The spectrum of somatic mutations in monoclonal gammopathy of undetermined significance indicates a less complex genomic landscape than that in multiple myeloma

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F65269705%3A_____%2F17%3A00074567" target="_blank" >RIV/65269705:_____/17:00074567 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/17:00095684 RIV/61988987:17110/17:A1801RS4 RIV/00064173:_____/17:N0000031 RIV/00843989:_____/17:E0106498

Result on the web

<a href="https://haematologica.org/article/view/8197" target="_blank" >https://haematologica.org/article/view/8197</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3324/haematol.2017.163766" target="_blank" >10.3324/haematol.2017.163766</a>

Result language

angličtina

Original language name

The spectrum of somatic mutations in monoclonal gammopathy of undetermined significance indicates a less complex genomic landscape than that in multiple myeloma

Original language description

Monoclonal gammopathy of undetermined significance is a premalignant precursor of multiple myeloma with a 1% risk of progression per year. Although targeted analyses have shown the presence of specific genetic abnormalities such as IGH translocations, RB1 deletion, 1q gain, hyperdiploidy or RAS gene mutations, little is known about the molecular mechanism of malignant transformation. We performed whole exome sequencing together with comparative genomic hybridization plus single nucleotide polymorphism array analysis in 33 flow-cytometry-separated abnormal plasma cell samples from patients with monoclonal gammopathy of undetermined significance to describe somatic gene mutations and chromosome changes at the genome-wide level. Non-synonymous mutations and copy-number alterations were present in 97.0% and in 60.6% of cases, respectively. Importantly, the number of somatic mutations was significantly lower in monoclonal gammopathy of undetermined significance than in myeloma (P&lt; 10-4) and we identified six genes that were significantly mutated in myeloma (KRAS, NRAS, DIS3, HIST1H1E, EGR1 and LTB) within the monoclonal gammopathy of undetermined significance dataset. We also found a positive correlation with increasing chromosome changes and somatic gene mutations. IGH translocations, comprising t(4; 14), t(11; 14), t(14; 16) and t(14; 20), were present in 27.3% of cases and in a similar frequency to myeloma, consistent with the primary lesion hypothesis. MYC translocations and TP53 deletions or mutations were not detected in samples from patients with monoclonal gammopathy of undetermined significance, indicating that they may be drivers of progression to myeloma. Data from this study show that monoclonal gammopathy of undetermined significance is genetically similar to myeloma, however overall genetic abnormalities are present at significantly lower levels in monoclonal gammopathy of undetermined significant than in myeloma.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30205 - Hematology

Project

<a href="/en/project/NT13492" target="_blank" >NT13492: Role of genetic abnormalities in development and progression of precancerosis monoclonal gammopathy of undetermined significance</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Haematologica

ISSN

0390-6078

e-ISSN

—

Volume of the periodical

102

Issue of the periodical within the volume

9

Country of publishing house

IT - ITALY

Number of pages

9

Pages from-to

1617-1625

UT code for WoS article

000408743300030

EID of the result in the Scopus database

2-s2.0-85029602067