Deletions of 11q22.3-q25 are associated with atypical lung carcinoids and poor clinical outcome

Swarts, Dorian R A; Claessen, Sandra M H; Jonkers, Yvonne M H; van Suylen, Robert-Jan; Dingemans, Anne-Marie C; de Herder, Wouter W; de Krijger, Ronald R; Smit, Egbert F; Thunnissen, Frederik B J M; Seldenrijk, Cornelis A; Vink, Aryan; Perren, Aurel; Ramaekers, Frans C S; Speel, Ernst-Jan M (2011). Deletions of 11q22.3-q25 are associated with atypical lung carcinoids and poor clinical outcome. American journal of pathology, 179(3), pp. 1129-37. New York, N.Y.: Elsevier 10.1016/j.ajpath.2011.05.028

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Carcinoids are slow-growing neuroendocrine tumors that, in the lung, can be subclassified as typical (TC) or atypical (AC). To identify genetic alterations that improve the prediction of prognosis, we investigated 34 carcinoid tumors of the lung (18 TCs, 15 ACs, and 1 unclassified) by using array comparative genomic hybridization (array CGH) on 3700 genomic bacterial artificial chromosome arrays (resolution ?1 Mb). When comparing ACs with TCs, the data revealed: i) a significant difference in the average number of chromosome arms altered (9.6 versus 4.2, respectively; P = 0.036), with one subgroup of five ACs having more than 15 chromosome arms altered; ii) chromosomal changes in 30% of ACs or more with additions at 9q (?1 Mb) and losses at 1p, 2q, 10q, and 11q; and iii) 11q deletions in 8 of 15 ACs versus 1 of 18 TCs (P = 0.004), which was confirmed via fluorescence in situ hybridization. The four critical regions of interest in 45% ACs or more comprised 11q14.1, 11q22.1-q22.3, 11q22.3-q23.2, and 11q24.2-q25, all telomeric of MEN1 at 11q13. Results were correlated with patient clinical data and long-term follow-up. Thus, there is a strong association of 11q22.3-q25 loss with poorer prognosis, alone or in combination with absence of 9q34.11 alterations (P = 0.0022 and P = 0.00026, respectively).

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Service Sector > Institute of Pathology
UniBE Contributor:	Perren, Aurel
ISSN:	0002-9440
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:18
Last Modified:	05 Dec 2022 14:04
Publisher DOI:	10.1016/j.ajpath.2011.05.028
PubMed ID:	21763262
Web of Science ID:	000298307300008
URI:	https://boris.unibe.ch/id/eprint/5538 (FactScience: 210291)