Table of Contents

Overview

BCL6 is one of a number of genes affected by aberrant somatic hypermutation in B-cell lymphomas, which complicates the interpretation of mutations at this locus. Although common, particularly in DLBCL, the function of many of these mutations remains unclear but some have been shown to affect the regulation of BCL6 expression. The role of BCL6 missense mutations, seen over 9% of patients remains unclear.

Experimental Evidence

Driver mutations affecting this gene in BL/FL/DLBCL have been experimentally demonstrated to cause a reduction or loss of function (LOF).1

Relevance tier by entity

Entity Tier Description
BL 1 High-confidence BL gene
DLBCL 1 High-confidence DLBCL gene
FL 1 High-confidence FL gene

Mutation incidence in large patient cohorts (GAMBL reanalysis)

DLBCL

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FL

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BL

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Mutation pattern and selective pressure estimates

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aSHM regions

chr_name hg19_start hg19_end region regulatory_comment
chr3 187458526 187464632 TSS NA
chr3 187615533 187625659 Intergenic-1 NA
chr3 187625659 187638101 Intergenic-2 NA
chr3 187657518 187665996 Intergenic-3 NA
chr3 187675741 187690717 Intergenic-4 NA
chr3 187690717 187705000 Intergenic-5 NA

BCL6 Hotspots

Chromosome Coordinate (hg19) ref>alt HGVSp
chr3 187443373 G>A R585W
chr3 187443370 G>A P586S
chr3 187443369 G>A P586L
chr3 187443367 C>T A587T
chr3 187443366 G>T A587D
chr3 187443366 G>C A587G
chr3 187443345 C>T R594Q
chr3 187443342 A>T I595N

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Expression

Representative Mutations

BL

Rating ★ ★ ★ ★ ☆

All Mutations

BL

1090 747

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References

1.
Mascle X, Albagli O, Lemercier C. Point mutations in BCL6 DNA-binding domain reveal distinct roles for the six zinc fingers. Biochem Biophys Res Commun. 2003 Jan 10;300(2):391–396.
2.
Bal E, Kumar R, Hadigol M, Holmes AB, Hilton LK, Loh JW, Dreval K, Wong JCH, Vlasevska S, Corinaldesi C, Soni RK, Basso K, Morin RD, Khiabanian H, Pasqualucci L, Dalla-Favera R. Super-enhancer hypermutation alters oncogene expression in B cell lymphoma. Nature. 2022 Jul;607(7920):808–815. PMCID: PMC9583699
3.
Love C, Sun Z, Jima D, Li G, Zhang J, Miles R, Richards KL, Dunphy CH, Choi WWL, Srivastava G, Lugar PL, Rizzieri DA, Lagoo AS, Bernal-Mizrachi L, Mann KP, Flowers CR, Naresh KN, Evens AM, Chadburn A, Gordon LI, Czader MB, Gill JI, Hsi ED, Greenough A, Moffitt AB, McKinney M, Banerjee A, Grubor V, Levy S, Dunson DB, Dave SS. The genetic landscape of mutations in Burkitt lymphoma. Nat Genet. 2012 Dec;44(12):1321–1325. PMCID: PMC3674561
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Morin RD, Mungall K, Pleasance E, Mungall AJ, Goya R, Huff RD, Scott DW, Ding J, Roth A, Chiu R, Corbett RD, Chan FC, Mendez-Lago M, Trinh DL, Bolger-Munro M, Taylor G, Hadj Khodabakhshi A, Ben-Neriah S, Pon J, Meissner B, Woolcock B, Farnoud N, Rogic S, Lim EL, Johnson NA, Shah S, Jones S, Steidl C, Holt R, Birol I, Moore R, Connors JM, Gascoyne RD, Marra MA. Mutational and structural analysis of diffuse large B-cell lymphoma using whole-genome sequencing. Blood. 2013 Aug 15;122(7):1256–1265. PMCID: PMC3744992
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Reddy A, Zhang J, Davis NS, Moffitt AB, Love CL, Waldrop A, Leppa S, Pasanen A, Meriranta L, Karjalainen-Lindsberg ML, Nørgaard P, Pedersen M, Gang AO, Høgdall E, Heavican TB, Lone W, Iqbal J, Qin Q, Li G, Kim SY, Healy J, Richards KL, Fedoriw Y, Bernal-Mizrachi L, Koff JL, Staton AD, Flowers CR, Paltiel O, Goldschmidt N, Calaminici M, Clear A, Gribben J, Nguyen E, Czader MB, Ondrejka SL, Collie A, Hsi ED, Tse E, Au-Yeung RKH, Kwong YL, Srivastava G, Choi WWL, Evens AM, Pilichowska M, Sengar M, Reddy N, Li S, Chadburn A, Gordon LI, Jaffe ES, Levy S, Rempel R, Tzeng T, Happ LE, Dave T, Rajagopalan D, Datta J, Dunson DB, Dave SS. Genetic and Functional Drivers of Diffuse Large B Cell Lymphoma. Cell. 2017 Oct;171(2):481–494.e15. PMCID: PMC5659841
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Schmitz R, Wright GW, Huang DW, Johnson CA, Phelan JD, Wang JQ, Roulland S, Kasbekar M, Young RM, Shaffer AL, Hodson DJ, Xiao W, Yu X, Yang Y, Zhao H, Xu W, Liu X, Zhou B, Du W, Chan WC, Jaffe ES, Gascoyne RD, Connors JM, Campo E, Lopez-Guillermo A, Rosenwald A, Ott G, Delabie J, Rimsza LM, Tay Kuang Wei K, Zelenetz AD, Leonard JP, Bartlett NL, Tran B, Shetty J, Zhao Y, Soppet DR, Pittaluga S, Wilson WH, Staudt LM. Genetics and Pathogenesis of Diffuse Large B-Cell Lymphoma. N Engl J Med. 2018 Apr 12;378(15):1396–1407. PMCID: PMC6010183

Citing

If you use the information or data from this site, please cite

Krysta Coyle, Kostiantyn Dreval, Daniel Hodson and Ryan D. Morin. Audit of B-cell cancer genes. Blood Adv (2025) 9 (8): 2019–2031.

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