J 2016

Different spectra of recurrent gene mutations in subsets of chronic lymphocytic leukemia harboring stereotyped B-cell receptors

SUTTON, Lesley-Ann; Emma YOUNG; Panagiotis BALIAKAS; Anastasia HADZIDIMITRIOU; Theodoros MOYSIADIS et al.

Základní údaje

Originální název

Different spectra of recurrent gene mutations in subsets of chronic lymphocytic leukemia harboring stereotyped B-cell receptors

Autoři

SUTTON, Lesley-Ann; Emma YOUNG; Panagiotis BALIAKAS; Anastasia HADZIDIMITRIOU; Theodoros MOYSIADIS; Karla PLEVOVÁ; Davide ROSSI; Jana KMÍNKOVÁ; Evangelia STALIKA; Lone Bredo PEDERSEN; Jitka MALČÍKOVÁ ORCID; Andreas AGATHANGELIDIS; Zadie DAVIS; Larry MANSOURI; Lydia SCARFO; Myriam BOUDJOGHRA; Alba NAVARRO; Alice F. MUGGEN; Xiao-Jie YAN; Florence NGUYEN-KHAC; Marta LARRAYOZ; Panagiotis PANAGIOTIDIS; Nicholas CHIORAZZI; Carsten Utoft NIEMANN; Chrysoula BELESSI; Elias CAMPO; Jonathan C. STREFFORD; Anton W. LANGERAK; David OSCIER; Gianluca GAIDANO; Šárka POSPÍŠILOVÁ; Frederic DAVI; Paolo GHIA; Kostas STAMATOPOULOS a Richard ROSENQUIST

Vydání

Haematologica, PAVIA, FERRATA STORTI FOUNDATION, 2016, 0390-6078

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30200 3.2 Clinical medicine

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 7.702

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00090992

Organizační jednotka

Středoevropský technologický institut

EID Scopus

Klíčová slova anglicky

ANTIGEN RECEPTORS; GENOMIC ABERRATIONS; EXPRESSION PROFILES; SF3B1; SELECTION; TP53; CLL; SUBGROUPS; INDICATE; PATTERNS

Štítky

Změněno: 6. 12. 2016 13:27, Mgr. Eva Špillingová

Anotace

V originále

We report on markedly different frequencies of genetic lesions within subsets of chronic lymphocytic leukemia patients carrying mutated or unmutated stereotyped B-cell receptor immunoglobulins in the largest cohort (n=565) studied for this purpose. By combining data on recurrent gene mutations (BIRC3, MYD88, NOTCH1, SF3B1 and TP53) and cytogenetic aberrations, we reveal a subset-biased acquisition of gene mutations. More specifically, the frequency of NOTCH1 mutations was found to be enriched in subsets expressing unmutated immunoglobulin genes, i.e. #1, #6, #8 and #59 (22-34%), often in association with trisomy 12, and was significantly different (P<0.001) to the frequency observed in subset #2 (4%, aggressive disease, variable somatic hypermutation status) and subset #4 (1%, indolent disease, mutated immunoglobulin genes). Interestingly, subsets harboring a high frequency of NOTCH1 mutations were found to carry few (if any) SF3B1 mutations. This starkly contrasts with subsets #2 and #3 where, despite their immunogenetic differences, SF3B1 mutations occurred in 45% and 46% of cases, respectively. In addition, mutations within TP53, whilst enriched in subset #1 (16%), were rare in subsets# 2 and #8 (both 2%), despite all being clinically aggressive. All subsets were negative for MYD88 mutations, whereas BIRC3 mutations were infrequent. Collectively, this striking bias and skewed distribution of mutations and cytogenetic aberrations within specific chronic lymphocytic leukemia subsets implies that the mechanisms underlying clinical aggressiveness are not uniform, but rather support the existence of distinct genetic pathways of clonal evolution governed by a particular stereotyped B-cell receptor selecting a certain molecular lesion(s).

Návaznosti

ED1.1.00/02.0068, projekt VaV
Název: CEITEC - central european institute of technology