Non-IGH gene was the preferential partner of rearrangement in those diffuse large B-cell lymphoma showing MYC heteroclonality (P=0.016) and/or non-classical FISH breakpoints (P=0.058).
The chromosomal translocation t(8;14)(q24;q32) with juxtaposition of MYC to enhancer elements in the immunoglobulin heavy chain (IGH) gene locus is the genetic hallmark of the majority of Burkitt lymphoma and a subset of Diffuse large B-cell lymphoma patients.
NOTCH1 mutation increased the risk of transformation to diffuse large B-cell lymphoma independently from IGHV, with this being validated in resampling tests of replicability.
FISH screening of a population-based cohort of B-cell lymphomas from a prospective trial for the treatment of lymphoma in childhood (BFM-NHL) identified additionally a follicular lymphoma Grade 3/diffuse large B-cell lymphoma with IGH-CBFA2T3/ACSF3 juxtaposition.
B-cell lymphomas with concurrent IGH-BCL2 and MYC rearrangements are aggressive neoplasms with clinical and pathologic features distinct from Burkitt lymphoma and diffuse large B-cell lymphoma.
The t(14;18)(q32;q21) involving the IGH and the MALT1 gene has previously been described in PCMZL, whereas the t(14;18)(q32;q21)IGH/BCL2 seems to be restricted to follicular lymphoma and diffuse large B-cell lymphoma.