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Erschienen in: Journal of Cancer Research and Clinical Oncology 4/2020

01.04.2020 | Original Article – Clinical Oncology

Unique molecular features and clinical outcomes in young patients with non-small cell lung cancer harboring ALK fusion genes

verfasst von: Panwen Tian, Yujie Liu, Hao Zeng, Yuan Tang, Analyn Lizaso, Junyi Ye, Lin Shao, Yalun Li

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 4/2020

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Abstract

Purpose

This study aimed to determine the molecular features and clinical outcomes of young patients with non-small cell lung cancer (NSCLC) harboring ALK fusion genes.

Methods

We interrogated the genomic profile of 1652 patients with lung cancer who underwent targeted next-generation sequencing to screen for candidate oncogenic drivers using histological specimens acquired from January 2016 to December 2018.

Results

ALK fusions were identified in 101 NSCLC patients, and 52 of them were diagnosed before the age of 50 years (52/367, 14.2%). Of the 52 patients with early-onset disease, 22 (42.3%) were male and 43 (82.7%) never smoked; the median patient age was 44 years (range 28–50 years). The most frequently occurring ALK fusion partner was EML4, which was identified in 80.8% (42/52) of young patients. Compared to the older patients, patients with early-onset disease were more likely to harbor EML4-ALK variant 1 (38.5% vs. 14.3%; P = 0.007). We also identified rare ALK fusions, including CHRNA7-ALK, TACR1-ALK, HIP1-ALK, DYSF-ALK and ITGAV-ALK, in patients with early-onset disease, and patients with these fusions responded well to crizotinib treatment. A statistically significant difference was observed in progression-free survival (PFS) between the young patients and older patients who received crizotinib as the first-line therapy (17.5 months vs 9.0 months, P = 0.048). However, the median PFS of young patients harboring concurrent TP53 mutations was only 6.2 months.

Conclusion

Unique genetic characteristics were found in ALK-rearranged NSCLC patients with early disease onset, and these patients responded better to crizotinib and had longer PFS compared to patients with later disease onset. However, patients with concomitant TP53 mutations may not have a significant response to treatment.
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Literatur
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Metadaten
Titel
Unique molecular features and clinical outcomes in young patients with non-small cell lung cancer harboring ALK fusion genes
verfasst von
Panwen Tian
Yujie Liu
Hao Zeng
Yuan Tang
Analyn Lizaso
Junyi Ye
Lin Shao
Yalun Li
Publikationsdatum
01.04.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Cancer Research and Clinical Oncology / Ausgabe 4/2020
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-019-03116-6

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