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Title: Parkinson disease (PARK ) genes are somatically mutated in cutaneous melanoma
Authors: Qutob, Nouar
Keywords: Parkinson's disease - Molecular aspects;Cancer - Molecular diagnosis
Issue Date: 2016
Abstract: Objective: To assess whether Parkinson disease (PD) genes are somatically mutated in cutaneous melanoma (CM) tissue, because CM occurs in patients with PD at higher rates than in the general population and PD is more common than expected in CM cohorts. Methods: We cross-referenced somatic mutations in metastatic CM detected by whole-exome sequencing with the 15 known PD (PARK) genes. We computed the empirical distribution of the sum of mutations in each gene (Smut) and of the number of tissue samples in which a given gene was mutated at least once (SSampl) for each of the analyzable genes, determined the 90th and 95th percentiles of the empirical distributions of these sums, and verified the location of PARK genes in these distributions. Identical analyses were applied to adenocarcinoma of lung (ADENOCA-LUNG) and squamous cell carcinoma of lung (SQUAMCA-LUNG). We also analyzed the distribution of the number of mutated PARK genes in CM samples vs the 2 lung cancers. Results: Somatic CM mutation analysis (n 5 246) detected 315,914 mutations in 18,758 genes. Somatic CM mutations were found in 14 of 15 PARK genes. Forty-eight percent of CM samples carried $1 PARK mutation and 25% carried multiple PARK mutations. PARK8 mutations occurred above the 95th percentile of the empirical distribution for SMut and SSampl. Significantly more CM samples harbored multiple PARK gene mutations compared with SQUAMCALUNG (p 5 0.0026) and with ADENOCA-LUNG (p , 0.0001). Conclusions: The overrepresentation of somatic PARK mutations in CM suggests shared dysregulated pathways for CM and PD.
Description: Authors include:Rivka Inzelberg, Yardena Samuels, Esther Azizi, Nouar Qutob, Lilah Inzelberg, Eytan Domany, Edna Schechtman, Eitan Friedman,
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