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XL TCRA/D

Break Apart Probe

Order Number
D-5106-100-OG
Package Size
100 µl (10 Tests)
Labels
  
Chromosome
14
Regulatory Status
IVDD

IVDR Certification

MetaSystems Probes has already certified a large part of its portfolio, according to IVDR. For organizational reasons, we currently provide only the IVDD product.

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Product Description

XL TCRA/D

XL TCRA/D consists of an orange-labeled probe hybridizing proximal to the TCRA/D gene region at 14q11.2 and a green-labeled probe hybridizing distal to TCRA/D gene region at 14q11.2.

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

Chromosomal aberrations with breakpoints in T-cell receptor (TCR) gene loci are recurrent in several T-cell malignancies. The chromosomal alterations juxtapose oncogenes next to TCR regulatory sequences leading to deregulated expression of those oncogenes.

T-cell prolymphocytic leukemia (T-PLL) harbors frequent alterations of the TCRA/D locus, usually caused by an inv(14)(q11q32). By molecular cytogenetic studies, the incidence of TCRA/D rearrangements is about 24% of all T-cell acute lymphoblastic leukemia (T-ALL) cases.

Clinical Applications

  • Acute Lymphoblastic Leukemia (ALL)
  • Non-Hodgkin Lymphomas (NHL)
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Images

XL TCRA/D

XL TCRA/D hybridized to lymphocytes. One normal metaphase is shown.

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Expected Patterns

Expected Pattern 1

Normal Cell:
Two green-orange (2GO) fusion signals representing the two normal TCRA/D loci.

Expected Pattern 2

Aberrant Cell (typical results):
One green (1G), one orange (1O), and one green-orange (1GO) fusion signal, indicating a chromosome break in the TCRA/D locus.

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Literature

  • Gesk et al (2003) Leukemia 17:738-745
  • Leich et al (2007) J Pathol 213:99-105
  • Feldman et al (2009) Am J Clin Pathol 130:178-185

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News

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About 100 guests from 36 countries met on the XVIII. MetaSystems Distributor Meeting (DM) in November to exchange experiences and to get to know new trends and developments at MetaSystems.

MetaSystems DM2019 Largest in History

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Neon, the outstanding MetaSystems case and image management system, offers many tools and helpful gadgets to streamline routine workflows, for example in cytogenetics labs. The second MetaSystems User Day, addressed to MetaSystems clients from Germany, Austria, and Switzerland, provided in different workshops knowledge helping to unleash the full power of the system.

Second MetaSystems User Day in Altlussheim, Germany