title: NRG1 fusion in a French cohort of invasive mucinous lung adenocarcinoma.
abstract: Invasive mucinous lung adenocarcinoma (IMA) is a rare subtype of lung adenocarcinoma with no effective treatment option in advanced disease. KRAS mutations occur in 28-87% of the cases. NRG1 fusions were recently discovered in KRAS-negative IMA cases and otherwise negative for known driver oncogenes and could represent an attractive therapeutic target. Published data suggest that NRG1 fusions occur essentially in nonsmoking Asian women. From an IMA cohort of 25 French patients of known ethnicity, driver oncogenes EGFR, KRAS, BRAF, ERBB2 mutations, and ALK and ROS1 rearrangements presence were analyzed. In the IMA samples remaining negative for these driver oncogenes, an NRG1 rearrangement detection was performed by FISH. A driver oncogene was identified in 14/25 IMA, namely 12 KRAS mutations (48%), one ROS1 rearrangement (4%), and one ALK rearrangement (4%). The detection of NRG1 rearrangement by FISH was conducted in the 11 pan-negative IMA. One sample was NRG1FISH-positive and 100% of the tumor nuclei analyzed were positive. This NRG1-positive patient was a 61-year-old nonsmoking woman of Vietnamese ethnicity and was the sole patient of Asian ethnicity of the cohort. She died 6 months after the diagnosis with a pulmonary multifocal disease. NRG1FISH detection should be considered in patients with IMA pan-negative for known driver oncogenes. These results might suggest that NRG1 fusion is more frequent in IMA from Asian patient. Larger studies are needed.
authors: Sorbonne Universités, UPMC University Paris 06, GRC n°04, Theranoscan, F-75252, Paris, France.
authors: Michaël
authors: 0000-0003-1495-0966
authors: M
authors: Duruisseaux
authors: Plateforme de Génétique Moléculaire des Tumeurs, Pôle de Biologie et Pathologie CHU Grenoble et INSERM U 823-Institut A Bonniot-Université J Fourier, Grenoble, France.
authors: Anne
authors: A
authors: McLeer-Florin
authors: Sorbonne Universités, UPMC University Paris 06, GRC n°04, Theranoscan, F-75252, Paris, France.|AP-HP, Hôpital Tenon, Service d'Anatomie pathologique, F-75970, Paris, France.
authors: Martine
authors: M
authors: Antoine
authors: Plateforme de Génétique Moléculaire des Tumeurs, Pôle de Biologie et Pathologie CHU Grenoble et INSERM U 823-Institut A Bonniot-Université J Fourier, Grenoble, France.
authors: Sanaz
authors: S
authors: Alavizadeh
authors: AP-HP, Hôpital Tenon, Plateforme de Génomique des Tumeurs Solides, F-75970, Paris, France.
authors: Virginie
authors: V
authors: Poulot
authors: AP-HP, Hôpital Tenon, Plateforme de Génomique des Tumeurs Solides, F-75970, Paris, France.
authors: Roger
authors: R
authors: Lacave
authors: Sorbonne Universités, UPMC University Paris 06, GRC n°04, Theranoscan, F-75252, Paris, France.|AP-HP, Hôpital Tenon, Service de Pneumologie, F-75970, Paris, France.
authors: Nathalie
authors: N
authors: Rabbe
authors: Sorbonne Universités, UPMC University Paris 06, GRC n°04, Theranoscan, F-75252, Paris, France.|AP-HP, Hôpital Tenon, Service de Pneumologie, F-75970, Paris, France.
authors: Jacques
authors: J
authors: Cadranel
authors: Sorbonne Universités, UPMC University Paris 06, GRC n°04, Theranoscan, F-75252, Paris, France.|AP-HP, Hôpital Tenon, Service de Pneumologie, F-75970, Paris, France.
authors: Marie
authors: M
authors: Wislez
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics* / Q000473:pathology*; D000077192:Adenocarcinoma of Lung; D002288:Adenocarcinoma, Mucinous / Q000235:genetics* / Q000473:pathology*; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D017404:In Situ Hybridization, Fluorescence; D008175:Lung Neoplasms / Q000235:genetics* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009154:Mutation; D009361:Neoplasm Invasiveness; D020890:Neuregulin-1 / Q000235:genetics* / Q000378:metabolism; D015514:Oncogene Proteins, Fusion / Q000235:genetics* / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; C094131:NRG1 protein, human; D020890:Neuregulin-1; D015514:Oncogene Proteins, Fusion
keywords: 
  FISH
  ; NRG1; invasive mucinous adenocarcinoma; lung adenocarcinoma; molecular oncology