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Published in: Clinical and Translational Oncology 8/2018

01-08-2018 | Research Article

Deep sequencing reveals the molecular pathology characteristics between primary uterine leiomyoma and pulmonary benign metastasizing leiomyoma

Authors: J. Jiang, M. He, X. Hu, C. Ni, L. Yang

Published in: Clinical and Translational Oncology | Issue 8/2018

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Abstract

Purpose

Pulmonary benign metastasizing leiomyoma (PBML), a rare condition of smooth muscle tumor, originates from women with a history of uterine leiomyoma (LM). Numerous genetic studies of uterine LM have been reported; however, there are few cytogenetic and molecular descriptions of PBML. Therefore, molecular subtyping is necessary to understand the pathogenesis of metastasizing sites.

Methods

Driver gene exon-capture sequencing was performed on one patient’s peripheral blood, paraffin samples from primary uterine LM, and lung metastasizing leiomyoma 8 years later.

Results

The results showed that the same missense mutations of BLMH, LRP2, MED12, SMAD2, and UGT1A8 were concurrently mutated in the primary uterine LM and the PBML. Moreover, a splice mutation of PTEN (c.492+1G>A) was uniquely identified in the lung metastasis of the patient.

Conclusion

This study indicates that the metastatic lung lesions were derived from the same malignant cell clone of uterine LMs and later acquired the novel driver mutations in the evolution of the tumor. In addition, driver gene sequencing can discriminate somatic driver mutations as biological indicators of potential malignant leiomyoma and can identify pathogenic variation driver mutations, which could be used for individualized therapy.
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Metadata
Title
Deep sequencing reveals the molecular pathology characteristics between primary uterine leiomyoma and pulmonary benign metastasizing leiomyoma
Authors
J. Jiang
M. He
X. Hu
C. Ni
L. Yang
Publication date
01-08-2018
Publisher
Springer International Publishing
Published in
Clinical and Translational Oncology / Issue 8/2018
Print ISSN: 1699-048X
Electronic ISSN: 1699-3055
DOI
https://doi.org/10.1007/s12094-018-1847-y

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