Indication

Neuregulin 1 gene fusion positive non-small cell lung cancer

Neuregulin 1 gene fusion positive non-small cell lung cancer is a rare molecularly defined subset of primary thoracic epithelial malignancy, characterized by genomic rearrangements involving the *NRG1* gene. Read more about Neuregulin 1 gene fusion positive non-small cell lung cancer

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About Neuregulin 1 gene fusion positive non-small cell lung cancer.

Neuregulin 1 gene fusion positive non-small cell lung cancer is a rare molecularly defined subset of primary thoracic epithelial malignancy, characterized by genomic rearrangements involving the *NRG1* gene.

Primarily affecting adults and strongly enriched in non-smoking individuals with invasive mucinous lung adenocarcinomas, this clinical entity arises within the respiratory system.

Pathophysiologically, the structural rearrangement preserves the epidermal growth factor-like domain of neuregulin-1, producing an aberrant chimeric ligand that constitutively binds and dimerizes ErbB3 (HER3) with ErbB2 (HER2).

This ligand-dependent receptor activation drives persistent downstream oncogenic signaling via the PI3K/AKT and MAPK pathways, promoting accelerated tumor proliferation, cell survival, and therapeutic resistance to conventional treatments.

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