loss was frequently observed in 1p36 and 1p32 regions. In patients older than 1 year of age (53 versus 13%, P < 0.002) we detected significant chromosome 1p deletion and it was associated with MYCN amplification (P = 0.001). Overall survival (OS) analysis showed that 1p-LOH is predictive of a poor outcome (odds ratio 16.5, 95% CI 5.4-50.9%); therefore, 1p-LOH should be regarded as an additional tumour progression marker in neuroblastoma. FAU - Iolascon, A AU - Iolascon A AD - Department of Biomedicine of Evolutive Age, University of Bari, Genova, Italy. FAU - Lo Cunsolo, C AU - Lo Cunsolo C FAU - Giordani, L AU - Giordani L FAU - Cusano, R AU - Cusano R FAU - Mazzocco, K AU - Mazzocco K FAU - Boumgartner, M AU - Boumgartner M FAU - Ghisellini, P AU - Ghisellini P FAU - Faienza, M F AU - Faienza MF FAU - Boni, L AU - Boni L FAU - De Bernardi, B AU - De Bernardi B FAU - Conte, M AU - Conte M FAU - Romeo, G AU - Romeo G FAU - Tonini, G P AU - Tonini GP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Cancer Lett JT - Cancer letters JID - 7600053 SB - IM MH - Adolescent MH - Child MH - Child, Preschool MH - Chromosomes, Human, Pair 1/*genetics MH - Gene Amplification MH - *Gene Deletion MH - Genes, myc/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - *Loss of Heterozygosity MH - Neuroblastoma/*genetics/pathology MH - Prognosis MH - Survival Analysis EDAT- 1998/09/29 00:00 MHDA- 1998/09/29 00:01 CRDT- 1998/09/29 00:00 PHST- 1998/09/29 00:00 [pubmed] PHST- 1998/09/29 00:01 [medline] PHST- 1998/09/29 00:00 [entrez] AID - S0304-3835(98)00122-0 [pii] AID - 10.1016/s0304-3835(98)00122-0 [doi] PST - ppublish SO - Cancer Lett. 1998 Aug 14;130(1-2):83-92. doi: 10.1016/s0304-3835(98)00122-0.