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XL t(14;18) IGH/MALT1 DF

Translocation/Dual Fusion Probe

Order Number
Package Size
100 µl (10 Tests)
Regulatory Status

IVDR Certification

MetaSystems Probes has already certified a large part of its portfolio, according to IVDR.

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For organizational reasons, we currently provide only the IVDD product.

Product Description

XL t(14;18) IGH/MALT1 DF

XL t(14;18) IGH/MALT1 DF consists of a green-labeled probe hybridizing to the IGH gene region at 14q32.3 and an orange-labeled probe hybridizing to the MALT1 gene region at 18q21.3.

Probe maps are created in accordance with the intended purpose of the product. Solid colored bars do not necessarily indicate that the probe fully covers the indicated genomic region. Therefore, caution is advised when interpreting results generated through off-label use. Probe map details based on UCSC Genome Browser GRCh37/hg19. Map components not to scale. Further information is available on request.

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Clinical Details

MALT (mucosa-associated lymphoid tissue) lymphomas occur at diverse anatomic sites and are closely linked to several distinct chronic inflammatory disorders. Up to 50% of the MALT lymphoma cases analyzed demonstrate MALT1 rearrangements. The MALT1 gene was originally identified by its involvement in the MALT lymphoma associated translocation t(11;18)(q21;q21). This rearrangement is detected in 30% of all cases of MALT lymphoma and leads to BIRC3-MALT1 fusions. It is restricted to MALT lymphomas and has not been detected in nodal or splenic marginal zone lymphomas, diffuse large B-cell lymphomas, or other non-Hodgkin lymphomas.
Approximately 20% of MALT lymphoma cases analyzed are characterized by t(14;18)(q32;q21) leading to a IGH-MALT1 fusion. This reciprocal translocation juxtaposes MALT1 to transcriptional enhancers in the IGH locus and results in overexpression of the MALT1 gene. The distinct breakpoints on both chromosomes are precisely defined. The oncogenic potential of MALT1 is linked to its participation in the activation of nuclear factor-kappa B (NF-κB). This important transcription factor mediates the expression of anti-apoptotic, cell survival- and proliferation-promoting genes. Furthermore, there is emerging evidence indicating an oncogenic cross-link between the above-mentioned genetic rearrangements and immunological stimulation occurring during the pathogenesis of MALT lymphoma.

Clinical Applications

  • Non-Hodgkin Lymphomas (NHL)
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XL t(14;18) IGH/MALT1 DF

XL t(14;18) IGH/MALT1 DF hybridized to bone marrow cells, two aberrant cells are shown. A t(14;18) translocation has occurred generating a signal pattern of two colocalization/fusion signals, one green and one orange signal.

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Expected Patterns

Expected Pattern 1

Normal Cell:
Two green (2G) and two orange (2O) signals.

Expected Pattern 2

Aberrant Cell (typical results):
One green (1G), one orange (1O), and two green-orange colocalization/fusion signals (2GO) resulting from a reciprocal translocation between the relevant loci.

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  • Streubel et al (2003) Blood 101:2335-2339
  • Bacon et al (2007) J Clin Pathol 60:361-372
  • Du (2017) Best Pract Res Clin Haematol 30:13-23



IVDR Certification

MetaSystems Probes has received IVDR certification for our initial 26 fluorescence in situ hybridization (FISH) probes from the notified body, BSI. Achieving this milestone was not without its challenges, and we are delighted to have accomplished IVDR certification for this probe set at an early stage.

IVDR Certification

New Probes Catalog is Online!


MetaSystems Probes is pleased to announce the new catalog including new and innovative products and supporting information. A PDF version of the new catalog is available for download here.

New Probes Catalog is Online!