XL MYC BA consists of an orange-labeled probe hybridizing proximal to the MYC gene region at 8q24.21 and a green-labeled probe hybridizing distal to the MYC gene region at 8q24.21.

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.

Translocations involving MYC are observed in diffuse large-B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, and other lymphomas. In Burkitt Lymphoma, the MYC gene, located at 8q24, is activated by a translocation next to an immunoglobulin constant gene. Most frequently, MYC is positioned near the immunoglobulin heavy-chain (IGH) constant region on chromosome 14q32. However, in some tumors MYC can also be positioned near the light-chain region on chromosome 2p11 (IGK) or 22q11 (IGL). In addtion, other translocation partners have been identified (e.g. BCL11A, PAX5, ZCCHC7).

The XL MYC probe is designed as a break apart probe with two probes juxtaposed and differentially labeled. The proximal and distal regions are sufficiently large to achieve intense signals also on paraffin-embedded tissue sections. The wide gap between the orange and green part of this probe allows for the detection of the t(2;8) translocation as well as t(8;14) and t(8;22).

Clinical Applications

• Non-Hodgkin Lymphomas (NHL)
• Solid Tumors (Solid Tumors)

XL MYC BA hybridized to lymphocytes. Separate orange and green signals indicate a split in the MYC gene region.

• Hummel et al (2006) N Engl J Med 354:2419-2430
• Einerson et al (2006) Leukemia 20:1790-1799
• Bertrand et al (2007) Leukemia 21:515-523

• Utility and performance of bacterial artificial chromosomes-on-beads assays in chromosome analysis of clinical prenatal samples, products of conception and blood samples.
• A child with multiple congenital anomalies due to partial trisomy 7q22.1 → qter resulting from a maternally inherited balanced translocation: a case report and review of literature.
• Distinct roles of ATM and ATR in the regulation of ARP8 phosphorylation to prevent chromosome translocations.
• Heterogeneous MYCN amplification in neuroblastoma: a SIOP Europe Neuroblastoma Study.
• Immense random colocalization, revealed by automated high content image cytometry, seriously questions FISH as gold standard for detecting EML4-ALK fusion.
• Fluorescence in situ hybridisation assays designed for del(7q) detection uncover more complex rearrangements in myeloid leukaemia cell lines
• Detection of t(7;12)(q36;p13) in paediatric leukaemia using dual colour fluorescence in situ hybridisation.
• A rare case of t(11;22) in a mantle cell lymphoma like B-cell neoplasiaresulting in a fusion of IGL and CCND1: case report.
• Genomic DNA-chip hybridization in t(11;14)-positive mantle cell lymphomas shows a high frequency of aberrations and allows a refined characterization of consensus regions.