Identification of a novel somatic mutation of POU6F2 by whole-genome sequencing in prolactinoma.

Abstract:

BACKGROUND:Pituitary adenomas (PAs) are one of the most common intracranial tumors; approximately half of PAs are prolactin (PRL)-secreting PAs (prolactinomas). The genetic alterations prevalent in prolactinomas are unknown. METHODS:Here, we present a patient with an extremely aggressive and giant prolactinoma accompanied by serious destruction of the surrounding bone mass. This patient exhibited resistance to dopaminergic drugs. Through whole-genome sequencing, we identified two novel somatic mutations in the POU6F2 gene (NM_001166018.2: c. 839 C>T; NM_001166018.2: c. 875A>G). RESULTS:This report is the first to identify these somatic mutations in the POU6F2 gene in a prolactinoma. We found that these two mutations obviously decreased the expression level of POU6F2. Inhibition of POU6F2 activity increased the cell proliferation and PRL secretion in rat pituitary cells, but proliferation and PRL secretion were decreased in cells with POU6F2 overexpression. CONCLUSIONS:POU6F2 might play a crucial role in the development of prolactinomas and may be a promising target for developing new therapies against prolactinomas.

journal_name

Mol Genet Genomic Med

authors

Miao Y,Li C,Guo J,Wang H,Gong L,Xie W,Zhang Y

doi

10.1002/mgg3.1022

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

e1022

issue

12

issn

2324-9269

journal_volume

7

pub_type

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