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Identification of cancer sex-disparity in the functional integrity of p53 and its X chromosome network.


ABSTRACT: The disproportionately high prevalence of male cancer is poorly understood. We tested for sex-disparity in the functional integrity of the major tumor suppressor p53 in sporadic cancers. Our bioinformatics analyses expose three novel levels of p53 impact on sex-disparity in 12 non-reproductive cancer types. First, TP53 mutation is more frequent in these cancers among US males than females, with poorest survival correlating with its mutation. Second, numerous X-linked genes are associated with p53, including vital genomic regulators. Males are at unique risk from alterations of their single copies of these genes. High expression of X-linked negative regulators of p53 in wild-type TP53 cancers corresponds with reduced survival. Third, females exhibit an exceptional incidence of non-expressed mutations among p53-associated X-linked genes. Our data indicate that poor survival in males is contributed by high frequencies of TP53 mutations and an inability to shield against deregulated X-linked genes that engage in p53 networks.

SUBMITTER: Haupt S 

PROVIDER: S-EPMC6879765 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Identification of cancer sex-disparity in the functional integrity of p53 and its X chromosome network.

Haupt Sue S   Caramia Franco F   Herschtal Alan A   Soussi Thierry T   Lozano Guillermina G   Chen Hu H   Liang Han H   Speed Terence P TP   Haupt Ygal Y  

Nature communications 20191126 1


The disproportionately high prevalence of male cancer is poorly understood. We tested for sex-disparity in the functional integrity of the major tumor suppressor p53 in sporadic cancers. Our bioinformatics analyses expose three novel levels of p53 impact on sex-disparity in 12 non-reproductive cancer types. First, TP53 mutation is more frequent in these cancers among US males than females, with poorest survival correlating with its mutation. Second, numerous X-linked genes are associated with p5  ...[more]

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